diff --git a/kernel/kernel/files/configs/kernel-i686-config b/kernel/kernel/files/configs/kernel-i686-config
old mode 100644
new mode 100755
diff --git a/kernel/kernel/files/configs/kernel-x86_64-config b/kernel/kernel/files/configs/kernel-x86_64-config
old mode 100644
new mode 100755
index 4b4b19ec..e4359c8b
--- a/kernel/kernel/files/configs/kernel-x86_64-config
+++ b/kernel/kernel/files/configs/kernel-x86_64-config
@@ -1,7325 +1,9968 @@
-#
-# Automatically generated file; DO NOT EDIT.
-# Linux/x86_64 4.19.56 Kernel Configuration
-#
-
-#
-# Compiler: gcc (Pisi Linux) 7.3.0
-#
-CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=70300
-CONFIG_CLANG_VERSION=0
-CONFIG_CC_HAS_ASM_GOTO=y
-CONFIG_IRQ_WORK=y
-CONFIG_BUILDTIME_EXTABLE_SORT=y
-CONFIG_THREAD_INFO_IN_TASK=y
-
-#
-# General setup
-#
-CONFIG_INIT_ENV_ARG_LIMIT=32
-# CONFIG_COMPILE_TEST is not set
-CONFIG_LOCALVERSION=""
-# CONFIG_LOCALVERSION_AUTO is not set
-CONFIG_BUILD_SALT=""
-CONFIG_HAVE_KERNEL_GZIP=y
-CONFIG_HAVE_KERNEL_BZIP2=y
-CONFIG_HAVE_KERNEL_LZMA=y
-CONFIG_HAVE_KERNEL_XZ=y
-CONFIG_HAVE_KERNEL_LZO=y
-CONFIG_HAVE_KERNEL_LZ4=y
-CONFIG_KERNEL_GZIP=y
-# CONFIG_KERNEL_BZIP2 is not set
-# CONFIG_KERNEL_LZMA is not set
-# CONFIG_KERNEL_XZ is not set
-# CONFIG_KERNEL_LZO is not set
-# CONFIG_KERNEL_LZ4 is not set
-CONFIG_DEFAULT_HOSTNAME=""
-CONFIG_SWAP=y
-CONFIG_SYSVIPC=y
-CONFIG_SYSVIPC_SYSCTL=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_POSIX_MQUEUE_SYSCTL=y
-CONFIG_CROSS_MEMORY_ATTACH=y
-# CONFIG_USELIB is not set
-CONFIG_AUDIT=y
-CONFIG_HAVE_ARCH_AUDITSYSCALL=y
-CONFIG_AUDITSYSCALL=y
-CONFIG_AUDIT_WATCH=y
-CONFIG_AUDIT_TREE=y
-
-#
-# IRQ subsystem
-#
-CONFIG_GENERIC_IRQ_PROBE=y
-CONFIG_GENERIC_IRQ_SHOW=y
-CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
-CONFIG_GENERIC_PENDING_IRQ=y
-CONFIG_GENERIC_IRQ_MIGRATION=y
-CONFIG_GENERIC_IRQ_CHIP=y
-CONFIG_IRQ_DOMAIN=y
-CONFIG_IRQ_SIM=y
-CONFIG_IRQ_DOMAIN_HIERARCHY=y
-CONFIG_GENERIC_MSI_IRQ=y
-CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
-CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
-CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
-CONFIG_IRQ_FORCED_THREADING=y
-CONFIG_SPARSE_IRQ=y
-# CONFIG_GENERIC_IRQ_DEBUGFS is not set
-CONFIG_CLOCKSOURCE_WATCHDOG=y
-CONFIG_ARCH_CLOCKSOURCE_DATA=y
-CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
-CONFIG_GENERIC_TIME_VSYSCALL=y
-CONFIG_GENERIC_CLOCKEVENTS=y
-CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
-CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
-CONFIG_GENERIC_CMOS_UPDATE=y
-
-#
-# Timers subsystem
-#
-CONFIG_TICK_ONESHOT=y
-CONFIG_NO_HZ_COMMON=y
-# CONFIG_HZ_PERIODIC is not set
-CONFIG_NO_HZ_IDLE=y
-# CONFIG_NO_HZ_FULL is not set
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-# CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
-# CONFIG_PREEMPT is not set
-
-#
-# CPU/Task time and stats accounting
-#
-CONFIG_TICK_CPU_ACCOUNTING=y
-# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
-# CONFIG_IRQ_TIME_ACCOUNTING is not set
-CONFIG_HAVE_SCHED_AVG_IRQ=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_BSD_PROCESS_ACCT_V3=y
-CONFIG_TASKSTATS=y
-CONFIG_TASK_DELAY_ACCT=y
-CONFIG_TASK_XACCT=y
-CONFIG_TASK_IO_ACCOUNTING=y
-CONFIG_CPU_ISOLATION=y
-
-#
-# RCU Subsystem
-#
-CONFIG_TREE_RCU=y
-# CONFIG_RCU_EXPERT is not set
-CONFIG_SRCU=y
-CONFIG_TREE_SRCU=y
-CONFIG_RCU_STALL_COMMON=y
-CONFIG_RCU_NEED_SEGCBLIST=y
-CONFIG_BUILD_BIN2C=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_LOG_BUF_SHIFT=18
-CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
-CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
-CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
-CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
-CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
-CONFIG_ARCH_SUPPORTS_INT128=y
-# CONFIG_NUMA_BALANCING is not set
-CONFIG_CGROUPS=y
-CONFIG_PAGE_COUNTER=y
-CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
-CONFIG_MEMCG_SWAP_ENABLED=y
-CONFIG_MEMCG_KMEM=y
-CONFIG_BLK_CGROUP=y
-# CONFIG_DEBUG_BLK_CGROUP is not set
-CONFIG_CGROUP_WRITEBACK=y
-CONFIG_CGROUP_SCHED=y
-CONFIG_FAIR_GROUP_SCHED=y
-CONFIG_CFS_BANDWIDTH=y
-CONFIG_RT_GROUP_SCHED=y
-CONFIG_CGROUP_PIDS=y
-# CONFIG_CGROUP_RDMA is not set
-CONFIG_CGROUP_FREEZER=y
-CONFIG_CGROUP_HUGETLB=y
-CONFIG_CPUSETS=y
-CONFIG_PROC_PID_CPUSET=y
-CONFIG_CGROUP_DEVICE=y
-CONFIG_CGROUP_CPUACCT=y
-CONFIG_CGROUP_PERF=y
-# CONFIG_CGROUP_BPF is not set
-CONFIG_SOCK_CGROUP_DATA=y
-CONFIG_NAMESPACES=y
-CONFIG_UTS_NS=y
-CONFIG_IPC_NS=y
-CONFIG_USER_NS=y
-CONFIG_PID_NS=y
-CONFIG_NET_NS=y
-# CONFIG_CHECKPOINT_RESTORE is not set
-CONFIG_SCHED_AUTOGROUP=y
-# CONFIG_SYSFS_DEPRECATED is not set
-CONFIG_RELAY=y
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE=""
-CONFIG_RD_GZIP=y
-CONFIG_RD_BZIP2=y
-CONFIG_RD_LZMA=y
-CONFIG_RD_XZ=y
-CONFIG_RD_LZO=y
-CONFIG_RD_LZ4=y
-CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_SYSCTL=y
-CONFIG_ANON_INODES=y
-CONFIG_HAVE_UID16=y
-CONFIG_SYSCTL_EXCEPTION_TRACE=y
-CONFIG_HAVE_PCSPKR_PLATFORM=y
-CONFIG_BPF=y
-# CONFIG_EXPERT is not set
-CONFIG_UID16=y
-CONFIG_MULTIUSER=y
-CONFIG_SGETMASK_SYSCALL=y
-CONFIG_SYSFS_SYSCALL=y
-CONFIG_FHANDLE=y
-CONFIG_POSIX_TIMERS=y
-CONFIG_PRINTK=y
-CONFIG_PRINTK_NMI=y
-CONFIG_BUG=y
-CONFIG_ELF_CORE=y
-CONFIG_PCSPKR_PLATFORM=y
-CONFIG_BASE_FULL=y
-CONFIG_FUTEX=y
-CONFIG_FUTEX_PI=y
-CONFIG_EPOLL=y
-CONFIG_SIGNALFD=y
-CONFIG_TIMERFD=y
-CONFIG_EVENTFD=y
-CONFIG_SHMEM=y
-CONFIG_AIO=y
-CONFIG_ADVISE_SYSCALLS=y
-CONFIG_MEMBARRIER=y
-CONFIG_KALLSYMS=y
-CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
-CONFIG_KALLSYMS_BASE_RELATIVE=y
-CONFIG_BPF_SYSCALL=y
-# CONFIG_BPF_JIT_ALWAYS_ON is not set
-# CONFIG_USERFAULTFD is not set
-CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
-CONFIG_RSEQ=y
-# CONFIG_EMBEDDED is not set
-CONFIG_HAVE_PERF_EVENTS=y
-
-#
-# Kernel Performance Events And Counters
-#
-CONFIG_PERF_EVENTS=y
-CONFIG_VM_EVENT_COUNTERS=y
-# CONFIG_COMPAT_BRK is not set
-CONFIG_SLAB=y
-# CONFIG_SLUB is not set
-CONFIG_SLAB_MERGE_DEFAULT=y
-# CONFIG_SLAB_FREELIST_RANDOM is not set
-CONFIG_SYSTEM_DATA_VERIFICATION=y
-CONFIG_PROFILING=y
-CONFIG_TRACEPOINTS=y
-CONFIG_64BIT=y
-CONFIG_X86_64=y
-CONFIG_X86=y
-CONFIG_INSTRUCTION_DECODER=y
-CONFIG_OUTPUT_FORMAT="elf64-x86-64"
-CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
-CONFIG_LOCKDEP_SUPPORT=y
-CONFIG_STACKTRACE_SUPPORT=y
-CONFIG_MMU=y
-CONFIG_ARCH_MMAP_RND_BITS_MIN=28
-CONFIG_ARCH_MMAP_RND_BITS_MAX=32
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
-CONFIG_GENERIC_ISA_DMA=y
-CONFIG_GENERIC_BUG=y
-CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
-CONFIG_GENERIC_HWEIGHT=y
-CONFIG_ARCH_MAY_HAVE_PC_FDC=y
-CONFIG_RWSEM_XCHGADD_ALGORITHM=y
-CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_ARCH_HAS_CPU_RELAX=y
-CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
-CONFIG_ARCH_HAS_FILTER_PGPROT=y
-CONFIG_HAVE_SETUP_PER_CPU_AREA=y
-CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
-CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
-CONFIG_ARCH_HIBERNATION_POSSIBLE=y
-CONFIG_ARCH_SUSPEND_POSSIBLE=y
-CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
-CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
-CONFIG_ZONE_DMA32=y
-CONFIG_AUDIT_ARCH=y
-CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
-CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
-CONFIG_HAVE_INTEL_TXT=y
-CONFIG_X86_64_SMP=y
-CONFIG_ARCH_SUPPORTS_UPROBES=y
-CONFIG_FIX_EARLYCON_MEM=y
-CONFIG_PGTABLE_LEVELS=4
-CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
-
-#
-# Processor type and features
-#
-CONFIG_ZONE_DMA=y
-CONFIG_SMP=y
-CONFIG_X86_FEATURE_NAMES=y
-CONFIG_X86_X2APIC=y
-CONFIG_X86_MPPARSE=y
-# CONFIG_GOLDFISH is not set
-CONFIG_RETPOLINE=y
-# CONFIG_INTEL_RDT is not set
-CONFIG_X86_EXTENDED_PLATFORM=y
-# CONFIG_X86_NUMACHIP is not set
-# CONFIG_X86_VSMP is not set
-# CONFIG_X86_UV is not set
-# CONFIG_X86_GOLDFISH is not set
-# CONFIG_X86_INTEL_MID is not set
-# CONFIG_X86_INTEL_LPSS is not set
-CONFIG_X86_AMD_PLATFORM_DEVICE=y
-CONFIG_IOSF_MBI=m
-# CONFIG_IOSF_MBI_DEBUG is not set
-CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
-CONFIG_SCHED_OMIT_FRAME_POINTER=y
-CONFIG_HYPERVISOR_GUEST=y
-CONFIG_PARAVIRT=y
-# CONFIG_PARAVIRT_SPINLOCKS is not set
-CONFIG_XEN=y
-CONFIG_XEN_PV=y
-CONFIG_XEN_PV_SMP=y
-CONFIG_XEN_DOM0=y
-CONFIG_XEN_PVHVM=y
-CONFIG_XEN_PVHVM_SMP=y
-CONFIG_XEN_512GB=y
-CONFIG_XEN_SAVE_RESTORE=y
-CONFIG_XEN_DEBUG_FS=y
-CONFIG_XEN_PVH=y
-CONFIG_KVM_GUEST=y
-# CONFIG_KVM_DEBUG_FS is not set
-CONFIG_PARAVIRT_TIME_ACCOUNTING=y
-CONFIG_PARAVIRT_CLOCK=y
-# CONFIG_JAILHOUSE_GUEST is not set
-CONFIG_NO_BOOTMEM=y
-# CONFIG_MK8 is not set
-# CONFIG_MPSC is not set
-# CONFIG_MCORE2 is not set
-# CONFIG_MATOM is not set
-CONFIG_GENERIC_CPU=y
-CONFIG_X86_INTERNODE_CACHE_SHIFT=6
-CONFIG_X86_L1_CACHE_SHIFT=6
-CONFIG_X86_TSC=y
-CONFIG_X86_CMPXCHG64=y
-CONFIG_X86_CMOV=y
-CONFIG_X86_MINIMUM_CPU_FAMILY=64
-CONFIG_X86_DEBUGCTLMSR=y
-CONFIG_CPU_SUP_INTEL=y
-CONFIG_CPU_SUP_AMD=y
-CONFIG_CPU_SUP_CENTAUR=y
-CONFIG_HPET_TIMER=y
-CONFIG_HPET_EMULATE_RTC=y
-CONFIG_DMI=y
-CONFIG_GART_IOMMU=y
-# CONFIG_CALGARY_IOMMU is not set
-CONFIG_NR_CPUS_RANGE_BEGIN=2
-CONFIG_NR_CPUS_RANGE_END=512
-CONFIG_NR_CPUS_DEFAULT=64
-CONFIG_NR_CPUS=8
-CONFIG_SCHED_SMT=y
-CONFIG_SCHED_MC=y
-CONFIG_SCHED_MC_PRIO=y
-CONFIG_X86_LOCAL_APIC=y
-CONFIG_X86_IO_APIC=y
-CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
-CONFIG_X86_MCE=y
-# CONFIG_X86_MCELOG_LEGACY is not set
-CONFIG_X86_MCE_INTEL=y
-CONFIG_X86_MCE_AMD=y
-CONFIG_X86_MCE_THRESHOLD=y
-# CONFIG_X86_MCE_INJECT is not set
-CONFIG_X86_THERMAL_VECTOR=y
-
-#
-# Performance monitoring
-#
-CONFIG_PERF_EVENTS_INTEL_UNCORE=y
-CONFIG_PERF_EVENTS_INTEL_RAPL=y
-CONFIG_PERF_EVENTS_INTEL_CSTATE=y
-# CONFIG_PERF_EVENTS_AMD_POWER is not set
-CONFIG_X86_16BIT=y
-CONFIG_X86_ESPFIX64=y
-CONFIG_X86_VSYSCALL_EMULATION=y
-CONFIG_I8K=m
-CONFIG_MICROCODE=y
-CONFIG_MICROCODE_INTEL=y
-CONFIG_MICROCODE_AMD=y
-CONFIG_MICROCODE_OLD_INTERFACE=y
-CONFIG_X86_MSR=y
-CONFIG_X86_CPUID=y
-# CONFIG_X86_5LEVEL is not set
-CONFIG_X86_DIRECT_GBPAGES=y
-CONFIG_ARCH_HAS_MEM_ENCRYPT=y
-# CONFIG_AMD_MEM_ENCRYPT is not set
-CONFIG_NUMA=y
-CONFIG_AMD_NUMA=y
-CONFIG_X86_64_ACPI_NUMA=y
-CONFIG_NODES_SPAN_OTHER_NODES=y
-# CONFIG_NUMA_EMU is not set
-CONFIG_NODES_SHIFT=10
-CONFIG_ARCH_SPARSEMEM_ENABLE=y
-CONFIG_ARCH_SPARSEMEM_DEFAULT=y
-CONFIG_ARCH_SELECT_MEMORY_MODEL=y
-CONFIG_ARCH_MEMORY_PROBE=y
-CONFIG_ARCH_PROC_KCORE_TEXT=y
-CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
-# CONFIG_X86_PMEM_LEGACY is not set
-CONFIG_X86_CHECK_BIOS_CORRUPTION=y
-CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
-CONFIG_X86_RESERVE_LOW=64
-CONFIG_MTRR=y
-CONFIG_MTRR_SANITIZER=y
-CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
-CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
-CONFIG_X86_PAT=y
-CONFIG_ARCH_USES_PG_UNCACHED=y
-CONFIG_ARCH_RANDOM=y
-CONFIG_X86_SMAP=y
-CONFIG_X86_INTEL_UMIP=y
-# CONFIG_X86_INTEL_MPX is not set
-CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
-CONFIG_EFI=y
-CONFIG_EFI_STUB=y
-# CONFIG_EFI_MIXED is not set
-CONFIG_SECCOMP=y
-# CONFIG_HZ_100 is not set
-# CONFIG_HZ_250 is not set
-# CONFIG_HZ_300 is not set
-CONFIG_HZ_1000=y
-CONFIG_HZ=1000
-CONFIG_SCHED_HRTICK=y
-CONFIG_KEXEC=y
-# CONFIG_KEXEC_FILE is not set
-CONFIG_CRASH_DUMP=y
-CONFIG_KEXEC_JUMP=y
-CONFIG_PHYSICAL_START=0x200000
-CONFIG_RELOCATABLE=y
-CONFIG_RANDOMIZE_BASE=y
-CONFIG_X86_NEED_RELOCS=y
-CONFIG_PHYSICAL_ALIGN=0x1000000
-CONFIG_DYNAMIC_MEMORY_LAYOUT=y
-CONFIG_RANDOMIZE_MEMORY=y
-CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0xa
-CONFIG_HOTPLUG_CPU=y
-# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
-# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
-# CONFIG_COMPAT_VDSO is not set
-CONFIG_LEGACY_VSYSCALL_EMULATE=y
-# CONFIG_LEGACY_VSYSCALL_NONE is not set
-# CONFIG_CMDLINE_BOOL is not set
-CONFIG_MODIFY_LDT_SYSCALL=y
-CONFIG_HAVE_LIVEPATCH=y
-CONFIG_ARCH_HAS_ADD_PAGES=y
-CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
-CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
-CONFIG_USE_PERCPU_NUMA_NODE_ID=y
-CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
-CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
-CONFIG_ARCH_ENABLE_THP_MIGRATION=y
-
-#
-# Power management and ACPI options
-#
-CONFIG_ARCH_HIBERNATION_HEADER=y
-CONFIG_SUSPEND=y
-CONFIG_SUSPEND_FREEZER=y
-CONFIG_HIBERNATE_CALLBACKS=y
-CONFIG_HIBERNATION=y
-CONFIG_PM_STD_PARTITION=""
-CONFIG_PM_SLEEP=y
-CONFIG_PM_SLEEP_SMP=y
-# CONFIG_PM_AUTOSLEEP is not set
-# CONFIG_PM_WAKELOCKS is not set
-CONFIG_PM=y
-CONFIG_PM_DEBUG=y
-# CONFIG_PM_ADVANCED_DEBUG is not set
-CONFIG_PM_TEST_SUSPEND=y
-CONFIG_PM_SLEEP_DEBUG=y
-CONFIG_PM_TRACE=y
-CONFIG_PM_TRACE_RTC=y
-CONFIG_PM_CLK=y
-# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
-CONFIG_ARCH_SUPPORTS_ACPI=y
-CONFIG_ACPI=y
-CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
-CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
-CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
-# CONFIG_ACPI_DEBUGGER is not set
-CONFIG_ACPI_SPCR_TABLE=y
-CONFIG_ACPI_LPIT=y
-CONFIG_ACPI_SLEEP=y
-# CONFIG_ACPI_PROCFS_POWER is not set
-CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
-CONFIG_ACPI_EC_DEBUGFS=m
-CONFIG_ACPI_AC=y
-CONFIG_ACPI_BATTERY=y
-CONFIG_ACPI_BUTTON=y
-CONFIG_ACPI_VIDEO=m
-CONFIG_ACPI_FAN=y
-# CONFIG_ACPI_TAD is not set
-CONFIG_ACPI_DOCK=y
-CONFIG_ACPI_CPU_FREQ_PSS=y
-CONFIG_ACPI_PROCESSOR_CSTATE=y
-CONFIG_ACPI_PROCESSOR_IDLE=y
-CONFIG_ACPI_CPPC_LIB=y
-CONFIG_ACPI_PROCESSOR=y
-CONFIG_ACPI_IPMI=m
-CONFIG_ACPI_HOTPLUG_CPU=y
-CONFIG_ACPI_PROCESSOR_AGGREGATOR=m
-CONFIG_ACPI_THERMAL=y
-CONFIG_ACPI_NUMA=y
-CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
-CONFIG_ACPI_TABLE_UPGRADE=y
-# CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_PCI_SLOT=y
-CONFIG_ACPI_CONTAINER=y
-CONFIG_ACPI_HOTPLUG_MEMORY=y
-CONFIG_ACPI_HOTPLUG_IOAPIC=y
-CONFIG_ACPI_SBS=m
-CONFIG_ACPI_HED=y
-CONFIG_ACPI_CUSTOM_METHOD=m
-CONFIG_ACPI_BGRT=y
-# CONFIG_ACPI_NFIT is not set
-CONFIG_HAVE_ACPI_APEI=y
-CONFIG_HAVE_ACPI_APEI_NMI=y
-CONFIG_ACPI_APEI=y
-CONFIG_ACPI_APEI_GHES=y
-CONFIG_ACPI_APEI_PCIEAER=y
-CONFIG_ACPI_APEI_MEMORY_FAILURE=y
-# CONFIG_ACPI_APEI_EINJ is not set
-# CONFIG_ACPI_APEI_ERST_DEBUG is not set
-CONFIG_DPTF_POWER=m
-CONFIG_ACPI_WATCHDOG=y
-CONFIG_ACPI_EXTLOG=m
-# CONFIG_PMIC_OPREGION is not set
-CONFIG_ACPI_CONFIGFS=m
-CONFIG_X86_PM_TIMER=y
-CONFIG_SFI=y
-
-#
-# CPU Frequency scaling
-#
-CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_GOV_ATTR_SET=y
-CONFIG_CPU_FREQ_GOV_COMMON=y
-CONFIG_CPU_FREQ_STAT=y
-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-CONFIG_CPU_FREQ_GOV_POWERSAVE=m
-CONFIG_CPU_FREQ_GOV_USERSPACE=y
-CONFIG_CPU_FREQ_GOV_ONDEMAND=m
-CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
-# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set
-
-#
-# CPU frequency scaling drivers
-#
-CONFIG_X86_INTEL_PSTATE=y
-CONFIG_X86_PCC_CPUFREQ=y
-CONFIG_X86_ACPI_CPUFREQ=y
-CONFIG_X86_ACPI_CPUFREQ_CPB=y
-CONFIG_X86_POWERNOW_K8=y
-CONFIG_X86_AMD_FREQ_SENSITIVITY=m
-# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
-CONFIG_X86_P4_CLOCKMOD=y
-
-#
-# shared options
-#
-CONFIG_X86_SPEEDSTEP_LIB=y
-
-#
-# CPU Idle
-#
-CONFIG_CPU_IDLE=y
-CONFIG_CPU_IDLE_GOV_LADDER=y
-CONFIG_CPU_IDLE_GOV_MENU=y
-CONFIG_INTEL_IDLE=y
-
-#
-# Bus options (PCI etc.)
-#
-CONFIG_PCI=y
-CONFIG_PCI_DIRECT=y
-CONFIG_PCI_MMCONFIG=y
-CONFIG_PCI_XEN=y
-CONFIG_PCI_DOMAINS=y
-CONFIG_MMCONF_FAM10H=y
-CONFIG_PCIEPORTBUS=y
-CONFIG_HOTPLUG_PCI_PCIE=y
-CONFIG_PCIEAER=y
-CONFIG_PCIEAER_INJECT=m
-CONFIG_PCIE_ECRC=y
-CONFIG_PCIEASPM=y
-# CONFIG_PCIEASPM_DEBUG is not set
-CONFIG_PCIEASPM_DEFAULT=y
-# CONFIG_PCIEASPM_POWERSAVE is not set
-# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
-# CONFIG_PCIEASPM_PERFORMANCE is not set
-CONFIG_PCIE_PME=y
-# CONFIG_PCIE_DPC is not set
-# CONFIG_PCIE_PTM is not set
-CONFIG_PCI_MSI=y
-CONFIG_PCI_MSI_IRQ_DOMAIN=y
-CONFIG_PCI_QUIRKS=y
-# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
-CONFIG_PCI_STUB=y
-# CONFIG_PCI_PF_STUB is not set
-CONFIG_XEN_PCIDEV_FRONTEND=m
-CONFIG_PCI_ATS=y
-CONFIG_PCI_LOCKLESS_CONFIG=y
-CONFIG_PCI_IOV=y
-CONFIG_PCI_PRI=y
-CONFIG_PCI_PASID=y
-CONFIG_PCI_LABEL=y
-# CONFIG_PCI_HYPERV is not set
-CONFIG_HOTPLUG_PCI=y
-CONFIG_HOTPLUG_PCI_ACPI=y
-CONFIG_HOTPLUG_PCI_ACPI_IBM=m
-# CONFIG_HOTPLUG_PCI_CPCI is not set
-# CONFIG_HOTPLUG_PCI_SHPC is not set
-
-#
-# PCI controller drivers
-#
-
-#
-# Cadence PCIe controllers support
-#
-# CONFIG_VMD is not set
-
-#
-# DesignWare PCI Core Support
-#
-# CONFIG_PCIE_DW_PLAT_HOST is not set
-
-#
-# PCI Endpoint
-#
-# CONFIG_PCI_ENDPOINT is not set
-
-#
-# PCI switch controller drivers
-#
-# CONFIG_PCI_SW_SWITCHTEC is not set
-CONFIG_ISA_DMA_API=y
-CONFIG_AMD_NB=y
-CONFIG_PCCARD=y
-CONFIG_PCMCIA=y
-CONFIG_PCMCIA_LOAD_CIS=y
-CONFIG_CARDBUS=y
-
-#
-# PC-card bridges
-#
-CONFIG_YENTA=m
-CONFIG_YENTA_O2=y
-CONFIG_YENTA_RICOH=y
-CONFIG_YENTA_TI=y
-CONFIG_YENTA_ENE_TUNE=y
-CONFIG_YENTA_TOSHIBA=y
-CONFIG_PD6729=m
-CONFIG_I82092=m
-CONFIG_PCCARD_NONSTATIC=y
-# CONFIG_RAPIDIO is not set
-# CONFIG_X86_SYSFB is not set
-
-#
-# Binary Emulations
-#
-CONFIG_IA32_EMULATION=y
-# CONFIG_IA32_AOUT is not set
-CONFIG_X86_X32=y
-CONFIG_COMPAT_32=y
-CONFIG_COMPAT=y
-CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
-CONFIG_SYSVIPC_COMPAT=y
-CONFIG_X86_DEV_DMA_OPS=y
-CONFIG_HAVE_GENERIC_GUP=y
-
-#
-# Firmware Drivers
-#
-CONFIG_EDD=m
-# CONFIG_EDD_OFF is not set
-CONFIG_FIRMWARE_MEMMAP=y
-CONFIG_DELL_RBU=m
-CONFIG_DCDBAS=m
-CONFIG_DMIID=y
-CONFIG_DMI_SYSFS=y
-CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
-CONFIG_ISCSI_IBFT_FIND=y
-CONFIG_ISCSI_IBFT=m
-# CONFIG_FW_CFG_SYSFS is not set
-CONFIG_GOOGLE_FIRMWARE=y
-CONFIG_GOOGLE_SMI=m
-# CONFIG_GOOGLE_COREBOOT_TABLE_ACPI is not set
-# CONFIG_GOOGLE_MEMCONSOLE_X86_LEGACY is not set
-
-#
-# EFI (Extensible Firmware Interface) Support
-#
-CONFIG_EFI_VARS=m
-CONFIG_EFI_ESRT=y
-CONFIG_EFI_VARS_PSTORE=m
-# CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE is not set
-CONFIG_EFI_RUNTIME_MAP=y
-# CONFIG_EFI_FAKE_MEMMAP is not set
-CONFIG_EFI_RUNTIME_WRAPPERS=y
-CONFIG_EFI_BOOTLOADER_CONTROL=m
-CONFIG_EFI_CAPSULE_LOADER=m
-CONFIG_EFI_TEST=m
-CONFIG_APPLE_PROPERTIES=y
-# CONFIG_RESET_ATTACK_MITIGATION is not set
-CONFIG_UEFI_CPER=y
-CONFIG_UEFI_CPER_X86=y
-CONFIG_EFI_DEV_PATH_PARSER=y
-
-#
-# Tegra firmware driver
-#
-CONFIG_HAVE_KVM=y
-CONFIG_HAVE_KVM_IRQCHIP=y
-CONFIG_HAVE_KVM_IRQFD=y
-CONFIG_HAVE_KVM_IRQ_ROUTING=y
-CONFIG_HAVE_KVM_EVENTFD=y
-CONFIG_KVM_MMIO=y
-CONFIG_KVM_ASYNC_PF=y
-CONFIG_HAVE_KVM_MSI=y
-CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
-CONFIG_KVM_VFIO=y
-CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
-CONFIG_KVM_COMPAT=y
-CONFIG_HAVE_KVM_IRQ_BYPASS=y
-CONFIG_VIRTUALIZATION=y
-CONFIG_KVM=m
-CONFIG_KVM_INTEL=m
-CONFIG_KVM_AMD=m
-CONFIG_KVM_AMD_SEV=y
-CONFIG_KVM_MMU_AUDIT=y
-CONFIG_VHOST_NET=m
-CONFIG_VHOST_SCSI=m
-CONFIG_VHOST_VSOCK=m
-CONFIG_VHOST=m
-# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
-
-#
-# General architecture-dependent options
-#
-CONFIG_CRASH_CORE=y
-CONFIG_KEXEC_CORE=y
-CONFIG_HOTPLUG_SMT=y
-CONFIG_OPROFILE=m
-CONFIG_OPROFILE_EVENT_MULTIPLEX=y
-CONFIG_HAVE_OPROFILE=y
-CONFIG_OPROFILE_NMI_TIMER=y
-CONFIG_KPROBES=y
-CONFIG_JUMP_LABEL=y
-# CONFIG_STATIC_KEYS_SELFTEST is not set
-CONFIG_OPTPROBES=y
-CONFIG_KPROBES_ON_FTRACE=y
-CONFIG_UPROBES=y
-CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
-CONFIG_ARCH_USE_BUILTIN_BSWAP=y
-CONFIG_KRETPROBES=y
-CONFIG_USER_RETURN_NOTIFIER=y
-CONFIG_HAVE_IOREMAP_PROT=y
-CONFIG_HAVE_KPROBES=y
-CONFIG_HAVE_KRETPROBES=y
-CONFIG_HAVE_OPTPROBES=y
-CONFIG_HAVE_KPROBES_ON_FTRACE=y
-CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
-CONFIG_HAVE_NMI=y
-CONFIG_HAVE_ARCH_TRACEHOOK=y
-CONFIG_HAVE_DMA_CONTIGUOUS=y
-CONFIG_GENERIC_SMP_IDLE_THREAD=y
-CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
-CONFIG_ARCH_HAS_SET_MEMORY=y
-CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
-CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
-CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
-CONFIG_HAVE_RSEQ=y
-CONFIG_HAVE_CLK=y
-CONFIG_HAVE_HW_BREAKPOINT=y
-CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
-CONFIG_HAVE_USER_RETURN_NOTIFIER=y
-CONFIG_HAVE_PERF_EVENTS_NMI=y
-CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
-CONFIG_HAVE_PERF_REGS=y
-CONFIG_HAVE_PERF_USER_STACK_DUMP=y
-CONFIG_HAVE_ARCH_JUMP_LABEL=y
-CONFIG_HAVE_RCU_TABLE_FREE=y
-CONFIG_HAVE_RCU_TABLE_INVALIDATE=y
-CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
-CONFIG_HAVE_CMPXCHG_LOCAL=y
-CONFIG_HAVE_CMPXCHG_DOUBLE=y
-CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
-CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
-CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
-CONFIG_SECCOMP_FILTER=y
-CONFIG_HAVE_STACKPROTECTOR=y
-CONFIG_CC_HAS_STACKPROTECTOR_NONE=y
-CONFIG_STACKPROTECTOR=y
-CONFIG_STACKPROTECTOR_STRONG=y
-CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
-CONFIG_HAVE_CONTEXT_TRACKING=y
-CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
-CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
-CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
-CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
-CONFIG_HAVE_ARCH_HUGE_VMAP=y
-CONFIG_HAVE_ARCH_SOFT_DIRTY=y
-CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
-CONFIG_MODULES_USE_ELF_RELA=y
-CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
-CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
-CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
-CONFIG_HAVE_EXIT_THREAD=y
-CONFIG_ARCH_MMAP_RND_BITS=28
-CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
-CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
-CONFIG_HAVE_COPY_THREAD_TLS=y
-CONFIG_HAVE_STACK_VALIDATION=y
-CONFIG_HAVE_RELIABLE_STACKTRACE=y
-CONFIG_OLD_SIGSUSPEND3=y
-CONFIG_COMPAT_OLD_SIGACTION=y
-CONFIG_COMPAT_32BIT_TIME=y
-CONFIG_HAVE_ARCH_VMAP_STACK=y
-CONFIG_VMAP_STACK=y
-CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
-CONFIG_STRICT_KERNEL_RWX=y
-CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
-CONFIG_STRICT_MODULE_RWX=y
-CONFIG_ARCH_HAS_REFCOUNT=y
-# CONFIG_REFCOUNT_FULL is not set
-CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
-
-#
-# GCOV-based kernel profiling
-#
-# CONFIG_GCOV_KERNEL is not set
-CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
-CONFIG_PLUGIN_HOSTCC=""
-CONFIG_HAVE_GCC_PLUGINS=y
-CONFIG_RT_MUTEXES=y
-CONFIG_BASE_SMALL=0
-CONFIG_MODULES=y
-CONFIG_MODULE_FORCE_LOAD=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-# CONFIG_MODVERSIONS is not set
-# CONFIG_MODULE_SRCVERSION_ALL is not set
-# CONFIG_MODULE_SIG is not set
-# CONFIG_MODULE_COMPRESS is not set
-CONFIG_MODULES_TREE_LOOKUP=y
-CONFIG_BLOCK=y
-CONFIG_BLK_SCSI_REQUEST=y
-CONFIG_BLK_DEV_BSG=y
-CONFIG_BLK_DEV_BSGLIB=y
-CONFIG_BLK_DEV_INTEGRITY=y
-# CONFIG_BLK_DEV_ZONED is not set
-CONFIG_BLK_DEV_THROTTLING=y
-# CONFIG_BLK_DEV_THROTTLING_LOW is not set
-CONFIG_BLK_CMDLINE_PARSER=y
-# CONFIG_BLK_WBT is not set
-# CONFIG_BLK_CGROUP_IOLATENCY is not set
-CONFIG_BLK_DEBUG_FS=y
-# CONFIG_BLK_SED_OPAL is not set
-
-#
-# Partition Types
-#
-CONFIG_PARTITION_ADVANCED=y
-# CONFIG_ACORN_PARTITION is not set
-# CONFIG_AIX_PARTITION is not set
-CONFIG_OSF_PARTITION=y
-CONFIG_AMIGA_PARTITION=y
-# CONFIG_ATARI_PARTITION is not set
-CONFIG_MAC_PARTITION=y
-CONFIG_MSDOS_PARTITION=y
-CONFIG_BSD_DISKLABEL=y
-CONFIG_MINIX_SUBPARTITION=y
-CONFIG_SOLARIS_X86_PARTITION=y
-CONFIG_UNIXWARE_DISKLABEL=y
-# CONFIG_LDM_PARTITION is not set
-CONFIG_SGI_PARTITION=y
-# CONFIG_ULTRIX_PARTITION is not set
-CONFIG_SUN_PARTITION=y
-CONFIG_KARMA_PARTITION=y
-CONFIG_EFI_PARTITION=y
-# CONFIG_SYSV68_PARTITION is not set
-CONFIG_CMDLINE_PARTITION=y
-CONFIG_BLOCK_COMPAT=y
-CONFIG_BLK_MQ_PCI=y
-CONFIG_BLK_MQ_VIRTIO=y
-CONFIG_BLK_MQ_RDMA=y
-
-#
-# IO Schedulers
-#
-CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_DEADLINE=y
-CONFIG_IOSCHED_CFQ=y
-CONFIG_CFQ_GROUP_IOSCHED=y
-CONFIG_DEFAULT_DEADLINE=y
-# CONFIG_DEFAULT_CFQ is not set
-# CONFIG_DEFAULT_NOOP is not set
-CONFIG_DEFAULT_IOSCHED="deadline"
-CONFIG_MQ_IOSCHED_DEADLINE=y
-CONFIG_MQ_IOSCHED_KYBER=y
-# CONFIG_IOSCHED_BFQ is not set
-CONFIG_PREEMPT_NOTIFIERS=y
-CONFIG_PADATA=y
-CONFIG_ASN1=y
-CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
-CONFIG_INLINE_READ_UNLOCK=y
-CONFIG_INLINE_READ_UNLOCK_IRQ=y
-CONFIG_INLINE_WRITE_UNLOCK=y
-CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
-CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
-CONFIG_MUTEX_SPIN_ON_OWNER=y
-CONFIG_RWSEM_SPIN_ON_OWNER=y
-CONFIG_LOCK_SPIN_ON_OWNER=y
-CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
-CONFIG_QUEUED_SPINLOCKS=y
-CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
-CONFIG_QUEUED_RWLOCKS=y
-CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
-CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
-CONFIG_FREEZER=y
-
-#
-# Executable file formats
-#
-CONFIG_BINFMT_ELF=y
-CONFIG_COMPAT_BINFMT_ELF=y
-CONFIG_ELFCORE=y
-CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
-CONFIG_BINFMT_SCRIPT=y
-CONFIG_BINFMT_MISC=m
-CONFIG_COREDUMP=y
-
-#
-# Memory Management options
-#
-CONFIG_SELECT_MEMORY_MODEL=y
-CONFIG_SPARSEMEM_MANUAL=y
-CONFIG_SPARSEMEM=y
-CONFIG_NEED_MULTIPLE_NODES=y
-CONFIG_HAVE_MEMORY_PRESENT=y
-CONFIG_SPARSEMEM_EXTREME=y
-CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
-CONFIG_SPARSEMEM_VMEMMAP=y
-CONFIG_HAVE_MEMBLOCK=y
-CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
-CONFIG_ARCH_DISCARD_MEMBLOCK=y
-CONFIG_MEMORY_ISOLATION=y
-CONFIG_HAVE_BOOTMEM_INFO_NODE=y
-CONFIG_MEMORY_HOTPLUG=y
-CONFIG_MEMORY_HOTPLUG_SPARSE=y
-# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set
-CONFIG_MEMORY_HOTREMOVE=y
-CONFIG_SPLIT_PTLOCK_CPUS=4
-CONFIG_MEMORY_BALLOON=y
-CONFIG_BALLOON_COMPACTION=y
-CONFIG_COMPACTION=y
-CONFIG_MIGRATION=y
-CONFIG_PHYS_ADDR_T_64BIT=y
-CONFIG_BOUNCE=y
-CONFIG_VIRT_TO_BUS=y
-CONFIG_MMU_NOTIFIER=y
-CONFIG_KSM=y
-CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
-CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
-CONFIG_MEMORY_FAILURE=y
-CONFIG_TRANSPARENT_HUGEPAGE=y
-CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
-# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
-CONFIG_ARCH_WANTS_THP_SWAP=y
-CONFIG_THP_SWAP=y
-CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
-CONFIG_CLEANCACHE=y
-CONFIG_FRONTSWAP=y
-# CONFIG_CMA is not set
-# CONFIG_ZSWAP is not set
-CONFIG_ZPOOL=y
-# CONFIG_ZBUD is not set
-# CONFIG_Z3FOLD is not set
-# CONFIG_ZSMALLOC is not set
-CONFIG_GENERIC_EARLY_IOREMAP=y
-# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
-# CONFIG_IDLE_PAGE_TRACKING is not set
-CONFIG_ARCH_HAS_ZONE_DEVICE=y
-CONFIG_ZONE_DEVICE=y
-CONFIG_ARCH_HAS_HMM=y
-CONFIG_DEV_PAGEMAP_OPS=y
-# CONFIG_HMM_MIRROR is not set
-# CONFIG_DEVICE_PRIVATE is not set
-# CONFIG_DEVICE_PUBLIC is not set
-CONFIG_FRAME_VECTOR=y
-CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
-CONFIG_ARCH_HAS_PKEYS=y
-# CONFIG_PERCPU_STATS is not set
-# CONFIG_GUP_BENCHMARK is not set
-CONFIG_ARCH_HAS_PTE_SPECIAL=y
-CONFIG_NET=y
-CONFIG_COMPAT_NETLINK_MESSAGES=y
-CONFIG_NET_INGRESS=y
-CONFIG_NET_EGRESS=y
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-CONFIG_PACKET_DIAG=m
-CONFIG_UNIX=y
-CONFIG_UNIX_DIAG=m
-# CONFIG_TLS is not set
-CONFIG_XFRM=y
-CONFIG_XFRM_ALGO=y
-CONFIG_XFRM_USER=y
-# CONFIG_XFRM_INTERFACE is not set
-CONFIG_XFRM_SUB_POLICY=y
-CONFIG_XFRM_MIGRATE=y
-CONFIG_XFRM_STATISTICS=y
-CONFIG_XFRM_IPCOMP=m
-CONFIG_NET_KEY=m
-CONFIG_NET_KEY_MIGRATE=y
-# CONFIG_SMC is not set
-# CONFIG_XDP_SOCKETS is not set
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_ADVANCED_ROUTER=y
-CONFIG_IP_FIB_TRIE_STATS=y
-CONFIG_IP_MULTIPLE_TABLES=y
-CONFIG_IP_ROUTE_MULTIPATH=y
-CONFIG_IP_ROUTE_VERBOSE=y
-CONFIG_IP_ROUTE_CLASSID=y
-# CONFIG_IP_PNP is not set
-CONFIG_NET_IPIP=m
-CONFIG_NET_IPGRE_DEMUX=m
-CONFIG_NET_IP_TUNNEL=m
-CONFIG_NET_IPGRE=m
-CONFIG_NET_IPGRE_BROADCAST=y
-CONFIG_IP_MROUTE_COMMON=y
-CONFIG_IP_MROUTE=y
-CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
-CONFIG_IP_PIMSM_V1=y
-CONFIG_IP_PIMSM_V2=y
-CONFIG_SYN_COOKIES=y
-CONFIG_NET_IPVTI=m
-CONFIG_NET_UDP_TUNNEL=m
-# CONFIG_NET_FOU is not set
-# CONFIG_NET_FOU_IP_TUNNELS is not set
-CONFIG_INET_AH=m
-CONFIG_INET_ESP=m
-# CONFIG_INET_ESP_OFFLOAD is not set
-CONFIG_INET_IPCOMP=m
-CONFIG_INET_XFRM_TUNNEL=m
-CONFIG_INET_TUNNEL=m
-CONFIG_INET_XFRM_MODE_TRANSPORT=m
-CONFIG_INET_XFRM_MODE_TUNNEL=m
-CONFIG_INET_XFRM_MODE_BEET=m
-CONFIG_INET_DIAG=m
-CONFIG_INET_TCP_DIAG=m
-CONFIG_INET_UDP_DIAG=m
-# CONFIG_INET_RAW_DIAG is not set
-# CONFIG_INET_DIAG_DESTROY is not set
-CONFIG_TCP_CONG_ADVANCED=y
-CONFIG_TCP_CONG_BIC=m
-CONFIG_TCP_CONG_CUBIC=y
-CONFIG_TCP_CONG_WESTWOOD=m
-CONFIG_TCP_CONG_HTCP=m
-CONFIG_TCP_CONG_HSTCP=m
-CONFIG_TCP_CONG_HYBLA=m
-CONFIG_TCP_CONG_VEGAS=m
-CONFIG_TCP_CONG_NV=m
-CONFIG_TCP_CONG_SCALABLE=m
-CONFIG_TCP_CONG_LP=m
-CONFIG_TCP_CONG_VENO=m
-CONFIG_TCP_CONG_YEAH=m
-CONFIG_TCP_CONG_ILLINOIS=m
-# CONFIG_TCP_CONG_DCTCP is not set
-# CONFIG_TCP_CONG_CDG is not set
-# CONFIG_TCP_CONG_BBR is not set
-CONFIG_DEFAULT_CUBIC=y
-# CONFIG_DEFAULT_RENO is not set
-CONFIG_DEFAULT_TCP_CONG="cubic"
-CONFIG_TCP_MD5SIG=y
-CONFIG_IPV6=y
-CONFIG_IPV6_ROUTER_PREF=y
-CONFIG_IPV6_ROUTE_INFO=y
-CONFIG_IPV6_OPTIMISTIC_DAD=y
-CONFIG_INET6_AH=m
-CONFIG_INET6_ESP=m
-# CONFIG_INET6_ESP_OFFLOAD is not set
-CONFIG_INET6_IPCOMP=m
-CONFIG_IPV6_MIP6=y
-CONFIG_IPV6_ILA=m
-CONFIG_INET6_XFRM_TUNNEL=m
-CONFIG_INET6_TUNNEL=m
-CONFIG_INET6_XFRM_MODE_TRANSPORT=m
-CONFIG_INET6_XFRM_MODE_TUNNEL=m
-CONFIG_INET6_XFRM_MODE_BEET=m
-CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
-CONFIG_IPV6_VTI=m
-CONFIG_IPV6_SIT=m
-CONFIG_IPV6_SIT_6RD=y
-CONFIG_IPV6_NDISC_NODETYPE=y
-CONFIG_IPV6_TUNNEL=m
-CONFIG_IPV6_GRE=m
-CONFIG_IPV6_MULTIPLE_TABLES=y
-CONFIG_IPV6_SUBTREES=y
-CONFIG_IPV6_MROUTE=y
-CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
-CONFIG_IPV6_PIMSM_V2=y
-# CONFIG_IPV6_SEG6_LWTUNNEL is not set
-# CONFIG_IPV6_SEG6_HMAC is not set
-CONFIG_NETLABEL=y
-CONFIG_NETWORK_SECMARK=y
-CONFIG_NET_PTP_CLASSIFY=y
-CONFIG_NETWORK_PHY_TIMESTAMPING=y
-CONFIG_NETFILTER=y
-CONFIG_NETFILTER_ADVANCED=y
-CONFIG_BRIDGE_NETFILTER=m
-
-#
-# Core Netfilter Configuration
-#
-CONFIG_NETFILTER_INGRESS=y
-CONFIG_NETFILTER_NETLINK=m
-CONFIG_NETFILTER_FAMILY_BRIDGE=y
-CONFIG_NETFILTER_FAMILY_ARP=y
-CONFIG_NETFILTER_NETLINK_ACCT=m
-CONFIG_NETFILTER_NETLINK_QUEUE=m
-CONFIG_NETFILTER_NETLINK_LOG=m
-CONFIG_NETFILTER_NETLINK_OSF=m
-CONFIG_NF_CONNTRACK=m
-CONFIG_NF_LOG_COMMON=m
-# CONFIG_NF_LOG_NETDEV is not set
-CONFIG_NETFILTER_CONNCOUNT=m
-CONFIG_NF_CONNTRACK_MARK=y
-CONFIG_NF_CONNTRACK_SECMARK=y
-CONFIG_NF_CONNTRACK_ZONES=y
-CONFIG_NF_CONNTRACK_PROCFS=y
-CONFIG_NF_CONNTRACK_EVENTS=y
-# CONFIG_NF_CONNTRACK_TIMEOUT is not set
-CONFIG_NF_CONNTRACK_TIMESTAMP=y
-CONFIG_NF_CONNTRACK_LABELS=y
-CONFIG_NF_CT_PROTO_DCCP=y
-CONFIG_NF_CT_PROTO_GRE=m
-CONFIG_NF_CT_PROTO_SCTP=y
-CONFIG_NF_CT_PROTO_UDPLITE=y
-CONFIG_NF_CONNTRACK_AMANDA=m
-CONFIG_NF_CONNTRACK_FTP=m
-CONFIG_NF_CONNTRACK_H323=m
-CONFIG_NF_CONNTRACK_IRC=m
-CONFIG_NF_CONNTRACK_BROADCAST=m
-CONFIG_NF_CONNTRACK_NETBIOS_NS=m
-CONFIG_NF_CONNTRACK_SNMP=m
-CONFIG_NF_CONNTRACK_PPTP=m
-CONFIG_NF_CONNTRACK_SANE=m
-CONFIG_NF_CONNTRACK_SIP=m
-CONFIG_NF_CONNTRACK_TFTP=m
-CONFIG_NF_CT_NETLINK=m
-# CONFIG_NETFILTER_NETLINK_GLUE_CT is not set
-CONFIG_NF_NAT=m
-CONFIG_NF_NAT_NEEDED=y
-CONFIG_NF_NAT_PROTO_DCCP=y
-CONFIG_NF_NAT_PROTO_UDPLITE=y
-CONFIG_NF_NAT_PROTO_SCTP=y
-CONFIG_NF_NAT_AMANDA=m
-CONFIG_NF_NAT_FTP=m
-CONFIG_NF_NAT_IRC=m
-CONFIG_NF_NAT_SIP=m
-CONFIG_NF_NAT_TFTP=m
-CONFIG_NF_NAT_REDIRECT=y
-CONFIG_NF_TABLES=m
-# CONFIG_NF_TABLES_SET is not set
-# CONFIG_NF_TABLES_INET is not set
-# CONFIG_NF_TABLES_NETDEV is not set
-# CONFIG_NFT_NUMGEN is not set
-CONFIG_NFT_CT=m
-CONFIG_NFT_COUNTER=m
-# CONFIG_NFT_CONNLIMIT is not set
-CONFIG_NFT_LOG=m
-CONFIG_NFT_LIMIT=m
-# CONFIG_NFT_MASQ is not set
-# CONFIG_NFT_REDIR is not set
-CONFIG_NFT_NAT=m
-# CONFIG_NFT_TUNNEL is not set
-# CONFIG_NFT_OBJREF is not set
-CONFIG_NFT_QUEUE=m
-# CONFIG_NFT_QUOTA is not set
-CONFIG_NFT_REJECT=m
-CONFIG_NFT_COMPAT=m
-CONFIG_NFT_HASH=m
-# CONFIG_NFT_SOCKET is not set
-# CONFIG_NFT_OSF is not set
-# CONFIG_NFT_TPROXY is not set
-# CONFIG_NF_FLOW_TABLE is not set
-CONFIG_NETFILTER_XTABLES=y
-
-#
-# Xtables combined modules
-#
-CONFIG_NETFILTER_XT_MARK=m
-CONFIG_NETFILTER_XT_CONNMARK=m
-CONFIG_NETFILTER_XT_SET=m
-
-#
-# Xtables targets
-#
-CONFIG_NETFILTER_XT_TARGET_AUDIT=m
-CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
-CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
-CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
-CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m
-CONFIG_NETFILTER_XT_TARGET_CT=m
-CONFIG_NETFILTER_XT_TARGET_DSCP=m
-CONFIG_NETFILTER_XT_TARGET_HL=m
-CONFIG_NETFILTER_XT_TARGET_HMARK=m
-CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
-CONFIG_NETFILTER_XT_TARGET_LED=m
-CONFIG_NETFILTER_XT_TARGET_LOG=m
-CONFIG_NETFILTER_XT_TARGET_MARK=m
-CONFIG_NETFILTER_XT_NAT=m
-CONFIG_NETFILTER_XT_TARGET_NETMAP=m
-CONFIG_NETFILTER_XT_TARGET_NFLOG=m
-CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
-CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
-CONFIG_NETFILTER_XT_TARGET_RATEEST=m
-CONFIG_NETFILTER_XT_TARGET_REDIRECT=m
-CONFIG_NETFILTER_XT_TARGET_TEE=m
-CONFIG_NETFILTER_XT_TARGET_TPROXY=m
-CONFIG_NETFILTER_XT_TARGET_TRACE=m
-CONFIG_NETFILTER_XT_TARGET_SECMARK=m
-CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
-CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
-
-#
-# Xtables matches
-#
-CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
-CONFIG_NETFILTER_XT_MATCH_BPF=m
-CONFIG_NETFILTER_XT_MATCH_CGROUP=m
-CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
-CONFIG_NETFILTER_XT_MATCH_COMMENT=m
-CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
-CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
-CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
-CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
-CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
-CONFIG_NETFILTER_XT_MATCH_CPU=m
-CONFIG_NETFILTER_XT_MATCH_DCCP=m
-CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
-CONFIG_NETFILTER_XT_MATCH_DSCP=m
-CONFIG_NETFILTER_XT_MATCH_ECN=m
-CONFIG_NETFILTER_XT_MATCH_ESP=m
-CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
-CONFIG_NETFILTER_XT_MATCH_HELPER=m
-CONFIG_NETFILTER_XT_MATCH_HL=m
-CONFIG_NETFILTER_XT_MATCH_IPCOMP=m
-CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
-CONFIG_NETFILTER_XT_MATCH_IPVS=m
-CONFIG_NETFILTER_XT_MATCH_L2TP=m
-CONFIG_NETFILTER_XT_MATCH_LENGTH=m
-CONFIG_NETFILTER_XT_MATCH_LIMIT=m
-CONFIG_NETFILTER_XT_MATCH_MAC=m
-CONFIG_NETFILTER_XT_MATCH_MARK=m
-CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
-CONFIG_NETFILTER_XT_MATCH_NFACCT=m
-CONFIG_NETFILTER_XT_MATCH_OSF=m
-CONFIG_NETFILTER_XT_MATCH_OWNER=m
-CONFIG_NETFILTER_XT_MATCH_POLICY=m
-CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
-CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
-CONFIG_NETFILTER_XT_MATCH_QUOTA=m
-CONFIG_NETFILTER_XT_MATCH_RATEEST=m
-CONFIG_NETFILTER_XT_MATCH_REALM=m
-CONFIG_NETFILTER_XT_MATCH_RECENT=m
-CONFIG_NETFILTER_XT_MATCH_SCTP=m
-# CONFIG_NETFILTER_XT_MATCH_SOCKET is not set
-CONFIG_NETFILTER_XT_MATCH_STATE=m
-CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
-CONFIG_NETFILTER_XT_MATCH_STRING=m
-CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
-CONFIG_NETFILTER_XT_MATCH_TIME=m
-CONFIG_NETFILTER_XT_MATCH_U32=m
-CONFIG_IP_SET=m
-CONFIG_IP_SET_MAX=256
-CONFIG_IP_SET_BITMAP_IP=m
-CONFIG_IP_SET_BITMAP_IPMAC=m
-CONFIG_IP_SET_BITMAP_PORT=m
-CONFIG_IP_SET_HASH_IP=m
-CONFIG_IP_SET_HASH_IPMARK=m
-CONFIG_IP_SET_HASH_IPPORT=m
-CONFIG_IP_SET_HASH_IPPORTIP=m
-CONFIG_IP_SET_HASH_IPPORTNET=m
-# CONFIG_IP_SET_HASH_IPMAC is not set
-# CONFIG_IP_SET_HASH_MAC is not set
-CONFIG_IP_SET_HASH_NETPORTNET=m
-CONFIG_IP_SET_HASH_NET=m
-CONFIG_IP_SET_HASH_NETNET=m
-CONFIG_IP_SET_HASH_NETPORT=m
-CONFIG_IP_SET_HASH_NETIFACE=m
-CONFIG_IP_SET_LIST_SET=m
-CONFIG_IP_VS=m
-CONFIG_IP_VS_IPV6=y
-# CONFIG_IP_VS_DEBUG is not set
-CONFIG_IP_VS_TAB_BITS=12
-
-#
-# IPVS transport protocol load balancing support
-#
-CONFIG_IP_VS_PROTO_TCP=y
-CONFIG_IP_VS_PROTO_UDP=y
-CONFIG_IP_VS_PROTO_AH_ESP=y
-CONFIG_IP_VS_PROTO_ESP=y
-CONFIG_IP_VS_PROTO_AH=y
-CONFIG_IP_VS_PROTO_SCTP=y
-
-#
-# IPVS scheduler
-#
-CONFIG_IP_VS_RR=m
-CONFIG_IP_VS_WRR=m
-CONFIG_IP_VS_LC=m
-CONFIG_IP_VS_WLC=m
-# CONFIG_IP_VS_FO is not set
-CONFIG_IP_VS_OVF=m
-CONFIG_IP_VS_LBLC=m
-CONFIG_IP_VS_LBLCR=m
-CONFIG_IP_VS_DH=m
-CONFIG_IP_VS_SH=m
-# CONFIG_IP_VS_MH is not set
-CONFIG_IP_VS_SED=m
-CONFIG_IP_VS_NQ=m
-
-#
-# IPVS SH scheduler
-#
-CONFIG_IP_VS_SH_TAB_BITS=8
-
-#
-# IPVS MH scheduler
-#
-CONFIG_IP_VS_MH_TAB_INDEX=12
-
-#
-# IPVS application helper
-#
-CONFIG_IP_VS_FTP=m
-CONFIG_IP_VS_NFCT=y
-CONFIG_IP_VS_PE_SIP=m
-
-#
-# IP: Netfilter Configuration
-#
-CONFIG_NF_DEFRAG_IPV4=m
-# CONFIG_NF_SOCKET_IPV4 is not set
-CONFIG_NF_TPROXY_IPV4=m
-# CONFIG_NF_TABLES_IPV4 is not set
-# CONFIG_NF_TABLES_ARP is not set
-CONFIG_NF_DUP_IPV4=m
-CONFIG_NF_LOG_ARP=m
-CONFIG_NF_LOG_IPV4=m
-CONFIG_NF_REJECT_IPV4=y
-CONFIG_NF_NAT_IPV4=m
-CONFIG_NF_NAT_MASQUERADE_IPV4=y
-CONFIG_NF_NAT_SNMP_BASIC=m
-CONFIG_NF_NAT_PROTO_GRE=m
-CONFIG_NF_NAT_PPTP=m
-CONFIG_NF_NAT_H323=m
-CONFIG_IP_NF_IPTABLES=y
-CONFIG_IP_NF_MATCH_AH=m
-CONFIG_IP_NF_MATCH_ECN=m
-CONFIG_IP_NF_MATCH_RPFILTER=m
-CONFIG_IP_NF_MATCH_TTL=m
-CONFIG_IP_NF_FILTER=y
-CONFIG_IP_NF_TARGET_REJECT=y
-# CONFIG_IP_NF_TARGET_SYNPROXY is not set
-CONFIG_IP_NF_NAT=m
-CONFIG_IP_NF_TARGET_MASQUERADE=m
-CONFIG_IP_NF_TARGET_NETMAP=m
-CONFIG_IP_NF_TARGET_REDIRECT=m
-CONFIG_IP_NF_MANGLE=m
-CONFIG_IP_NF_TARGET_CLUSTERIP=m
-CONFIG_IP_NF_TARGET_ECN=m
-CONFIG_IP_NF_TARGET_TTL=m
-CONFIG_IP_NF_RAW=m
-CONFIG_IP_NF_SECURITY=m
-CONFIG_IP_NF_ARPTABLES=m
-CONFIG_IP_NF_ARPFILTER=m
-CONFIG_IP_NF_ARP_MANGLE=m
-
-#
-# IPv6: Netfilter Configuration
-#
-# CONFIG_NF_SOCKET_IPV6 is not set
-CONFIG_NF_TPROXY_IPV6=m
-# CONFIG_NF_TABLES_IPV6 is not set
-CONFIG_NF_DUP_IPV6=m
-CONFIG_NF_REJECT_IPV6=m
-CONFIG_NF_LOG_IPV6=m
-CONFIG_NF_NAT_IPV6=m
-CONFIG_NF_NAT_MASQUERADE_IPV6=y
-CONFIG_IP6_NF_IPTABLES=m
-CONFIG_IP6_NF_MATCH_AH=m
-CONFIG_IP6_NF_MATCH_EUI64=m
-CONFIG_IP6_NF_MATCH_FRAG=m
-CONFIG_IP6_NF_MATCH_OPTS=m
-CONFIG_IP6_NF_MATCH_HL=m
-CONFIG_IP6_NF_MATCH_IPV6HEADER=m
-CONFIG_IP6_NF_MATCH_MH=m
-CONFIG_IP6_NF_MATCH_RPFILTER=m
-CONFIG_IP6_NF_MATCH_RT=m
-# CONFIG_IP6_NF_MATCH_SRH is not set
-CONFIG_IP6_NF_TARGET_HL=m
-CONFIG_IP6_NF_FILTER=m
-CONFIG_IP6_NF_TARGET_REJECT=m
-# CONFIG_IP6_NF_TARGET_SYNPROXY is not set
-CONFIG_IP6_NF_MANGLE=m
-CONFIG_IP6_NF_RAW=m
-CONFIG_IP6_NF_SECURITY=m
-CONFIG_IP6_NF_NAT=m
-CONFIG_IP6_NF_TARGET_MASQUERADE=m
-CONFIG_IP6_NF_TARGET_NPT=m
-CONFIG_NF_DEFRAG_IPV6=m
-# CONFIG_NF_TABLES_BRIDGE is not set
-CONFIG_BRIDGE_NF_EBTABLES=m
-CONFIG_BRIDGE_EBT_BROUTE=m
-CONFIG_BRIDGE_EBT_T_FILTER=m
-CONFIG_BRIDGE_EBT_T_NAT=m
-CONFIG_BRIDGE_EBT_802_3=m
-CONFIG_BRIDGE_EBT_AMONG=m
-CONFIG_BRIDGE_EBT_ARP=m
-CONFIG_BRIDGE_EBT_IP=m
-CONFIG_BRIDGE_EBT_IP6=m
-CONFIG_BRIDGE_EBT_LIMIT=m
-CONFIG_BRIDGE_EBT_MARK=m
-CONFIG_BRIDGE_EBT_PKTTYPE=m
-CONFIG_BRIDGE_EBT_STP=m
-CONFIG_BRIDGE_EBT_VLAN=m
-CONFIG_BRIDGE_EBT_ARPREPLY=m
-CONFIG_BRIDGE_EBT_DNAT=m
-CONFIG_BRIDGE_EBT_MARK_T=m
-CONFIG_BRIDGE_EBT_REDIRECT=m
-CONFIG_BRIDGE_EBT_SNAT=m
-CONFIG_BRIDGE_EBT_LOG=m
-CONFIG_BRIDGE_EBT_NFLOG=m
-# CONFIG_BPFILTER is not set
-CONFIG_IP_DCCP=m
-CONFIG_INET_DCCP_DIAG=m
-
-#
-# DCCP CCIDs Configuration
-#
-# CONFIG_IP_DCCP_CCID2_DEBUG is not set
-CONFIG_IP_DCCP_CCID3=y
-# CONFIG_IP_DCCP_CCID3_DEBUG is not set
-CONFIG_IP_DCCP_TFRC_LIB=y
-CONFIG_IP_SCTP=m
-# CONFIG_SCTP_DBG_OBJCNT is not set
-CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5=y
-# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1 is not set
-# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set
-CONFIG_SCTP_COOKIE_HMAC_MD5=y
-CONFIG_SCTP_COOKIE_HMAC_SHA1=y
-CONFIG_INET_SCTP_DIAG=m
-CONFIG_RDS=m
-CONFIG_RDS_RDMA=m
-CONFIG_RDS_TCP=m
-# CONFIG_RDS_DEBUG is not set
-# CONFIG_TIPC is not set
-CONFIG_ATM=m
-CONFIG_ATM_CLIP=m
-# CONFIG_ATM_CLIP_NO_ICMP is not set
-CONFIG_ATM_LANE=m
-# CONFIG_ATM_MPOA is not set
-CONFIG_ATM_BR2684=m
-# CONFIG_ATM_BR2684_IPFILTER is not set
-CONFIG_L2TP=m
-CONFIG_L2TP_DEBUGFS=m
-CONFIG_L2TP_V3=y
-CONFIG_L2TP_IP=m
-CONFIG_L2TP_ETH=m
-CONFIG_STP=m
-CONFIG_GARP=m
-CONFIG_MRP=m
-CONFIG_BRIDGE=m
-CONFIG_BRIDGE_IGMP_SNOOPING=y
-CONFIG_BRIDGE_VLAN_FILTERING=y
-CONFIG_HAVE_NET_DSA=y
-CONFIG_NET_DSA=m
-CONFIG_NET_DSA_LEGACY=y
-CONFIG_NET_DSA_TAG_BRCM=y
-CONFIG_NET_DSA_TAG_BRCM_PREPEND=y
-CONFIG_NET_DSA_TAG_DSA=y
-CONFIG_NET_DSA_TAG_EDSA=y
-CONFIG_NET_DSA_TAG_TRAILER=y
-CONFIG_NET_DSA_TAG_QCA=y
-CONFIG_VLAN_8021Q=m
-CONFIG_VLAN_8021Q_GVRP=y
-CONFIG_VLAN_8021Q_MVRP=y
-# CONFIG_DECNET is not set
-CONFIG_LLC=m
-# CONFIG_LLC2 is not set
-CONFIG_ATALK=m
-CONFIG_DEV_APPLETALK=m
-CONFIG_IPDDP=m
-CONFIG_IPDDP_ENCAP=y
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_PHONET is not set
-CONFIG_6LOWPAN=m
-# CONFIG_6LOWPAN_DEBUGFS is not set
-CONFIG_6LOWPAN_NHC=m
-CONFIG_6LOWPAN_NHC_DEST=m
-CONFIG_6LOWPAN_NHC_FRAGMENT=m
-CONFIG_6LOWPAN_NHC_HOP=m
-CONFIG_6LOWPAN_NHC_IPV6=m
-CONFIG_6LOWPAN_NHC_MOBILITY=m
-CONFIG_6LOWPAN_NHC_ROUTING=m
-CONFIG_6LOWPAN_NHC_UDP=m
-# CONFIG_6LOWPAN_GHC_EXT_HDR_HOP is not set
-# CONFIG_6LOWPAN_GHC_UDP is not set
-# CONFIG_6LOWPAN_GHC_ICMPV6 is not set
-# CONFIG_6LOWPAN_GHC_EXT_HDR_DEST is not set
-# CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG is not set
-# CONFIG_6LOWPAN_GHC_EXT_HDR_ROUTE is not set
-CONFIG_IEEE802154=m
-# CONFIG_IEEE802154_NL802154_EXPERIMENTAL is not set
-CONFIG_IEEE802154_SOCKET=m
-CONFIG_IEEE802154_6LOWPAN=m
-CONFIG_MAC802154=m
-CONFIG_NET_SCHED=y
-
-#
-# Queueing/Scheduling
-#
-CONFIG_NET_SCH_CBQ=m
-CONFIG_NET_SCH_HTB=m
-CONFIG_NET_SCH_HFSC=m
-CONFIG_NET_SCH_ATM=m
-CONFIG_NET_SCH_PRIO=m
-CONFIG_NET_SCH_MULTIQ=m
-CONFIG_NET_SCH_RED=m
-CONFIG_NET_SCH_SFB=m
-CONFIG_NET_SCH_SFQ=m
-CONFIG_NET_SCH_TEQL=m
-CONFIG_NET_SCH_TBF=m
-# CONFIG_NET_SCH_CBS is not set
-# CONFIG_NET_SCH_ETF is not set
-CONFIG_NET_SCH_GRED=m
-CONFIG_NET_SCH_DSMARK=m
-CONFIG_NET_SCH_NETEM=m
-CONFIG_NET_SCH_DRR=m
-CONFIG_NET_SCH_MQPRIO=m
-# CONFIG_NET_SCH_SKBPRIO is not set
-CONFIG_NET_SCH_CHOKE=m
-CONFIG_NET_SCH_QFQ=m
-CONFIG_NET_SCH_CODEL=m
-CONFIG_NET_SCH_FQ_CODEL=m
-# CONFIG_NET_SCH_CAKE is not set
-# CONFIG_NET_SCH_FQ is not set
-CONFIG_NET_SCH_HHF=m
-CONFIG_NET_SCH_PIE=m
-CONFIG_NET_SCH_INGRESS=m
-CONFIG_NET_SCH_PLUG=m
-# CONFIG_NET_SCH_DEFAULT is not set
-
-#
-# Classification
-#
-CONFIG_NET_CLS=y
-CONFIG_NET_CLS_BASIC=m
-CONFIG_NET_CLS_TCINDEX=m
-CONFIG_NET_CLS_ROUTE4=m
-CONFIG_NET_CLS_FW=m
-CONFIG_NET_CLS_U32=m
-CONFIG_CLS_U32_PERF=y
-CONFIG_CLS_U32_MARK=y
-CONFIG_NET_CLS_RSVP=m
-CONFIG_NET_CLS_RSVP6=m
-CONFIG_NET_CLS_FLOW=m
-CONFIG_NET_CLS_CGROUP=y
-CONFIG_NET_CLS_BPF=m
-# CONFIG_NET_CLS_FLOWER is not set
-CONFIG_NET_CLS_MATCHALL=m
-CONFIG_NET_EMATCH=y
-CONFIG_NET_EMATCH_STACK=32
-CONFIG_NET_EMATCH_CMP=m
-CONFIG_NET_EMATCH_NBYTE=m
-CONFIG_NET_EMATCH_U32=m
-CONFIG_NET_EMATCH_META=m
-CONFIG_NET_EMATCH_TEXT=m
-CONFIG_NET_EMATCH_IPSET=m
-# CONFIG_NET_EMATCH_IPT is not set
-CONFIG_NET_CLS_ACT=y
-CONFIG_NET_ACT_POLICE=m
-CONFIG_NET_ACT_GACT=m
-CONFIG_GACT_PROB=y
-CONFIG_NET_ACT_MIRRED=m
-# CONFIG_NET_ACT_SAMPLE is not set
-CONFIG_NET_ACT_IPT=m
-CONFIG_NET_ACT_NAT=m
-CONFIG_NET_ACT_PEDIT=m
-CONFIG_NET_ACT_SIMP=m
-CONFIG_NET_ACT_SKBEDIT=m
-CONFIG_NET_ACT_CSUM=m
-# CONFIG_NET_ACT_VLAN is not set
-CONFIG_NET_ACT_BPF=m
-CONFIG_NET_ACT_CONNMARK=m
-# CONFIG_NET_ACT_SKBMOD is not set
-# CONFIG_NET_ACT_IFE is not set
-# CONFIG_NET_ACT_TUNNEL_KEY is not set
-CONFIG_NET_CLS_IND=y
-CONFIG_NET_SCH_FIFO=y
-CONFIG_DCB=y
-CONFIG_DNS_RESOLVER=y
-CONFIG_BATMAN_ADV=m
-# CONFIG_BATMAN_ADV_BATMAN_V is not set
-CONFIG_BATMAN_ADV_BLA=y
-CONFIG_BATMAN_ADV_DAT=y
-# CONFIG_BATMAN_ADV_NC is not set
-# CONFIG_BATMAN_ADV_MCAST is not set
-CONFIG_BATMAN_ADV_DEBUGFS=y
-# CONFIG_BATMAN_ADV_DEBUG is not set
-CONFIG_OPENVSWITCH=m
-CONFIG_OPENVSWITCH_GRE=m
-CONFIG_OPENVSWITCH_VXLAN=m
-CONFIG_OPENVSWITCH_GENEVE=m
-CONFIG_VSOCKETS=m
-CONFIG_VSOCKETS_DIAG=m
-CONFIG_VMWARE_VMCI_VSOCKETS=m
-CONFIG_VIRTIO_VSOCKETS=m
-CONFIG_VIRTIO_VSOCKETS_COMMON=m
-# CONFIG_HYPERV_VSOCKETS is not set
-CONFIG_NETLINK_DIAG=m
-CONFIG_MPLS=y
-CONFIG_NET_MPLS_GSO=m
-CONFIG_MPLS_ROUTING=m
-CONFIG_MPLS_IPTUNNEL=m
-CONFIG_NET_NSH=m
-CONFIG_HSR=m
-CONFIG_NET_SWITCHDEV=y
-CONFIG_NET_L3_MASTER_DEV=y
-# CONFIG_NET_NCSI is not set
-CONFIG_RPS=y
-CONFIG_RFS_ACCEL=y
-CONFIG_XPS=y
-CONFIG_CGROUP_NET_PRIO=y
-CONFIG_CGROUP_NET_CLASSID=y
-CONFIG_NET_RX_BUSY_POLL=y
-CONFIG_BQL=y
-CONFIG_BPF_JIT=y
-# CONFIG_BPF_STREAM_PARSER is not set
-CONFIG_NET_FLOW_LIMIT=y
-
-#
-# Network testing
-#
-CONFIG_NET_PKTGEN=m
-CONFIG_NET_DROP_MONITOR=y
-CONFIG_HAMRADIO=y
-
-#
-# Packet Radio protocols
-#
-CONFIG_AX25=m
-CONFIG_AX25_DAMA_SLAVE=y
-CONFIG_NETROM=m
-CONFIG_ROSE=m
-
-#
-# AX.25 network device drivers
-#
-CONFIG_MKISS=m
-CONFIG_6PACK=m
-CONFIG_BPQETHER=m
-CONFIG_BAYCOM_SER_FDX=m
-CONFIG_BAYCOM_SER_HDX=m
-CONFIG_BAYCOM_PAR=m
-CONFIG_YAM=m
-# CONFIG_CAN is not set
-CONFIG_BT=m
-CONFIG_BT_BREDR=y
-CONFIG_BT_RFCOMM=m
-CONFIG_BT_RFCOMM_TTY=y
-CONFIG_BT_BNEP=m
-CONFIG_BT_BNEP_MC_FILTER=y
-CONFIG_BT_BNEP_PROTO_FILTER=y
-CONFIG_BT_CMTP=m
-CONFIG_BT_HIDP=m
-CONFIG_BT_HS=y
-CONFIG_BT_LE=y
-CONFIG_BT_6LOWPAN=m
-# CONFIG_BT_LEDS is not set
-CONFIG_BT_DEBUGFS=y
-
-#
-# Bluetooth device drivers
-#
-CONFIG_BT_INTEL=m
-CONFIG_BT_BCM=m
-CONFIG_BT_RTL=m
-CONFIG_BT_HCIBTUSB=m
-# CONFIG_BT_HCIBTUSB_AUTOSUSPEND is not set
-CONFIG_BT_HCIBTUSB_BCM=y
-CONFIG_BT_HCIBTUSB_RTL=y
-CONFIG_BT_HCIBTSDIO=m
-CONFIG_BT_HCIUART=m
-CONFIG_BT_HCIUART_H4=y
-CONFIG_BT_HCIUART_BCSP=y
-CONFIG_BT_HCIUART_ATH3K=y
-CONFIG_BT_HCIUART_INTEL=y
-# CONFIG_BT_HCIUART_AG6XX is not set
-# CONFIG_BT_HCIUART_MRVL is not set
-CONFIG_BT_HCIBCM203X=m
-CONFIG_BT_HCIBPA10X=m
-CONFIG_BT_HCIBFUSB=m
-CONFIG_BT_HCIDTL1=m
-CONFIG_BT_HCIBT3C=m
-CONFIG_BT_HCIBLUECARD=m
-CONFIG_BT_HCIVHCI=m
-CONFIG_BT_MRVL=m
-CONFIG_BT_MRVL_SDIO=m
-CONFIG_BT_ATH3K=m
-CONFIG_BT_WILINK=m
-CONFIG_BT_HCIRSI=m
-# CONFIG_AF_RXRPC is not set
-# CONFIG_AF_KCM is not set
-CONFIG_FIB_RULES=y
-CONFIG_WIRELESS=y
-CONFIG_WIRELESS_EXT=y
-CONFIG_WEXT_CORE=y
-CONFIG_WEXT_PROC=y
-CONFIG_WEXT_SPY=y
-CONFIG_WEXT_PRIV=y
-CONFIG_CFG80211=m
-# CONFIG_NL80211_TESTMODE is not set
-# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
-CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y
-CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y
-# CONFIG_CFG80211_DEFAULT_PS is not set
-CONFIG_CFG80211_DEBUGFS=y
-CONFIG_CFG80211_CRDA_SUPPORT=y
-CONFIG_CFG80211_WEXT=y
-CONFIG_CFG80211_WEXT_EXPORT=y
-CONFIG_LIB80211=m
-CONFIG_LIB80211_CRYPT_WEP=m
-CONFIG_LIB80211_CRYPT_CCMP=m
-CONFIG_LIB80211_CRYPT_TKIP=m
-# CONFIG_LIB80211_DEBUG is not set
-CONFIG_MAC80211=m
-CONFIG_MAC80211_HAS_RC=y
-CONFIG_MAC80211_RC_MINSTREL=y
-CONFIG_MAC80211_RC_MINSTREL_HT=y
-CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
-CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
-CONFIG_MAC80211_MESH=y
-CONFIG_MAC80211_LEDS=y
-CONFIG_MAC80211_DEBUGFS=y
-CONFIG_MAC80211_MESSAGE_TRACING=y
-# CONFIG_MAC80211_DEBUG_MENU is not set
-CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
-CONFIG_WIMAX=m
-CONFIG_WIMAX_DEBUG_LEVEL=8
-CONFIG_RFKILL=m
-CONFIG_RFKILL_LEDS=y
-CONFIG_RFKILL_INPUT=y
-CONFIG_RFKILL_GPIO=m
-CONFIG_NET_9P=m
-CONFIG_NET_9P_VIRTIO=m
-# CONFIG_NET_9P_XEN is not set
-CONFIG_NET_9P_RDMA=m
-# CONFIG_NET_9P_DEBUG is not set
-# CONFIG_CAIF is not set
-CONFIG_CEPH_LIB=m
-# CONFIG_CEPH_LIB_PRETTYDEBUG is not set
-# CONFIG_CEPH_LIB_USE_DNS_RESOLVER is not set
-CONFIG_NFC=m
-CONFIG_NFC_DIGITAL=m
-CONFIG_NFC_NCI=m
-# CONFIG_NFC_NCI_UART is not set
-CONFIG_NFC_HCI=m
-CONFIG_NFC_SHDLC=y
-
-#
-# Near Field Communication (NFC) devices
-#
-CONFIG_NFC_MEI_PHY=m
-# CONFIG_NFC_SIM is not set
-CONFIG_NFC_PORT100=m
-CONFIG_NFC_FDP=m
-CONFIG_NFC_FDP_I2C=m
-CONFIG_NFC_PN544=m
-CONFIG_NFC_PN544_I2C=m
-CONFIG_NFC_PN544_MEI=m
-# CONFIG_NFC_PN533_USB is not set
-# CONFIG_NFC_PN533_I2C is not set
-CONFIG_NFC_MICROREAD=m
-CONFIG_NFC_MICROREAD_I2C=m
-CONFIG_NFC_MICROREAD_MEI=m
-CONFIG_NFC_MRVL=m
-CONFIG_NFC_MRVL_USB=m
-CONFIG_NFC_MRVL_I2C=m
-CONFIG_NFC_ST21NFCA=m
-CONFIG_NFC_ST21NFCA_I2C=m
-# CONFIG_NFC_ST_NCI_I2C is not set
-# CONFIG_NFC_NXP_NCI is not set
-CONFIG_NFC_S3FWRN5=m
-CONFIG_NFC_S3FWRN5_I2C=m
-# CONFIG_PSAMPLE is not set
-# CONFIG_NET_IFE is not set
-CONFIG_LWTUNNEL=y
-CONFIG_LWTUNNEL_BPF=y
-CONFIG_DST_CACHE=y
-CONFIG_GRO_CELLS=y
-# CONFIG_NET_DEVLINK is not set
-CONFIG_MAY_USE_DEVLINK=y
-CONFIG_FAILOVER=m
-CONFIG_HAVE_EBPF_JIT=y
-
-#
-# Device Drivers
-#
-
-#
-# Generic Driver Options
-#
-CONFIG_UEVENT_HELPER=y
-CONFIG_UEVENT_HELPER_PATH=""
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-CONFIG_STANDALONE=y
-CONFIG_PREVENT_FIRMWARE_BUILD=y
-
-#
-# Firmware loader
-#
-CONFIG_FW_LOADER=y
-CONFIG_EXTRA_FIRMWARE=""
-CONFIG_FW_LOADER_USER_HELPER=y
-CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
-CONFIG_WANT_DEV_COREDUMP=y
-CONFIG_ALLOW_DEV_COREDUMP=y
-CONFIG_DEV_COREDUMP=y
-# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
-CONFIG_SYS_HYPERVISOR=y
-CONFIG_GENERIC_CPU_AUTOPROBE=y
-CONFIG_GENERIC_CPU_VULNERABILITIES=y
-CONFIG_REGMAP=y
-CONFIG_REGMAP_I2C=m
-CONFIG_REGMAP_MMIO=y
-CONFIG_REGMAP_IRQ=y
-CONFIG_DMA_SHARED_BUFFER=y
-# CONFIG_DMA_FENCE_TRACE is not set
-
-#
-# Bus devices
-#
-CONFIG_CONNECTOR=y
-CONFIG_PROC_EVENTS=y
-# CONFIG_GNSS is not set
-CONFIG_MTD=m
-# CONFIG_MTD_TESTS is not set
-# CONFIG_MTD_REDBOOT_PARTS is not set
-# CONFIG_MTD_CMDLINE_PARTS is not set
-# CONFIG_MTD_AR7_PARTS is not set
-
-#
-# Partition parsers
-#
-
-#
-# User Modules And Translation Layers
-#
-# CONFIG_MTD_BLOCK is not set
-# CONFIG_MTD_BLOCK_RO is not set
-# CONFIG_FTL is not set
-# CONFIG_NFTL is not set
-# CONFIG_INFTL is not set
-# CONFIG_RFD_FTL is not set
-# CONFIG_SSFDC is not set
-# CONFIG_SM_FTL is not set
-# CONFIG_MTD_OOPS is not set
-# CONFIG_MTD_SWAP is not set
-CONFIG_MTD_PARTITIONED_MASTER=y
-
-#
-# RAM/ROM/Flash chip drivers
-#
-# CONFIG_MTD_CFI is not set
-# CONFIG_MTD_JEDECPROBE is not set
-CONFIG_MTD_MAP_BANK_WIDTH_1=y
-CONFIG_MTD_MAP_BANK_WIDTH_2=y
-CONFIG_MTD_MAP_BANK_WIDTH_4=y
-CONFIG_MTD_CFI_I1=y
-CONFIG_MTD_CFI_I2=y
-# CONFIG_MTD_RAM is not set
-# CONFIG_MTD_ROM is not set
-# CONFIG_MTD_ABSENT is not set
-
-#
-# Mapping drivers for chip access
-#
-# CONFIG_MTD_COMPLEX_MAPPINGS is not set
-# CONFIG_MTD_INTEL_VR_NOR is not set
-# CONFIG_MTD_PLATRAM is not set
-
-#
-# Self-contained MTD device drivers
-#
-# CONFIG_MTD_PMC551 is not set
-# CONFIG_MTD_SLRAM is not set
-# CONFIG_MTD_PHRAM is not set
-# CONFIG_MTD_MTDRAM is not set
-# CONFIG_MTD_BLOCK2MTD is not set
-
-#
-# Disk-On-Chip Device Drivers
-#
-# CONFIG_MTD_DOCG3 is not set
-# CONFIG_MTD_ONENAND is not set
-# CONFIG_MTD_NAND is not set
-
-#
-# LPDDR & LPDDR2 PCM memory drivers
-#
-# CONFIG_MTD_LPDDR is not set
-CONFIG_MTD_SPI_NOR=m
-# CONFIG_MTD_MT81xx_NOR is not set
-CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
-# CONFIG_SPI_INTEL_SPI_PCI is not set
-# CONFIG_SPI_INTEL_SPI_PLATFORM is not set
-CONFIG_MTD_UBI=m
-CONFIG_MTD_UBI_WL_THRESHOLD=4096
-CONFIG_MTD_UBI_BEB_LIMIT=20
-# CONFIG_MTD_UBI_FASTMAP is not set
-# CONFIG_MTD_UBI_GLUEBI is not set
-# CONFIG_MTD_UBI_BLOCK is not set
-# CONFIG_OF is not set
-CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
-CONFIG_PARPORT=m
-CONFIG_PARPORT_PC=m
-CONFIG_PARPORT_SERIAL=m
-# CONFIG_PARPORT_PC_FIFO is not set
-# CONFIG_PARPORT_PC_SUPERIO is not set
-CONFIG_PARPORT_PC_PCMCIA=m
-# CONFIG_PARPORT_AX88796 is not set
-CONFIG_PARPORT_1284=y
-CONFIG_PARPORT_NOT_PC=y
-CONFIG_PNP=y
-# CONFIG_PNP_DEBUG_MESSAGES is not set
-
-#
-# Protocols
-#
-CONFIG_PNPACPI=y
-CONFIG_BLK_DEV=y
-# CONFIG_BLK_DEV_NULL_BLK is not set
-CONFIG_BLK_DEV_FD=m
-CONFIG_CDROM=y
-# CONFIG_PARIDE is not set
-CONFIG_BLK_DEV_PCIESSD_MTIP32XX=m
-CONFIG_BLK_DEV_DAC960=m
-CONFIG_BLK_DEV_UMEM=m
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
-CONFIG_BLK_DEV_CRYPTOLOOP=m
-CONFIG_BLK_DEV_DRBD=m
-# CONFIG_DRBD_FAULT_INJECTION is not set
-CONFIG_BLK_DEV_NBD=m
-CONFIG_BLK_DEV_SKD=m
-CONFIG_BLK_DEV_SX8=m
-CONFIG_BLK_DEV_RAM=m
-CONFIG_BLK_DEV_RAM_COUNT=16
-CONFIG_BLK_DEV_RAM_SIZE=16384
-CONFIG_CDROM_PKTCDVD=m
-CONFIG_CDROM_PKTCDVD_BUFFERS=8
-# CONFIG_CDROM_PKTCDVD_WCACHE is not set
-CONFIG_ATA_OVER_ETH=m
-CONFIG_XEN_BLKDEV_FRONTEND=m
-CONFIG_XEN_BLKDEV_BACKEND=m
-CONFIG_VIRTIO_BLK=m
-# CONFIG_VIRTIO_BLK_SCSI is not set
-CONFIG_BLK_DEV_RBD=m
-CONFIG_BLK_DEV_RSXX=m
-
-#
-# NVME Support
-#
-CONFIG_NVME_CORE=m
-CONFIG_BLK_DEV_NVME=m
-# CONFIG_NVME_MULTIPATH is not set
-CONFIG_NVME_FABRICS=m
-CONFIG_NVME_RDMA=m
-# CONFIG_NVME_FC is not set
-CONFIG_NVME_TARGET=m
-CONFIG_NVME_TARGET_LOOP=m
-CONFIG_NVME_TARGET_RDMA=m
-# CONFIG_NVME_TARGET_FC is not set
-
-#
-# Misc devices
-#
-CONFIG_SENSORS_LIS3LV02D=m
-# CONFIG_AD525X_DPOT is not set
-CONFIG_DUMMY_IRQ=m
-# CONFIG_IBM_ASM is not set
-# CONFIG_PHANTOM is not set
-CONFIG_SGI_IOC4=m
-CONFIG_TIFM_CORE=m
-CONFIG_TIFM_7XX1=m
-# CONFIG_ICS932S401 is not set
-CONFIG_ENCLOSURE_SERVICES=m
-CONFIG_HP_ILO=m
-CONFIG_APDS9802ALS=m
-CONFIG_ISL29003=m
-CONFIG_ISL29020=m
-CONFIG_SENSORS_TSL2550=m
-CONFIG_SENSORS_BH1770=m
-CONFIG_SENSORS_APDS990X=m
-# CONFIG_HMC6352 is not set
-# CONFIG_DS1682 is not set
-CONFIG_VMWARE_BALLOON=m
-# CONFIG_USB_SWITCH_FSA9480 is not set
-# CONFIG_SRAM is not set
-# CONFIG_PCI_ENDPOINT_TEST is not set
-# CONFIG_C2PORT is not set
-
-#
-# EEPROM support
-#
-CONFIG_EEPROM_AT24=m
-CONFIG_EEPROM_LEGACY=m
-CONFIG_EEPROM_MAX6875=m
-CONFIG_EEPROM_93CX6=m
-# CONFIG_EEPROM_IDT_89HPESX is not set
-CONFIG_CB710_CORE=m
-# CONFIG_CB710_DEBUG is not set
-CONFIG_CB710_DEBUG_ASSUMPTIONS=y
-
-#
-# Texas Instruments shared transport line discipline
-#
-CONFIG_TI_ST=m
-CONFIG_SENSORS_LIS3_I2C=m
-
-#
-# Altera FPGA firmware download module (requires I2C)
-#
-CONFIG_ALTERA_STAPL=m
-CONFIG_INTEL_MEI=y
-CONFIG_INTEL_MEI_ME=m
-CONFIG_INTEL_MEI_TXE=m
-CONFIG_VMWARE_VMCI=m
-
-#
-# Intel MIC & related support
-#
-
-#
-# Intel MIC Bus Driver
-#
-CONFIG_INTEL_MIC_BUS=m
-
-#
-# SCIF Bus Driver
-#
-# CONFIG_SCIF_BUS is not set
-
-#
-# VOP Bus Driver
-#
-# CONFIG_VOP_BUS is not set
-
-#
-# Intel MIC Host Driver
-#
-
-#
-# Intel MIC Card Driver
-#
-
-#
-# SCIF Driver
-#
-
-#
-# Intel MIC Coprocessor State Management (COSM) Drivers
-#
-
-#
-# VOP Driver
-#
-CONFIG_GENWQE=m
-CONFIG_GENWQE_PLATFORM_ERROR_RECOVERY=1
-# CONFIG_ECHO is not set
-# CONFIG_MISC_RTSX_PCI is not set
-# CONFIG_MISC_RTSX_USB is not set
-CONFIG_HAVE_IDE=y
-# CONFIG_IDE is not set
-
-#
-# SCSI device support
-#
-CONFIG_SCSI_MOD=y
-CONFIG_RAID_ATTRS=m
-CONFIG_SCSI=y
-CONFIG_SCSI_DMA=y
-CONFIG_SCSI_NETLINK=y
-# CONFIG_SCSI_MQ_DEFAULT is not set
-CONFIG_SCSI_PROC_FS=y
-
-#
-# SCSI support type (disk, tape, CD-ROM)
-#
-CONFIG_BLK_DEV_SD=y
-CONFIG_CHR_DEV_ST=m
-CONFIG_CHR_DEV_OSST=m
-CONFIG_BLK_DEV_SR=y
-CONFIG_BLK_DEV_SR_VENDOR=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_CHR_DEV_SCH=m
-CONFIG_SCSI_ENCLOSURE=m
-CONFIG_SCSI_CONSTANTS=y
-CONFIG_SCSI_LOGGING=y
-CONFIG_SCSI_SCAN_ASYNC=y
-
-#
-# SCSI Transports
-#
-CONFIG_SCSI_SPI_ATTRS=m
-CONFIG_SCSI_FC_ATTRS=m
-CONFIG_SCSI_ISCSI_ATTRS=m
-CONFIG_SCSI_SAS_ATTRS=m
-CONFIG_SCSI_SAS_LIBSAS=m
-CONFIG_SCSI_SAS_ATA=y
-CONFIG_SCSI_SAS_HOST_SMP=y
-CONFIG_SCSI_SRP_ATTRS=m
-CONFIG_SCSI_LOWLEVEL=y
-CONFIG_ISCSI_TCP=m
-CONFIG_ISCSI_BOOT_SYSFS=m
-CONFIG_SCSI_CXGB3_ISCSI=m
-CONFIG_SCSI_CXGB4_ISCSI=m
-CONFIG_SCSI_BNX2_ISCSI=m
-CONFIG_SCSI_BNX2X_FCOE=m
-CONFIG_BE2ISCSI=m
-CONFIG_BLK_DEV_3W_XXXX_RAID=m
-CONFIG_SCSI_HPSA=m
-CONFIG_SCSI_3W_9XXX=m
-CONFIG_SCSI_3W_SAS=m
-CONFIG_SCSI_ACARD=m
-CONFIG_SCSI_AACRAID=m
-CONFIG_SCSI_AIC7XXX=m
-CONFIG_AIC7XXX_CMDS_PER_DEVICE=4
-CONFIG_AIC7XXX_RESET_DELAY_MS=15000
-# CONFIG_AIC7XXX_DEBUG_ENABLE is not set
-CONFIG_AIC7XXX_DEBUG_MASK=0
-# CONFIG_AIC7XXX_REG_PRETTY_PRINT is not set
-CONFIG_SCSI_AIC79XX=m
-CONFIG_AIC79XX_CMDS_PER_DEVICE=4
-CONFIG_AIC79XX_RESET_DELAY_MS=15000
-# CONFIG_AIC79XX_DEBUG_ENABLE is not set
-CONFIG_AIC79XX_DEBUG_MASK=0
-# CONFIG_AIC79XX_REG_PRETTY_PRINT is not set
-CONFIG_SCSI_AIC94XX=m
-# CONFIG_AIC94XX_DEBUG is not set
-CONFIG_SCSI_MVSAS=m
-# CONFIG_SCSI_MVSAS_DEBUG is not set
-CONFIG_SCSI_MVSAS_TASKLET=y
-CONFIG_SCSI_MVUMI=m
-# CONFIG_SCSI_DPT_I2O is not set
-CONFIG_SCSI_ADVANSYS=m
-CONFIG_SCSI_ARCMSR=m
-# CONFIG_SCSI_ESAS2R is not set
-CONFIG_MEGARAID_NEWGEN=y
-CONFIG_MEGARAID_MM=m
-CONFIG_MEGARAID_MAILBOX=m
-CONFIG_MEGARAID_LEGACY=m
-CONFIG_MEGARAID_SAS=m
-CONFIG_SCSI_MPT3SAS=m
-CONFIG_SCSI_MPT2SAS_MAX_SGE=128
-CONFIG_SCSI_MPT3SAS_MAX_SGE=128
-CONFIG_SCSI_MPT2SAS=m
-# CONFIG_SCSI_SMARTPQI is not set
-CONFIG_SCSI_UFSHCD=m
-CONFIG_SCSI_UFSHCD_PCI=m
-CONFIG_SCSI_UFS_DWC_TC_PCI=m
-CONFIG_SCSI_UFSHCD_PLATFORM=m
-CONFIG_SCSI_UFS_DWC_TC_PLATFORM=m
-CONFIG_SCSI_HPTIOP=m
-CONFIG_SCSI_BUSLOGIC=m
-# CONFIG_SCSI_FLASHPOINT is not set
-CONFIG_VMWARE_PVSCSI=m
-# CONFIG_XEN_SCSI_FRONTEND is not set
-CONFIG_HYPERV_STORAGE=m
-CONFIG_LIBFC=m
-CONFIG_LIBFCOE=m
-CONFIG_FCOE=m
-CONFIG_FCOE_FNIC=m
-# CONFIG_SCSI_SNIC is not set
-# CONFIG_SCSI_DMX3191D is not set
-CONFIG_SCSI_GDTH=m
-CONFIG_SCSI_ISCI=m
-CONFIG_SCSI_IPS=m
-CONFIG_SCSI_INITIO=m
-CONFIG_SCSI_INIA100=m
-# CONFIG_SCSI_PPA is not set
-# CONFIG_SCSI_IMM is not set
-CONFIG_SCSI_STEX=m
-CONFIG_SCSI_SYM53C8XX_2=m
-CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
-CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
-CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
-CONFIG_SCSI_SYM53C8XX_MMIO=y
-# CONFIG_SCSI_IPR is not set
-CONFIG_SCSI_QLOGIC_1280=m
-CONFIG_SCSI_QLA_FC=m
-CONFIG_TCM_QLA2XXX=m
-# CONFIG_TCM_QLA2XXX_DEBUG is not set
-CONFIG_SCSI_QLA_ISCSI=m
-# CONFIG_QEDI is not set
-# CONFIG_QEDF is not set
-CONFIG_SCSI_LPFC=m
-# CONFIG_SCSI_LPFC_DEBUG_FS is not set
-CONFIG_SCSI_DC395x=m
-# CONFIG_SCSI_AM53C974 is not set
-# CONFIG_SCSI_WD719X is not set
-CONFIG_SCSI_DEBUG=m
-CONFIG_SCSI_PMCRAID=m
-CONFIG_SCSI_PM8001=m
-CONFIG_SCSI_BFA_FC=m
-CONFIG_SCSI_VIRTIO=m
-CONFIG_SCSI_CHELSIO_FCOE=m
-# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
-CONFIG_SCSI_DH=y
-CONFIG_SCSI_DH_RDAC=m
-CONFIG_SCSI_DH_HP_SW=m
-CONFIG_SCSI_DH_EMC=m
-CONFIG_SCSI_DH_ALUA=m
-CONFIG_SCSI_OSD_INITIATOR=m
-CONFIG_SCSI_OSD_ULD=m
-CONFIG_SCSI_OSD_DPRINT_SENSE=1
-# CONFIG_SCSI_OSD_DEBUG is not set
-CONFIG_ATA=y
-CONFIG_ATA_VERBOSE_ERROR=y
-CONFIG_ATA_ACPI=y
-CONFIG_SATA_ZPODD=y
-CONFIG_SATA_PMP=y
-
-#
-# Controllers with non-SFF native interface
-#
-CONFIG_SATA_AHCI=y
-CONFIG_SATA_MOBILE_LPM_POLICY=0
-CONFIG_SATA_AHCI_PLATFORM=m
-CONFIG_SATA_INIC162X=m
-CONFIG_SATA_ACARD_AHCI=m
-CONFIG_SATA_SIL24=m
-CONFIG_ATA_SFF=y
-
-#
-# SFF controllers with custom DMA interface
-#
-CONFIG_PDC_ADMA=m
-CONFIG_SATA_QSTOR=m
-CONFIG_SATA_SX4=m
-CONFIG_ATA_BMDMA=y
-
-#
-# SATA SFF controllers with BMDMA
-#
-CONFIG_ATA_PIIX=y
-# CONFIG_SATA_DWC is not set
-CONFIG_SATA_MV=m
-CONFIG_SATA_NV=m
-CONFIG_SATA_PROMISE=m
-CONFIG_SATA_SIL=m
-CONFIG_SATA_SIS=m
-CONFIG_SATA_SVW=m
-CONFIG_SATA_ULI=m
-CONFIG_SATA_VIA=m
-CONFIG_SATA_VITESSE=m
-
-#
-# PATA SFF controllers with BMDMA
-#
-CONFIG_PATA_ALI=m
-CONFIG_PATA_AMD=m
-CONFIG_PATA_ARTOP=m
-CONFIG_PATA_ATIIXP=m
-CONFIG_PATA_ATP867X=m
-CONFIG_PATA_CMD64X=m
-CONFIG_PATA_CYPRESS=m
-CONFIG_PATA_EFAR=m
-CONFIG_PATA_HPT366=m
-CONFIG_PATA_HPT37X=m
-CONFIG_PATA_HPT3X2N=m
-CONFIG_PATA_HPT3X3=m
-# CONFIG_PATA_HPT3X3_DMA is not set
-CONFIG_PATA_IT8213=m
-CONFIG_PATA_IT821X=m
-CONFIG_PATA_JMICRON=m
-CONFIG_PATA_MARVELL=m
-CONFIG_PATA_NETCELL=m
-CONFIG_PATA_NINJA32=m
-CONFIG_PATA_NS87415=m
-CONFIG_PATA_OLDPIIX=m
-CONFIG_PATA_OPTIDMA=m
-CONFIG_PATA_PDC2027X=m
-CONFIG_PATA_PDC_OLD=m
-# CONFIG_PATA_RADISYS is not set
-CONFIG_PATA_RDC=m
-CONFIG_PATA_SCH=m
-CONFIG_PATA_SERVERWORKS=m
-CONFIG_PATA_SIL680=m
-CONFIG_PATA_SIS=m
-CONFIG_PATA_TOSHIBA=m
-CONFIG_PATA_TRIFLEX=m
-CONFIG_PATA_VIA=m
-CONFIG_PATA_WINBOND=m
-
-#
-# PIO-only SFF controllers
-#
-CONFIG_PATA_CMD640_PCI=m
-CONFIG_PATA_MPIIX=m
-CONFIG_PATA_NS87410=m
-CONFIG_PATA_OPTI=m
-CONFIG_PATA_PCMCIA=m
-# CONFIG_PATA_RZ1000 is not set
-
-#
-# Generic fallback / legacy drivers
-#
-CONFIG_PATA_ACPI=m
-CONFIG_ATA_GENERIC=m
-# CONFIG_PATA_LEGACY is not set
-CONFIG_MD=y
-CONFIG_BLK_DEV_MD=y
-CONFIG_MD_AUTODETECT=y
-CONFIG_MD_LINEAR=m
-CONFIG_MD_RAID0=m
-CONFIG_MD_RAID1=m
-CONFIG_MD_RAID10=m
-CONFIG_MD_RAID456=m
-CONFIG_MD_MULTIPATH=m
-CONFIG_MD_FAULTY=m
-CONFIG_MD_CLUSTER=m
-CONFIG_BCACHE=m
-# CONFIG_BCACHE_DEBUG is not set
-# CONFIG_BCACHE_CLOSURES_DEBUG is not set
-CONFIG_BLK_DEV_DM_BUILTIN=y
-CONFIG_BLK_DEV_DM=y
-CONFIG_DM_MQ_DEFAULT=y
-CONFIG_DM_DEBUG=y
-CONFIG_DM_BUFIO=y
-# CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set
-CONFIG_DM_BIO_PRISON=m
-CONFIG_DM_PERSISTENT_DATA=m
-# CONFIG_DM_UNSTRIPED is not set
-CONFIG_DM_CRYPT=m
-CONFIG_DM_SNAPSHOT=y
-CONFIG_DM_THIN_PROVISIONING=m
-CONFIG_DM_CACHE=m
-CONFIG_DM_CACHE_SMQ=m
-# CONFIG_DM_WRITECACHE is not set
-CONFIG_DM_ERA=m
-CONFIG_DM_MIRROR=y
-CONFIG_DM_LOG_USERSPACE=m
-CONFIG_DM_RAID=m
-CONFIG_DM_ZERO=y
-CONFIG_DM_MULTIPATH=m
-CONFIG_DM_MULTIPATH_QL=m
-CONFIG_DM_MULTIPATH_ST=m
-# CONFIG_DM_DELAY is not set
-CONFIG_DM_UEVENT=y
-CONFIG_DM_FLAKEY=m
-CONFIG_DM_VERITY=m
-# CONFIG_DM_VERITY_FEC is not set
-# CONFIG_DM_SWITCH is not set
-CONFIG_DM_LOG_WRITES=m
-# CONFIG_DM_INTEGRITY is not set
-CONFIG_TARGET_CORE=m
-CONFIG_TCM_IBLOCK=m
-CONFIG_TCM_FILEIO=m
-CONFIG_TCM_PSCSI=m
-CONFIG_TCM_USER2=m
-CONFIG_LOOPBACK_TARGET=m
-CONFIG_TCM_FC=m
-CONFIG_ISCSI_TARGET=m
-# CONFIG_ISCSI_TARGET_CXGB4 is not set
-CONFIG_SBP_TARGET=m
-CONFIG_FUSION=y
-CONFIG_FUSION_SPI=m
-CONFIG_FUSION_FC=m
-CONFIG_FUSION_SAS=m
-CONFIG_FUSION_MAX_SGE=40
-CONFIG_FUSION_CTL=m
-CONFIG_FUSION_LAN=m
-CONFIG_FUSION_LOGGING=y
-
-#
-# IEEE 1394 (FireWire) support
-#
-CONFIG_FIREWIRE=m
-CONFIG_FIREWIRE_OHCI=m
-CONFIG_FIREWIRE_SBP2=m
-CONFIG_FIREWIRE_NET=m
-CONFIG_FIREWIRE_NOSY=m
-CONFIG_MACINTOSH_DRIVERS=y
-CONFIG_MAC_EMUMOUSEBTN=y
-CONFIG_NETDEVICES=y
-CONFIG_MII=m
-CONFIG_NET_CORE=y
-CONFIG_BONDING=m
-CONFIG_DUMMY=m
-CONFIG_EQUALIZER=m
-CONFIG_NET_FC=y
-CONFIG_IFB=m
-CONFIG_NET_TEAM=m
-CONFIG_NET_TEAM_MODE_BROADCAST=m
-CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
-CONFIG_NET_TEAM_MODE_RANDOM=m
-CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
-CONFIG_NET_TEAM_MODE_LOADBALANCE=m
-CONFIG_MACVLAN=m
-CONFIG_MACVTAP=m
-CONFIG_IPVLAN=y
-# CONFIG_IPVTAP is not set
-CONFIG_VXLAN=m
-CONFIG_GENEVE=m
-# CONFIG_GTP is not set
-# CONFIG_MACSEC is not set
-CONFIG_NETCONSOLE=m
-CONFIG_NETCONSOLE_DYNAMIC=y
-CONFIG_NETPOLL=y
-CONFIG_NET_POLL_CONTROLLER=y
-CONFIG_TUN=m
-CONFIG_TAP=m
-# CONFIG_TUN_VNET_CROSS_LE is not set
-CONFIG_VETH=m
-CONFIG_VIRTIO_NET=m
-# CONFIG_NLMON is not set
-# CONFIG_NET_VRF is not set
-# CONFIG_VSOCKMON is not set
-CONFIG_SUNGEM_PHY=m
-# CONFIG_ARCNET is not set
-CONFIG_ATM_DRIVERS=y
-# CONFIG_ATM_DUMMY is not set
-CONFIG_ATM_TCP=m
-# CONFIG_ATM_LANAI is not set
-CONFIG_ATM_ENI=m
-# CONFIG_ATM_ENI_DEBUG is not set
-# CONFIG_ATM_ENI_TUNE_BURST is not set
-CONFIG_ATM_FIRESTREAM=m
-# CONFIG_ATM_ZATM is not set
-CONFIG_ATM_NICSTAR=m
-# CONFIG_ATM_NICSTAR_USE_SUNI is not set
-# CONFIG_ATM_NICSTAR_USE_IDT77105 is not set
-# CONFIG_ATM_IDT77252 is not set
-# CONFIG_ATM_AMBASSADOR is not set
-# CONFIG_ATM_HORIZON is not set
-# CONFIG_ATM_IA is not set
-# CONFIG_ATM_FORE200E is not set
-CONFIG_ATM_HE=m
-# CONFIG_ATM_HE_USE_SUNI is not set
-CONFIG_ATM_SOLOS=m
-
-#
-# CAIF transport drivers
-#
-
-#
-# Distributed Switch Architecture drivers
-#
-CONFIG_B53=m
-CONFIG_B53_MDIO_DRIVER=m
-CONFIG_B53_MMAP_DRIVER=m
-CONFIG_B53_SRAB_DRIVER=m
-# CONFIG_NET_DSA_BCM_SF2 is not set
-# CONFIG_NET_DSA_LOOP is not set
-# CONFIG_NET_DSA_MT7530 is not set
-CONFIG_NET_DSA_MV88E6060=m
-# CONFIG_MICROCHIP_KSZ is not set
-CONFIG_NET_DSA_MV88E6XXX=m
-CONFIG_NET_DSA_MV88E6XXX_GLOBAL2=y
-# CONFIG_NET_DSA_MV88E6XXX_PTP is not set
-CONFIG_NET_DSA_QCA8K=m
-# CONFIG_NET_DSA_REALTEK_SMI is not set
-# CONFIG_NET_DSA_SMSC_LAN9303_I2C is not set
-# CONFIG_NET_DSA_SMSC_LAN9303_MDIO is not set
-CONFIG_ETHERNET=y
-CONFIG_MDIO=m
-CONFIG_NET_VENDOR_3COM=y
-CONFIG_PCMCIA_3C574=m
-CONFIG_PCMCIA_3C589=m
-CONFIG_VORTEX=m
-CONFIG_TYPHOON=m
-CONFIG_NET_VENDOR_ADAPTEC=y
-CONFIG_ADAPTEC_STARFIRE=m
-CONFIG_NET_VENDOR_AGERE=y
-# CONFIG_ET131X is not set
-CONFIG_NET_VENDOR_ALACRITECH=y
-# CONFIG_SLICOSS is not set
-CONFIG_NET_VENDOR_ALTEON=y
-CONFIG_ACENIC=m
-# CONFIG_ACENIC_OMIT_TIGON_I is not set
-CONFIG_ALTERA_TSE=m
-CONFIG_NET_VENDOR_AMAZON=y
-CONFIG_ENA_ETHERNET=m
-CONFIG_NET_VENDOR_AMD=y
-CONFIG_AMD8111_ETH=m
-CONFIG_PCNET32=m
-CONFIG_PCMCIA_NMCLAN=m
-# CONFIG_AMD_XGBE is not set
-CONFIG_NET_VENDOR_AQUANTIA=y
-# CONFIG_AQTION is not set
-CONFIG_NET_VENDOR_ARC=y
-CONFIG_NET_VENDOR_ATHEROS=y
-CONFIG_ATL2=m
-CONFIG_ATL1=m
-CONFIG_ATL1E=m
-CONFIG_ATL1C=m
-CONFIG_ALX=m
-# CONFIG_NET_VENDOR_AURORA is not set
-CONFIG_NET_VENDOR_BROADCOM=y
-CONFIG_B44=m
-CONFIG_B44_PCI_AUTOSELECT=y
-CONFIG_B44_PCICORE_AUTOSELECT=y
-CONFIG_B44_PCI=y
-# CONFIG_BCMGENET is not set
-CONFIG_BNX2=m
-CONFIG_CNIC=m
-CONFIG_TIGON3=m
-CONFIG_TIGON3_HWMON=y
-CONFIG_BNX2X=m
-CONFIG_BNX2X_SRIOV=y
-# CONFIG_SYSTEMPORT is not set
-CONFIG_BNXT=m
-CONFIG_BNXT_SRIOV=y
-CONFIG_BNXT_FLOWER_OFFLOAD=y
-# CONFIG_BNXT_DCB is not set
-CONFIG_BNXT_HWMON=y
-CONFIG_NET_VENDOR_BROCADE=y
-CONFIG_BNA=m
-CONFIG_NET_VENDOR_CADENCE=y
-CONFIG_MACB=m
-CONFIG_MACB_USE_HWSTAMP=y
-# CONFIG_MACB_PCI is not set
-CONFIG_NET_VENDOR_CAVIUM=y
-# CONFIG_THUNDER_NIC_PF is not set
-# CONFIG_THUNDER_NIC_VF is not set
-# CONFIG_THUNDER_NIC_BGX is not set
-CONFIG_THUNDER_NIC_RGX=m
-CONFIG_CAVIUM_PTP=y
-# CONFIG_LIQUIDIO is not set
-# CONFIG_LIQUIDIO_VF is not set
-CONFIG_NET_VENDOR_CHELSIO=y
-CONFIG_CHELSIO_T1=m
-CONFIG_CHELSIO_T1_1G=y
-CONFIG_CHELSIO_T3=m
-CONFIG_CHELSIO_T4=m
-CONFIG_CHELSIO_T4_DCB=y
-CONFIG_CHELSIO_T4_FCOE=y
-CONFIG_CHELSIO_T4VF=m
-CONFIG_CHELSIO_LIB=m
-CONFIG_NET_VENDOR_CISCO=y
-CONFIG_ENIC=m
-CONFIG_NET_VENDOR_CORTINA=y
-CONFIG_CX_ECAT=m
-CONFIG_DNET=m
-CONFIG_NET_VENDOR_DEC=y
-CONFIG_NET_TULIP=y
-CONFIG_DE2104X=m
-CONFIG_DE2104X_DSL=0
-CONFIG_TULIP=m
-# CONFIG_TULIP_MWI is not set
-CONFIG_TULIP_MMIO=y
-# CONFIG_TULIP_NAPI is not set
-CONFIG_DE4X5=m
-CONFIG_WINBOND_840=m
-CONFIG_DM9102=m
-CONFIG_ULI526X=m
-CONFIG_PCMCIA_XIRCOM=m
-CONFIG_NET_VENDOR_DLINK=y
-CONFIG_DL2K=m
-CONFIG_SUNDANCE=m
-# CONFIG_SUNDANCE_MMIO is not set
-CONFIG_NET_VENDOR_EMULEX=y
-CONFIG_BE2NET=m
-CONFIG_BE2NET_HWMON=y
-CONFIG_BE2NET_BE2=y
-CONFIG_BE2NET_BE3=y
-CONFIG_BE2NET_LANCER=y
-CONFIG_BE2NET_SKYHAWK=y
-CONFIG_NET_VENDOR_EZCHIP=y
-# CONFIG_NET_VENDOR_FUJITSU is not set
-# CONFIG_NET_VENDOR_HP is not set
-CONFIG_NET_VENDOR_HUAWEI=y
-# CONFIG_HINIC is not set
-# CONFIG_NET_VENDOR_I825XX is not set
-CONFIG_NET_VENDOR_INTEL=y
-CONFIG_E100=m
-CONFIG_E1000=m
-CONFIG_E1000E=m
-CONFIG_E1000E_HWTS=y
-CONFIG_IGB=m
-CONFIG_IGB_HWMON=y
-CONFIG_IGB_DCA=y
-CONFIG_IGBVF=m
-CONFIG_IXGB=m
-CONFIG_IXGBE=m
-CONFIG_IXGBE_HWMON=y
-CONFIG_IXGBE_DCA=y
-CONFIG_IXGBE_DCB=y
-CONFIG_IXGBEVF=m
-CONFIG_I40E=m
-CONFIG_I40E_DCB=y
-CONFIG_I40EVF=m
-# CONFIG_ICE is not set
-# CONFIG_FM10K is not set
-CONFIG_JME=m
-CONFIG_NET_VENDOR_MARVELL=y
-CONFIG_MVMDIO=m
-CONFIG_SKGE=m
-# CONFIG_SKGE_DEBUG is not set
-CONFIG_SKGE_GENESIS=y
-CONFIG_SKY2=m
-# CONFIG_SKY2_DEBUG is not set
-CONFIG_NET_VENDOR_MELLANOX=y
-CONFIG_MLX4_EN=m
-CONFIG_MLX4_EN_DCB=y
-CONFIG_MLX4_CORE=m
-CONFIG_MLX4_DEBUG=y
-CONFIG_MLX4_CORE_GEN2=y
-# CONFIG_MLX5_CORE is not set
-CONFIG_MLXSW_CORE=m
-CONFIG_MLXSW_CORE_HWMON=y
-CONFIG_MLXSW_CORE_THERMAL=y
-CONFIG_MLXSW_PCI=m
-CONFIG_MLXSW_I2C=m
-CONFIG_MLXSW_SWITCHIB=m
-CONFIG_MLXSW_SWITCHX2=m
-CONFIG_MLXSW_SPECTRUM=m
-CONFIG_MLXSW_SPECTRUM_DCB=y
-CONFIG_MLXSW_MINIMAL=m
-CONFIG_MLXFW=m
-CONFIG_NET_VENDOR_MICREL=y
-# CONFIG_KS8842 is not set
-# CONFIG_KS8851_MLL is not set
-CONFIG_KSZ884X_PCI=m
-CONFIG_NET_VENDOR_MICROSEMI=y
-# CONFIG_MSCC_OCELOT_SWITCH is not set
-CONFIG_NET_VENDOR_MYRI=y
-CONFIG_MYRI10GE=m
-CONFIG_MYRI10GE_DCA=y
-CONFIG_FEALNX=m
-CONFIG_NET_VENDOR_NATSEMI=y
-CONFIG_NATSEMI=m
-CONFIG_NS83820=m
-CONFIG_NET_VENDOR_NETERION=y
-CONFIG_S2IO=m
-CONFIG_VXGE=m
-# CONFIG_VXGE_DEBUG_TRACE_ALL is not set
-CONFIG_NET_VENDOR_NETRONOME=y
-# CONFIG_NFP is not set
-CONFIG_NET_VENDOR_NI=y
-CONFIG_NET_VENDOR_8390=y
-CONFIG_PCMCIA_AXNET=m
-CONFIG_NE2K_PCI=m
-CONFIG_PCMCIA_PCNET=m
-CONFIG_NET_VENDOR_NVIDIA=y
-CONFIG_FORCEDETH=m
-CONFIG_NET_VENDOR_OKI=y
-CONFIG_ETHOC=m
-CONFIG_NET_VENDOR_PACKET_ENGINES=y
-CONFIG_HAMACHI=m
-CONFIG_YELLOWFIN=m
-CONFIG_NET_VENDOR_QLOGIC=y
-CONFIG_QLA3XXX=m
-CONFIG_QLCNIC=m
-CONFIG_QLCNIC_SRIOV=y
-CONFIG_QLCNIC_DCB=y
-CONFIG_QLCNIC_HWMON=y
-CONFIG_QLGE=m
-CONFIG_NETXEN_NIC=m
-CONFIG_QED=m
-CONFIG_QED_LL2=y
-CONFIG_QED_SRIOV=y
-CONFIG_QEDE=m
-CONFIG_QED_RDMA=y
-CONFIG_QED_OOO=y
-CONFIG_NET_VENDOR_QUALCOMM=y
-CONFIG_QCOM_EMAC=m
-# CONFIG_RMNET is not set
-CONFIG_NET_VENDOR_RDC=y
-CONFIG_R6040=m
-CONFIG_NET_VENDOR_REALTEK=y
-CONFIG_ATP=m
-CONFIG_8139CP=m
-CONFIG_8139TOO=m
-# CONFIG_8139TOO_PIO is not set
-# CONFIG_8139TOO_TUNE_TWISTER is not set
-CONFIG_8139TOO_8129=y
-# CONFIG_8139_OLD_RX_RESET is not set
-CONFIG_R8169=m
-CONFIG_NET_VENDOR_RENESAS=y
-CONFIG_NET_VENDOR_ROCKER=y
-CONFIG_ROCKER=m
-CONFIG_NET_VENDOR_SAMSUNG=y
-CONFIG_SXGBE_ETH=m
-# CONFIG_NET_VENDOR_SEEQ is not set
-CONFIG_NET_VENDOR_SOLARFLARE=y
-CONFIG_SFC=m
-# CONFIG_SFC_MTD is not set
-CONFIG_SFC_MCDI_MON=y
-CONFIG_SFC_SRIOV=y
-CONFIG_SFC_MCDI_LOGGING=y
-# CONFIG_SFC_FALCON is not set
-CONFIG_NET_VENDOR_SILAN=y
-CONFIG_SC92031=m
-CONFIG_NET_VENDOR_SIS=y
-CONFIG_SIS900=m
-CONFIG_SIS190=m
-CONFIG_NET_VENDOR_SMSC=y
-CONFIG_PCMCIA_SMC91C92=m
-CONFIG_EPIC100=m
-CONFIG_SMSC911X=m
-CONFIG_SMSC9420=m
-CONFIG_NET_VENDOR_SOCIONEXT=y
-CONFIG_NET_VENDOR_STMICRO=y
-CONFIG_STMMAC_ETH=m
-# CONFIG_STMMAC_PLATFORM is not set
-# CONFIG_STMMAC_PCI is not set
-CONFIG_NET_VENDOR_SUN=y
-CONFIG_HAPPYMEAL=m
-CONFIG_SUNGEM=m
-CONFIG_CASSINI=m
-CONFIG_NIU=m
-CONFIG_NET_VENDOR_SYNOPSYS=y
-# CONFIG_DWC_XLGMAC is not set
-CONFIG_NET_VENDOR_TEHUTI=y
-CONFIG_TEHUTI=m
-CONFIG_NET_VENDOR_TI=y
-CONFIG_TI_CPSW_ALE=m
-CONFIG_TLAN=m
-CONFIG_NET_VENDOR_VIA=y
-CONFIG_VIA_RHINE=m
-CONFIG_VIA_RHINE_MMIO=y
-CONFIG_VIA_VELOCITY=m
-CONFIG_NET_VENDOR_WIZNET=y
-CONFIG_WIZNET_W5100=m
-CONFIG_WIZNET_W5300=m
-# CONFIG_WIZNET_BUS_DIRECT is not set
-# CONFIG_WIZNET_BUS_INDIRECT is not set
-CONFIG_WIZNET_BUS_ANY=y
-CONFIG_NET_VENDOR_XIRCOM=y
-CONFIG_PCMCIA_XIRC2PS=m
-# CONFIG_FDDI is not set
-# CONFIG_HIPPI is not set
-# CONFIG_NET_SB1000 is not set
-CONFIG_MDIO_DEVICE=y
-CONFIG_MDIO_BUS=y
-# CONFIG_MDIO_BCM_UNIMAC is not set
-CONFIG_MDIO_BITBANG=m
-CONFIG_MDIO_CAVIUM=m
-CONFIG_MDIO_GPIO=m
-# CONFIG_MDIO_MSCC_MIIM is not set
-CONFIG_MDIO_THUNDER=m
-CONFIG_PHYLINK=m
-CONFIG_PHYLIB=y
-CONFIG_SWPHY=y
-# CONFIG_LED_TRIGGER_PHY is not set
-
-#
-# MII PHY device drivers
-#
-# CONFIG_SFP is not set
-CONFIG_AMD_PHY=m
-CONFIG_AQUANTIA_PHY=m
-# CONFIG_ASIX_PHY is not set
-CONFIG_AT803X_PHY=m
-CONFIG_BCM7XXX_PHY=m
-CONFIG_BCM87XX_PHY=m
-CONFIG_BCM_NET_PHYLIB=m
-CONFIG_BROADCOM_PHY=m
-CONFIG_CICADA_PHY=m
-# CONFIG_CORTINA_PHY is not set
-CONFIG_DAVICOM_PHY=m
-# CONFIG_DP83822_PHY is not set
-# CONFIG_DP83TC811_PHY is not set
-CONFIG_DP83848_PHY=m
-# CONFIG_DP83867_PHY is not set
-CONFIG_FIXED_PHY=y
-CONFIG_ICPLUS_PHY=m
-CONFIG_INTEL_XWAY_PHY=m
-CONFIG_LSI_ET1011C_PHY=m
-CONFIG_LXT_PHY=m
-CONFIG_MARVELL_PHY=m
-# CONFIG_MARVELL_10G_PHY is not set
-CONFIG_MICREL_PHY=m
-CONFIG_MICROCHIP_PHY=m
-# CONFIG_MICROCHIP_T1_PHY is not set
-CONFIG_MICROSEMI_PHY=m
-CONFIG_NATIONAL_PHY=m
-CONFIG_QSEMI_PHY=m
-CONFIG_REALTEK_PHY=m
-# CONFIG_RENESAS_PHY is not set
-# CONFIG_ROCKCHIP_PHY is not set
-CONFIG_SMSC_PHY=m
-CONFIG_STE10XP=m
-CONFIG_TERANETICS_PHY=m
-CONFIG_VITESSE_PHY=m
-CONFIG_XILINX_GMII2RGMII=m
-# CONFIG_PLIP is not set
-CONFIG_PPP=m
-CONFIG_PPP_BSDCOMP=m
-CONFIG_PPP_DEFLATE=m
-CONFIG_PPP_FILTER=y
-CONFIG_PPP_MPPE=m
-CONFIG_PPP_MULTILINK=y
-CONFIG_PPPOATM=m
-CONFIG_PPPOE=m
-CONFIG_PPTP=m
-CONFIG_PPPOL2TP=m
-CONFIG_PPP_ASYNC=m
-CONFIG_PPP_SYNC_TTY=m
-CONFIG_SLIP=m
-CONFIG_SLHC=m
-CONFIG_SLIP_COMPRESSED=y
-CONFIG_SLIP_SMART=y
-# CONFIG_SLIP_MODE_SLIP6 is not set
-CONFIG_USB_NET_DRIVERS=m
-CONFIG_USB_CATC=m
-CONFIG_USB_KAWETH=m
-CONFIG_USB_PEGASUS=m
-CONFIG_USB_RTL8150=m
-CONFIG_USB_RTL8152=m
-CONFIG_USB_LAN78XX=m
-CONFIG_USB_USBNET=m
-CONFIG_USB_NET_AX8817X=m
-CONFIG_USB_NET_AX88179_178A=m
-CONFIG_USB_NET_CDCETHER=m
-CONFIG_USB_NET_CDC_EEM=m
-CONFIG_USB_NET_CDC_NCM=m
-CONFIG_USB_NET_HUAWEI_CDC_NCM=m
-CONFIG_USB_NET_CDC_MBIM=m
-CONFIG_USB_NET_DM9601=m
-CONFIG_USB_NET_SR9700=m
-CONFIG_USB_NET_SR9800=m
-CONFIG_USB_NET_SMSC75XX=m
-CONFIG_USB_NET_SMSC95XX=m
-CONFIG_USB_NET_GL620A=m
-CONFIG_USB_NET_NET1080=m
-CONFIG_USB_NET_PLUSB=m
-CONFIG_USB_NET_MCS7830=m
-CONFIG_USB_NET_RNDIS_HOST=m
-CONFIG_USB_NET_CDC_SUBSET_ENABLE=m
-CONFIG_USB_NET_CDC_SUBSET=m
-CONFIG_USB_ALI_M5632=y
-CONFIG_USB_AN2720=y
-CONFIG_USB_BELKIN=y
-CONFIG_USB_ARMLINUX=y
-CONFIG_USB_EPSON2888=y
-CONFIG_USB_KC2190=y
-CONFIG_USB_NET_ZAURUS=m
-CONFIG_USB_NET_CX82310_ETH=m
-CONFIG_USB_NET_KALMIA=m
-CONFIG_USB_NET_QMI_WWAN=m
-CONFIG_USB_HSO=m
-CONFIG_USB_NET_INT51X1=m
-CONFIG_USB_IPHETH=m
-CONFIG_USB_SIERRA_NET=m
-CONFIG_USB_VL600=m
-CONFIG_USB_NET_CH9200=m
-CONFIG_WLAN=y
-CONFIG_WLAN_VENDOR_ADMTEK=y
-# CONFIG_ADM8211 is not set
-CONFIG_ATH_COMMON=m
-CONFIG_WLAN_VENDOR_ATH=y
-# CONFIG_ATH_DEBUG is not set
-CONFIG_ATH5K=m
-CONFIG_ATH5K_DEBUG=y
-# CONFIG_ATH5K_TRACER is not set
-CONFIG_ATH5K_PCI=y
-CONFIG_ATH9K_HW=m
-CONFIG_ATH9K_COMMON=m
-CONFIG_ATH9K_COMMON_DEBUG=y
-CONFIG_ATH9K_BTCOEX_SUPPORT=y
-CONFIG_ATH9K=m
-CONFIG_ATH9K_PCI=y
-CONFIG_ATH9K_AHB=y
-CONFIG_ATH9K_DEBUGFS=y
-# CONFIG_ATH9K_STATION_STATISTICS is not set
-# CONFIG_ATH9K_DYNACK is not set
-CONFIG_ATH9K_WOW=y
-CONFIG_ATH9K_RFKILL=y
-# CONFIG_ATH9K_CHANNEL_CONTEXT is not set
-CONFIG_ATH9K_PCOEM=y
-CONFIG_ATH9K_HTC=m
-# CONFIG_ATH9K_HTC_DEBUGFS is not set
-CONFIG_ATH9K_HWRNG=y
-# CONFIG_ATH9K_COMMON_SPECTRAL is not set
-CONFIG_CARL9170=m
-CONFIG_CARL9170_LEDS=y
-# CONFIG_CARL9170_DEBUGFS is not set
-CONFIG_CARL9170_WPC=y
-CONFIG_CARL9170_HWRNG=y
-CONFIG_ATH6KL=m
-CONFIG_ATH6KL_SDIO=m
-CONFIG_ATH6KL_USB=m
-# CONFIG_ATH6KL_DEBUG is not set
-# CONFIG_ATH6KL_TRACING is not set
-CONFIG_AR5523=m
-CONFIG_WIL6210=m
-CONFIG_WIL6210_ISR_COR=y
-CONFIG_WIL6210_TRACING=y
-CONFIG_WIL6210_DEBUGFS=y
-CONFIG_ATH10K=m
-CONFIG_ATH10K_CE=y
-CONFIG_ATH10K_PCI=m
-# CONFIG_ATH10K_SDIO is not set
-# CONFIG_ATH10K_USB is not set
-CONFIG_ATH10K_DEBUG=y
-# CONFIG_ATH10K_DEBUGFS is not set
-# CONFIG_ATH10K_TRACING is not set
-CONFIG_WCN36XX=m
-# CONFIG_WCN36XX_DEBUGFS is not set
-CONFIG_WLAN_VENDOR_ATMEL=y
-# CONFIG_ATMEL is not set
-CONFIG_AT76C50X_USB=m
-CONFIG_WLAN_VENDOR_BROADCOM=y
-CONFIG_B43=m
-CONFIG_B43_BCMA=y
-CONFIG_B43_SSB=y
-CONFIG_B43_BUSES_BCMA_AND_SSB=y
-# CONFIG_B43_BUSES_BCMA is not set
-# CONFIG_B43_BUSES_SSB is not set
-CONFIG_B43_PCI_AUTOSELECT=y
-CONFIG_B43_PCICORE_AUTOSELECT=y
-CONFIG_B43_SDIO=y
-CONFIG_B43_BCMA_PIO=y
-CONFIG_B43_PIO=y
-CONFIG_B43_PHY_G=y
-CONFIG_B43_PHY_N=y
-CONFIG_B43_PHY_LP=y
-CONFIG_B43_PHY_HT=y
-CONFIG_B43_LEDS=y
-CONFIG_B43_HWRNG=y
-CONFIG_B43_DEBUG=y
-CONFIG_B43LEGACY=m
-CONFIG_B43LEGACY_PCI_AUTOSELECT=y
-CONFIG_B43LEGACY_PCICORE_AUTOSELECT=y
-CONFIG_B43LEGACY_LEDS=y
-CONFIG_B43LEGACY_HWRNG=y
-CONFIG_B43LEGACY_DEBUG=y
-CONFIG_B43LEGACY_DMA=y
-CONFIG_B43LEGACY_PIO=y
-CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
-# CONFIG_B43LEGACY_DMA_MODE is not set
-# CONFIG_B43LEGACY_PIO_MODE is not set
-CONFIG_BRCMUTIL=m
-CONFIG_BRCMSMAC=m
-CONFIG_BRCMFMAC=m
-CONFIG_BRCMFMAC_PROTO_BCDC=y
-CONFIG_BRCMFMAC_PROTO_MSGBUF=y
-CONFIG_BRCMFMAC_SDIO=y
-CONFIG_BRCMFMAC_USB=y
-CONFIG_BRCMFMAC_PCIE=y
-# CONFIG_BRCM_TRACING is not set
-# CONFIG_BRCMDBG is not set
-CONFIG_WLAN_VENDOR_CISCO=y
-# CONFIG_AIRO is not set
-# CONFIG_AIRO_CS is not set
-CONFIG_WLAN_VENDOR_INTEL=y
-CONFIG_IPW2100=m
-CONFIG_IPW2100_MONITOR=y
-# CONFIG_IPW2100_DEBUG is not set
-CONFIG_IPW2200=m
-CONFIG_IPW2200_MONITOR=y
-CONFIG_IPW2200_RADIOTAP=y
-CONFIG_IPW2200_PROMISCUOUS=y
-CONFIG_IPW2200_QOS=y
-# CONFIG_IPW2200_DEBUG is not set
-CONFIG_LIBIPW=m
-# CONFIG_LIBIPW_DEBUG is not set
-CONFIG_IWLEGACY=m
-CONFIG_IWL4965=m
-CONFIG_IWL3945=m
-
-#
-# iwl3945 / iwl4965 Debugging Options
-#
-CONFIG_IWLEGACY_DEBUG=y
-CONFIG_IWLEGACY_DEBUGFS=y
-CONFIG_IWLWIFI=m
-CONFIG_IWLWIFI_LEDS=y
-CONFIG_IWLDVM=m
-CONFIG_IWLMVM=m
-CONFIG_IWLWIFI_OPMODE_MODULAR=y
-# CONFIG_IWLWIFI_BCAST_FILTERING is not set
-
-#
-# Debugging Options
-#
-CONFIG_IWLWIFI_DEBUG=y
-CONFIG_IWLWIFI_DEBUGFS=y
-CONFIG_IWLWIFI_DEVICE_TRACING=y
-CONFIG_WLAN_VENDOR_INTERSIL=y
-# CONFIG_HOSTAP is not set
-# CONFIG_HERMES is not set
-CONFIG_P54_COMMON=m
-CONFIG_P54_USB=m
-CONFIG_P54_PCI=m
-CONFIG_P54_LEDS=y
-# CONFIG_PRISM54 is not set
-CONFIG_WLAN_VENDOR_MARVELL=y
-CONFIG_LIBERTAS=m
-CONFIG_LIBERTAS_USB=m
-CONFIG_LIBERTAS_CS=m
-CONFIG_LIBERTAS_SDIO=m
-# CONFIG_LIBERTAS_DEBUG is not set
-CONFIG_LIBERTAS_MESH=y
-# CONFIG_LIBERTAS_THINFIRM is not set
-CONFIG_MWIFIEX=m
-CONFIG_MWIFIEX_SDIO=m
-CONFIG_MWIFIEX_PCIE=m
-CONFIG_MWIFIEX_USB=m
-CONFIG_MWL8K=m
-CONFIG_WLAN_VENDOR_MEDIATEK=y
-CONFIG_MT7601U=m
-# CONFIG_MT76x0U is not set
-# CONFIG_MT76x2E is not set
-# CONFIG_MT76x2U is not set
-CONFIG_WLAN_VENDOR_RALINK=y
-CONFIG_RT2X00=m
-CONFIG_RT2400PCI=m
-CONFIG_RT2500PCI=m
-CONFIG_RT61PCI=m
-CONFIG_RT2800PCI=m
-CONFIG_RT2800PCI_RT33XX=y
-CONFIG_RT2800PCI_RT35XX=y
-CONFIG_RT2800PCI_RT53XX=y
-CONFIG_RT2800PCI_RT3290=y
-CONFIG_RT2500USB=m
-CONFIG_RT73USB=m
-CONFIG_RT2800USB=m
-CONFIG_RT2800USB_RT33XX=y
-CONFIG_RT2800USB_RT35XX=y
-# CONFIG_RT2800USB_RT3573 is not set
-CONFIG_RT2800USB_RT53XX=y
-CONFIG_RT2800USB_RT55XX=y
-CONFIG_RT2800USB_UNKNOWN=y
-CONFIG_RT2800_LIB=m
-CONFIG_RT2800_LIB_MMIO=m
-CONFIG_RT2X00_LIB_MMIO=m
-CONFIG_RT2X00_LIB_PCI=m
-CONFIG_RT2X00_LIB_USB=m
-CONFIG_RT2X00_LIB=m
-CONFIG_RT2X00_LIB_FIRMWARE=y
-CONFIG_RT2X00_LIB_CRYPTO=y
-CONFIG_RT2X00_LIB_LEDS=y
-CONFIG_RT2X00_LIB_DEBUGFS=y
-# CONFIG_RT2X00_DEBUG is not set
-CONFIG_WLAN_VENDOR_REALTEK=y
-CONFIG_RTL8180=m
-CONFIG_RTL8187=m
-CONFIG_RTL8187_LEDS=y
-CONFIG_RTL_CARDS=m
-CONFIG_RTL8192CE=m
-CONFIG_RTL8192SE=m
-CONFIG_RTL8192DE=m
-CONFIG_RTL8723AE=m
-CONFIG_RTL8723BE=m
-CONFIG_RTL8188EE=m
-CONFIG_RTL8192EE=m
-CONFIG_RTL8821AE=m
-CONFIG_RTL8192CU=m
-CONFIG_RTLWIFI=m
-CONFIG_RTLWIFI_PCI=m
-CONFIG_RTLWIFI_USB=m
-# CONFIG_RTLWIFI_DEBUG is not set
-CONFIG_RTL8192C_COMMON=m
-CONFIG_RTL8723_COMMON=m
-CONFIG_RTLBTCOEXIST=m
-CONFIG_RTL8XXXU=m
-# CONFIG_RTL8XXXU_UNTESTED is not set
-CONFIG_WLAN_VENDOR_RSI=y
-CONFIG_RSI_91X=m
-CONFIG_RSI_DEBUGFS=y
-CONFIG_RSI_SDIO=m
-CONFIG_RSI_USB=m
-CONFIG_RSI_COEX=y
-CONFIG_WLAN_VENDOR_ST=y
-CONFIG_CW1200=m
-CONFIG_CW1200_WLAN_SDIO=m
-CONFIG_WLAN_VENDOR_TI=y
-# CONFIG_WL1251 is not set
-# CONFIG_WL12XX is not set
-# CONFIG_WL18XX is not set
-# CONFIG_WLCORE is not set
-CONFIG_WLAN_VENDOR_ZYDAS=y
-# CONFIG_USB_ZD1201 is not set
-CONFIG_ZD1211RW=m
-# CONFIG_ZD1211RW_DEBUG is not set
-CONFIG_WLAN_VENDOR_QUANTENNA=y
-# CONFIG_QTNFMAC_PEARL_PCIE is not set
-# CONFIG_PCMCIA_RAYCS is not set
-# CONFIG_PCMCIA_WL3501 is not set
-CONFIG_MAC80211_HWSIM=m
-CONFIG_USB_NET_RNDIS_WLAN=m
-
-#
-# WiMAX Wireless Broadband devices
-#
-CONFIG_WIMAX_I2400M=m
-CONFIG_WIMAX_I2400M_USB=m
-CONFIG_WIMAX_I2400M_DEBUG_LEVEL=8
-# CONFIG_WAN is not set
-CONFIG_IEEE802154_DRIVERS=m
-CONFIG_IEEE802154_FAKELB=m
-# CONFIG_IEEE802154_ATUSB is not set
-# CONFIG_IEEE802154_HWSIM is not set
-CONFIG_XEN_NETDEV_FRONTEND=m
-CONFIG_XEN_NETDEV_BACKEND=m
-CONFIG_VMXNET3=m
-CONFIG_FUJITSU_ES=m
-# CONFIG_THUNDERBOLT_NET is not set
-CONFIG_HYPERV_NET=m
-# CONFIG_NETDEVSIM is not set
-CONFIG_NET_FAILOVER=m
-CONFIG_ISDN=y
-CONFIG_ISDN_I4L=m
-CONFIG_ISDN_PPP=y
-CONFIG_ISDN_PPP_VJ=y
-CONFIG_ISDN_MPP=y
-CONFIG_IPPP_FILTER=y
-# CONFIG_ISDN_PPP_BSDCOMP is not set
-CONFIG_ISDN_AUDIO=y
-CONFIG_ISDN_TTY_FAX=y
-
-#
-# ISDN feature submodules
-#
-CONFIG_ISDN_DIVERSION=m
-
-#
-# ISDN4Linux hardware drivers
-#
-
-#
-# Passive cards
-#
-CONFIG_ISDN_DRV_HISAX=m
-
-#
-# D-channel protocol features
-#
-CONFIG_HISAX_EURO=y
-CONFIG_DE_AOC=y
-CONFIG_HISAX_NO_SENDCOMPLETE=y
-CONFIG_HISAX_NO_LLC=y
-CONFIG_HISAX_NO_KEYPAD=y
-CONFIG_HISAX_1TR6=y
-CONFIG_HISAX_NI1=y
-CONFIG_HISAX_MAX_CARDS=8
-
-#
-# HiSax supported cards
-#
-CONFIG_HISAX_16_3=y
-CONFIG_HISAX_TELESPCI=y
-CONFIG_HISAX_S0BOX=y
-CONFIG_HISAX_FRITZPCI=y
-CONFIG_HISAX_AVM_A1_PCMCIA=y
-CONFIG_HISAX_ELSA=y
-CONFIG_HISAX_DIEHLDIVA=y
-CONFIG_HISAX_SEDLBAUER=y
-CONFIG_HISAX_NETJET=y
-CONFIG_HISAX_NETJET_U=y
-CONFIG_HISAX_NICCY=y
-CONFIG_HISAX_BKM_A4T=y
-CONFIG_HISAX_SCT_QUADRO=y
-CONFIG_HISAX_GAZEL=y
-CONFIG_HISAX_HFC_PCI=y
-CONFIG_HISAX_W6692=y
-CONFIG_HISAX_HFC_SX=y
-CONFIG_HISAX_ENTERNOW_PCI=y
-# CONFIG_HISAX_DEBUG is not set
-
-#
-# HiSax PCMCIA card service modules
-#
-CONFIG_HISAX_SEDLBAUER_CS=m
-CONFIG_HISAX_ELSA_CS=m
-CONFIG_HISAX_AVM_A1_CS=m
-CONFIG_HISAX_TELES_CS=m
-
-#
-# HiSax sub driver modules
-#
-CONFIG_HISAX_ST5481=m
-# CONFIG_HISAX_HFCUSB is not set
-CONFIG_HISAX_HFC4S8S=m
-CONFIG_HISAX_FRITZ_PCIPNP=m
-CONFIG_ISDN_CAPI=m
-# CONFIG_CAPI_TRACE is not set
-CONFIG_ISDN_CAPI_CAPI20=m
-CONFIG_ISDN_CAPI_MIDDLEWARE=y
-CONFIG_ISDN_CAPI_CAPIDRV=m
-# CONFIG_ISDN_CAPI_CAPIDRV_VERBOSE is not set
-
-#
-# CAPI hardware drivers
-#
-CONFIG_CAPI_AVM=y
-CONFIG_ISDN_DRV_AVMB1_B1PCI=m
-CONFIG_ISDN_DRV_AVMB1_B1PCIV4=y
-CONFIG_ISDN_DRV_AVMB1_B1PCMCIA=m
-CONFIG_ISDN_DRV_AVMB1_AVM_CS=m
-CONFIG_ISDN_DRV_AVMB1_T1PCI=m
-CONFIG_ISDN_DRV_AVMB1_C4=m
-CONFIG_CAPI_EICON=y
-CONFIG_ISDN_DIVAS=m
-CONFIG_ISDN_DIVAS_BRIPCI=y
-CONFIG_ISDN_DIVAS_PRIPCI=y
-CONFIG_ISDN_DIVAS_DIVACAPI=m
-CONFIG_ISDN_DIVAS_USERIDI=m
-CONFIG_ISDN_DIVAS_MAINT=m
-CONFIG_ISDN_DRV_GIGASET=m
-CONFIG_GIGASET_CAPI=y
-CONFIG_GIGASET_BASE=m
-CONFIG_GIGASET_M105=m
-CONFIG_GIGASET_M101=m
-# CONFIG_GIGASET_DEBUG is not set
-CONFIG_HYSDN=m
-CONFIG_HYSDN_CAPI=y
-CONFIG_MISDN=m
-CONFIG_MISDN_DSP=m
-CONFIG_MISDN_L1OIP=m
-
-#
-# mISDN hardware drivers
-#
-CONFIG_MISDN_HFCPCI=m
-CONFIG_MISDN_HFCMULTI=m
-CONFIG_MISDN_HFCUSB=m
-CONFIG_MISDN_AVMFRITZ=m
-CONFIG_MISDN_SPEEDFAX=m
-CONFIG_MISDN_INFINEON=m
-CONFIG_MISDN_W6692=m
-CONFIG_MISDN_NETJET=m
-CONFIG_MISDN_IPAC=m
-CONFIG_MISDN_ISAR=m
-CONFIG_ISDN_HDLC=m
-# CONFIG_NVM is not set
-
-#
-# Input device support
-#
-CONFIG_INPUT=y
-CONFIG_INPUT_LEDS=y
-CONFIG_INPUT_FF_MEMLESS=y
-CONFIG_INPUT_POLLDEV=m
-CONFIG_INPUT_SPARSEKMAP=m
-CONFIG_INPUT_MATRIXKMAP=m
-
-#
-# Userland interfaces
-#
-CONFIG_INPUT_MOUSEDEV=y
-# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
-CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
-CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
-CONFIG_INPUT_JOYDEV=m
-CONFIG_INPUT_EVDEV=y
-# CONFIG_INPUT_EVBUG is not set
-
-#
-# Input Device Drivers
-#
-CONFIG_INPUT_KEYBOARD=y
-# CONFIG_KEYBOARD_ADP5588 is not set
-# CONFIG_KEYBOARD_ADP5589 is not set
-CONFIG_KEYBOARD_ATKBD=y
-# CONFIG_KEYBOARD_QT1070 is not set
-# CONFIG_KEYBOARD_QT2160 is not set
-# CONFIG_KEYBOARD_DLINK_DIR685 is not set
-# CONFIG_KEYBOARD_LKKBD is not set
-CONFIG_KEYBOARD_GPIO=m
-CONFIG_KEYBOARD_GPIO_POLLED=m
-# CONFIG_KEYBOARD_TCA6416 is not set
-# CONFIG_KEYBOARD_TCA8418 is not set
-CONFIG_KEYBOARD_MATRIX=m
-# CONFIG_KEYBOARD_LM8323 is not set
-# CONFIG_KEYBOARD_LM8333 is not set
-# CONFIG_KEYBOARD_MAX7359 is not set
-# CONFIG_KEYBOARD_MCS is not set
-# CONFIG_KEYBOARD_MPR121 is not set
-# CONFIG_KEYBOARD_NEWTON is not set
-# CONFIG_KEYBOARD_OPENCORES is not set
-CONFIG_KEYBOARD_SAMSUNG=m
-# CONFIG_KEYBOARD_STOWAWAY is not set
-# CONFIG_KEYBOARD_SUNKBD is not set
-# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
-# CONFIG_KEYBOARD_XTKBD is not set
-CONFIG_KEYBOARD_CROS_EC=m
-# CONFIG_KEYBOARD_MTK_PMIC is not set
-CONFIG_INPUT_MOUSE=y
-CONFIG_MOUSE_PS2=y
-CONFIG_MOUSE_PS2_ALPS=y
-CONFIG_MOUSE_PS2_BYD=y
-CONFIG_MOUSE_PS2_LOGIPS2PP=y
-CONFIG_MOUSE_PS2_SYNAPTICS=y
-CONFIG_MOUSE_PS2_CYPRESS=y
-CONFIG_MOUSE_PS2_LIFEBOOK=y
-CONFIG_MOUSE_PS2_TRACKPOINT=y
-CONFIG_MOUSE_PS2_ELANTECH=y
-CONFIG_MOUSE_PS2_SENTELIC=y
-# CONFIG_MOUSE_PS2_TOUCHKIT is not set
-CONFIG_MOUSE_PS2_FOCALTECH=y
-CONFIG_MOUSE_PS2_VMMOUSE=y
-CONFIG_MOUSE_SERIAL=m
-CONFIG_MOUSE_APPLETOUCH=m
-CONFIG_MOUSE_BCM5974=m
-CONFIG_MOUSE_CYAPA=m
-# CONFIG_MOUSE_ELAN_I2C is not set
-CONFIG_MOUSE_VSXXXAA=m
-CONFIG_MOUSE_GPIO=m
-CONFIG_MOUSE_SYNAPTICS_I2C=m
-CONFIG_MOUSE_SYNAPTICS_USB=m
-CONFIG_INPUT_JOYSTICK=y
-CONFIG_JOYSTICK_ANALOG=m
-CONFIG_JOYSTICK_A3D=m
-CONFIG_JOYSTICK_ADI=m
-CONFIG_JOYSTICK_COBRA=m
-CONFIG_JOYSTICK_GF2K=m
-CONFIG_JOYSTICK_GRIP=m
-CONFIG_JOYSTICK_GRIP_MP=m
-CONFIG_JOYSTICK_GUILLEMOT=m
-CONFIG_JOYSTICK_INTERACT=m
-CONFIG_JOYSTICK_SIDEWINDER=m
-CONFIG_JOYSTICK_TMDC=m
-CONFIG_JOYSTICK_IFORCE=m
-CONFIG_JOYSTICK_IFORCE_USB=y
-CONFIG_JOYSTICK_IFORCE_232=y
-CONFIG_JOYSTICK_WARRIOR=m
-CONFIG_JOYSTICK_MAGELLAN=m
-CONFIG_JOYSTICK_SPACEORB=m
-CONFIG_JOYSTICK_SPACEBALL=m
-CONFIG_JOYSTICK_STINGER=m
-CONFIG_JOYSTICK_TWIDJOY=m
-CONFIG_JOYSTICK_ZHENHUA=m
-CONFIG_JOYSTICK_DB9=m
-CONFIG_JOYSTICK_GAMECON=m
-CONFIG_JOYSTICK_TURBOGRAFX=m
-# CONFIG_JOYSTICK_AS5011 is not set
-CONFIG_JOYSTICK_JOYDUMP=m
-CONFIG_JOYSTICK_XPAD=m
-CONFIG_JOYSTICK_XPAD_FF=y
-CONFIG_JOYSTICK_XPAD_LEDS=y
-CONFIG_JOYSTICK_WALKERA0701=m
-# CONFIG_JOYSTICK_PXRC is not set
-CONFIG_INPUT_TABLET=y
-CONFIG_TABLET_USB_ACECAD=m
-CONFIG_TABLET_USB_AIPTEK=m
-CONFIG_TABLET_USB_GTCO=m
-CONFIG_TABLET_USB_HANWANG=m
-CONFIG_TABLET_USB_KBTAB=m
-CONFIG_TABLET_USB_PEGASUS=m
-CONFIG_TABLET_SERIAL_WACOM4=m
-CONFIG_INPUT_TOUCHSCREEN=y
-CONFIG_TOUCHSCREEN_PROPERTIES=y
-CONFIG_TOUCHSCREEN_AD7879=m
-CONFIG_TOUCHSCREEN_AD7879_I2C=m
-CONFIG_TOUCHSCREEN_ATMEL_MXT=m
-CONFIG_TOUCHSCREEN_ATMEL_MXT_T37=y
-CONFIG_TOUCHSCREEN_AUO_PIXCIR=m
-CONFIG_TOUCHSCREEN_BU21013=m
-# CONFIG_TOUCHSCREEN_BU21029 is not set
-# CONFIG_TOUCHSCREEN_CHIPONE_ICN8505 is not set
-CONFIG_TOUCHSCREEN_CY8CTMG110=m
-CONFIG_TOUCHSCREEN_CYTTSP_CORE=m
-CONFIG_TOUCHSCREEN_CYTTSP_I2C=m
-CONFIG_TOUCHSCREEN_CYTTSP4_CORE=m
-CONFIG_TOUCHSCREEN_CYTTSP4_I2C=m
-CONFIG_TOUCHSCREEN_DYNAPRO=m
-CONFIG_TOUCHSCREEN_HAMPSHIRE=m
-CONFIG_TOUCHSCREEN_EETI=m
-# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
-# CONFIG_TOUCHSCREEN_EXC3000 is not set
-CONFIG_TOUCHSCREEN_FUJITSU=m
-# CONFIG_TOUCHSCREEN_GOODIX is not set
-# CONFIG_TOUCHSCREEN_HIDEEP is not set
-CONFIG_TOUCHSCREEN_ILI210X=m
-# CONFIG_TOUCHSCREEN_S6SY761 is not set
-CONFIG_TOUCHSCREEN_GUNZE=m
-CONFIG_TOUCHSCREEN_EKTF2127=m
-# CONFIG_TOUCHSCREEN_ELAN is not set
-CONFIG_TOUCHSCREEN_ELO=m
-CONFIG_TOUCHSCREEN_WACOM_W8001=m
-CONFIG_TOUCHSCREEN_WACOM_I2C=m
-CONFIG_TOUCHSCREEN_MAX11801=m
-CONFIG_TOUCHSCREEN_MCS5000=m
-CONFIG_TOUCHSCREEN_MMS114=m
-# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
-CONFIG_TOUCHSCREEN_MTOUCH=m
-CONFIG_TOUCHSCREEN_INEXIO=m
-CONFIG_TOUCHSCREEN_MK712=m
-CONFIG_TOUCHSCREEN_PENMOUNT=m
-CONFIG_TOUCHSCREEN_EDT_FT5X06=m
-CONFIG_TOUCHSCREEN_TOUCHRIGHT=m
-CONFIG_TOUCHSCREEN_TOUCHWIN=m
-CONFIG_TOUCHSCREEN_TI_AM335X_TSC=m
-CONFIG_TOUCHSCREEN_UCB1400=m
-CONFIG_TOUCHSCREEN_PIXCIR=m
-# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
-CONFIG_TOUCHSCREEN_WM97XX=m
-CONFIG_TOUCHSCREEN_WM9705=y
-CONFIG_TOUCHSCREEN_WM9712=y
-CONFIG_TOUCHSCREEN_WM9713=y
-CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
-CONFIG_TOUCHSCREEN_USB_EGALAX=y
-CONFIG_TOUCHSCREEN_USB_PANJIT=y
-CONFIG_TOUCHSCREEN_USB_3M=y
-CONFIG_TOUCHSCREEN_USB_ITM=y
-CONFIG_TOUCHSCREEN_USB_ETURBO=y
-CONFIG_TOUCHSCREEN_USB_GUNZE=y
-CONFIG_TOUCHSCREEN_USB_DMC_TSC10=y
-CONFIG_TOUCHSCREEN_USB_IRTOUCH=y
-CONFIG_TOUCHSCREEN_USB_IDEALTEK=y
-CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH=y
-CONFIG_TOUCHSCREEN_USB_GOTOP=y
-CONFIG_TOUCHSCREEN_USB_JASTEC=y
-CONFIG_TOUCHSCREEN_USB_ELO=y
-CONFIG_TOUCHSCREEN_USB_E2I=y
-CONFIG_TOUCHSCREEN_USB_ZYTRONIC=y
-CONFIG_TOUCHSCREEN_USB_ETT_TC45USB=y
-CONFIG_TOUCHSCREEN_USB_NEXIO=y
-CONFIG_TOUCHSCREEN_USB_EASYTOUCH=y
-CONFIG_TOUCHSCREEN_TOUCHIT213=m
-CONFIG_TOUCHSCREEN_TSC_SERIO=m
-CONFIG_TOUCHSCREEN_TSC200X_CORE=m
-CONFIG_TOUCHSCREEN_TSC2004=m
-CONFIG_TOUCHSCREEN_TSC2007=m
-CONFIG_TOUCHSCREEN_RM_TS=m
-CONFIG_TOUCHSCREEN_SILEAD=m
-CONFIG_TOUCHSCREEN_SIS_I2C=m
-CONFIG_TOUCHSCREEN_ST1232=m
-# CONFIG_TOUCHSCREEN_STMFTS is not set
-CONFIG_TOUCHSCREEN_SUR40=m
-CONFIG_TOUCHSCREEN_SX8654=m
-CONFIG_TOUCHSCREEN_TPS6507X=m
-# CONFIG_TOUCHSCREEN_ZET6223 is not set
-CONFIG_TOUCHSCREEN_ZFORCE=m
-CONFIG_TOUCHSCREEN_ROHM_BU21023=m
-CONFIG_INPUT_MISC=y
-# CONFIG_INPUT_AD714X is not set
-# CONFIG_INPUT_BMA150 is not set
-CONFIG_INPUT_E3X0_BUTTON=m
-CONFIG_INPUT_PCSPKR=m
-CONFIG_INPUT_MMA8450=m
-CONFIG_INPUT_APANEL=m
-CONFIG_INPUT_GP2A=m
-CONFIG_INPUT_GPIO_BEEPER=m
-CONFIG_INPUT_GPIO_DECODER=m
-CONFIG_INPUT_ATLAS_BTNS=m
-CONFIG_INPUT_ATI_REMOTE2=m
-CONFIG_INPUT_KEYSPAN_REMOTE=m
-CONFIG_INPUT_KXTJ9=m
-# CONFIG_INPUT_KXTJ9_POLLED_MODE is not set
-CONFIG_INPUT_POWERMATE=m
-CONFIG_INPUT_YEALINK=m
-CONFIG_INPUT_CM109=m
-CONFIG_INPUT_RETU_PWRBUTTON=m
-CONFIG_INPUT_UINPUT=m
-# CONFIG_INPUT_PCF8574 is not set
-CONFIG_INPUT_PWM_BEEPER=m
-# CONFIG_INPUT_PWM_VIBRA is not set
-CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
-# CONFIG_INPUT_ADXL34X is not set
-CONFIG_INPUT_IMS_PCU=m
-CONFIG_INPUT_CMA3000=m
-CONFIG_INPUT_CMA3000_I2C=m
-CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
-CONFIG_INPUT_IDEAPAD_SLIDEBAR=m
-CONFIG_INPUT_SOC_BUTTON_ARRAY=m
-CONFIG_INPUT_DRV260X_HAPTICS=m
-# CONFIG_INPUT_DRV2665_HAPTICS is not set
-# CONFIG_INPUT_DRV2667_HAPTICS is not set
-CONFIG_RMI4_CORE=m
-# CONFIG_RMI4_I2C is not set
-# CONFIG_RMI4_SMB is not set
-CONFIG_RMI4_F03=y
-CONFIG_RMI4_F03_SERIO=m
-CONFIG_RMI4_2D_SENSOR=y
-CONFIG_RMI4_F11=y
-CONFIG_RMI4_F12=y
-CONFIG_RMI4_F30=y
-# CONFIG_RMI4_F34 is not set
-# CONFIG_RMI4_F54 is not set
-# CONFIG_RMI4_F55 is not set
-
-#
-# Hardware I/O ports
-#
-CONFIG_SERIO=y
-CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
-CONFIG_SERIO_I8042=y
-CONFIG_SERIO_SERPORT=y
-CONFIG_SERIO_CT82C710=m
-CONFIG_SERIO_PARKBD=m
-CONFIG_SERIO_PCIPS2=m
-CONFIG_SERIO_LIBPS2=y
-CONFIG_SERIO_RAW=m
-CONFIG_SERIO_ALTERA_PS2=m
-CONFIG_SERIO_PS2MULT=m
-CONFIG_SERIO_ARC_PS2=m
-CONFIG_HYPERV_KEYBOARD=m
-# CONFIG_SERIO_GPIO_PS2 is not set
-CONFIG_USERIO=m
-CONFIG_GAMEPORT=m
-CONFIG_GAMEPORT_NS558=m
-CONFIG_GAMEPORT_L4=m
-CONFIG_GAMEPORT_EMU10K1=m
-CONFIG_GAMEPORT_FM801=m
-
-#
-# Character devices
-#
-CONFIG_TTY=y
-CONFIG_VT=y
-CONFIG_CONSOLE_TRANSLATIONS=y
-CONFIG_VT_CONSOLE=y
-CONFIG_VT_CONSOLE_SLEEP=y
-CONFIG_HW_CONSOLE=y
-CONFIG_VT_HW_CONSOLE_BINDING=y
-CONFIG_UNIX98_PTYS=y
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_ROCKETPORT=m
-CONFIG_CYCLADES=m
-# CONFIG_CYZ_INTR is not set
-# CONFIG_MOXA_INTELLIO is not set
-# CONFIG_MOXA_SMARTIO is not set
-CONFIG_SYNCLINK=m
-CONFIG_SYNCLINKMP=m
-CONFIG_SYNCLINK_GT=m
-CONFIG_NOZOMI=m
-# CONFIG_ISI is not set
-CONFIG_N_HDLC=m
-CONFIG_N_GSM=m
-# CONFIG_TRACE_SINK is not set
-CONFIG_LDISC_AUTOLOAD=y
-CONFIG_DEVMEM=y
-# CONFIG_DEVKMEM is not set
-
-#
-# Serial drivers
-#
-CONFIG_SERIAL_EARLYCON=y
-CONFIG_SERIAL_8250=y
-# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
-CONFIG_SERIAL_8250_PNP=y
-# CONFIG_SERIAL_8250_FINTEK is not set
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_8250_DMA=y
-CONFIG_SERIAL_8250_PCI=y
-CONFIG_SERIAL_8250_EXAR=y
-CONFIG_SERIAL_8250_CS=m
-CONFIG_SERIAL_8250_NR_UARTS=32
-CONFIG_SERIAL_8250_RUNTIME_UARTS=4
-CONFIG_SERIAL_8250_EXTENDED=y
-CONFIG_SERIAL_8250_MANY_PORTS=y
-CONFIG_SERIAL_8250_SHARE_IRQ=y
-# CONFIG_SERIAL_8250_DETECT_IRQ is not set
-CONFIG_SERIAL_8250_RSA=y
-CONFIG_SERIAL_8250_DW=m
-# CONFIG_SERIAL_8250_RT288X is not set
-CONFIG_SERIAL_8250_LPSS=y
-CONFIG_SERIAL_8250_MID=y
-# CONFIG_SERIAL_8250_MOXA is not set
-
-#
-# Non-8250 serial port support
-#
-CONFIG_SERIAL_UARTLITE=m
-CONFIG_SERIAL_UARTLITE_NR_UARTS=1
-CONFIG_SERIAL_CORE=y
-CONFIG_SERIAL_CORE_CONSOLE=y
-CONFIG_SERIAL_JSM=m
-CONFIG_SERIAL_SCCNXP=m
-CONFIG_SERIAL_SC16IS7XX_CORE=m
-CONFIG_SERIAL_SC16IS7XX=m
-CONFIG_SERIAL_SC16IS7XX_I2C=y
-CONFIG_SERIAL_ALTERA_JTAGUART=m
-CONFIG_SERIAL_ALTERA_UART=m
-CONFIG_SERIAL_ALTERA_UART_MAXPORTS=4
-CONFIG_SERIAL_ALTERA_UART_BAUDRATE=115200
-CONFIG_SERIAL_ARC=m
-CONFIG_SERIAL_ARC_NR_PORTS=1
-CONFIG_SERIAL_RP2=m
-CONFIG_SERIAL_RP2_NR_UARTS=32
-CONFIG_SERIAL_FSL_LPUART=m
-# CONFIG_SERIAL_DEV_BUS is not set
-CONFIG_PRINTER=m
-CONFIG_LP_CONSOLE=y
-CONFIG_PPDEV=m
-CONFIG_HVC_DRIVER=y
-CONFIG_HVC_IRQ=y
-CONFIG_HVC_XEN=y
-CONFIG_HVC_XEN_FRONTEND=y
-CONFIG_VIRTIO_CONSOLE=y
-CONFIG_IPMI_HANDLER=m
-CONFIG_IPMI_DMI_DECODE=y
-# CONFIG_IPMI_PANIC_EVENT is not set
-CONFIG_IPMI_DEVICE_INTERFACE=m
-CONFIG_IPMI_SI=m
-# CONFIG_IPMI_SSIF is not set
-CONFIG_IPMI_WATCHDOG=m
-CONFIG_IPMI_POWEROFF=m
-CONFIG_HW_RANDOM=y
-CONFIG_HW_RANDOM_TIMERIOMEM=m
-CONFIG_HW_RANDOM_INTEL=m
-CONFIG_HW_RANDOM_AMD=m
-CONFIG_HW_RANDOM_VIA=m
-CONFIG_HW_RANDOM_VIRTIO=m
-CONFIG_NVRAM=y
-# CONFIG_APPLICOM is not set
-
-#
-# PCMCIA character devices
-#
-# CONFIG_SYNCLINK_CS is not set
-CONFIG_CARDMAN_4000=m
-CONFIG_CARDMAN_4040=m
-# CONFIG_SCR24X is not set
-CONFIG_IPWIRELESS=m
-CONFIG_MWAVE=m
-CONFIG_RAW_DRIVER=y
-CONFIG_MAX_RAW_DEVS=8192
-CONFIG_HPET=y
-# CONFIG_HPET_MMAP is not set
-CONFIG_HANGCHECK_TIMER=m
-CONFIG_TCG_TPM=m
-CONFIG_HW_RANDOM_TPM=y
-CONFIG_TCG_TIS_CORE=m
-CONFIG_TCG_TIS=m
-CONFIG_TCG_TIS_I2C_ATMEL=m
-CONFIG_TCG_TIS_I2C_INFINEON=m
-CONFIG_TCG_TIS_I2C_NUVOTON=m
-CONFIG_TCG_NSC=m
-CONFIG_TCG_ATMEL=m
-CONFIG_TCG_INFINEON=m
-CONFIG_TCG_XEN=m
-CONFIG_TCG_CRB=m
-CONFIG_TCG_VTPM_PROXY=m
-CONFIG_TCG_TIS_ST33ZP24=m
-CONFIG_TCG_TIS_ST33ZP24_I2C=m
-CONFIG_TELCLOCK=m
-CONFIG_DEVPORT=y
-CONFIG_XILLYBUS=m
-# CONFIG_XILLYBUS_PCIE is not set
-# CONFIG_RANDOM_TRUST_CPU is not set
-
-#
-# I2C support
-#
-CONFIG_I2C=m
-CONFIG_I2C_BOARDINFO=y
-CONFIG_I2C_COMPAT=y
-CONFIG_I2C_CHARDEV=m
-CONFIG_I2C_MUX=m
-
-#
-# Multiplexer I2C Chip support
-#
-CONFIG_I2C_MUX_GPIO=m
-# CONFIG_I2C_MUX_LTC4306 is not set
-CONFIG_I2C_MUX_PCA9541=m
-CONFIG_I2C_MUX_PCA954x=m
-CONFIG_I2C_MUX_REG=m
-# CONFIG_I2C_MUX_MLXCPLD is not set
-CONFIG_I2C_HELPER_AUTO=y
-CONFIG_I2C_SMBUS=m
-CONFIG_I2C_ALGOBIT=m
-CONFIG_I2C_ALGOPCA=m
-
-#
-# I2C Hardware Bus support
-#
-
-#
-# PC SMBus host controller drivers
-#
-# CONFIG_I2C_ALI1535 is not set
-# CONFIG_I2C_ALI1563 is not set
-# CONFIG_I2C_ALI15X3 is not set
-CONFIG_I2C_AMD756=m
-CONFIG_I2C_AMD756_S4882=m
-CONFIG_I2C_AMD8111=m
-CONFIG_I2C_I801=m
-CONFIG_I2C_ISCH=m
-CONFIG_I2C_ISMT=m
-CONFIG_I2C_PIIX4=m
-CONFIG_I2C_NFORCE2=m
-CONFIG_I2C_NFORCE2_S4985=m
-# CONFIG_I2C_SIS5595 is not set
-# CONFIG_I2C_SIS630 is not set
-CONFIG_I2C_SIS96X=m
-CONFIG_I2C_VIA=m
-CONFIG_I2C_VIAPRO=m
-
-#
-# ACPI drivers
-#
-CONFIG_I2C_SCMI=m
-
-#
-# I2C system bus drivers (mostly embedded / system-on-chip)
-#
-CONFIG_I2C_CBUS_GPIO=m
-CONFIG_I2C_DESIGNWARE_CORE=m
-CONFIG_I2C_DESIGNWARE_PLATFORM=m
-# CONFIG_I2C_DESIGNWARE_SLAVE is not set
-# CONFIG_I2C_DESIGNWARE_PCI is not set
-# CONFIG_I2C_DESIGNWARE_BAYTRAIL is not set
-CONFIG_I2C_EMEV2=m
-CONFIG_I2C_GPIO=m
-# CONFIG_I2C_GPIO_FAULT_INJECTOR is not set
-# CONFIG_I2C_OCORES is not set
-CONFIG_I2C_PCA_PLATFORM=m
-CONFIG_I2C_SIMTEC=m
-# CONFIG_I2C_XILINX is not set
-
-#
-# External I2C/SMBus adapter drivers
-#
-CONFIG_I2C_DIOLAN_U2C=m
-CONFIG_I2C_PARPORT=m
-CONFIG_I2C_PARPORT_LIGHT=m
-CONFIG_I2C_ROBOTFUZZ_OSIF=m
-# CONFIG_I2C_TAOS_EVM is not set
-CONFIG_I2C_TINY_USB=m
-CONFIG_I2C_VIPERBOARD=m
-
-#
-# Other I2C/SMBus bus drivers
-#
-# CONFIG_I2C_MLXCPLD is not set
-CONFIG_I2C_CROS_EC_TUNNEL=m
-CONFIG_I2C_STUB=m
-CONFIG_I2C_SLAVE=y
-# CONFIG_I2C_SLAVE_EEPROM is not set
-# CONFIG_I2C_DEBUG_CORE is not set
-# CONFIG_I2C_DEBUG_ALGO is not set
-# CONFIG_I2C_DEBUG_BUS is not set
-# CONFIG_SPI is not set
-CONFIG_SPMI=m
-# CONFIG_HSI is not set
-CONFIG_PPS=y
-# CONFIG_PPS_DEBUG is not set
-
-#
-# PPS clients support
-#
-# CONFIG_PPS_CLIENT_KTIMER is not set
-CONFIG_PPS_CLIENT_LDISC=m
-CONFIG_PPS_CLIENT_PARPORT=m
-CONFIG_PPS_CLIENT_GPIO=m
-
-#
-# PPS generators support
-#
-
-#
-# PTP clock support
-#
-CONFIG_PTP_1588_CLOCK=y
-CONFIG_DP83640_PHY=m
-CONFIG_PTP_1588_CLOCK_KVM=m
-CONFIG_PINCTRL=y
-CONFIG_PINMUX=y
-CONFIG_PINCONF=y
-CONFIG_GENERIC_PINCONF=y
-CONFIG_PINCTRL_AMD=y
-# CONFIG_PINCTRL_MCP23S08 is not set
-CONFIG_PINCTRL_BAYTRAIL=y
-CONFIG_PINCTRL_CHERRYVIEW=m
-CONFIG_PINCTRL_INTEL=m
-CONFIG_PINCTRL_BROXTON=m
-# CONFIG_PINCTRL_CANNONLAKE is not set
-# CONFIG_PINCTRL_CEDARFORK is not set
-# CONFIG_PINCTRL_DENVERTON is not set
-# CONFIG_PINCTRL_GEMINILAKE is not set
-# CONFIG_PINCTRL_ICELAKE is not set
-# CONFIG_PINCTRL_LEWISBURG is not set
-CONFIG_PINCTRL_SUNRISEPOINT=m
-CONFIG_GPIOLIB=y
-CONFIG_GPIOLIB_FASTPATH_LIMIT=512
-CONFIG_GPIO_ACPI=y
-CONFIG_GPIOLIB_IRQCHIP=y
-CONFIG_GPIO_SYSFS=y
-CONFIG_GPIO_GENERIC=y
-CONFIG_GPIO_MAX730X=m
-
-#
-# Memory mapped GPIO drivers
-#
-CONFIG_GPIO_AMDPT=m
-CONFIG_GPIO_DWAPB=m
-# CONFIG_GPIO_EXAR is not set
-CONFIG_GPIO_GENERIC_PLATFORM=y
-CONFIG_GPIO_ICH=m
-CONFIG_GPIO_LYNXPOINT=m
-# CONFIG_GPIO_MB86S7X is not set
-CONFIG_GPIO_MOCKUP=m
-CONFIG_GPIO_VX855=m
-
-#
-# Port-mapped I/O GPIO drivers
-#
-CONFIG_GPIO_F7188X=m
-CONFIG_GPIO_IT87=m
-CONFIG_GPIO_SCH=m
-CONFIG_GPIO_SCH311X=m
-# CONFIG_GPIO_WINBOND is not set
-# CONFIG_GPIO_WS16C48 is not set
-
-#
-# I2C GPIO expanders
-#
-CONFIG_GPIO_ADP5588=m
-CONFIG_GPIO_MAX7300=m
-CONFIG_GPIO_MAX732X=m
-CONFIG_GPIO_PCA953X=m
-CONFIG_GPIO_PCF857X=m
-# CONFIG_GPIO_TPIC2810 is not set
-
-#
-# MFD GPIO expanders
-#
-CONFIG_GPIO_LP3943=m
-CONFIG_GPIO_LP873X=m
-CONFIG_GPIO_UCB1400=m
-
-#
-# PCI GPIO expanders
-#
-CONFIG_GPIO_AMD8111=m
-CONFIG_GPIO_ML_IOH=m
-# CONFIG_GPIO_PCI_IDIO_16 is not set
-# CONFIG_GPIO_PCIE_IDIO_24 is not set
-CONFIG_GPIO_RDC321X=m
-
-#
-# USB GPIO expanders
-#
-CONFIG_GPIO_VIPERBOARD=m
-CONFIG_W1=m
-CONFIG_W1_CON=y
-
-#
-# 1-wire Bus Masters
-#
-# CONFIG_W1_MASTER_MATROX is not set
-CONFIG_W1_MASTER_DS2490=m
-CONFIG_W1_MASTER_DS2482=m
-CONFIG_W1_MASTER_DS1WM=m
-CONFIG_W1_MASTER_GPIO=m
-
-#
-# 1-wire Slaves
-#
-CONFIG_W1_SLAVE_THERM=m
-CONFIG_W1_SLAVE_SMEM=m
-# CONFIG_W1_SLAVE_DS2405 is not set
-CONFIG_W1_SLAVE_DS2408=m
-CONFIG_W1_SLAVE_DS2408_READBACK=y
-CONFIG_W1_SLAVE_DS2413=m
-CONFIG_W1_SLAVE_DS2406=m
-CONFIG_W1_SLAVE_DS2423=m
-# CONFIG_W1_SLAVE_DS2805 is not set
-CONFIG_W1_SLAVE_DS2431=m
-CONFIG_W1_SLAVE_DS2433=m
-CONFIG_W1_SLAVE_DS2433_CRC=y
-# CONFIG_W1_SLAVE_DS2438 is not set
-CONFIG_W1_SLAVE_DS2780=m
-CONFIG_W1_SLAVE_DS2781=m
-CONFIG_W1_SLAVE_DS28E04=m
-# CONFIG_W1_SLAVE_DS28E17 is not set
-CONFIG_POWER_AVS=y
-# CONFIG_POWER_RESET is not set
-CONFIG_POWER_SUPPLY=y
-# CONFIG_POWER_SUPPLY_DEBUG is not set
-# CONFIG_PDA_POWER is not set
-# CONFIG_TEST_POWER is not set
-# CONFIG_CHARGER_ADP5061 is not set
-# CONFIG_BATTERY_DS2760 is not set
-# CONFIG_BATTERY_DS2780 is not set
-# CONFIG_BATTERY_DS2781 is not set
-# CONFIG_BATTERY_DS2782 is not set
-# CONFIG_BATTERY_SBS is not set
-# CONFIG_CHARGER_SBS is not set
-# CONFIG_MANAGER_SBS is not set
-CONFIG_BATTERY_BQ27XXX=m
-CONFIG_BATTERY_BQ27XXX_I2C=m
-CONFIG_BATTERY_BQ27XXX_HDQ=m
-# CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM is not set
-# CONFIG_BATTERY_MAX17040 is not set
-# CONFIG_BATTERY_MAX17042 is not set
-# CONFIG_BATTERY_MAX1721X is not set
-# CONFIG_CHARGER_ISP1704 is not set
-# CONFIG_CHARGER_MAX8903 is not set
-# CONFIG_CHARGER_LP8727 is not set
-CONFIG_CHARGER_GPIO=m
-# CONFIG_CHARGER_LTC3651 is not set
-CONFIG_CHARGER_MAX14577=m
-CONFIG_CHARGER_BQ2415X=m
-CONFIG_CHARGER_BQ24190=m
-# CONFIG_CHARGER_BQ24257 is not set
-CONFIG_CHARGER_BQ24735=m
-# CONFIG_CHARGER_BQ25890 is not set
-CONFIG_CHARGER_SMB347=m
-CONFIG_BATTERY_GAUGE_LTC2941=m
-# CONFIG_CHARGER_RT9455 is not set
-# CONFIG_CHARGER_CROS_USBPD is not set
-CONFIG_HWMON=y
-CONFIG_HWMON_VID=m
-# CONFIG_HWMON_DEBUG_CHIP is not set
-
-#
-# Native drivers
-#
-CONFIG_SENSORS_ABITUGURU=m
-CONFIG_SENSORS_ABITUGURU3=m
-CONFIG_SENSORS_AD7414=m
-CONFIG_SENSORS_AD7418=m
-CONFIG_SENSORS_ADM1021=m
-CONFIG_SENSORS_ADM1025=m
-CONFIG_SENSORS_ADM1026=m
-CONFIG_SENSORS_ADM1029=m
-CONFIG_SENSORS_ADM1031=m
-CONFIG_SENSORS_ADM9240=m
-CONFIG_SENSORS_ADT7X10=m
-CONFIG_SENSORS_ADT7410=m
-CONFIG_SENSORS_ADT7411=m
-CONFIG_SENSORS_ADT7462=m
-CONFIG_SENSORS_ADT7470=m
-CONFIG_SENSORS_ADT7475=m
-CONFIG_SENSORS_ASC7621=m
-CONFIG_SENSORS_K8TEMP=m
-CONFIG_SENSORS_K10TEMP=m
-CONFIG_SENSORS_FAM15H_POWER=m
-CONFIG_SENSORS_APPLESMC=m
-CONFIG_SENSORS_ASB100=m
-# CONFIG_SENSORS_ASPEED is not set
-CONFIG_SENSORS_ATXP1=m
-CONFIG_SENSORS_DS620=m
-CONFIG_SENSORS_DS1621=m
-CONFIG_SENSORS_DELL_SMM=m
-CONFIG_SENSORS_I5K_AMB=m
-CONFIG_SENSORS_F71805F=m
-CONFIG_SENSORS_F71882FG=m
-CONFIG_SENSORS_F75375S=m
-CONFIG_SENSORS_FSCHMD=m
-CONFIG_SENSORS_FTSTEUTATES=m
-CONFIG_SENSORS_GL518SM=m
-CONFIG_SENSORS_GL520SM=m
-CONFIG_SENSORS_G760A=m
-CONFIG_SENSORS_G762=m
-CONFIG_SENSORS_HIH6130=m
-CONFIG_SENSORS_IBMAEM=m
-CONFIG_SENSORS_IBMPEX=m
-# CONFIG_SENSORS_I5500 is not set
-CONFIG_SENSORS_CORETEMP=m
-CONFIG_SENSORS_IT87=m
-# CONFIG_SENSORS_JC42 is not set
-CONFIG_SENSORS_POWR1220=m
-CONFIG_SENSORS_LINEAGE=m
-CONFIG_SENSORS_LTC2945=m
-# CONFIG_SENSORS_LTC2990 is not set
-CONFIG_SENSORS_LTC4151=m
-CONFIG_SENSORS_LTC4215=m
-CONFIG_SENSORS_LTC4222=m
-CONFIG_SENSORS_LTC4245=m
-CONFIG_SENSORS_LTC4260=m
-CONFIG_SENSORS_LTC4261=m
-CONFIG_SENSORS_MAX16065=m
-CONFIG_SENSORS_MAX1619=m
-CONFIG_SENSORS_MAX1668=m
-CONFIG_SENSORS_MAX197=m
-# CONFIG_SENSORS_MAX6621 is not set
-CONFIG_SENSORS_MAX6639=m
-CONFIG_SENSORS_MAX6642=m
-CONFIG_SENSORS_MAX6650=m
-CONFIG_SENSORS_MAX6697=m
-CONFIG_SENSORS_MAX31790=m
-CONFIG_SENSORS_MCP3021=m
-# CONFIG_SENSORS_TC654 is not set
-CONFIG_SENSORS_LM63=m
-CONFIG_SENSORS_LM73=m
-CONFIG_SENSORS_LM75=m
-CONFIG_SENSORS_LM77=m
-CONFIG_SENSORS_LM78=m
-CONFIG_SENSORS_LM80=m
-CONFIG_SENSORS_LM83=m
-CONFIG_SENSORS_LM85=m
-CONFIG_SENSORS_LM87=m
-CONFIG_SENSORS_LM90=m
-CONFIG_SENSORS_LM92=m
-CONFIG_SENSORS_LM93=m
-CONFIG_SENSORS_LM95234=m
-CONFIG_SENSORS_LM95241=m
-CONFIG_SENSORS_LM95245=m
-CONFIG_SENSORS_PC87360=m
-CONFIG_SENSORS_PC87427=m
-CONFIG_SENSORS_NTC_THERMISTOR=m
-CONFIG_SENSORS_NCT6683=m
-CONFIG_SENSORS_NCT6775=m
-# CONFIG_SENSORS_NCT7802 is not set
-CONFIG_SENSORS_NCT7904=m
-# CONFIG_SENSORS_NPCM7XX is not set
-CONFIG_SENSORS_PCF8591=m
-CONFIG_PMBUS=m
-CONFIG_SENSORS_PMBUS=m
-CONFIG_SENSORS_ADM1275=m
-# CONFIG_SENSORS_IBM_CFFPS is not set
-# CONFIG_SENSORS_IR35221 is not set
-CONFIG_SENSORS_LM25066=m
-CONFIG_SENSORS_LTC2978=m
-# CONFIG_SENSORS_LTC3815 is not set
-CONFIG_SENSORS_MAX16064=m
-CONFIG_SENSORS_MAX20751=m
-# CONFIG_SENSORS_MAX31785 is not set
-CONFIG_SENSORS_MAX34440=m
-CONFIG_SENSORS_MAX8688=m
-CONFIG_SENSORS_TPS40422=m
-# CONFIG_SENSORS_TPS53679 is not set
-CONFIG_SENSORS_UCD9000=m
-CONFIG_SENSORS_UCD9200=m
-CONFIG_SENSORS_ZL6100=m
-CONFIG_SENSORS_SHT15=m
-CONFIG_SENSORS_SHT21=m
-CONFIG_SENSORS_SHT3x=m
-CONFIG_SENSORS_SHTC1=m
-CONFIG_SENSORS_SIS5595=m
-CONFIG_SENSORS_DME1737=m
-CONFIG_SENSORS_EMC1403=m
-# CONFIG_SENSORS_EMC2103 is not set
-CONFIG_SENSORS_EMC6W201=m
-CONFIG_SENSORS_SMSC47M1=m
-CONFIG_SENSORS_SMSC47M192=m
-CONFIG_SENSORS_SMSC47B397=m
-CONFIG_SENSORS_SCH56XX_COMMON=m
-CONFIG_SENSORS_SCH5627=m
-CONFIG_SENSORS_SCH5636=m
-# CONFIG_SENSORS_STTS751 is not set
-# CONFIG_SENSORS_SMM665 is not set
-CONFIG_SENSORS_ADC128D818=m
-CONFIG_SENSORS_ADS1015=m
-CONFIG_SENSORS_ADS7828=m
-CONFIG_SENSORS_AMC6821=m
-CONFIG_SENSORS_INA209=m
-CONFIG_SENSORS_INA2XX=m
-CONFIG_SENSORS_INA3221=m
-# CONFIG_SENSORS_TC74 is not set
-CONFIG_SENSORS_THMC50=m
-CONFIG_SENSORS_TMP102=m
-CONFIG_SENSORS_TMP103=m
-# CONFIG_SENSORS_TMP108 is not set
-CONFIG_SENSORS_TMP401=m
-CONFIG_SENSORS_TMP421=m
-CONFIG_SENSORS_VIA_CPUTEMP=m
-CONFIG_SENSORS_VIA686A=m
-CONFIG_SENSORS_VT1211=m
-CONFIG_SENSORS_VT8231=m
-# CONFIG_SENSORS_W83773G is not set
-CONFIG_SENSORS_W83781D=m
-CONFIG_SENSORS_W83791D=m
-CONFIG_SENSORS_W83792D=m
-CONFIG_SENSORS_W83793=m
-CONFIG_SENSORS_W83795=m
-# CONFIG_SENSORS_W83795_FANCTRL is not set
-CONFIG_SENSORS_W83L785TS=m
-CONFIG_SENSORS_W83L786NG=m
-CONFIG_SENSORS_W83627HF=m
-CONFIG_SENSORS_W83627EHF=m
-# CONFIG_SENSORS_XGENE is not set
-
-#
-# ACPI drivers
-#
-CONFIG_SENSORS_ACPI_POWER=m
-CONFIG_SENSORS_ATK0110=m
-CONFIG_THERMAL=y
-# CONFIG_THERMAL_STATISTICS is not set
-CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
-CONFIG_THERMAL_HWMON=y
-CONFIG_THERMAL_WRITABLE_TRIPS=y
-CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
-# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
-# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
-# CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set
-CONFIG_THERMAL_GOV_FAIR_SHARE=y
-CONFIG_THERMAL_GOV_STEP_WISE=y
-CONFIG_THERMAL_GOV_BANG_BANG=y
-CONFIG_THERMAL_GOV_USER_SPACE=y
-# CONFIG_THERMAL_GOV_POWER_ALLOCATOR is not set
-# CONFIG_CLOCK_THERMAL is not set
-# CONFIG_DEVFREQ_THERMAL is not set
-# CONFIG_THERMAL_EMULATION is not set
-# CONFIG_INTEL_POWERCLAMP is not set
-CONFIG_X86_PKG_TEMP_THERMAL=m
-CONFIG_INTEL_SOC_DTS_IOSF_CORE=m
-CONFIG_INTEL_SOC_DTS_THERMAL=m
-
-#
-# ACPI INT340X thermal drivers
-#
-# CONFIG_INT340X_THERMAL is not set
-CONFIG_INTEL_PCH_THERMAL=m
-CONFIG_WATCHDOG=y
-CONFIG_WATCHDOG_CORE=y
-# CONFIG_WATCHDOG_NOWAYOUT is not set
-CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
-# CONFIG_WATCHDOG_SYSFS is not set
-
-#
-# Watchdog Device Drivers
-#
-CONFIG_SOFT_WATCHDOG=m
-# CONFIG_SOFT_WATCHDOG_PRETIMEOUT is not set
-CONFIG_WDAT_WDT=m
-# CONFIG_XILINX_WATCHDOG is not set
-# CONFIG_ZIIRAVE_WATCHDOG is not set
-CONFIG_CADENCE_WATCHDOG=m
-CONFIG_DW_WATCHDOG=m
-# CONFIG_MAX63XX_WATCHDOG is not set
-CONFIG_RETU_WATCHDOG=m
-# CONFIG_ACQUIRE_WDT is not set
-# CONFIG_ADVANTECH_WDT is not set
-CONFIG_ALIM1535_WDT=m
-CONFIG_ALIM7101_WDT=m
-# CONFIG_EBC_C384_WDT is not set
-CONFIG_F71808E_WDT=m
-# CONFIG_SP5100_TCO is not set
-CONFIG_SBC_FITPC2_WATCHDOG=m
-# CONFIG_EUROTECH_WDT is not set
-CONFIG_IB700_WDT=m
-CONFIG_IBMASR=m
-# CONFIG_WAFER_WDT is not set
-CONFIG_I6300ESB_WDT=m
-CONFIG_IE6XX_WDT=m
-CONFIG_ITCO_WDT=m
-CONFIG_ITCO_VENDOR_SUPPORT=y
-CONFIG_IT8712F_WDT=m
-CONFIG_IT87_WDT=m
-CONFIG_HP_WATCHDOG=m
-CONFIG_HPWDT_NMI_DECODING=y
-# CONFIG_SC1200_WDT is not set
-# CONFIG_PC87413_WDT is not set
-CONFIG_NV_TCO=m
-# CONFIG_60XX_WDT is not set
-# CONFIG_CPU5_WDT is not set
-CONFIG_SMSC_SCH311X_WDT=m
-# CONFIG_SMSC37B787_WDT is not set
-CONFIG_VIA_WDT=m
-CONFIG_W83627HF_WDT=m
-CONFIG_W83877F_WDT=m
-CONFIG_W83977F_WDT=m
-CONFIG_MACHZ_WDT=m
-# CONFIG_SBC_EPX_C3_WATCHDOG is not set
-# CONFIG_INTEL_MEI_WDT is not set
-# CONFIG_NI903X_WDT is not set
-# CONFIG_NIC7018_WDT is not set
-CONFIG_MEN_A21_WDT=m
-CONFIG_XEN_WDT=m
-
-#
-# PCI-based Watchdog Cards
-#
-CONFIG_PCIPCWATCHDOG=m
-CONFIG_WDTPCI=m
-
-#
-# USB-based Watchdog Cards
-#
-CONFIG_USBPCWATCHDOG=m
-
-#
-# Watchdog Pretimeout Governors
-#
-CONFIG_WATCHDOG_PRETIMEOUT_GOV=y
-# CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP is not set
-CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC=y
-CONFIG_WATCHDOG_PRETIMEOUT_GOV_NOOP=m
-CONFIG_WATCHDOG_PRETIMEOUT_GOV_PANIC=y
-CONFIG_SSB_POSSIBLE=y
-CONFIG_SSB=m
-CONFIG_SSB_SPROM=y
-CONFIG_SSB_BLOCKIO=y
-CONFIG_SSB_PCIHOST_POSSIBLE=y
-CONFIG_SSB_PCIHOST=y
-CONFIG_SSB_B43_PCI_BRIDGE=y
-CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
-CONFIG_SSB_PCMCIAHOST=y
-CONFIG_SSB_SDIOHOST_POSSIBLE=y
-CONFIG_SSB_SDIOHOST=y
-CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
-CONFIG_SSB_DRIVER_PCICORE=y
-CONFIG_SSB_DRIVER_GPIO=y
-CONFIG_BCMA_POSSIBLE=y
-CONFIG_BCMA=m
-CONFIG_BCMA_BLOCKIO=y
-CONFIG_BCMA_HOST_PCI_POSSIBLE=y
-CONFIG_BCMA_HOST_PCI=y
-# CONFIG_BCMA_HOST_SOC is not set
-CONFIG_BCMA_DRIVER_PCI=y
-CONFIG_BCMA_DRIVER_GMAC_CMN=y
-CONFIG_BCMA_DRIVER_GPIO=y
-# CONFIG_BCMA_DEBUG is not set
-
-#
-# Multifunction device drivers
-#
-CONFIG_MFD_CORE=m
-CONFIG_MFD_BCM590XX=m
-# CONFIG_MFD_BD9571MWV is not set
-# CONFIG_MFD_AXP20X_I2C is not set
-CONFIG_MFD_CROS_EC=m
-# CONFIG_MFD_CROS_EC_CHARDEV is not set
-# CONFIG_MFD_MADERA is not set
-# CONFIG_MFD_DA9062 is not set
-# CONFIG_MFD_DA9063 is not set
-# CONFIG_MFD_DA9150 is not set
-# CONFIG_MFD_DLN2 is not set
-# CONFIG_MFD_MC13XXX_I2C is not set
-# CONFIG_HTC_PASIC3 is not set
-CONFIG_MFD_INTEL_QUARK_I2C_GPIO=m
-CONFIG_LPC_ICH=m
-CONFIG_LPC_SCH=m
-# CONFIG_INTEL_SOC_PMIC_CHTDC_TI is not set
-CONFIG_MFD_INTEL_LPSS=m
-CONFIG_MFD_INTEL_LPSS_ACPI=m
-CONFIG_MFD_INTEL_LPSS_PCI=m
-# CONFIG_MFD_JANZ_CMODIO is not set
-# CONFIG_MFD_KEMPLD is not set
-# CONFIG_MFD_88PM800 is not set
-# CONFIG_MFD_88PM805 is not set
-CONFIG_MFD_MAX14577=m
-# CONFIG_MFD_MAX77693 is not set
-# CONFIG_MFD_MAX8907 is not set
-CONFIG_MFD_MT6397=m
-# CONFIG_MFD_MENF21BMC is not set
-CONFIG_MFD_VIPERBOARD=m
-CONFIG_MFD_RETU=m
-# CONFIG_MFD_PCF50633 is not set
-CONFIG_UCB1400_CORE=m
-CONFIG_MFD_RDC321X=m
-# CONFIG_MFD_RT5033 is not set
-CONFIG_MFD_SI476X_CORE=m
-CONFIG_MFD_SM501=m
-CONFIG_MFD_SM501_GPIO=y
-CONFIG_MFD_SKY81452=m
-# CONFIG_ABX500_CORE is not set
-CONFIG_MFD_SYSCON=y
-CONFIG_MFD_TI_AM335X_TSCADC=m
-CONFIG_MFD_LP3943=m
-# CONFIG_MFD_TI_LMU is not set
-# CONFIG_TPS6105X is not set
-CONFIG_TPS65010=m
-# CONFIG_TPS6507X is not set
-# CONFIG_MFD_TPS65086 is not set
-CONFIG_MFD_TI_LP873X=m
-# CONFIG_MFD_TPS65912_I2C is not set
-CONFIG_MFD_WL1273_CORE=m
-# CONFIG_MFD_LM3533 is not set
-CONFIG_MFD_VX855=m
-# CONFIG_MFD_ARIZONA_I2C is not set
-# CONFIG_MFD_WM8994 is not set
-# CONFIG_REGULATOR is not set
-CONFIG_RC_CORE=m
-CONFIG_RC_MAP=m
-# CONFIG_LIRC is not set
-CONFIG_RC_DECODERS=y
-CONFIG_IR_NEC_DECODER=m
-CONFIG_IR_RC5_DECODER=m
-CONFIG_IR_RC6_DECODER=m
-CONFIG_IR_JVC_DECODER=m
-CONFIG_IR_SONY_DECODER=m
-CONFIG_IR_SANYO_DECODER=m
-CONFIG_IR_SHARP_DECODER=m
-CONFIG_IR_MCE_KBD_DECODER=m
-CONFIG_IR_XMP_DECODER=m
-# CONFIG_IR_IMON_DECODER is not set
-CONFIG_RC_DEVICES=y
-CONFIG_RC_ATI_REMOTE=m
-CONFIG_IR_ENE=m
-CONFIG_IR_IMON=m
-# CONFIG_IR_IMON_RAW is not set
-CONFIG_IR_MCEUSB=m
-CONFIG_IR_ITE_CIR=m
-CONFIG_IR_FINTEK=m
-CONFIG_IR_NUVOTON=m
-CONFIG_IR_REDRAT3=m
-CONFIG_IR_STREAMZAP=m
-CONFIG_IR_WINBOND_CIR=m
-# CONFIG_IR_IGORPLUGUSB is not set
-CONFIG_IR_IGUANA=m
-CONFIG_IR_TTUSBIR=m
-CONFIG_RC_LOOPBACK=m
-# CONFIG_IR_SERIAL is not set
-# CONFIG_IR_SIR is not set
-CONFIG_MEDIA_SUPPORT=m
-
-#
-# Multimedia core support
-#
-CONFIG_MEDIA_CAMERA_SUPPORT=y
-CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
-CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
-CONFIG_MEDIA_RADIO_SUPPORT=y
-CONFIG_MEDIA_SDR_SUPPORT=y
-# CONFIG_MEDIA_CEC_SUPPORT is not set
-CONFIG_MEDIA_CONTROLLER=y
-# CONFIG_MEDIA_CONTROLLER_DVB is not set
-CONFIG_VIDEO_DEV=m
-CONFIG_VIDEO_V4L2_SUBDEV_API=y
-CONFIG_VIDEO_V4L2=m
-# CONFIG_VIDEO_ADV_DEBUG is not set
-# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
-CONFIG_VIDEO_PCI_SKELETON=m
-CONFIG_VIDEO_TUNER=m
-CONFIG_V4L2_MEM2MEM_DEV=m
-# CONFIG_V4L2_FLASH_LED_CLASS is not set
-CONFIG_V4L2_FWNODE=m
-CONFIG_VIDEOBUF_GEN=m
-CONFIG_VIDEOBUF_DMA_SG=m
-CONFIG_VIDEOBUF_VMALLOC=m
-CONFIG_DVB_CORE=m
-# CONFIG_DVB_MMAP is not set
-CONFIG_DVB_NET=y
-CONFIG_TTPCI_EEPROM=m
-CONFIG_DVB_MAX_ADAPTERS=8
-CONFIG_DVB_DYNAMIC_MINORS=y
-# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set
-# CONFIG_DVB_ULE_DEBUG is not set
-
-#
-# Media drivers
-#
-CONFIG_MEDIA_USB_SUPPORT=y
-
-#
-# Webcam devices
-#
-CONFIG_USB_VIDEO_CLASS=m
-CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
-CONFIG_USB_GSPCA=m
-CONFIG_USB_M5602=m
-CONFIG_USB_STV06XX=m
-CONFIG_USB_GL860=m
-CONFIG_USB_GSPCA_BENQ=m
-CONFIG_USB_GSPCA_CONEX=m
-CONFIG_USB_GSPCA_CPIA1=m
-CONFIG_USB_GSPCA_DTCS033=m
-CONFIG_USB_GSPCA_ETOMS=m
-CONFIG_USB_GSPCA_FINEPIX=m
-CONFIG_USB_GSPCA_JEILINJ=m
-CONFIG_USB_GSPCA_JL2005BCD=m
-CONFIG_USB_GSPCA_KINECT=m
-CONFIG_USB_GSPCA_KONICA=m
-CONFIG_USB_GSPCA_MARS=m
-CONFIG_USB_GSPCA_MR97310A=m
-CONFIG_USB_GSPCA_NW80X=m
-CONFIG_USB_GSPCA_OV519=m
-CONFIG_USB_GSPCA_OV534=m
-CONFIG_USB_GSPCA_OV534_9=m
-CONFIG_USB_GSPCA_PAC207=m
-CONFIG_USB_GSPCA_PAC7302=m
-CONFIG_USB_GSPCA_PAC7311=m
-CONFIG_USB_GSPCA_SE401=m
-CONFIG_USB_GSPCA_SN9C2028=m
-CONFIG_USB_GSPCA_SN9C20X=m
-CONFIG_USB_GSPCA_SONIXB=m
-CONFIG_USB_GSPCA_SONIXJ=m
-CONFIG_USB_GSPCA_SPCA500=m
-CONFIG_USB_GSPCA_SPCA501=m
-CONFIG_USB_GSPCA_SPCA505=m
-CONFIG_USB_GSPCA_SPCA506=m
-CONFIG_USB_GSPCA_SPCA508=m
-CONFIG_USB_GSPCA_SPCA561=m
-CONFIG_USB_GSPCA_SPCA1528=m
-CONFIG_USB_GSPCA_SQ905=m
-CONFIG_USB_GSPCA_SQ905C=m
-CONFIG_USB_GSPCA_SQ930X=m
-CONFIG_USB_GSPCA_STK014=m
-CONFIG_USB_GSPCA_STK1135=m
-CONFIG_USB_GSPCA_STV0680=m
-CONFIG_USB_GSPCA_SUNPLUS=m
-CONFIG_USB_GSPCA_T613=m
-CONFIG_USB_GSPCA_TOPRO=m
-CONFIG_USB_GSPCA_TOUPTEK=m
-CONFIG_USB_GSPCA_TV8532=m
-CONFIG_USB_GSPCA_VC032X=m
-CONFIG_USB_GSPCA_VICAM=m
-CONFIG_USB_GSPCA_XIRLINK_CIT=m
-CONFIG_USB_GSPCA_ZC3XX=m
-CONFIG_USB_PWC=m
-# CONFIG_USB_PWC_DEBUG is not set
-CONFIG_USB_PWC_INPUT_EVDEV=y
-CONFIG_VIDEO_CPIA2=m
-CONFIG_USB_ZR364XX=m
-CONFIG_USB_STKWEBCAM=m
-CONFIG_USB_S2255=m
-CONFIG_VIDEO_USBTV=m
-
-#
-# Analog TV USB devices
-#
-CONFIG_VIDEO_PVRUSB2=m
-CONFIG_VIDEO_PVRUSB2_SYSFS=y
-CONFIG_VIDEO_PVRUSB2_DVB=y
-# CONFIG_VIDEO_PVRUSB2_DEBUGIFC is not set
-CONFIG_VIDEO_HDPVR=m
-CONFIG_VIDEO_USBVISION=m
-CONFIG_VIDEO_STK1160_COMMON=m
-CONFIG_VIDEO_STK1160=m
-# CONFIG_VIDEO_GO7007 is not set
-
-#
-# Analog/digital TV USB devices
-#
-CONFIG_VIDEO_AU0828=m
-CONFIG_VIDEO_AU0828_V4L2=y
-CONFIG_VIDEO_AU0828_RC=y
-CONFIG_VIDEO_CX231XX=m
-CONFIG_VIDEO_CX231XX_RC=y
-CONFIG_VIDEO_CX231XX_ALSA=m
-CONFIG_VIDEO_CX231XX_DVB=m
-CONFIG_VIDEO_TM6000=m
-CONFIG_VIDEO_TM6000_ALSA=m
-CONFIG_VIDEO_TM6000_DVB=m
-
-#
-# Digital TV USB devices
-#
-CONFIG_DVB_USB=m
-# CONFIG_DVB_USB_DEBUG is not set
-CONFIG_DVB_USB_DIB3000MC=m
-CONFIG_DVB_USB_A800=m
-CONFIG_DVB_USB_DIBUSB_MB=m
-# CONFIG_DVB_USB_DIBUSB_MB_FAULTY is not set
-CONFIG_DVB_USB_DIBUSB_MC=m
-CONFIG_DVB_USB_DIB0700=m
-CONFIG_DVB_USB_UMT_010=m
-CONFIG_DVB_USB_CXUSB=m
-CONFIG_DVB_USB_M920X=m
-CONFIG_DVB_USB_DIGITV=m
-CONFIG_DVB_USB_VP7045=m
-CONFIG_DVB_USB_VP702X=m
-CONFIG_DVB_USB_GP8PSK=m
-CONFIG_DVB_USB_NOVA_T_USB2=m
-CONFIG_DVB_USB_TTUSB2=m
-CONFIG_DVB_USB_DTT200U=m
-CONFIG_DVB_USB_OPERA1=m
-CONFIG_DVB_USB_AF9005=m
-CONFIG_DVB_USB_AF9005_REMOTE=m
-CONFIG_DVB_USB_PCTV452E=m
-CONFIG_DVB_USB_DW2102=m
-CONFIG_DVB_USB_CINERGY_T2=m
-CONFIG_DVB_USB_DTV5100=m
-CONFIG_DVB_USB_AZ6027=m
-CONFIG_DVB_USB_TECHNISAT_USB2=m
-CONFIG_DVB_USB_V2=m
-CONFIG_DVB_USB_AF9015=m
-CONFIG_DVB_USB_AF9035=m
-CONFIG_DVB_USB_ANYSEE=m
-CONFIG_DVB_USB_AU6610=m
-CONFIG_DVB_USB_AZ6007=m
-CONFIG_DVB_USB_CE6230=m
-CONFIG_DVB_USB_EC168=m
-CONFIG_DVB_USB_GL861=m
-CONFIG_DVB_USB_LME2510=m
-CONFIG_DVB_USB_MXL111SF=m
-CONFIG_DVB_USB_RTL28XXU=m
-# CONFIG_DVB_USB_DVBSKY is not set
-# CONFIG_DVB_USB_ZD1301 is not set
-CONFIG_DVB_TTUSB_BUDGET=m
-CONFIG_DVB_TTUSB_DEC=m
-CONFIG_SMS_USB_DRV=m
-CONFIG_DVB_B2C2_FLEXCOP_USB=m
-# CONFIG_DVB_B2C2_FLEXCOP_USB_DEBUG is not set
-# CONFIG_DVB_AS102 is not set
-
-#
-# Webcam, TV (analog/digital) USB devices
-#
-CONFIG_VIDEO_EM28XX=m
-CONFIG_VIDEO_EM28XX_V4L2=m
-CONFIG_VIDEO_EM28XX_ALSA=m
-CONFIG_VIDEO_EM28XX_DVB=m
-CONFIG_VIDEO_EM28XX_RC=m
-
-#
-# Software defined radio USB devices
-#
-CONFIG_USB_AIRSPY=m
-# CONFIG_USB_HACKRF is not set
-CONFIG_MEDIA_PCI_SUPPORT=y
-
-#
-# Media capture support
-#
-CONFIG_VIDEO_MEYE=m
-CONFIG_VIDEO_SOLO6X10=m
-CONFIG_VIDEO_TW5864=m
-# CONFIG_VIDEO_TW68 is not set
-# CONFIG_VIDEO_TW686X is not set
-
-#
-# Media capture/analog TV support
-#
-CONFIG_VIDEO_IVTV=m
-# CONFIG_VIDEO_IVTV_DEPRECATED_IOCTLS is not set
-CONFIG_VIDEO_IVTV_ALSA=m
-CONFIG_VIDEO_FB_IVTV=m
-CONFIG_VIDEO_HEXIUM_GEMINI=m
-CONFIG_VIDEO_HEXIUM_ORION=m
-CONFIG_VIDEO_MXB=m
-# CONFIG_VIDEO_DT3155 is not set
-
-#
-# Media capture/analog/hybrid TV support
-#
-CONFIG_VIDEO_CX18=m
-CONFIG_VIDEO_CX18_ALSA=m
-CONFIG_VIDEO_CX23885=m
-CONFIG_MEDIA_ALTERA_CI=m
-# CONFIG_VIDEO_CX25821 is not set
-CONFIG_VIDEO_CX88=m
-CONFIG_VIDEO_CX88_ALSA=m
-CONFIG_VIDEO_CX88_BLACKBIRD=m
-CONFIG_VIDEO_CX88_DVB=m
-CONFIG_VIDEO_CX88_ENABLE_VP3054=y
-CONFIG_VIDEO_CX88_VP3054=m
-CONFIG_VIDEO_CX88_MPEG=m
-CONFIG_VIDEO_BT848=m
-CONFIG_DVB_BT8XX=m
-CONFIG_VIDEO_SAA7134=m
-CONFIG_VIDEO_SAA7134_ALSA=m
-CONFIG_VIDEO_SAA7134_RC=y
-CONFIG_VIDEO_SAA7134_DVB=m
-CONFIG_VIDEO_SAA7164=m
-
-#
-# Media digital TV PCI Adapters
-#
-CONFIG_DVB_AV7110_IR=y
-CONFIG_DVB_AV7110=m
-CONFIG_DVB_AV7110_OSD=y
-CONFIG_DVB_BUDGET_CORE=m
-CONFIG_DVB_BUDGET=m
-CONFIG_DVB_BUDGET_CI=m
-CONFIG_DVB_BUDGET_AV=m
-CONFIG_DVB_BUDGET_PATCH=m
-CONFIG_DVB_B2C2_FLEXCOP_PCI=m
-# CONFIG_DVB_B2C2_FLEXCOP_PCI_DEBUG is not set
-CONFIG_DVB_PLUTO2=m
-CONFIG_DVB_DM1105=m
-CONFIG_DVB_PT1=m
-# CONFIG_DVB_PT3 is not set
-CONFIG_MANTIS_CORE=m
-CONFIG_DVB_MANTIS=m
-CONFIG_DVB_HOPPER=m
-CONFIG_DVB_NGENE=m
-CONFIG_DVB_DDBRIDGE=m
-# CONFIG_DVB_DDBRIDGE_MSIENABLE is not set
-# CONFIG_DVB_SMIPCIE is not set
-# CONFIG_VIDEO_IPU3_CIO2 is not set
-# CONFIG_V4L_PLATFORM_DRIVERS is not set
-CONFIG_V4L_MEM2MEM_DRIVERS=y
-CONFIG_VIDEO_MEM2MEM_DEINTERLACE=m
-CONFIG_VIDEO_SH_VEU=m
-CONFIG_V4L_TEST_DRIVERS=y
-# CONFIG_VIDEO_VIMC is not set
-# CONFIG_VIDEO_VIVID is not set
-# CONFIG_VIDEO_VIM2M is not set
-# CONFIG_VIDEO_VICODEC is not set
-CONFIG_DVB_PLATFORM_DRIVERS=y
-# CONFIG_SDR_PLATFORM_DRIVERS is not set
-
-#
-# Supported MMC/SDIO adapters
-#
-CONFIG_SMS_SDIO_DRV=m
-CONFIG_RADIO_ADAPTERS=y
-CONFIG_RADIO_TEA575X=m
-CONFIG_RADIO_SI470X=m
-CONFIG_USB_SI470X=m
-CONFIG_I2C_SI470X=m
-CONFIG_RADIO_SI4713=m
-CONFIG_USB_SI4713=m
-CONFIG_PLATFORM_SI4713=m
-CONFIG_I2C_SI4713=m
-CONFIG_USB_MR800=m
-CONFIG_USB_DSBR=m
-CONFIG_RADIO_MAXIRADIO=m
-CONFIG_RADIO_SHARK=m
-CONFIG_RADIO_SHARK2=m
-CONFIG_USB_KEENE=m
-CONFIG_USB_RAREMONO=m
-CONFIG_USB_MA901=m
-CONFIG_RADIO_TEA5764=m
-CONFIG_RADIO_SAA7706H=m
-# CONFIG_RADIO_TEF6862 is not set
-CONFIG_RADIO_WL1273=m
-
-#
-# Texas Instruments WL128x FM driver (ST based)
-#
-CONFIG_RADIO_WL128X=m
-
-#
-# Supported FireWire (IEEE 1394) Adapters
-#
-CONFIG_DVB_FIREDTV=m
-CONFIG_DVB_FIREDTV_INPUT=y
-CONFIG_MEDIA_COMMON_OPTIONS=y
-
-#
-# common driver options
-#
-CONFIG_VIDEO_CX2341X=m
-CONFIG_VIDEO_TVEEPROM=m
-CONFIG_CYPRESS_FIRMWARE=m
-CONFIG_VIDEOBUF2_CORE=m
-CONFIG_VIDEOBUF2_V4L2=m
-CONFIG_VIDEOBUF2_MEMOPS=m
-CONFIG_VIDEOBUF2_DMA_CONTIG=m
-CONFIG_VIDEOBUF2_VMALLOC=m
-CONFIG_VIDEOBUF2_DMA_SG=m
-CONFIG_VIDEOBUF2_DVB=m
-CONFIG_DVB_B2C2_FLEXCOP=m
-CONFIG_VIDEO_SAA7146=m
-CONFIG_VIDEO_SAA7146_VV=m
-CONFIG_SMS_SIANO_MDTV=m
-CONFIG_SMS_SIANO_RC=y
-# CONFIG_SMS_SIANO_DEBUGFS is not set
-
-#
-# Media ancillary drivers (tuners, sensors, i2c, spi, frontends)
-#
-CONFIG_MEDIA_SUBDRV_AUTOSELECT=y
-CONFIG_MEDIA_ATTACH=y
-CONFIG_VIDEO_IR_I2C=m
-
-#
-# Audio decoders, processors and mixers
-#
-CONFIG_VIDEO_TVAUDIO=m
-CONFIG_VIDEO_TDA7432=m
-CONFIG_VIDEO_TDA9840=m
-CONFIG_VIDEO_TEA6415C=m
-CONFIG_VIDEO_TEA6420=m
-CONFIG_VIDEO_MSP3400=m
-CONFIG_VIDEO_CS3308=m
-CONFIG_VIDEO_CS5345=m
-CONFIG_VIDEO_CS53L32A=m
-CONFIG_VIDEO_WM8775=m
-CONFIG_VIDEO_WM8739=m
-CONFIG_VIDEO_VP27SMPX=m
-
-#
-# RDS decoders
-#
-CONFIG_VIDEO_SAA6588=m
-
-#
-# Video decoders
-#
-CONFIG_VIDEO_BT819=m
-CONFIG_VIDEO_BT856=m
-CONFIG_VIDEO_BT866=m
-CONFIG_VIDEO_KS0127=m
-CONFIG_VIDEO_SAA7110=m
-CONFIG_VIDEO_SAA711X=m
-CONFIG_VIDEO_TVP5150=m
-CONFIG_VIDEO_VPX3220=m
-
-#
-# Video and audio decoders
-#
-CONFIG_VIDEO_SAA717X=m
-CONFIG_VIDEO_CX25840=m
-
-#
-# Video encoders
-#
-CONFIG_VIDEO_SAA7127=m
-CONFIG_VIDEO_SAA7185=m
-CONFIG_VIDEO_ADV7170=m
-CONFIG_VIDEO_ADV7175=m
-
-#
-# Camera sensor devices
-#
-CONFIG_VIDEO_OV2640=m
-CONFIG_VIDEO_MT9V011=m
-
-#
-# Flash devices
-#
-
-#
-# Video improvement chips
-#
-CONFIG_VIDEO_UPD64031A=m
-CONFIG_VIDEO_UPD64083=m
-
-#
-# Audio/Video compression chips
-#
-CONFIG_VIDEO_SAA6752HS=m
-
-#
-# SDR tuner chips
-#
-
-#
-# Miscellaneous helper chips
-#
-CONFIG_VIDEO_M52790=m
-
-#
-# Sensors used on soc_camera driver
-#
-CONFIG_MEDIA_TUNER=m
-CONFIG_MEDIA_TUNER_SIMPLE=m
-CONFIG_MEDIA_TUNER_TDA18250=m
-CONFIG_MEDIA_TUNER_TDA8290=m
-CONFIG_MEDIA_TUNER_TDA827X=m
-CONFIG_MEDIA_TUNER_TDA18271=m
-CONFIG_MEDIA_TUNER_TDA9887=m
-CONFIG_MEDIA_TUNER_TEA5761=m
-CONFIG_MEDIA_TUNER_TEA5767=m
-CONFIG_MEDIA_TUNER_MT20XX=m
-CONFIG_MEDIA_TUNER_MT2060=m
-CONFIG_MEDIA_TUNER_MT2063=m
-CONFIG_MEDIA_TUNER_MT2266=m
-CONFIG_MEDIA_TUNER_MT2131=m
-CONFIG_MEDIA_TUNER_QT1010=m
-CONFIG_MEDIA_TUNER_XC2028=m
-CONFIG_MEDIA_TUNER_XC5000=m
-CONFIG_MEDIA_TUNER_XC4000=m
-CONFIG_MEDIA_TUNER_MXL5005S=m
-CONFIG_MEDIA_TUNER_MXL5007T=m
-CONFIG_MEDIA_TUNER_MC44S803=m
-CONFIG_MEDIA_TUNER_MAX2165=m
-CONFIG_MEDIA_TUNER_TDA18218=m
-CONFIG_MEDIA_TUNER_FC0011=m
-CONFIG_MEDIA_TUNER_FC0012=m
-CONFIG_MEDIA_TUNER_FC0013=m
-CONFIG_MEDIA_TUNER_TDA18212=m
-CONFIG_MEDIA_TUNER_E4000=m
-CONFIG_MEDIA_TUNER_FC2580=m
-CONFIG_MEDIA_TUNER_M88RS6000T=m
-CONFIG_MEDIA_TUNER_TUA9001=m
-CONFIG_MEDIA_TUNER_SI2157=m
-CONFIG_MEDIA_TUNER_IT913X=m
-CONFIG_MEDIA_TUNER_R820T=m
-CONFIG_MEDIA_TUNER_QM1D1C0042=m
-CONFIG_MEDIA_TUNER_QM1D1B0004=m
-
-#
-# Multistandard (satellite) frontends
-#
-CONFIG_DVB_STB0899=m
-CONFIG_DVB_STB6100=m
-CONFIG_DVB_STV090x=m
-CONFIG_DVB_STV0910=m
-CONFIG_DVB_STV6110x=m
-CONFIG_DVB_STV6111=m
-CONFIG_DVB_MXL5XX=m
-CONFIG_DVB_M88DS3103=m
-
-#
-# Multistandard (cable + terrestrial) frontends
-#
-CONFIG_DVB_DRXK=m
-CONFIG_DVB_TDA18271C2DD=m
-CONFIG_DVB_SI2165=m
-CONFIG_DVB_MN88472=m
-CONFIG_DVB_MN88473=m
-
-#
-# DVB-S (satellite) frontends
-#
-CONFIG_DVB_CX24110=m
-CONFIG_DVB_CX24123=m
-CONFIG_DVB_MT312=m
-CONFIG_DVB_ZL10036=m
-CONFIG_DVB_ZL10039=m
-CONFIG_DVB_S5H1420=m
-CONFIG_DVB_STV0288=m
-CONFIG_DVB_STB6000=m
-CONFIG_DVB_STV0299=m
-CONFIG_DVB_STV6110=m
-CONFIG_DVB_STV0900=m
-CONFIG_DVB_TDA8083=m
-CONFIG_DVB_TDA10086=m
-CONFIG_DVB_TDA8261=m
-CONFIG_DVB_VES1X93=m
-CONFIG_DVB_TUNER_ITD1000=m
-CONFIG_DVB_TUNER_CX24113=m
-CONFIG_DVB_TDA826X=m
-CONFIG_DVB_TUA6100=m
-CONFIG_DVB_CX24116=m
-CONFIG_DVB_CX24117=m
-CONFIG_DVB_CX24120=m
-CONFIG_DVB_SI21XX=m
-CONFIG_DVB_TS2020=m
-CONFIG_DVB_DS3000=m
-CONFIG_DVB_MB86A16=m
-CONFIG_DVB_TDA10071=m
-
-#
-# DVB-T (terrestrial) frontends
-#
-CONFIG_DVB_SP8870=m
-CONFIG_DVB_SP887X=m
-CONFIG_DVB_CX22700=m
-CONFIG_DVB_CX22702=m
-CONFIG_DVB_DRXD=m
-CONFIG_DVB_L64781=m
-CONFIG_DVB_TDA1004X=m
-CONFIG_DVB_NXT6000=m
-CONFIG_DVB_MT352=m
-CONFIG_DVB_ZL10353=m
-CONFIG_DVB_DIB3000MB=m
-CONFIG_DVB_DIB3000MC=m
-CONFIG_DVB_DIB7000M=m
-CONFIG_DVB_DIB7000P=m
-CONFIG_DVB_TDA10048=m
-CONFIG_DVB_AF9013=m
-CONFIG_DVB_EC100=m
-CONFIG_DVB_STV0367=m
-CONFIG_DVB_CXD2820R=m
-CONFIG_DVB_CXD2841ER=m
-CONFIG_DVB_RTL2830=m
-CONFIG_DVB_RTL2832=m
-CONFIG_DVB_RTL2832_SDR=m
-CONFIG_DVB_SI2168=m
-CONFIG_DVB_GP8PSK_FE=m
-
-#
-# DVB-C (cable) frontends
-#
-CONFIG_DVB_VES1820=m
-CONFIG_DVB_TDA10021=m
-CONFIG_DVB_TDA10023=m
-CONFIG_DVB_STV0297=m
-
-#
-# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
-#
-CONFIG_DVB_NXT200X=m
-CONFIG_DVB_OR51211=m
-CONFIG_DVB_OR51132=m
-CONFIG_DVB_BCM3510=m
-CONFIG_DVB_LGDT330X=m
-CONFIG_DVB_LGDT3305=m
-CONFIG_DVB_LGDT3306A=m
-CONFIG_DVB_LG2160=m
-CONFIG_DVB_S5H1409=m
-CONFIG_DVB_AU8522=m
-CONFIG_DVB_AU8522_DTV=m
-CONFIG_DVB_AU8522_V4L=m
-CONFIG_DVB_S5H1411=m
-
-#
-# ISDB-T (terrestrial) frontends
-#
-CONFIG_DVB_S921=m
-CONFIG_DVB_DIB8000=m
-CONFIG_DVB_MB86A20S=m
-
-#
-# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
-#
-CONFIG_DVB_TC90522=m
-
-#
-# Digital terrestrial only tuners/PLL
-#
-CONFIG_DVB_PLL=m
-CONFIG_DVB_TUNER_DIB0070=m
-CONFIG_DVB_TUNER_DIB0090=m
-
-#
-# SEC control devices for DVB-S
-#
-CONFIG_DVB_DRX39XYJ=m
-CONFIG_DVB_LNBH25=m
-CONFIG_DVB_LNBP21=m
-CONFIG_DVB_LNBP22=m
-CONFIG_DVB_ISL6405=m
-CONFIG_DVB_ISL6421=m
-CONFIG_DVB_ISL6423=m
-CONFIG_DVB_A8293=m
-CONFIG_DVB_LGS8GXX=m
-CONFIG_DVB_ATBM8830=m
-CONFIG_DVB_TDA665x=m
-CONFIG_DVB_IX2505V=m
-CONFIG_DVB_M88RS2000=m
-CONFIG_DVB_AF9033=m
-
-#
-# Common Interface (EN50221) controller drivers
-#
-CONFIG_DVB_CXD2099=m
-
-#
-# Tools to develop new frontends
-#
-CONFIG_DVB_DUMMY_FE=m
-
-#
-# Graphics support
-#
-CONFIG_AGP=y
-CONFIG_AGP_AMD64=y
-CONFIG_AGP_INTEL=y
-CONFIG_AGP_SIS=y
-CONFIG_AGP_VIA=y
-CONFIG_INTEL_GTT=y
-CONFIG_VGA_ARB=y
-CONFIG_VGA_ARB_MAX_GPUS=16
-CONFIG_VGA_SWITCHEROO=y
-CONFIG_DRM=m
-CONFIG_DRM_MIPI_DSI=y
-# CONFIG_DRM_DP_AUX_CHARDEV is not set
-CONFIG_DRM_KMS_HELPER=m
-CONFIG_DRM_KMS_FB_HELPER=y
-CONFIG_DRM_FBDEV_EMULATION=y
-CONFIG_DRM_FBDEV_OVERALLOC=100
-CONFIG_DRM_LOAD_EDID_FIRMWARE=y
-# CONFIG_DRM_DP_CEC is not set
-CONFIG_DRM_TTM=m
-CONFIG_DRM_VM=y
-
-#
-# I2C encoder or helper chips
-#
-CONFIG_DRM_I2C_CH7006=m
-CONFIG_DRM_I2C_SIL164=m
-CONFIG_DRM_I2C_NXP_TDA998X=m
-# CONFIG_DRM_I2C_NXP_TDA9950 is not set
-CONFIG_DRM_RADEON=m
-CONFIG_DRM_RADEON_USERPTR=y
-# CONFIG_DRM_AMDGPU is not set
-
-#
-# ACP (Audio CoProcessor) Configuration
-#
-
-#
-# AMD Library routines
-#
-CONFIG_DRM_NOUVEAU=m
-CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT=y
-CONFIG_NOUVEAU_DEBUG=5
-CONFIG_NOUVEAU_DEBUG_DEFAULT=3
-# CONFIG_NOUVEAU_DEBUG_MMU is not set
-CONFIG_DRM_NOUVEAU_BACKLIGHT=y
-CONFIG_DRM_I915=m
-# CONFIG_DRM_I915_ALPHA_SUPPORT is not set
-CONFIG_DRM_I915_CAPTURE_ERROR=y
-CONFIG_DRM_I915_COMPRESS_ERROR=y
-CONFIG_DRM_I915_USERPTR=y
-CONFIG_DRM_I915_GVT=y
-CONFIG_DRM_VGEM=m
-# CONFIG_DRM_VKMS is not set
-CONFIG_DRM_VMWGFX=m
-CONFIG_DRM_VMWGFX_FBCON=y
-CONFIG_DRM_GMA500=m
-CONFIG_DRM_GMA600=y
-CONFIG_DRM_GMA3600=y
-CONFIG_DRM_UDL=m
-CONFIG_DRM_AST=m
-CONFIG_DRM_MGAG200=m
-CONFIG_DRM_CIRRUS_QEMU=m
-CONFIG_DRM_QXL=m
-CONFIG_DRM_BOCHS=m
-# CONFIG_DRM_VIRTIO_GPU is not set
-CONFIG_DRM_PANEL=y
-
-#
-# Display Panels
-#
-# CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN is not set
-CONFIG_DRM_BRIDGE=y
-CONFIG_DRM_PANEL_BRIDGE=y
-
-#
-# Display Interface Bridges
-#
-# CONFIG_DRM_ANALOGIX_ANX78XX is not set
-# CONFIG_DRM_HISI_HIBMC is not set
-# CONFIG_DRM_TINYDRM is not set
-# CONFIG_DRM_XEN is not set
-# CONFIG_DRM_LEGACY is not set
-CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
-
-#
-# Frame buffer Devices
-#
-CONFIG_FB=y
-# CONFIG_FIRMWARE_EDID is not set
-CONFIG_FB_CMDLINE=y
-CONFIG_FB_NOTIFY=y
-CONFIG_FB_BOOT_VESA_SUPPORT=y
-CONFIG_FB_CFB_FILLRECT=y
-CONFIG_FB_CFB_COPYAREA=y
-CONFIG_FB_CFB_IMAGEBLIT=y
-CONFIG_FB_SYS_FILLRECT=y
-CONFIG_FB_SYS_COPYAREA=y
-CONFIG_FB_SYS_IMAGEBLIT=y
-CONFIG_FB_FOREIGN_ENDIAN=y
-CONFIG_FB_BOTH_ENDIAN=y
-# CONFIG_FB_BIG_ENDIAN is not set
-# CONFIG_FB_LITTLE_ENDIAN is not set
-CONFIG_FB_SYS_FOPS=y
-CONFIG_FB_DEFERRED_IO=y
-CONFIG_FB_BACKLIGHT=y
-CONFIG_FB_MODE_HELPERS=y
-CONFIG_FB_TILEBLITTING=y
-
-#
-# Frame buffer hardware drivers
-#
-# CONFIG_FB_CIRRUS is not set
-# CONFIG_FB_PM2 is not set
-# CONFIG_FB_CYBER2000 is not set
-# CONFIG_FB_ARC is not set
-# CONFIG_FB_ASILIANT is not set
-# CONFIG_FB_IMSTT is not set
-CONFIG_FB_VGA16=m
-CONFIG_FB_UVESA=m
-CONFIG_FB_VESA=y
-CONFIG_FB_EFI=y
-# CONFIG_FB_N411 is not set
-# CONFIG_FB_HGA is not set
-CONFIG_FB_OPENCORES=m
-# CONFIG_FB_S1D13XXX is not set
-# CONFIG_FB_NVIDIA is not set
-# CONFIG_FB_RIVA is not set
-# CONFIG_FB_I740 is not set
-# CONFIG_FB_LE80578 is not set
-# CONFIG_FB_MATROX is not set
-# CONFIG_FB_RADEON is not set
-# CONFIG_FB_ATY128 is not set
-# CONFIG_FB_ATY is not set
-# CONFIG_FB_S3 is not set
-# CONFIG_FB_SAVAGE is not set
-# CONFIG_FB_SIS is not set
-# CONFIG_FB_VIA is not set
-# CONFIG_FB_NEOMAGIC is not set
-# CONFIG_FB_KYRO is not set
-# CONFIG_FB_3DFX is not set
-CONFIG_FB_VOODOO1=m
-# CONFIG_FB_VT8623 is not set
-# CONFIG_FB_TRIDENT is not set
-# CONFIG_FB_ARK is not set
-# CONFIG_FB_PM3 is not set
-# CONFIG_FB_CARMINE is not set
-# CONFIG_FB_SM501 is not set
-# CONFIG_FB_SMSCUFX is not set
-# CONFIG_FB_UDL is not set
-CONFIG_FB_IBM_GXT4500=m
-CONFIG_FB_VIRTUAL=m
-CONFIG_XEN_FBDEV_FRONTEND=y
-# CONFIG_FB_METRONOME is not set
-# CONFIG_FB_MB862XX is not set
-# CONFIG_FB_BROADSHEET is not set
-CONFIG_FB_HYPERV=m
-# CONFIG_FB_SIMPLE is not set
-CONFIG_FB_SM712=m
-CONFIG_BACKLIGHT_LCD_SUPPORT=y
-CONFIG_LCD_CLASS_DEVICE=m
-CONFIG_LCD_PLATFORM=m
-CONFIG_BACKLIGHT_CLASS_DEVICE=y
-# CONFIG_BACKLIGHT_GENERIC is not set
-CONFIG_BACKLIGHT_PWM=m
-CONFIG_BACKLIGHT_APPLE=m
-CONFIG_BACKLIGHT_PM8941_WLED=m
-# CONFIG_BACKLIGHT_SAHARA is not set
-# CONFIG_BACKLIGHT_ADP8860 is not set
-# CONFIG_BACKLIGHT_ADP8870 is not set
-CONFIG_BACKLIGHT_LM3630A=m
-CONFIG_BACKLIGHT_LM3639=m
-CONFIG_BACKLIGHT_LP855X=m
-CONFIG_BACKLIGHT_SKY81452=m
-CONFIG_BACKLIGHT_GPIO=m
-CONFIG_BACKLIGHT_LV5207LP=m
-CONFIG_BACKLIGHT_BD6107=m
-# CONFIG_BACKLIGHT_ARCXCNN is not set
-CONFIG_VGASTATE=m
-CONFIG_HDMI=y
-
-#
-# Console display driver support
-#
-CONFIG_VGA_CONSOLE=y
-CONFIG_VGACON_SOFT_SCROLLBACK=y
-CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
-# CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT is not set
-CONFIG_DUMMY_CONSOLE=y
-CONFIG_DUMMY_CONSOLE_COLUMNS=80
-CONFIG_DUMMY_CONSOLE_ROWS=25
-CONFIG_FRAMEBUFFER_CONSOLE=y
-CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
-CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
-# CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set
-# CONFIG_LOGO is not set
-CONFIG_SOUND=m
-CONFIG_SOUND_OSS_CORE=y
-CONFIG_SOUND_OSS_CORE_PRECLAIM=y
-CONFIG_SND=m
-CONFIG_SND_TIMER=m
-CONFIG_SND_PCM=m
-CONFIG_SND_HWDEP=m
-CONFIG_SND_SEQ_DEVICE=m
-CONFIG_SND_RAWMIDI=m
-CONFIG_SND_JACK=y
-CONFIG_SND_JACK_INPUT_DEV=y
-CONFIG_SND_OSSEMUL=y
-CONFIG_SND_MIXER_OSS=m
-CONFIG_SND_PCM_OSS=m
-CONFIG_SND_PCM_OSS_PLUGINS=y
-CONFIG_SND_PCM_TIMER=y
-CONFIG_SND_HRTIMER=m
-CONFIG_SND_DYNAMIC_MINORS=y
-CONFIG_SND_MAX_CARDS=32
-# CONFIG_SND_SUPPORT_OLD_API is not set
-CONFIG_SND_PROC_FS=y
-CONFIG_SND_VERBOSE_PROCFS=y
-# CONFIG_SND_VERBOSE_PRINTK is not set
-# CONFIG_SND_DEBUG is not set
-CONFIG_SND_VMASTER=y
-CONFIG_SND_DMA_SGBUF=y
-CONFIG_SND_SEQUENCER=m
-CONFIG_SND_SEQ_DUMMY=m
-CONFIG_SND_SEQUENCER_OSS=m
-CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
-CONFIG_SND_SEQ_MIDI_EVENT=m
-CONFIG_SND_SEQ_MIDI=m
-CONFIG_SND_SEQ_MIDI_EMUL=m
-CONFIG_SND_SEQ_VIRMIDI=m
-CONFIG_SND_MPU401_UART=m
-CONFIG_SND_OPL3_LIB=m
-CONFIG_SND_OPL3_LIB_SEQ=m
-CONFIG_SND_VX_LIB=m
-CONFIG_SND_AC97_CODEC=m
-CONFIG_SND_DRIVERS=y
-CONFIG_SND_PCSP=m
-CONFIG_SND_DUMMY=m
-CONFIG_SND_ALOOP=m
-CONFIG_SND_VIRMIDI=m
-CONFIG_SND_MTPAV=m
-CONFIG_SND_MTS64=m
-CONFIG_SND_SERIAL_U16550=m
-CONFIG_SND_MPU401=m
-CONFIG_SND_PORTMAN2X4=m
-CONFIG_SND_AC97_POWER_SAVE=y
-CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
-CONFIG_SND_SB_COMMON=m
-CONFIG_SND_PCI=y
-CONFIG_SND_AD1889=m
-CONFIG_SND_ALS300=m
-CONFIG_SND_ALS4000=m
-CONFIG_SND_ALI5451=m
-CONFIG_SND_ASIHPI=m
-CONFIG_SND_ATIIXP=m
-CONFIG_SND_ATIIXP_MODEM=m
-CONFIG_SND_AU8810=m
-CONFIG_SND_AU8820=m
-CONFIG_SND_AU8830=m
-# CONFIG_SND_AW2 is not set
-CONFIG_SND_AZT3328=m
-CONFIG_SND_BT87X=m
-# CONFIG_SND_BT87X_OVERCLOCK is not set
-CONFIG_SND_CA0106=m
-CONFIG_SND_CMIPCI=m
-CONFIG_SND_OXYGEN_LIB=m
-CONFIG_SND_OXYGEN=m
-CONFIG_SND_CS4281=m
-CONFIG_SND_CS46XX=m
-CONFIG_SND_CS46XX_NEW_DSP=y
-CONFIG_SND_CTXFI=m
-CONFIG_SND_DARLA20=m
-CONFIG_SND_GINA20=m
-CONFIG_SND_LAYLA20=m
-CONFIG_SND_DARLA24=m
-CONFIG_SND_GINA24=m
-CONFIG_SND_LAYLA24=m
-CONFIG_SND_MONA=m
-CONFIG_SND_MIA=m
-CONFIG_SND_ECHO3G=m
-CONFIG_SND_INDIGO=m
-CONFIG_SND_INDIGOIO=m
-CONFIG_SND_INDIGODJ=m
-CONFIG_SND_INDIGOIOX=m
-CONFIG_SND_INDIGODJX=m
-CONFIG_SND_EMU10K1=m
-CONFIG_SND_EMU10K1_SEQ=m
-CONFIG_SND_EMU10K1X=m
-CONFIG_SND_ENS1370=m
-CONFIG_SND_ENS1371=m
-CONFIG_SND_ES1938=m
-CONFIG_SND_ES1968=m
-CONFIG_SND_ES1968_INPUT=y
-CONFIG_SND_ES1968_RADIO=y
-CONFIG_SND_FM801=m
-CONFIG_SND_FM801_TEA575X_BOOL=y
-CONFIG_SND_HDSP=m
-CONFIG_SND_HDSPM=m
-CONFIG_SND_ICE1712=m
-CONFIG_SND_ICE1724=m
-CONFIG_SND_INTEL8X0=m
-CONFIG_SND_INTEL8X0M=m
-CONFIG_SND_KORG1212=m
-CONFIG_SND_LOLA=m
-CONFIG_SND_LX6464ES=m
-CONFIG_SND_MAESTRO3=m
-CONFIG_SND_MAESTRO3_INPUT=y
-CONFIG_SND_MIXART=m
-CONFIG_SND_NM256=m
-CONFIG_SND_PCXHR=m
-CONFIG_SND_RIPTIDE=m
-CONFIG_SND_RME32=m
-CONFIG_SND_RME96=m
-CONFIG_SND_RME9652=m
-CONFIG_SND_SONICVIBES=m
-CONFIG_SND_TRIDENT=m
-CONFIG_SND_VIA82XX=m
-CONFIG_SND_VIA82XX_MODEM=m
-CONFIG_SND_VIRTUOSO=m
-CONFIG_SND_VX222=m
-CONFIG_SND_YMFPCI=m
-
-#
-# HD-Audio
-#
-CONFIG_SND_HDA=m
-CONFIG_SND_HDA_INTEL=m
-CONFIG_SND_HDA_HWDEP=y
-CONFIG_SND_HDA_RECONFIG=y
-CONFIG_SND_HDA_INPUT_BEEP=y
-CONFIG_SND_HDA_INPUT_BEEP_MODE=0
-CONFIG_SND_HDA_PATCH_LOADER=y
-CONFIG_SND_HDA_CODEC_REALTEK=m
-CONFIG_SND_HDA_CODEC_ANALOG=m
-CONFIG_SND_HDA_CODEC_SIGMATEL=m
-CONFIG_SND_HDA_CODEC_VIA=m
-CONFIG_SND_HDA_CODEC_HDMI=m
-CONFIG_SND_HDA_CODEC_CIRRUS=m
-CONFIG_SND_HDA_CODEC_CONEXANT=m
-CONFIG_SND_HDA_CODEC_CA0110=m
-CONFIG_SND_HDA_CODEC_CA0132=m
-CONFIG_SND_HDA_CODEC_CA0132_DSP=y
-CONFIG_SND_HDA_CODEC_CMEDIA=m
-CONFIG_SND_HDA_CODEC_SI3054=m
-CONFIG_SND_HDA_GENERIC=m
-CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
-CONFIG_SND_HDA_CORE=m
-CONFIG_SND_HDA_DSP_LOADER=y
-CONFIG_SND_HDA_COMPONENT=y
-CONFIG_SND_HDA_I915=y
-CONFIG_SND_HDA_PREALLOC_SIZE=4096
-CONFIG_SND_USB=y
-CONFIG_SND_USB_AUDIO=m
-CONFIG_SND_USB_UA101=m
-CONFIG_SND_USB_USX2Y=m
-CONFIG_SND_USB_CAIAQ=m
-CONFIG_SND_USB_CAIAQ_INPUT=y
-CONFIG_SND_USB_US122L=m
-CONFIG_SND_USB_6FIRE=m
-# CONFIG_SND_USB_HIFACE is not set
-CONFIG_SND_BCD2000=m
-CONFIG_SND_USB_LINE6=m
-CONFIG_SND_USB_POD=m
-CONFIG_SND_USB_PODHD=m
-CONFIG_SND_USB_TONEPORT=m
-CONFIG_SND_USB_VARIAX=m
-CONFIG_SND_FIREWIRE=y
-CONFIG_SND_FIREWIRE_LIB=m
-CONFIG_SND_DICE=m
-# CONFIG_SND_OXFW is not set
-CONFIG_SND_ISIGHT=m
-CONFIG_SND_FIREWORKS=m
-CONFIG_SND_BEBOB=m
-CONFIG_SND_FIREWIRE_DIGI00X=m
-CONFIG_SND_FIREWIRE_TASCAM=m
-# CONFIG_SND_FIREWIRE_MOTU is not set
-# CONFIG_SND_FIREFACE is not set
-# CONFIG_SND_PCMCIA is not set
-# CONFIG_SND_SOC is not set
-CONFIG_SND_X86=y
-# CONFIG_HDMI_LPE_AUDIO is not set
-CONFIG_SND_SYNTH_EMUX=m
-# CONFIG_SND_XEN_FRONTEND is not set
-CONFIG_AC97_BUS=m
-
-#
-# HID support
-#
-CONFIG_HID=y
-CONFIG_HID_BATTERY_STRENGTH=y
-CONFIG_HIDRAW=y
-CONFIG_UHID=y
-CONFIG_HID_GENERIC=y
-
-#
-# Special HID drivers
-#
-CONFIG_HID_A4TECH=y
-# CONFIG_HID_ACCUTOUCH is not set
-CONFIG_HID_ACRUX=m
-CONFIG_HID_ACRUX_FF=y
-CONFIG_HID_APPLE=y
-CONFIG_HID_APPLEIR=m
-# CONFIG_HID_ASUS is not set
-CONFIG_HID_AUREAL=m
-CONFIG_HID_BELKIN=y
-CONFIG_HID_BETOP_FF=m
-CONFIG_HID_CHERRY=y
-CONFIG_HID_CHICONY=y
-CONFIG_HID_CORSAIR=m
-# CONFIG_HID_COUGAR is not set
-CONFIG_HID_PRODIKEYS=m
-# CONFIG_HID_CMEDIA is not set
-CONFIG_HID_CP2112=m
-CONFIG_HID_CYPRESS=y
-CONFIG_HID_DRAGONRISE=m
-CONFIG_DRAGONRISE_FF=y
-CONFIG_HID_EMS_FF=m
-# CONFIG_HID_ELAN is not set
-CONFIG_HID_ELECOM=m
-CONFIG_HID_ELO=m
-CONFIG_HID_EZKEY=y
-CONFIG_HID_GEMBIRD=m
-CONFIG_HID_GFRM=m
-CONFIG_HID_HOLTEK=m
-CONFIG_HOLTEK_FF=y
-# CONFIG_HID_GOOGLE_HAMMER is not set
-CONFIG_HID_GT683R=m
-CONFIG_HID_KEYTOUCH=m
-CONFIG_HID_KYE=m
-CONFIG_HID_UCLOGIC=m
-CONFIG_HID_WALTOP=m
-CONFIG_HID_GYRATION=m
-CONFIG_HID_ICADE=m
-CONFIG_HID_ITE=y
-# CONFIG_HID_JABRA is not set
-CONFIG_HID_TWINHAN=m
-CONFIG_HID_KENSINGTON=y
-CONFIG_HID_LCPOWER=m
-CONFIG_HID_LED=m
-CONFIG_HID_LENOVO=m
-CONFIG_HID_LOGITECH=y
-CONFIG_HID_LOGITECH_DJ=m
-CONFIG_HID_LOGITECH_HIDPP=m
-CONFIG_LOGITECH_FF=y
-CONFIG_LOGIRUMBLEPAD2_FF=y
-CONFIG_LOGIG940_FF=y
-CONFIG_LOGIWHEELS_FF=y
-CONFIG_HID_MAGICMOUSE=m
-# CONFIG_HID_MAYFLASH is not set
-CONFIG_HID_REDRAGON=y
-CONFIG_HID_MICROSOFT=y
-CONFIG_HID_MONTEREY=y
-CONFIG_HID_MULTITOUCH=m
-# CONFIG_HID_NTI is not set
-CONFIG_HID_NTRIG=y
-CONFIG_HID_ORTEK=m
-CONFIG_HID_PANTHERLORD=m
-CONFIG_PANTHERLORD_FF=y
-# CONFIG_HID_PENMOUNT is not set
-CONFIG_HID_PETALYNX=m
-CONFIG_HID_PICOLCD=m
-CONFIG_HID_PICOLCD_FB=y
-CONFIG_HID_PICOLCD_BACKLIGHT=y
-CONFIG_HID_PICOLCD_LCD=y
-CONFIG_HID_PICOLCD_LEDS=y
-CONFIG_HID_PICOLCD_CIR=y
-CONFIG_HID_PLANTRONICS=y
-CONFIG_HID_PRIMAX=m
-# CONFIG_HID_RETRODE is not set
-CONFIG_HID_ROCCAT=m
-CONFIG_HID_SAITEK=m
-CONFIG_HID_SAMSUNG=m
-CONFIG_HID_SONY=m
-CONFIG_SONY_FF=y
-CONFIG_HID_SPEEDLINK=m
-# CONFIG_HID_STEAM is not set
-CONFIG_HID_STEELSERIES=m
-CONFIG_HID_SUNPLUS=m
-CONFIG_HID_RMI=m
-CONFIG_HID_GREENASIA=m
-CONFIG_GREENASIA_FF=y
-CONFIG_HID_HYPERV_MOUSE=m
-CONFIG_HID_SMARTJOYPLUS=m
-CONFIG_SMARTJOYPLUS_FF=y
-CONFIG_HID_TIVO=m
-CONFIG_HID_TOPSEED=m
-CONFIG_HID_THINGM=m
-CONFIG_HID_THRUSTMASTER=m
-CONFIG_THRUSTMASTER_FF=y
-# CONFIG_HID_UDRAW_PS3 is not set
-CONFIG_HID_WACOM=m
-CONFIG_HID_WIIMOTE=m
-CONFIG_HID_XINMO=m
-CONFIG_HID_ZEROPLUS=m
-CONFIG_ZEROPLUS_FF=y
-CONFIG_HID_ZYDACRON=m
-CONFIG_HID_SENSOR_HUB=m
-CONFIG_HID_SENSOR_CUSTOM_SENSOR=m
-CONFIG_HID_ALPS=m
-
-#
-# USB HID support
-#
-CONFIG_USB_HID=y
-CONFIG_HID_PID=y
-CONFIG_USB_HIDDEV=y
-
-#
-# I2C HID support
-#
-CONFIG_I2C_HID=m
-
-#
-# Intel ISH HID support
-#
-CONFIG_INTEL_ISH_HID=m
-CONFIG_USB_OHCI_LITTLE_ENDIAN=y
-CONFIG_USB_SUPPORT=y
-CONFIG_USB_COMMON=y
-CONFIG_USB_ARCH_HAS_HCD=y
-CONFIG_USB=y
-CONFIG_USB_PCI=y
-CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
-
-#
-# Miscellaneous USB options
-#
-CONFIG_USB_DEFAULT_PERSIST=y
-# CONFIG_USB_DYNAMIC_MINORS is not set
-CONFIG_USB_OTG=y
-# CONFIG_USB_OTG_WHITELIST is not set
-# CONFIG_USB_OTG_BLACKLIST_HUB is not set
-CONFIG_USB_OTG_FSM=m
-CONFIG_USB_LEDS_TRIGGER_USBPORT=m
-CONFIG_USB_MON=y
-CONFIG_USB_WUSB=m
-CONFIG_USB_WUSB_CBAF=m
-# CONFIG_USB_WUSB_CBAF_DEBUG is not set
-
-#
-# USB Host Controller Drivers
-#
-# CONFIG_USB_C67X00_HCD is not set
-CONFIG_USB_XHCI_HCD=y
-# CONFIG_USB_XHCI_DBGCAP is not set
-CONFIG_USB_XHCI_PCI=y
-CONFIG_USB_XHCI_PLATFORM=m
-CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_EHCI_ROOT_HUB_TT=y
-CONFIG_USB_EHCI_TT_NEWSCHED=y
-CONFIG_USB_EHCI_PCI=y
-# CONFIG_USB_EHCI_HCD_PLATFORM is not set
-# CONFIG_USB_OXU210HP_HCD is not set
-# CONFIG_USB_ISP116X_HCD is not set
-CONFIG_USB_FOTG210_HCD=m
-CONFIG_USB_OHCI_HCD=y
-CONFIG_USB_OHCI_HCD_PCI=y
-# CONFIG_USB_OHCI_HCD_PLATFORM is not set
-CONFIG_USB_UHCI_HCD=y
-CONFIG_USB_U132_HCD=m
-CONFIG_USB_SL811_HCD=m
-CONFIG_USB_SL811_HCD_ISO=y
-# CONFIG_USB_SL811_CS is not set
-# CONFIG_USB_R8A66597_HCD is not set
-CONFIG_USB_WHCI_HCD=m
-CONFIG_USB_HWA_HCD=m
-# CONFIG_USB_HCD_BCMA is not set
-# CONFIG_USB_HCD_SSB is not set
-# CONFIG_USB_HCD_TEST_MODE is not set
-
-#
-# USB Device Class drivers
-#
-CONFIG_USB_ACM=m
-CONFIG_USB_PRINTER=m
-CONFIG_USB_WDM=m
-CONFIG_USB_TMC=m
-
-#
-# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
-#
-
-#
-# also be needed; see USB_STORAGE Help for more info
-#
-CONFIG_USB_STORAGE=m
-# CONFIG_USB_STORAGE_DEBUG is not set
-CONFIG_USB_STORAGE_REALTEK=m
-CONFIG_REALTEK_AUTOPM=y
-CONFIG_USB_STORAGE_DATAFAB=m
-CONFIG_USB_STORAGE_FREECOM=m
-CONFIG_USB_STORAGE_ISD200=m
-CONFIG_USB_STORAGE_USBAT=m
-CONFIG_USB_STORAGE_SDDR09=m
-CONFIG_USB_STORAGE_SDDR55=m
-CONFIG_USB_STORAGE_JUMPSHOT=m
-CONFIG_USB_STORAGE_ALAUDA=m
-CONFIG_USB_STORAGE_ONETOUCH=m
-CONFIG_USB_STORAGE_KARMA=m
-CONFIG_USB_STORAGE_CYPRESS_ATACB=m
-CONFIG_USB_STORAGE_ENE_UB6250=m
-CONFIG_USB_UAS=m
-
-#
-# USB Imaging devices
-#
-CONFIG_USB_MDC800=m
-CONFIG_USB_MICROTEK=m
-# CONFIG_USBIP_CORE is not set
-CONFIG_USB_MUSB_HDRC=m
-CONFIG_USB_MUSB_HOST=y
-
-#
-# Platform Glue Layer
-#
-
-#
-# MUSB DMA mode
-#
-CONFIG_MUSB_PIO_ONLY=y
-CONFIG_USB_DWC3=m
-CONFIG_USB_DWC3_HOST=y
-
-#
-# Platform Glue Driver Support
-#
-CONFIG_USB_DWC3_PCI=m
-CONFIG_USB_DWC3_HAPS=m
-CONFIG_USB_DWC2=y
-CONFIG_USB_DWC2_HOST=y
-
-#
-# Gadget/Dual-role mode requires USB Gadget support to be enabled
-#
-CONFIG_USB_DWC2_PCI=y
-# CONFIG_USB_DWC2_DEBUG is not set
-# CONFIG_USB_DWC2_TRACK_MISSED_SOFS is not set
-# CONFIG_USB_CHIPIDEA is not set
-CONFIG_USB_ISP1760=m
-CONFIG_USB_ISP1760_HCD=y
-CONFIG_USB_ISP1760_HOST_ROLE=y
-
-#
-# USB port drivers
-#
-CONFIG_USB_USS720=m
-CONFIG_USB_SERIAL=y
-CONFIG_USB_SERIAL_CONSOLE=y
-CONFIG_USB_SERIAL_GENERIC=y
-# CONFIG_USB_SERIAL_SIMPLE is not set
-CONFIG_USB_SERIAL_AIRCABLE=m
-CONFIG_USB_SERIAL_ARK3116=m
-CONFIG_USB_SERIAL_BELKIN=m
-CONFIG_USB_SERIAL_CH341=m
-CONFIG_USB_SERIAL_WHITEHEAT=m
-CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
-CONFIG_USB_SERIAL_CP210X=m
-CONFIG_USB_SERIAL_CYPRESS_M8=m
-CONFIG_USB_SERIAL_EMPEG=m
-CONFIG_USB_SERIAL_FTDI_SIO=m
-CONFIG_USB_SERIAL_VISOR=m
-CONFIG_USB_SERIAL_IPAQ=m
-CONFIG_USB_SERIAL_IR=m
-CONFIG_USB_SERIAL_EDGEPORT=m
-CONFIG_USB_SERIAL_EDGEPORT_TI=m
-# CONFIG_USB_SERIAL_F81232 is not set
-# CONFIG_USB_SERIAL_F8153X is not set
-CONFIG_USB_SERIAL_GARMIN=m
-CONFIG_USB_SERIAL_IPW=m
-CONFIG_USB_SERIAL_IUU=m
-CONFIG_USB_SERIAL_KEYSPAN_PDA=m
-CONFIG_USB_SERIAL_KEYSPAN=m
-CONFIG_USB_SERIAL_KLSI=m
-CONFIG_USB_SERIAL_KOBIL_SCT=m
-CONFIG_USB_SERIAL_MCT_U232=m
-# CONFIG_USB_SERIAL_METRO is not set
-CONFIG_USB_SERIAL_MOS7720=m
-CONFIG_USB_SERIAL_MOS7715_PARPORT=y
-CONFIG_USB_SERIAL_MOS7840=m
-CONFIG_USB_SERIAL_MXUPORT=m
-CONFIG_USB_SERIAL_NAVMAN=m
-CONFIG_USB_SERIAL_PL2303=m
-CONFIG_USB_SERIAL_OTI6858=m
-CONFIG_USB_SERIAL_QCAUX=m
-CONFIG_USB_SERIAL_QUALCOMM=m
-CONFIG_USB_SERIAL_SPCP8X5=m
-CONFIG_USB_SERIAL_SAFE=m
-CONFIG_USB_SERIAL_SAFE_PADDED=y
-CONFIG_USB_SERIAL_SIERRAWIRELESS=m
-CONFIG_USB_SERIAL_SYMBOL=m
-CONFIG_USB_SERIAL_TI=m
-CONFIG_USB_SERIAL_CYBERJACK=m
-CONFIG_USB_SERIAL_XIRCOM=m
-CONFIG_USB_SERIAL_WWAN=m
-CONFIG_USB_SERIAL_OPTION=m
-CONFIG_USB_SERIAL_OMNINET=m
-CONFIG_USB_SERIAL_OPTICON=m
-CONFIG_USB_SERIAL_XSENS_MT=m
-CONFIG_USB_SERIAL_WISHBONE=m
-CONFIG_USB_SERIAL_SSU100=m
-CONFIG_USB_SERIAL_QT2=m
-# CONFIG_USB_SERIAL_UPD78F0730 is not set
-CONFIG_USB_SERIAL_DEBUG=m
-
-#
-# USB Miscellaneous drivers
-#
-CONFIG_USB_EMI62=m
-CONFIG_USB_EMI26=m
-CONFIG_USB_ADUTUX=m
-CONFIG_USB_SEVSEG=m
-# CONFIG_USB_RIO500 is not set
-CONFIG_USB_LEGOTOWER=m
-CONFIG_USB_LCD=m
-# CONFIG_USB_CYPRESS_CY7C63 is not set
-# CONFIG_USB_CYTHERM is not set
-CONFIG_USB_IDMOUSE=m
-CONFIG_USB_FTDI_ELAN=m
-CONFIG_USB_APPLEDISPLAY=m
-CONFIG_USB_SISUSBVGA=m
-CONFIG_USB_SISUSBVGA_CON=y
-CONFIG_USB_LD=m
-CONFIG_USB_TRANCEVIBRATOR=m
-CONFIG_USB_IOWARRIOR=m
-# CONFIG_USB_TEST is not set
-# CONFIG_USB_EHSET_TEST_FIXTURE is not set
-CONFIG_USB_ISIGHTFW=m
-CONFIG_USB_YUREX=m
-CONFIG_USB_EZUSB_FX2=m
-# CONFIG_USB_HUB_USB251XB is not set
-CONFIG_USB_HSIC_USB3503=m
-CONFIG_USB_HSIC_USB4604=m
-# CONFIG_USB_LINK_LAYER_TEST is not set
-CONFIG_USB_CHAOSKEY=m
-CONFIG_USB_ATM=m
-CONFIG_USB_SPEEDTOUCH=m
-CONFIG_USB_CXACRU=m
-CONFIG_USB_UEAGLEATM=m
-CONFIG_USB_XUSBATM=m
-
-#
-# USB Physical Layer drivers
-#
-CONFIG_USB_PHY=y
-CONFIG_NOP_USB_XCEIV=y
-CONFIG_USB_GPIO_VBUS=m
-# CONFIG_TAHVO_USB is not set
-CONFIG_USB_ISP1301=m
-# CONFIG_USB_GADGET is not set
-# CONFIG_TYPEC is not set
-# CONFIG_USB_ROLE_SWITCH is not set
-# CONFIG_USB_LED_TRIG is not set
-# CONFIG_USB_ULPI_BUS is not set
-CONFIG_UWB=m
-CONFIG_UWB_HWA=m
-CONFIG_UWB_WHCI=m
-CONFIG_UWB_I1480U=m
-CONFIG_MMC=m
-CONFIG_MMC_BLOCK=m
-CONFIG_MMC_BLOCK_MINORS=8
-CONFIG_SDIO_UART=m
-# CONFIG_MMC_TEST is not set
-
-#
-# MMC/SD/SDIO Host Controller Drivers
-#
-# CONFIG_MMC_DEBUG is not set
-CONFIG_MMC_SDHCI=m
-CONFIG_MMC_SDHCI_PCI=m
-CONFIG_MMC_RICOH_MMC=y
-CONFIG_MMC_SDHCI_ACPI=m
-CONFIG_MMC_SDHCI_PLTFM=m
-# CONFIG_MMC_SDHCI_F_SDH30 is not set
-CONFIG_MMC_WBSD=m
-CONFIG_MMC_TIFM_SD=m
-CONFIG_MMC_SDRICOH_CS=m
-CONFIG_MMC_CB710=m
-CONFIG_MMC_VIA_SDMMC=m
-CONFIG_MMC_VUB300=m
-CONFIG_MMC_USHC=m
-CONFIG_MMC_USDHI6ROL0=m
-CONFIG_MMC_CQHCI=m
-# CONFIG_MMC_TOSHIBA_PCI is not set
-# CONFIG_MMC_MTK is not set
-# CONFIG_MMC_SDHCI_XENON is not set
-CONFIG_MEMSTICK=m
-# CONFIG_MEMSTICK_DEBUG is not set
-
-#
-# MemoryStick drivers
-#
-# CONFIG_MEMSTICK_UNSAFE_RESUME is not set
-CONFIG_MSPRO_BLOCK=m
-# CONFIG_MS_BLOCK is not set
-
-#
-# MemoryStick Host Controller Drivers
-#
-CONFIG_MEMSTICK_TIFM_MS=m
-CONFIG_MEMSTICK_JMICRON_38X=m
-CONFIG_MEMSTICK_R592=m
-CONFIG_NEW_LEDS=y
-CONFIG_LEDS_CLASS=y
-CONFIG_LEDS_CLASS_FLASH=m
-# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
-
-#
-# LED drivers
-#
-# CONFIG_LEDS_APU is not set
-# CONFIG_LEDS_AS3645A is not set
-CONFIG_LEDS_LM3530=m
-CONFIG_LEDS_LM3642=m
-# CONFIG_LEDS_LM3601X is not set
-# CONFIG_LEDS_MT6323 is not set
-CONFIG_LEDS_PCA9532=m
-CONFIG_LEDS_PCA9532_GPIO=y
-CONFIG_LEDS_GPIO=m
-CONFIG_LEDS_LP3944=m
-CONFIG_LEDS_LP3952=m
-CONFIG_LEDS_LP55XX_COMMON=m
-CONFIG_LEDS_LP5521=m
-CONFIG_LEDS_LP5523=m
-CONFIG_LEDS_LP5562=m
-CONFIG_LEDS_LP8501=m
-CONFIG_LEDS_CLEVO_MAIL=m
-CONFIG_LEDS_PCA955X=m
-# CONFIG_LEDS_PCA955X_GPIO is not set
-CONFIG_LEDS_PCA963X=m
-CONFIG_LEDS_PWM=m
-CONFIG_LEDS_BD2802=m
-CONFIG_LEDS_INTEL_SS4200=m
-CONFIG_LEDS_LT3593=m
-CONFIG_LEDS_TCA6507=m
-# CONFIG_LEDS_TLC591XX is not set
-CONFIG_LEDS_LM355x=m
-
-#
-# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
-#
-CONFIG_LEDS_BLINKM=m
-CONFIG_LEDS_MLXCPLD=m
-# CONFIG_LEDS_MLXREG is not set
-# CONFIG_LEDS_USER is not set
-# CONFIG_LEDS_NIC78BX is not set
-
-#
-# LED Triggers
-#
-CONFIG_LEDS_TRIGGERS=y
-CONFIG_LEDS_TRIGGER_TIMER=m
-CONFIG_LEDS_TRIGGER_ONESHOT=y
-# CONFIG_LEDS_TRIGGER_DISK is not set
-# CONFIG_LEDS_TRIGGER_MTD is not set
-CONFIG_LEDS_TRIGGER_HEARTBEAT=m
-CONFIG_LEDS_TRIGGER_BACKLIGHT=m
-CONFIG_LEDS_TRIGGER_CPU=y
-# CONFIG_LEDS_TRIGGER_ACTIVITY is not set
-CONFIG_LEDS_TRIGGER_GPIO=m
-CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
-
-#
-# iptables trigger is under Netfilter config (LED target)
-#
-CONFIG_LEDS_TRIGGER_TRANSIENT=m
-CONFIG_LEDS_TRIGGER_CAMERA=m
-# CONFIG_LEDS_TRIGGER_PANIC is not set
-# CONFIG_LEDS_TRIGGER_NETDEV is not set
-CONFIG_ACCESSIBILITY=y
-CONFIG_A11Y_BRAILLE_CONSOLE=y
-CONFIG_INFINIBAND=m
-CONFIG_INFINIBAND_USER_MAD=m
-CONFIG_INFINIBAND_USER_ACCESS=m
-# CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI is not set
-CONFIG_INFINIBAND_USER_MEM=y
-CONFIG_INFINIBAND_ON_DEMAND_PAGING=y
-CONFIG_INFINIBAND_ADDR_TRANS=y
-CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS=y
-CONFIG_INFINIBAND_MTHCA=m
-CONFIG_INFINIBAND_MTHCA_DEBUG=y
-CONFIG_INFINIBAND_QIB=m
-CONFIG_INFINIBAND_QIB_DCA=y
-CONFIG_INFINIBAND_CXGB3=m
-CONFIG_INFINIBAND_CXGB4=m
-# CONFIG_INFINIBAND_I40IW is not set
-CONFIG_MLX4_INFINIBAND=m
-CONFIG_INFINIBAND_NES=m
-# CONFIG_INFINIBAND_NES_DEBUG is not set
-# CONFIG_INFINIBAND_OCRDMA is not set
-# CONFIG_INFINIBAND_VMWARE_PVRDMA is not set
-CONFIG_INFINIBAND_USNIC=m
-CONFIG_INFINIBAND_IPOIB=m
-CONFIG_INFINIBAND_IPOIB_CM=y
-CONFIG_INFINIBAND_IPOIB_DEBUG=y
-CONFIG_INFINIBAND_IPOIB_DEBUG_DATA=y
-CONFIG_INFINIBAND_SRP=m
-CONFIG_INFINIBAND_SRPT=m
-CONFIG_INFINIBAND_ISER=m
-CONFIG_INFINIBAND_ISERT=m
-# CONFIG_INFINIBAND_OPA_VNIC is not set
-CONFIG_INFINIBAND_RDMAVT=m
-CONFIG_RDMA_RXE=m
-CONFIG_INFINIBAND_HFI1=m
-CONFIG_HFI1_DEBUG_SDMA_ORDER=y
-CONFIG_SDMA_VERBOSITY=y
-CONFIG_INFINIBAND_QEDR=m
-# CONFIG_INFINIBAND_BNXT_RE is not set
-CONFIG_EDAC_ATOMIC_SCRUB=y
-CONFIG_EDAC_SUPPORT=y
-CONFIG_EDAC=y
-CONFIG_EDAC_LEGACY_SYSFS=y
-# CONFIG_EDAC_DEBUG is not set
-CONFIG_EDAC_DECODE_MCE=m
-# CONFIG_EDAC_GHES is not set
-CONFIG_EDAC_AMD64=m
-# CONFIG_EDAC_AMD64_ERROR_INJECTION is not set
-CONFIG_EDAC_E752X=m
-CONFIG_EDAC_I82975X=m
-CONFIG_EDAC_I3000=m
-CONFIG_EDAC_I3200=m
-CONFIG_EDAC_IE31200=m
-CONFIG_EDAC_X38=m
-CONFIG_EDAC_I5400=m
-CONFIG_EDAC_I7CORE=m
-CONFIG_EDAC_I5000=m
-CONFIG_EDAC_I5100=m
-CONFIG_EDAC_I7300=m
-CONFIG_EDAC_SBRIDGE=m
-CONFIG_EDAC_SKX=m
-# CONFIG_EDAC_PND2 is not set
-CONFIG_RTC_LIB=y
-CONFIG_RTC_MC146818_LIB=y
-CONFIG_RTC_CLASS=y
-CONFIG_RTC_HCTOSYS=y
-CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-CONFIG_RTC_SYSTOHC=y
-CONFIG_RTC_SYSTOHC_DEVICE="rtc0"
-# CONFIG_RTC_DEBUG is not set
-CONFIG_RTC_NVMEM=y
-
-#
-# RTC interfaces
-#
-CONFIG_RTC_INTF_SYSFS=y
-CONFIG_RTC_INTF_PROC=y
-CONFIG_RTC_INTF_DEV=y
-# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-# CONFIG_RTC_DRV_TEST is not set
-
-#
-# I2C RTC drivers
-#
-CONFIG_RTC_DRV_ABB5ZES3=m
-CONFIG_RTC_DRV_ABX80X=m
-CONFIG_RTC_DRV_DS1307=m
-# CONFIG_RTC_DRV_DS1307_CENTURY is not set
-CONFIG_RTC_DRV_DS1374=m
-# CONFIG_RTC_DRV_DS1374_WDT is not set
-CONFIG_RTC_DRV_DS1672=m
-CONFIG_RTC_DRV_MAX6900=m
-CONFIG_RTC_DRV_RS5C372=m
-CONFIG_RTC_DRV_ISL1208=m
-CONFIG_RTC_DRV_ISL12022=m
-CONFIG_RTC_DRV_X1205=m
-CONFIG_RTC_DRV_PCF8523=m
-CONFIG_RTC_DRV_PCF85063=m
-# CONFIG_RTC_DRV_PCF85363 is not set
-CONFIG_RTC_DRV_PCF8563=m
-CONFIG_RTC_DRV_PCF8583=m
-CONFIG_RTC_DRV_M41T80=m
-CONFIG_RTC_DRV_M41T80_WDT=y
-CONFIG_RTC_DRV_BQ32K=m
-# CONFIG_RTC_DRV_S35390A is not set
-CONFIG_RTC_DRV_FM3130=m
-# CONFIG_RTC_DRV_RX8010 is not set
-CONFIG_RTC_DRV_RX8581=m
-CONFIG_RTC_DRV_RX8025=m
-CONFIG_RTC_DRV_EM3027=m
-CONFIG_RTC_DRV_RV8803=m
-
-#
-# SPI RTC drivers
-#
-CONFIG_RTC_I2C_AND_SPI=m
-
-#
-# SPI and I2C RTC drivers
-#
-CONFIG_RTC_DRV_DS3232=m
-CONFIG_RTC_DRV_DS3232_HWMON=y
-# CONFIG_RTC_DRV_PCF2127 is not set
-CONFIG_RTC_DRV_RV3029C2=m
-CONFIG_RTC_DRV_RV3029_HWMON=y
-
-#
-# Platform RTC drivers
-#
-CONFIG_RTC_DRV_CMOS=y
-CONFIG_RTC_DRV_DS1286=m
-CONFIG_RTC_DRV_DS1511=m
-CONFIG_RTC_DRV_DS1553=m
-CONFIG_RTC_DRV_DS1685_FAMILY=m
-CONFIG_RTC_DRV_DS1685=y
-# CONFIG_RTC_DRV_DS1689 is not set
-# CONFIG_RTC_DRV_DS17285 is not set
-# CONFIG_RTC_DRV_DS17485 is not set
-# CONFIG_RTC_DRV_DS17885 is not set
-CONFIG_RTC_DS1685_PROC_REGS=y
-CONFIG_RTC_DRV_DS1742=m
-CONFIG_RTC_DRV_DS2404=m
-CONFIG_RTC_DRV_STK17TA8=m
-# CONFIG_RTC_DRV_M48T86 is not set
-CONFIG_RTC_DRV_M48T35=m
-CONFIG_RTC_DRV_M48T59=m
-CONFIG_RTC_DRV_MSM6242=m
-CONFIG_RTC_DRV_BQ4802=m
-CONFIG_RTC_DRV_RP5C01=m
-CONFIG_RTC_DRV_V3020=m
-# CONFIG_RTC_DRV_CROS_EC is not set
-
-#
-# on-CPU RTC drivers
-#
-# CONFIG_RTC_DRV_FTRTC010 is not set
-# CONFIG_RTC_DRV_MT6397 is not set
-
-#
-# HID Sensor RTC drivers
-#
-# CONFIG_RTC_DRV_HID_SENSOR_TIME is not set
-CONFIG_DMADEVICES=y
-# CONFIG_DMADEVICES_DEBUG is not set
-
-#
-# DMA Devices
-#
-CONFIG_DMA_ENGINE=y
-CONFIG_DMA_VIRTUAL_CHANNELS=y
-CONFIG_DMA_ACPI=y
-# CONFIG_ALTERA_MSGDMA is not set
-CONFIG_INTEL_IDMA64=m
-CONFIG_INTEL_IOATDMA=m
-CONFIG_INTEL_MIC_X100_DMA=m
-# CONFIG_QCOM_HIDMA_MGMT is not set
-# CONFIG_QCOM_HIDMA is not set
-CONFIG_DW_DMAC_CORE=y
-# CONFIG_DW_DMAC is not set
-# CONFIG_DW_DMAC_PCI is not set
-CONFIG_HSU_DMA=y
-
-#
-# DMA Clients
-#
-CONFIG_ASYNC_TX_DMA=y
-# CONFIG_DMATEST is not set
-CONFIG_DMA_ENGINE_RAID=y
-
-#
-# DMABUF options
-#
-CONFIG_SYNC_FILE=y
-# CONFIG_SW_SYNC is not set
-CONFIG_DCA=m
-CONFIG_AUXDISPLAY=y
-# CONFIG_HD44780 is not set
-CONFIG_KS0108=m
-CONFIG_KS0108_PORT=0x378
-CONFIG_KS0108_DELAY=2
-CONFIG_CFAG12864B=m
-CONFIG_CFAG12864B_RATE=20
-# CONFIG_IMG_ASCII_LCD is not set
-# CONFIG_PANEL is not set
-CONFIG_UIO=m
-CONFIG_UIO_CIF=m
-# CONFIG_UIO_PDRV_GENIRQ is not set
-CONFIG_UIO_DMEM_GENIRQ=m
-CONFIG_UIO_AEC=m
-CONFIG_UIO_SERCOS3=m
-CONFIG_UIO_PCI_GENERIC=m
-# CONFIG_UIO_NETX is not set
-# CONFIG_UIO_PRUSS is not set
-# CONFIG_UIO_MF624 is not set
-# CONFIG_UIO_HV_GENERIC is not set
-CONFIG_VFIO_IOMMU_TYPE1=y
-CONFIG_VFIO_VIRQFD=y
-CONFIG_VFIO=y
-# CONFIG_VFIO_NOIOMMU is not set
-CONFIG_VFIO_PCI=y
-CONFIG_VFIO_PCI_VGA=y
-CONFIG_VFIO_PCI_MMAP=y
-CONFIG_VFIO_PCI_INTX=y
-CONFIG_VFIO_PCI_IGD=y
-# CONFIG_VFIO_MDEV is not set
-CONFIG_IRQ_BYPASS_MANAGER=y
-# CONFIG_VIRT_DRIVERS is not set
-CONFIG_VIRTIO=y
-CONFIG_VIRTIO_MENU=y
-CONFIG_VIRTIO_PCI=y
-CONFIG_VIRTIO_PCI_LEGACY=y
-CONFIG_VIRTIO_BALLOON=m
-CONFIG_VIRTIO_INPUT=m
-CONFIG_VIRTIO_MMIO=m
-# CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set
-
-#
-# Microsoft Hyper-V guest support
-#
-CONFIG_HYPERV=m
-CONFIG_HYPERV_TSCPAGE=y
-CONFIG_HYPERV_UTILS=m
-CONFIG_HYPERV_BALLOON=m
-
-#
-# Xen driver support
-#
-CONFIG_XEN_BALLOON=y
-CONFIG_XEN_SELFBALLOONING=y
-# CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set
-CONFIG_XEN_SCRUB_PAGES_DEFAULT=y
-CONFIG_XEN_DEV_EVTCHN=m
-CONFIG_XEN_BACKEND=y
-CONFIG_XENFS=m
-CONFIG_XEN_COMPAT_XENFS=y
-CONFIG_XEN_SYS_HYPERVISOR=y
-CONFIG_XEN_XENBUS_FRONTEND=y
-CONFIG_XEN_GNTDEV=m
-CONFIG_XEN_GRANT_DEV_ALLOC=m
-# CONFIG_XEN_GRANT_DMA_ALLOC is not set
-CONFIG_SWIOTLB_XEN=y
-CONFIG_XEN_TMEM=m
-CONFIG_XEN_PCIDEV_BACKEND=m
-# CONFIG_XEN_PVCALLS_FRONTEND is not set
-# CONFIG_XEN_PVCALLS_BACKEND is not set
-# CONFIG_XEN_SCSI_BACKEND is not set
-CONFIG_XEN_PRIVCMD=m
-CONFIG_XEN_ACPI_PROCESSOR=m
-CONFIG_XEN_MCE_LOG=y
-CONFIG_XEN_HAVE_PVMMU=y
-CONFIG_XEN_EFI=y
-CONFIG_XEN_AUTO_XLATE=y
-CONFIG_XEN_ACPI=y
-CONFIG_XEN_SYMS=y
-CONFIG_XEN_HAVE_VPMU=y
-CONFIG_STAGING=y
-# CONFIG_PRISM2_USB is not set
-# CONFIG_COMEDI is not set
-# CONFIG_RTL8192U is not set
-# CONFIG_RTLLIB is not set
-# CONFIG_RTL8723BS is not set
-CONFIG_R8712U=m
-CONFIG_R8188EU=m
-CONFIG_88EU_AP_MODE=y
-# CONFIG_R8822BE is not set
-CONFIG_RTS5208=m
-# CONFIG_VT6655 is not set
-# CONFIG_VT6656 is not set
-CONFIG_FB_SM750=m
-# CONFIG_FB_XGI is not set
-
-#
-# Speakup console speech
-#
-# CONFIG_SPEAKUP is not set
-CONFIG_STAGING_MEDIA=y
-CONFIG_I2C_BCM2048=m
-CONFIG_VIDEO_ZORAN=m
-CONFIG_VIDEO_ZORAN_DC30=m
-CONFIG_VIDEO_ZORAN_ZR36060=m
-CONFIG_VIDEO_ZORAN_BUZ=m
-CONFIG_VIDEO_ZORAN_DC10=m
-CONFIG_VIDEO_ZORAN_LML33=m
-CONFIG_VIDEO_ZORAN_LML33R10=m
-CONFIG_VIDEO_ZORAN_AVS6EYES=m
-
-#
-# Android
-#
-# CONFIG_ASHMEM is not set
-# CONFIG_ANDROID_VSOC is not set
-# CONFIG_ION is not set
-CONFIG_LTE_GDM724X=m
-CONFIG_FIREWIRE_SERIAL=m
-CONFIG_FWTTY_MAX_TOTAL_PORTS=64
-CONFIG_FWTTY_MAX_CARD_PORTS=32
-CONFIG_DGNC=m
-# CONFIG_GS_FPGABOOT is not set
-CONFIG_UNISYSSPAR=y
-# CONFIG_WILC1000_SDIO is not set
-CONFIG_MOST=m
-# CONFIG_MOST_CDEV is not set
-# CONFIG_MOST_NET is not set
-# CONFIG_MOST_SOUND is not set
-# CONFIG_MOST_VIDEO is not set
-# CONFIG_MOST_I2C is not set
-# CONFIG_MOST_USB is not set
-CONFIG_KS7010=m
-CONFIG_GREYBUS=m
-CONFIG_GREYBUS_ES2=m
-CONFIG_GREYBUS_AUDIO=m
-CONFIG_GREYBUS_BOOTROM=m
-CONFIG_GREYBUS_HID=m
-CONFIG_GREYBUS_LIGHT=m
-CONFIG_GREYBUS_LOG=m
-CONFIG_GREYBUS_LOOPBACK=m
-CONFIG_GREYBUS_POWER=m
-CONFIG_GREYBUS_RAW=m
-CONFIG_GREYBUS_VIBRATOR=m
-CONFIG_GREYBUS_BRIDGED_PHY=m
-CONFIG_GREYBUS_GPIO=m
-CONFIG_GREYBUS_I2C=m
-CONFIG_GREYBUS_PWM=m
-CONFIG_GREYBUS_SDIO=m
-CONFIG_GREYBUS_UART=m
-CONFIG_GREYBUS_USB=m
-# CONFIG_DRM_VBOXVIDEO is not set
-# CONFIG_MTK_MMC is not set
-
-#
-# Gasket devices
-#
-# CONFIG_STAGING_GASKET_FRAMEWORK is not set
-# CONFIG_EROFS_FS is not set
-CONFIG_X86_PLATFORM_DEVICES=y
-CONFIG_ACER_WMI=m
-# CONFIG_ACER_WIRELESS is not set
-CONFIG_ACERHDF=m
-CONFIG_ALIENWARE_WMI=m
-CONFIG_ASUS_LAPTOP=m
-# CONFIG_DELL_SMBIOS is not set
-CONFIG_DELL_WMI_AIO=m
-# CONFIG_DELL_WMI_LED is not set
-CONFIG_DELL_SMO8800=m
-# CONFIG_DELL_RBTN is not set
-CONFIG_FUJITSU_LAPTOP=m
-CONFIG_FUJITSU_TABLET=m
-CONFIG_AMILO_RFKILL=m
-# CONFIG_GPD_POCKET_FAN is not set
-CONFIG_HP_ACCEL=m
-CONFIG_HP_WIRELESS=m
-CONFIG_HP_WMI=m
-CONFIG_MSI_LAPTOP=m
-CONFIG_PANASONIC_LAPTOP=m
-CONFIG_COMPAL_LAPTOP=m
-CONFIG_SONY_LAPTOP=m
-CONFIG_SONYPI_COMPAT=y
-CONFIG_IDEAPAD_LAPTOP=m
-CONFIG_THINKPAD_ACPI=m
-CONFIG_THINKPAD_ACPI_ALSA_SUPPORT=y
-# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
-# CONFIG_THINKPAD_ACPI_DEBUG is not set
-# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
-CONFIG_THINKPAD_ACPI_VIDEO=y
-CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
-CONFIG_SENSORS_HDAPS=m
-CONFIG_INTEL_MENLOW=m
-CONFIG_EEEPC_LAPTOP=m
-CONFIG_ASUS_WMI=m
-CONFIG_ASUS_NB_WMI=m
-CONFIG_EEEPC_WMI=m
-# CONFIG_ASUS_WIRELESS is not set
-CONFIG_ACPI_WMI=m
-CONFIG_WMI_BMOF=m
-# CONFIG_INTEL_WMI_THUNDERBOLT is not set
-CONFIG_MSI_WMI=m
-# CONFIG_PEAQ_WMI is not set
-CONFIG_TOPSTAR_LAPTOP=m
-CONFIG_TOSHIBA_BT_RFKILL=m
-CONFIG_TOSHIBA_HAPS=m
-CONFIG_TOSHIBA_WMI=m
-CONFIG_ACPI_CMPC=m
-# CONFIG_INTEL_INT0002_VGPIO is not set
-# CONFIG_INTEL_HID_EVENT is not set
-CONFIG_INTEL_VBTN=m
-CONFIG_INTEL_IPS=m
-# CONFIG_INTEL_PMC_CORE is not set
-# CONFIG_IBM_RTL is not set
-CONFIG_SAMSUNG_LAPTOP=m
-CONFIG_MXM_WMI=m
-CONFIG_INTEL_OAKTRAIL=m
-CONFIG_SAMSUNG_Q10=m
-CONFIG_APPLE_GMUX=m
-CONFIG_INTEL_RST=m
-# CONFIG_INTEL_SMARTCONNECT is not set
-CONFIG_PVPANIC=m
-# CONFIG_INTEL_PMC_IPC is not set
-CONFIG_SURFACE_PRO3_BUTTON=m
-# CONFIG_SURFACE_3_BUTTON is not set
-# CONFIG_INTEL_PUNIT_IPC is not set
-# CONFIG_MLX_PLATFORM is not set
-# CONFIG_INTEL_TURBO_MAX_3 is not set
-# CONFIG_I2C_MULTI_INSTANTIATE is not set
-# CONFIG_INTEL_ATOMISP2_PM is not set
-CONFIG_PMC_ATOM=y
-CONFIG_CHROME_PLATFORMS=y
-CONFIG_CHROMEOS_LAPTOP=m
-CONFIG_CHROMEOS_PSTORE=m
-# CONFIG_CHROMEOS_TBMC is not set
-# CONFIG_CROS_EC_I2C is not set
-CONFIG_CROS_EC_LPC=m
-# CONFIG_CROS_EC_LPC_MEC is not set
-CONFIG_CROS_EC_PROTO=y
-# CONFIG_CROS_KBD_LED_BACKLIGHT is not set
-# CONFIG_MELLANOX_PLATFORM is not set
-CONFIG_CLKDEV_LOOKUP=y
-CONFIG_HAVE_CLK_PREPARE=y
-CONFIG_COMMON_CLK=y
-
-#
-# Common Clock Framework
-#
-# CONFIG_COMMON_CLK_MAX9485 is not set
-CONFIG_COMMON_CLK_SI5351=m
-# CONFIG_COMMON_CLK_SI544 is not set
-CONFIG_COMMON_CLK_CDCE706=m
-# CONFIG_COMMON_CLK_CS2000_CP is not set
-CONFIG_COMMON_CLK_PWM=m
-# CONFIG_HWSPINLOCK is not set
-
-#
-# Clock Source drivers
-#
-CONFIG_CLKEVT_I8253=y
-CONFIG_I8253_LOCK=y
-CONFIG_CLKBLD_I8253=y
-CONFIG_MAILBOX=y
-CONFIG_PCC=y
-CONFIG_ALTERA_MBOX=m
-CONFIG_IOMMU_API=y
-CONFIG_IOMMU_SUPPORT=y
-
-#
-# Generic IOMMU Pagetable Support
-#
-# CONFIG_IOMMU_DEBUGFS is not set
-# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
-CONFIG_IOMMU_IOVA=y
-CONFIG_AMD_IOMMU=y
-CONFIG_AMD_IOMMU_V2=m
-CONFIG_DMAR_TABLE=y
-CONFIG_INTEL_IOMMU=y
-# CONFIG_INTEL_IOMMU_SVM is not set
-# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
-CONFIG_INTEL_IOMMU_FLOPPY_WA=y
-CONFIG_IRQ_REMAP=y
-
-#
-# Remoteproc drivers
-#
-CONFIG_REMOTEPROC=m
-
-#
-# Rpmsg drivers
-#
-# CONFIG_RPMSG_QCOM_GLINK_RPM is not set
-# CONFIG_RPMSG_VIRTIO is not set
-# CONFIG_SOUNDWIRE is not set
-
-#
-# SOC (System On Chip) specific Drivers
-#
-
-#
-# Amlogic SoC drivers
-#
-
-#
-# Broadcom SoC drivers
-#
-
-#
-# NXP/Freescale QorIQ SoC drivers
-#
-
-#
-# i.MX SoC drivers
-#
-
-#
-# Qualcomm SoC drivers
-#
-# CONFIG_SOC_TI is not set
-
-#
-# Xilinx SoC drivers
-#
-# CONFIG_XILINX_VCU is not set
-CONFIG_PM_DEVFREQ=y
-
-#
-# DEVFREQ Governors
-#
-CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
-# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
-# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
-# CONFIG_DEVFREQ_GOV_USERSPACE is not set
-# CONFIG_DEVFREQ_GOV_PASSIVE is not set
-
-#
-# DEVFREQ Drivers
-#
-CONFIG_PM_DEVFREQ_EVENT=y
-CONFIG_EXTCON=y
-
-#
-# Extcon Device Drivers
-#
-# CONFIG_EXTCON_GPIO is not set
-# CONFIG_EXTCON_INTEL_INT3496 is not set
-# CONFIG_EXTCON_MAX14577 is not set
-# CONFIG_EXTCON_MAX3355 is not set
-# CONFIG_EXTCON_RT8973A is not set
-# CONFIG_EXTCON_SM5502 is not set
-# CONFIG_EXTCON_USB_GPIO is not set
-# CONFIG_EXTCON_USBC_CROS_EC is not set
-# CONFIG_MEMORY is not set
-# CONFIG_IIO is not set
-CONFIG_NTB=m
-# CONFIG_NTB_AMD is not set
-# CONFIG_NTB_IDT is not set
-# CONFIG_NTB_INTEL is not set
-# CONFIG_NTB_SWITCHTEC is not set
-# CONFIG_NTB_PINGPONG is not set
-# CONFIG_NTB_TOOL is not set
-# CONFIG_NTB_PERF is not set
-# CONFIG_NTB_TRANSPORT is not set
-# CONFIG_VME_BUS is not set
-CONFIG_PWM=y
-CONFIG_PWM_SYSFS=y
-CONFIG_PWM_CROS_EC=m
-CONFIG_PWM_LP3943=m
-# CONFIG_PWM_LPSS_PCI is not set
-# CONFIG_PWM_LPSS_PLATFORM is not set
-CONFIG_PWM_PCA9685=m
-
-#
-# IRQ chip support
-#
-CONFIG_ARM_GIC_MAX_NR=1
-# CONFIG_IPACK_BUS is not set
-CONFIG_RESET_CONTROLLER=y
-# CONFIG_RESET_TI_SYSCON is not set
-# CONFIG_FMC is not set
-
-#
-# PHY Subsystem
-#
-CONFIG_GENERIC_PHY=y
-CONFIG_BCM_KONA_USB2_PHY=m
-# CONFIG_PHY_PXA_28NM_HSIC is not set
-# CONFIG_PHY_PXA_28NM_USB2 is not set
-CONFIG_PHY_SAMSUNG_USB2=m
-CONFIG_POWERCAP=y
-CONFIG_INTEL_RAPL=m
-# CONFIG_IDLE_INJECT is not set
-# CONFIG_MCB is not set
-
-#
-# Performance monitor support
-#
-CONFIG_RAS=y
-# CONFIG_RAS_CEC is not set
-CONFIG_THUNDERBOLT=m
-
-#
-# Android
-#
-CONFIG_ANDROID=y
-CONFIG_ANDROID_BINDER_IPC=y
-CONFIG_ANDROID_BINDER_DEVICES="binder,hwbinder,vndbinder"
-# CONFIG_ANDROID_BINDER_IPC_SELFTEST is not set
-# CONFIG_LIBNVDIMM is not set
-CONFIG_DAX=y
-# CONFIG_DEV_DAX is not set
-CONFIG_NVMEM=y
-
-#
-# HW tracing support
-#
-CONFIG_STM=m
-CONFIG_STM_DUMMY=m
-CONFIG_STM_SOURCE_CONSOLE=m
-# CONFIG_STM_SOURCE_HEARTBEAT is not set
-# CONFIG_STM_SOURCE_FTRACE is not set
-CONFIG_INTEL_TH=m
-CONFIG_INTEL_TH_PCI=m
-# CONFIG_INTEL_TH_ACPI is not set
-CONFIG_INTEL_TH_GTH=m
-CONFIG_INTEL_TH_STH=m
-CONFIG_INTEL_TH_MSU=m
-CONFIG_INTEL_TH_PTI=m
-# CONFIG_INTEL_TH_DEBUG is not set
-CONFIG_FPGA=m
-# CONFIG_ALTERA_PR_IP_CORE is not set
-# CONFIG_FPGA_MGR_ALTERA_CVP is not set
-# CONFIG_FPGA_BRIDGE is not set
-# CONFIG_FPGA_DFL is not set
-CONFIG_PM_OPP=y
-# CONFIG_UNISYS_VISORBUS is not set
-# CONFIG_SIOX is not set
-# CONFIG_SLIMBUS is not set
-
-#
-# File systems
-#
-CONFIG_DCACHE_WORD_ACCESS=y
-CONFIG_FS_IOMAP=y
-CONFIG_EXT2_FS=m
-CONFIG_EXT2_FS_XATTR=y
-# CONFIG_EXT2_FS_POSIX_ACL is not set
-CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT3_FS=m
-CONFIG_EXT3_FS_POSIX_ACL=y
-CONFIG_EXT3_FS_SECURITY=y
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-CONFIG_EXT4_ENCRYPTION=y
-CONFIG_EXT4_FS_ENCRYPTION=y
-# CONFIG_EXT4_DEBUG is not set
-CONFIG_JBD2=y
-# CONFIG_JBD2_DEBUG is not set
-CONFIG_FS_MBCACHE=y
-CONFIG_REISERFS_FS=m
-# CONFIG_REISERFS_CHECK is not set
-CONFIG_REISERFS_PROC_INFO=y
-CONFIG_REISERFS_FS_XATTR=y
-CONFIG_REISERFS_FS_POSIX_ACL=y
-CONFIG_REISERFS_FS_SECURITY=y
-CONFIG_JFS_FS=m
-CONFIG_JFS_POSIX_ACL=y
-CONFIG_JFS_SECURITY=y
-# CONFIG_JFS_DEBUG is not set
-# CONFIG_JFS_STATISTICS is not set
-CONFIG_XFS_FS=m
-CONFIG_XFS_QUOTA=y
-CONFIG_XFS_POSIX_ACL=y
-# CONFIG_XFS_RT is not set
-# CONFIG_XFS_ONLINE_SCRUB is not set
-# CONFIG_XFS_WARN is not set
-# CONFIG_XFS_DEBUG is not set
-CONFIG_GFS2_FS=m
-CONFIG_GFS2_FS_LOCKING_DLM=y
-CONFIG_OCFS2_FS=m
-CONFIG_OCFS2_FS_O2CB=m
-CONFIG_OCFS2_FS_USERSPACE_CLUSTER=m
-# CONFIG_OCFS2_FS_STATS is not set
-# CONFIG_OCFS2_DEBUG_MASKLOG is not set
-# CONFIG_OCFS2_DEBUG_FS is not set
-CONFIG_BTRFS_FS=m
-CONFIG_BTRFS_FS_POSIX_ACL=y
-# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
-# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
-# CONFIG_BTRFS_DEBUG is not set
-# CONFIG_BTRFS_ASSERT is not set
-# CONFIG_BTRFS_FS_REF_VERIFY is not set
-CONFIG_NILFS2_FS=m
-CONFIG_F2FS_FS=m
-CONFIG_F2FS_STAT_FS=y
-CONFIG_F2FS_FS_XATTR=y
-CONFIG_F2FS_FS_POSIX_ACL=y
-# CONFIG_F2FS_FS_SECURITY is not set
-# CONFIG_F2FS_CHECK_FS is not set
-# CONFIG_F2FS_FS_ENCRYPTION is not set
-CONFIG_F2FS_IO_TRACE=y
-# CONFIG_F2FS_FAULT_INJECTION is not set
-CONFIG_FS_DAX=y
-CONFIG_FS_DAX_PMD=y
-CONFIG_FS_POSIX_ACL=y
-CONFIG_EXPORTFS=y
-# CONFIG_EXPORTFS_BLOCK_OPS is not set
-CONFIG_FILE_LOCKING=y
-CONFIG_MANDATORY_FILE_LOCKING=y
-CONFIG_FS_ENCRYPTION=y
-CONFIG_FSNOTIFY=y
-CONFIG_DNOTIFY=y
-CONFIG_INOTIFY_USER=y
-CONFIG_FANOTIFY=y
-CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
-CONFIG_QUOTA=y
-CONFIG_QUOTA_NETLINK_INTERFACE=y
-# CONFIG_PRINT_QUOTA_WARNING is not set
-# CONFIG_QUOTA_DEBUG is not set
-CONFIG_QUOTA_TREE=y
-# CONFIG_QFMT_V1 is not set
-CONFIG_QFMT_V2=y
-CONFIG_QUOTACTL=y
-CONFIG_QUOTACTL_COMPAT=y
-CONFIG_AUTOFS4_FS=y
-CONFIG_AUTOFS_FS=y
-CONFIG_FUSE_FS=m
-CONFIG_CUSE=m
-CONFIG_OVERLAY_FS=y
-# CONFIG_OVERLAY_FS_REDIRECT_DIR is not set
-CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y
-# CONFIG_OVERLAY_FS_INDEX is not set
-# CONFIG_OVERLAY_FS_XINO_AUTO is not set
-# CONFIG_OVERLAY_FS_METACOPY is not set
-
-#
-# Caches
-#
-CONFIG_FSCACHE=m
-CONFIG_FSCACHE_STATS=y
-# CONFIG_FSCACHE_HISTOGRAM is not set
-# CONFIG_FSCACHE_DEBUG is not set
-CONFIG_FSCACHE_OBJECT_LIST=y
-CONFIG_CACHEFILES=m
-# CONFIG_CACHEFILES_DEBUG is not set
-# CONFIG_CACHEFILES_HISTOGRAM is not set
-
-#
-# CD-ROM/DVD Filesystems
-#
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-CONFIG_UDF_FS=m
-
-#
-# DOS/FAT/NT Filesystems
-#
-CONFIG_FAT_FS=m
-CONFIG_MSDOS_FS=m
-CONFIG_VFAT_FS=m
-CONFIG_FAT_DEFAULT_CODEPAGE=437
-CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
-# CONFIG_FAT_DEFAULT_UTF8 is not set
-# CONFIG_NTFS_FS is not set
-
-#
-# Pseudo filesystems
-#
-CONFIG_PROC_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_PROC_VMCORE=y
-# CONFIG_PROC_VMCORE_DEVICE_DUMP is not set
-CONFIG_PROC_SYSCTL=y
-CONFIG_PROC_PAGE_MONITOR=y
-# CONFIG_PROC_CHILDREN is not set
-CONFIG_KERNFS=y
-CONFIG_SYSFS=y
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_TMPFS_XATTR=y
-CONFIG_HUGETLBFS=y
-CONFIG_HUGETLB_PAGE=y
-CONFIG_MEMFD_CREATE=y
-CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
-CONFIG_CONFIGFS_FS=y
-CONFIG_EFIVAR_FS=y
-CONFIG_MISC_FILESYSTEMS=y
-# CONFIG_ORANGEFS_FS is not set
-# CONFIG_ADFS_FS is not set
-CONFIG_AFFS_FS=m
-CONFIG_ECRYPT_FS=m
-CONFIG_ECRYPT_FS_MESSAGING=y
-CONFIG_HFS_FS=m
-CONFIG_HFSPLUS_FS=m
-CONFIG_BEFS_FS=m
-# CONFIG_BEFS_DEBUG is not set
-# CONFIG_BFS_FS is not set
-# CONFIG_EFS_FS is not set
-# CONFIG_JFFS2_FS is not set
-CONFIG_UBIFS_FS=m
-# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
-CONFIG_UBIFS_FS_LZO=y
-CONFIG_UBIFS_FS_ZLIB=y
-# CONFIG_UBIFS_ATIME_SUPPORT is not set
-CONFIG_UBIFS_FS_XATTR=y
-# CONFIG_UBIFS_FS_ENCRYPTION is not set
-CONFIG_UBIFS_FS_SECURITY=y
-CONFIG_CRAMFS=m
-CONFIG_CRAMFS_BLOCKDEV=y
-# CONFIG_CRAMFS_MTD is not set
-CONFIG_SQUASHFS=m
-# CONFIG_SQUASHFS_FILE_CACHE is not set
-CONFIG_SQUASHFS_FILE_DIRECT=y
-# CONFIG_SQUASHFS_DECOMP_SINGLE is not set
-# CONFIG_SQUASHFS_DECOMP_MULTI is not set
-CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
-CONFIG_SQUASHFS_XATTR=y
-CONFIG_SQUASHFS_ZLIB=y
-# CONFIG_SQUASHFS_LZ4 is not set
-CONFIG_SQUASHFS_LZO=y
-CONFIG_SQUASHFS_XZ=y
-# CONFIG_SQUASHFS_ZSTD is not set
-# CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set
-# CONFIG_SQUASHFS_EMBEDDED is not set
-CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
-# CONFIG_VXFS_FS is not set
-CONFIG_MINIX_FS=m
-# CONFIG_OMFS_FS is not set
-# CONFIG_HPFS_FS is not set
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_QNX6FS_FS is not set
-CONFIG_ROMFS_FS=m
-CONFIG_ROMFS_BACKED_BY_BLOCK=y
-# CONFIG_ROMFS_BACKED_BY_MTD is not set
-# CONFIG_ROMFS_BACKED_BY_BOTH is not set
-CONFIG_ROMFS_ON_BLOCK=y
-CONFIG_PSTORE=y
-CONFIG_PSTORE_DEFLATE_COMPRESS=y
-# CONFIG_PSTORE_LZO_COMPRESS is not set
-# CONFIG_PSTORE_LZ4_COMPRESS is not set
-# CONFIG_PSTORE_LZ4HC_COMPRESS is not set
-# CONFIG_PSTORE_842_COMPRESS is not set
-# CONFIG_PSTORE_ZSTD_COMPRESS is not set
-CONFIG_PSTORE_COMPRESS=y
-CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y
-CONFIG_PSTORE_COMPRESS_DEFAULT="deflate"
-CONFIG_PSTORE_CONSOLE=y
-CONFIG_PSTORE_PMSG=y
-CONFIG_PSTORE_FTRACE=y
-CONFIG_PSTORE_RAM=m
-CONFIG_SYSV_FS=m
-CONFIG_UFS_FS=m
-# CONFIG_UFS_FS_WRITE is not set
-# CONFIG_UFS_DEBUG is not set
-# CONFIG_EXOFS_FS is not set
-CONFIG_AUFS_FS=y
-# CONFIG_AUFS_BRANCH_MAX_127 is not set
-# CONFIG_AUFS_BRANCH_MAX_511 is not set
-# CONFIG_AUFS_BRANCH_MAX_1023 is not set
-CONFIG_AUFS_BRANCH_MAX_32767=y
-CONFIG_AUFS_SBILIST=y
-CONFIG_AUFS_HNOTIFY=y
-CONFIG_AUFS_HFSNOTIFY=y
-CONFIG_AUFS_EXPORT=y
-CONFIG_AUFS_INO_T_64=y
-CONFIG_AUFS_XATTR=y
-CONFIG_AUFS_FHSM=y
-CONFIG_AUFS_RDU=y
-# CONFIG_AUFS_DIRREN is not set
-CONFIG_AUFS_SHWH=y
-CONFIG_AUFS_BR_RAMFS=y
-CONFIG_AUFS_BR_FUSE=y
-CONFIG_AUFS_POLL=y
-CONFIG_AUFS_BR_HFSPLUS=y
-CONFIG_AUFS_BDEV_LOOP=y
-CONFIG_AUFS_DEBUG=y
-CONFIG_AUFS_MAGIC_SYSRQ=y
-CONFIG_NETWORK_FILESYSTEMS=y
-CONFIG_NFS_FS=m
-CONFIG_NFS_V2=m
-CONFIG_NFS_V3=m
-CONFIG_NFS_V3_ACL=y
-CONFIG_NFS_V4=m
-CONFIG_NFS_SWAP=y
-CONFIG_NFS_V4_1=y
-# CONFIG_NFS_V4_2 is not set
-CONFIG_PNFS_FILE_LAYOUT=m
-CONFIG_PNFS_BLOCK=m
-CONFIG_PNFS_FLEXFILE_LAYOUT=m
-CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN="kernel.org"
-# CONFIG_NFS_V4_1_MIGRATION is not set
-CONFIG_NFS_FSCACHE=y
-# CONFIG_NFS_USE_LEGACY_DNS is not set
-CONFIG_NFS_USE_KERNEL_DNS=y
-CONFIG_NFS_DEBUG=y
-CONFIG_NFSD=m
-CONFIG_NFSD_V2_ACL=y
-CONFIG_NFSD_V3=y
-CONFIG_NFSD_V3_ACL=y
-CONFIG_NFSD_V4=y
-# CONFIG_NFSD_BLOCKLAYOUT is not set
-# CONFIG_NFSD_SCSILAYOUT is not set
-# CONFIG_NFSD_FLEXFILELAYOUT is not set
-# CONFIG_NFSD_V4_SECURITY_LABEL is not set
-CONFIG_GRACE_PERIOD=m
-CONFIG_LOCKD=m
-CONFIG_LOCKD_V4=y
-CONFIG_NFS_ACL_SUPPORT=m
-CONFIG_NFS_COMMON=y
-CONFIG_SUNRPC=m
-CONFIG_SUNRPC_GSS=m
-CONFIG_SUNRPC_BACKCHANNEL=y
-CONFIG_SUNRPC_SWAP=y
-CONFIG_RPCSEC_GSS_KRB5=m
-CONFIG_SUNRPC_DEBUG=y
-CONFIG_SUNRPC_XPRT_RDMA=m
-CONFIG_CEPH_FS=m
-# CONFIG_CEPH_FSCACHE is not set
-CONFIG_CEPH_FS_POSIX_ACL=y
-CONFIG_CIFS=m
-# CONFIG_CIFS_STATS2 is not set
-CONFIG_CIFS_ALLOW_INSECURE_LEGACY=y
-CONFIG_CIFS_WEAK_PW_HASH=y
-CONFIG_CIFS_UPCALL=y
-CONFIG_CIFS_XATTR=y
-# CONFIG_CIFS_POSIX is not set
-CONFIG_CIFS_ACL=y
-# CONFIG_CIFS_DEBUG is not set
-CONFIG_CIFS_DFS_UPCALL=y
-# CONFIG_CIFS_SMB_DIRECT is not set
-CONFIG_CIFS_FSCACHE=y
-CONFIG_CODA_FS=m
-# CONFIG_AFS_FS is not set
-CONFIG_9P_FS=m
-CONFIG_9P_FSCACHE=y
-CONFIG_9P_FS_POSIX_ACL=y
-# CONFIG_9P_FS_SECURITY is not set
-CONFIG_NLS=y
-CONFIG_NLS_DEFAULT="utf8"
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_CODEPAGE_737=m
-CONFIG_NLS_CODEPAGE_775=m
-CONFIG_NLS_CODEPAGE_850=m
-CONFIG_NLS_CODEPAGE_852=m
-CONFIG_NLS_CODEPAGE_855=m
-CONFIG_NLS_CODEPAGE_857=m
-CONFIG_NLS_CODEPAGE_860=m
-CONFIG_NLS_CODEPAGE_861=m
-CONFIG_NLS_CODEPAGE_862=m
-CONFIG_NLS_CODEPAGE_863=m
-CONFIG_NLS_CODEPAGE_864=m
-CONFIG_NLS_CODEPAGE_865=m
-CONFIG_NLS_CODEPAGE_866=m
-CONFIG_NLS_CODEPAGE_869=m
-CONFIG_NLS_CODEPAGE_936=m
-CONFIG_NLS_CODEPAGE_950=m
-CONFIG_NLS_CODEPAGE_932=m
-CONFIG_NLS_CODEPAGE_949=m
-CONFIG_NLS_CODEPAGE_874=m
-CONFIG_NLS_ISO8859_8=m
-CONFIG_NLS_CODEPAGE_1250=m
-CONFIG_NLS_CODEPAGE_1251=m
-CONFIG_NLS_ASCII=y
-CONFIG_NLS_ISO8859_1=m
-CONFIG_NLS_ISO8859_2=m
-CONFIG_NLS_ISO8859_3=m
-CONFIG_NLS_ISO8859_4=m
-CONFIG_NLS_ISO8859_5=m
-CONFIG_NLS_ISO8859_6=m
-CONFIG_NLS_ISO8859_7=m
-CONFIG_NLS_ISO8859_9=m
-CONFIG_NLS_ISO8859_13=m
-CONFIG_NLS_ISO8859_14=m
-CONFIG_NLS_ISO8859_15=m
-CONFIG_NLS_KOI8_R=m
-CONFIG_NLS_KOI8_U=m
-CONFIG_NLS_MAC_ROMAN=m
-CONFIG_NLS_MAC_CELTIC=m
-CONFIG_NLS_MAC_CENTEURO=m
-CONFIG_NLS_MAC_CROATIAN=m
-CONFIG_NLS_MAC_CYRILLIC=m
-CONFIG_NLS_MAC_GAELIC=m
-CONFIG_NLS_MAC_GREEK=m
-CONFIG_NLS_MAC_ICELAND=m
-CONFIG_NLS_MAC_INUIT=m
-CONFIG_NLS_MAC_ROMANIAN=m
-CONFIG_NLS_MAC_TURKISH=m
-CONFIG_NLS_UTF8=m
-CONFIG_DLM=m
-CONFIG_DLM_DEBUG=y
-
-#
-# Security options
-#
-CONFIG_KEYS=y
-CONFIG_KEYS_COMPAT=y
-# CONFIG_PERSISTENT_KEYRINGS is not set
-# CONFIG_BIG_KEYS is not set
-CONFIG_TRUSTED_KEYS=m
-CONFIG_ENCRYPTED_KEYS=y
-# CONFIG_KEY_DH_OPERATIONS is not set
-# CONFIG_SECURITY_DMESG_RESTRICT is not set
-CONFIG_SECURITY=y
-CONFIG_SECURITYFS=y
-CONFIG_SECURITY_NETWORK=y
-CONFIG_PAGE_TABLE_ISOLATION=y
-# CONFIG_SECURITY_INFINIBAND is not set
-CONFIG_SECURITY_NETWORK_XFRM=y
-CONFIG_SECURITY_PATH=y
-CONFIG_INTEL_TXT=y
-CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
-# CONFIG_HARDENED_USERCOPY is not set
-# CONFIG_FORTIFY_SOURCE is not set
-# CONFIG_STATIC_USERMODEHELPER is not set
-# CONFIG_SECURITY_SELINUX is not set
-# CONFIG_SECURITY_SMACK is not set
-# CONFIG_SECURITY_TOMOYO is not set
-CONFIG_SECURITY_APPARMOR=y
-CONFIG_SECURITY_APPARMOR_BOOTPARAM_VALUE=1
-CONFIG_SECURITY_APPARMOR_HASH=y
-CONFIG_SECURITY_APPARMOR_HASH_DEFAULT=y
-# CONFIG_SECURITY_APPARMOR_DEBUG is not set
-# CONFIG_SECURITY_LOADPIN is not set
-# CONFIG_SECURITY_YAMA is not set
-CONFIG_INTEGRITY=y
-# CONFIG_INTEGRITY_SIGNATURE is not set
-CONFIG_INTEGRITY_AUDIT=y
-# CONFIG_IMA is not set
-# CONFIG_EVM is not set
-CONFIG_DEFAULT_SECURITY_APPARMOR=y
-# CONFIG_DEFAULT_SECURITY_DAC is not set
-CONFIG_DEFAULT_SECURITY="apparmor"
-CONFIG_XOR_BLOCKS=m
-CONFIG_ASYNC_CORE=m
-CONFIG_ASYNC_MEMCPY=m
-CONFIG_ASYNC_XOR=m
-CONFIG_ASYNC_PQ=m
-CONFIG_ASYNC_RAID6_RECOV=m
-CONFIG_CRYPTO=y
-
-#
-# Crypto core or helper
-#
-CONFIG_CRYPTO_ALGAPI=y
-CONFIG_CRYPTO_ALGAPI2=y
-CONFIG_CRYPTO_AEAD=y
-CONFIG_CRYPTO_AEAD2=y
-CONFIG_CRYPTO_BLKCIPHER=y
-CONFIG_CRYPTO_BLKCIPHER2=y
-CONFIG_CRYPTO_HASH=y
-CONFIG_CRYPTO_HASH2=y
-CONFIG_CRYPTO_RNG=y
-CONFIG_CRYPTO_RNG2=y
-CONFIG_CRYPTO_RNG_DEFAULT=y
-CONFIG_CRYPTO_AKCIPHER2=y
-CONFIG_CRYPTO_AKCIPHER=y
-CONFIG_CRYPTO_KPP2=y
-CONFIG_CRYPTO_KPP=m
-CONFIG_CRYPTO_ACOMP2=y
-CONFIG_CRYPTO_RSA=y
-CONFIG_CRYPTO_DH=m
-CONFIG_CRYPTO_ECDH=m
-CONFIG_CRYPTO_MANAGER=y
-CONFIG_CRYPTO_MANAGER2=y
-CONFIG_CRYPTO_USER=m
-# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
-CONFIG_CRYPTO_GF128MUL=y
-CONFIG_CRYPTO_NULL=y
-CONFIG_CRYPTO_NULL2=y
-CONFIG_CRYPTO_PCRYPT=m
-CONFIG_CRYPTO_WORKQUEUE=y
-CONFIG_CRYPTO_CRYPTD=y
-CONFIG_CRYPTO_MCRYPTD=m
-CONFIG_CRYPTO_AUTHENC=m
-CONFIG_CRYPTO_TEST=m
-CONFIG_CRYPTO_SIMD=m
-CONFIG_CRYPTO_GLUE_HELPER_X86=m
-CONFIG_CRYPTO_ENGINE=m
-
-#
-# Authenticated Encryption with Associated Data
-#
-CONFIG_CRYPTO_CCM=m
-CONFIG_CRYPTO_GCM=m
-# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
-# CONFIG_CRYPTO_AEGIS128 is not set
-# CONFIG_CRYPTO_AEGIS128L is not set
-# CONFIG_CRYPTO_AEGIS256 is not set
-# CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set
-# CONFIG_CRYPTO_AEGIS128L_AESNI_SSE2 is not set
-# CONFIG_CRYPTO_AEGIS256_AESNI_SSE2 is not set
-# CONFIG_CRYPTO_MORUS640 is not set
-# CONFIG_CRYPTO_MORUS640_SSE2 is not set
-# CONFIG_CRYPTO_MORUS1280 is not set
-# CONFIG_CRYPTO_MORUS1280_SSE2 is not set
-# CONFIG_CRYPTO_MORUS1280_AVX2 is not set
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_ECHAINIV=m
-
-#
-# Block modes
-#
-CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_CFB is not set
-CONFIG_CRYPTO_CTR=y
-CONFIG_CRYPTO_CTS=y
-CONFIG_CRYPTO_ECB=y
-CONFIG_CRYPTO_LRW=y
-CONFIG_CRYPTO_PCBC=m
-CONFIG_CRYPTO_XTS=y
-CONFIG_CRYPTO_KEYWRAP=m
-
-#
-# Hash modes
-#
-CONFIG_CRYPTO_CMAC=m
-CONFIG_CRYPTO_HMAC=y
-CONFIG_CRYPTO_XCBC=m
-CONFIG_CRYPTO_VMAC=m
-
-#
-# Digest
-#
-CONFIG_CRYPTO_CRC32C=y
-CONFIG_CRYPTO_CRC32C_INTEL=m
-CONFIG_CRYPTO_CRC32=y
-CONFIG_CRYPTO_CRC32_PCLMUL=m
-CONFIG_CRYPTO_CRCT10DIF=y
-# CONFIG_CRYPTO_CRCT10DIF_PCLMUL is not set
-CONFIG_CRYPTO_GHASH=m
-CONFIG_CRYPTO_POLY1305=m
-CONFIG_CRYPTO_POLY1305_X86_64=m
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_RMD128=m
-CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_RMD256=m
-CONFIG_CRYPTO_RMD320=m
-CONFIG_CRYPTO_SHA1=y
-CONFIG_CRYPTO_SHA1_SSSE3=m
-CONFIG_CRYPTO_SHA256_SSSE3=m
-CONFIG_CRYPTO_SHA512_SSSE3=m
-# CONFIG_CRYPTO_SHA1_MB is not set
-CONFIG_CRYPTO_SHA256_MB=m
-CONFIG_CRYPTO_SHA512_MB=m
-CONFIG_CRYPTO_SHA256=y
-CONFIG_CRYPTO_SHA512=m
-CONFIG_CRYPTO_SHA3=m
-# CONFIG_CRYPTO_SM3 is not set
-CONFIG_CRYPTO_TGR192=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=m
-
-#
-# Ciphers
-#
-CONFIG_CRYPTO_AES=y
-# CONFIG_CRYPTO_AES_TI is not set
-CONFIG_CRYPTO_AES_X86_64=m
-CONFIG_CRYPTO_AES_NI_INTEL=m
-CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
-CONFIG_CRYPTO_BLOWFISH=m
-CONFIG_CRYPTO_BLOWFISH_COMMON=m
-CONFIG_CRYPTO_BLOWFISH_X86_64=m
-CONFIG_CRYPTO_CAMELLIA=m
-CONFIG_CRYPTO_CAMELLIA_X86_64=m
-CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=m
-CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=m
-CONFIG_CRYPTO_CAST_COMMON=m
-CONFIG_CRYPTO_CAST5=m
-CONFIG_CRYPTO_CAST5_AVX_X86_64=m
-CONFIG_CRYPTO_CAST6=m
-CONFIG_CRYPTO_CAST6_AVX_X86_64=m
-CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_DES3_EDE_X86_64=m
-CONFIG_CRYPTO_FCRYPT=m
-CONFIG_CRYPTO_KHAZAD=m
-CONFIG_CRYPTO_SALSA20=m
-CONFIG_CRYPTO_CHACHA20=m
-CONFIG_CRYPTO_CHACHA20_X86_64=m
-CONFIG_CRYPTO_SEED=m
-CONFIG_CRYPTO_SERPENT=m
-CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
-CONFIG_CRYPTO_SERPENT_AVX_X86_64=m
-CONFIG_CRYPTO_SERPENT_AVX2_X86_64=m
-# CONFIG_CRYPTO_SM4 is not set
-CONFIG_CRYPTO_TEA=m
-CONFIG_CRYPTO_TWOFISH=m
-CONFIG_CRYPTO_TWOFISH_COMMON=m
-CONFIG_CRYPTO_TWOFISH_X86_64=m
-CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
-CONFIG_CRYPTO_TWOFISH_AVX_X86_64=m
-
-#
-# Compression
-#
-CONFIG_CRYPTO_DEFLATE=y
-CONFIG_CRYPTO_LZO=y
-# CONFIG_CRYPTO_842 is not set
-CONFIG_CRYPTO_LZ4=m
-CONFIG_CRYPTO_LZ4HC=m
-# CONFIG_CRYPTO_ZSTD is not set
-
-#
-# Random Number Generation
-#
-CONFIG_CRYPTO_ANSI_CPRNG=m
-CONFIG_CRYPTO_DRBG_MENU=y
-CONFIG_CRYPTO_DRBG_HMAC=y
-# CONFIG_CRYPTO_DRBG_HASH is not set
-# CONFIG_CRYPTO_DRBG_CTR is not set
-CONFIG_CRYPTO_DRBG=y
-CONFIG_CRYPTO_JITTERENTROPY=y
-CONFIG_CRYPTO_USER_API=y
-CONFIG_CRYPTO_USER_API_HASH=y
-CONFIG_CRYPTO_USER_API_SKCIPHER=y
-CONFIG_CRYPTO_USER_API_RNG=m
-# CONFIG_CRYPTO_USER_API_AEAD is not set
-CONFIG_CRYPTO_HASH_INFO=y
-CONFIG_CRYPTO_HW=y
-CONFIG_CRYPTO_DEV_PADLOCK=m
-CONFIG_CRYPTO_DEV_PADLOCK_AES=m
-CONFIG_CRYPTO_DEV_PADLOCK_SHA=m
-CONFIG_CRYPTO_DEV_CCP=y
-CONFIG_CRYPTO_DEV_CCP_DD=m
-CONFIG_CRYPTO_DEV_SP_CCP=y
-CONFIG_CRYPTO_DEV_CCP_CRYPTO=m
-CONFIG_CRYPTO_DEV_SP_PSP=y
-CONFIG_CRYPTO_DEV_QAT=m
-CONFIG_CRYPTO_DEV_QAT_DH895xCC=m
-# CONFIG_CRYPTO_DEV_QAT_C3XXX is not set
-# CONFIG_CRYPTO_DEV_QAT_C62X is not set
-CONFIG_CRYPTO_DEV_QAT_DH895xCCVF=m
-# CONFIG_CRYPTO_DEV_QAT_C3XXXVF is not set
-# CONFIG_CRYPTO_DEV_QAT_C62XVF is not set
-# CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set
-CONFIG_CRYPTO_DEV_CHELSIO=m
-CONFIG_CRYPTO_DEV_VIRTIO=m
-CONFIG_ASYMMETRIC_KEY_TYPE=y
-CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
-CONFIG_X509_CERTIFICATE_PARSER=y
-CONFIG_PKCS7_MESSAGE_PARSER=y
-# CONFIG_PKCS7_TEST_KEY is not set
-# CONFIG_SIGNED_PE_FILE_VERIFICATION is not set
-
-#
-# Certificates for signature checking
-#
-CONFIG_SYSTEM_TRUSTED_KEYRING=y
-CONFIG_SYSTEM_TRUSTED_KEYS=""
-# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
-# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
-# CONFIG_SYSTEM_BLACKLIST_KEYRING is not set
-CONFIG_BINARY_PRINTF=y
-
-#
-# Library routines
-#
-CONFIG_RAID6_PQ=m
-CONFIG_BITREVERSE=y
-CONFIG_RATIONAL=y
-CONFIG_GENERIC_STRNCPY_FROM_USER=y
-CONFIG_GENERIC_STRNLEN_USER=y
-CONFIG_GENERIC_NET_UTILS=y
-CONFIG_GENERIC_FIND_FIRST_BIT=y
-CONFIG_GENERIC_PCI_IOMAP=y
-CONFIG_GENERIC_IOMAP=y
-CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
-CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
-CONFIG_CRC_CCITT=y
-CONFIG_CRC16=y
-CONFIG_CRC_T10DIF=y
-CONFIG_CRC_ITU_T=m
-CONFIG_CRC32=y
-# CONFIG_CRC32_SELFTEST is not set
-CONFIG_CRC32_SLICEBY8=y
-# CONFIG_CRC32_SLICEBY4 is not set
-# CONFIG_CRC32_SARWATE is not set
-# CONFIG_CRC32_BIT is not set
-CONFIG_CRC64=m
-# CONFIG_CRC4 is not set
-# CONFIG_CRC7 is not set
-CONFIG_LIBCRC32C=m
-CONFIG_CRC8=m
-CONFIG_XXHASH=m
-# CONFIG_RANDOM32_SELFTEST is not set
-CONFIG_ZLIB_INFLATE=y
-CONFIG_ZLIB_DEFLATE=y
-CONFIG_LZO_COMPRESS=y
-CONFIG_LZO_DECOMPRESS=y
-CONFIG_LZ4_COMPRESS=m
-CONFIG_LZ4HC_COMPRESS=m
-CONFIG_LZ4_DECOMPRESS=y
-CONFIG_ZSTD_COMPRESS=m
-CONFIG_ZSTD_DECOMPRESS=m
-CONFIG_XZ_DEC=y
-CONFIG_XZ_DEC_X86=y
-CONFIG_XZ_DEC_POWERPC=y
-CONFIG_XZ_DEC_IA64=y
-CONFIG_XZ_DEC_ARM=y
-CONFIG_XZ_DEC_ARMTHUMB=y
-CONFIG_XZ_DEC_SPARC=y
-CONFIG_XZ_DEC_BCJ=y
-# CONFIG_XZ_DEC_TEST is not set
-CONFIG_DECOMPRESS_GZIP=y
-CONFIG_DECOMPRESS_BZIP2=y
-CONFIG_DECOMPRESS_LZMA=y
-CONFIG_DECOMPRESS_XZ=y
-CONFIG_DECOMPRESS_LZO=y
-CONFIG_DECOMPRESS_LZ4=y
-CONFIG_GENERIC_ALLOCATOR=y
-CONFIG_REED_SOLOMON=m
-CONFIG_REED_SOLOMON_ENC8=y
-CONFIG_REED_SOLOMON_DEC8=y
-CONFIG_TEXTSEARCH=y
-CONFIG_TEXTSEARCH_KMP=m
-CONFIG_TEXTSEARCH_BM=m
-CONFIG_TEXTSEARCH_FSM=m
-CONFIG_BTREE=y
-CONFIG_INTERVAL_TREE=y
-CONFIG_RADIX_TREE_MULTIORDER=y
-CONFIG_ASSOCIATIVE_ARRAY=y
-CONFIG_HAS_IOMEM=y
-CONFIG_HAS_IOPORT_MAP=y
-CONFIG_HAS_DMA=y
-CONFIG_NEED_SG_DMA_LENGTH=y
-CONFIG_NEED_DMA_MAP_STATE=y
-CONFIG_ARCH_DMA_ADDR_T_64BIT=y
-CONFIG_DMA_DIRECT_OPS=y
-CONFIG_DMA_VIRT_OPS=y
-CONFIG_SWIOTLB=y
-CONFIG_SGL_ALLOC=y
-CONFIG_IOMMU_HELPER=y
-CONFIG_CHECK_SIGNATURE=y
-CONFIG_CPU_RMAP=y
-CONFIG_DQL=y
-CONFIG_GLOB=y
-# CONFIG_GLOB_SELFTEST is not set
-CONFIG_NLATTR=y
-CONFIG_LRU_CACHE=m
-CONFIG_CLZ_TAB=y
-CONFIG_CORDIC=m
-# CONFIG_DDR is not set
-CONFIG_IRQ_POLL=y
-CONFIG_MPILIB=y
-CONFIG_OID_REGISTRY=y
-CONFIG_UCS2_STRING=y
-CONFIG_FONT_SUPPORT=y
-# CONFIG_FONTS is not set
-CONFIG_FONT_8x8=y
-CONFIG_FONT_8x16=y
-CONFIG_SG_POOL=y
-CONFIG_ARCH_HAS_SG_CHAIN=y
-CONFIG_ARCH_HAS_PMEM_API=y
-CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
-CONFIG_ARCH_HAS_UACCESS_MCSAFE=y
-CONFIG_SBITMAP=y
-CONFIG_PARMAN=m
-# CONFIG_STRING_SELFTEST is not set
-
-#
-# Kernel hacking
-#
-
-#
-# printk and dmesg options
-#
-CONFIG_PRINTK_TIME=y
-CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
-CONFIG_CONSOLE_LOGLEVEL_QUIET=4
-CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
-CONFIG_DYNAMIC_DEBUG=y
-
-#
-# Compile-time checks and compiler options
-#
-CONFIG_ENABLE_MUST_CHECK=y
-CONFIG_FRAME_WARN=2048
-CONFIG_STRIP_ASM_SYMS=y
-CONFIG_UNUSED_SYMBOLS=y
-CONFIG_DEBUG_FS=y
-CONFIG_HEADERS_CHECK=y
-CONFIG_DEBUG_SECTION_MISMATCH=y
-CONFIG_SECTION_MISMATCH_WARN_ONLY=y
-CONFIG_STACK_VALIDATION=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
-CONFIG_MAGIC_SYSRQ_SERIAL=y
-# CONFIG_DEBUG_KERNEL is not set
-
-#
-# Memory Debugging
-#
-# CONFIG_PAGE_EXTENSION is not set
-# CONFIG_PAGE_POISONING is not set
-CONFIG_DEBUG_RODATA_TEST=y
-CONFIG_HAVE_DEBUG_KMEMLEAK=y
-CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
-CONFIG_DEBUG_MEMORY_INIT=y
-CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
-CONFIG_HAVE_ARCH_KASAN=y
-# CONFIG_KASAN is not set
-CONFIG_ARCH_HAS_KCOV=y
-CONFIG_CC_HAS_SANCOV_TRACE_PC=y
-# CONFIG_KCOV is not set
-
-#
-# Debug Lockups and Hangs
-#
-CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
-# CONFIG_PANIC_ON_OOPS is not set
-CONFIG_PANIC_ON_OOPS_VALUE=0
-CONFIG_PANIC_TIMEOUT=0
-CONFIG_SCHED_INFO=y
-CONFIG_DEBUG_TIMEKEEPING=y
-
-#
-# Lock Debugging (spinlocks, mutexes, etc...)
-#
-CONFIG_LOCK_DEBUGGING_SUPPORT=y
-# CONFIG_WW_MUTEX_SELFTEST is not set
-CONFIG_STACKTRACE=y
-# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
-CONFIG_DEBUG_BUGVERBOSE=y
-
-#
-# RCU Debugging
-#
-CONFIG_RCU_CPU_STALL_TIMEOUT=60
-CONFIG_FUNCTION_ERROR_INJECTION=y
-CONFIG_USER_STACKTRACE_SUPPORT=y
-CONFIG_NOP_TRACER=y
-CONFIG_HAVE_FUNCTION_TRACER=y
-CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
-CONFIG_HAVE_DYNAMIC_FTRACE=y
-CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
-CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
-CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
-CONFIG_HAVE_FENTRY=y
-CONFIG_HAVE_C_RECORDMCOUNT=y
-CONFIG_TRACER_MAX_TRACE=y
-CONFIG_TRACE_CLOCK=y
-CONFIG_RING_BUFFER=y
-CONFIG_EVENT_TRACING=y
-CONFIG_CONTEXT_SWITCH_TRACER=y
-CONFIG_RING_BUFFER_ALLOW_SWAP=y
-CONFIG_TRACING=y
-CONFIG_GENERIC_TRACER=y
-CONFIG_TRACING_SUPPORT=y
-CONFIG_FTRACE=y
-CONFIG_FUNCTION_TRACER=y
-CONFIG_FUNCTION_GRAPH_TRACER=y
-# CONFIG_PREEMPTIRQ_EVENTS is not set
-# CONFIG_IRQSOFF_TRACER is not set
-CONFIG_SCHED_TRACER=y
-# CONFIG_HWLAT_TRACER is not set
-CONFIG_FTRACE_SYSCALLS=y
-CONFIG_TRACER_SNAPSHOT=y
-CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
-CONFIG_BRANCH_PROFILE_NONE=y
-# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
-# CONFIG_PROFILE_ALL_BRANCHES is not set
-CONFIG_STACK_TRACER=y
-CONFIG_BLK_DEV_IO_TRACE=y
-CONFIG_KPROBE_EVENTS=y
-# CONFIG_KPROBE_EVENTS_ON_NOTRACE is not set
-CONFIG_UPROBE_EVENTS=y
-CONFIG_BPF_EVENTS=y
-CONFIG_PROBE_EVENTS=y
-CONFIG_DYNAMIC_FTRACE=y
-CONFIG_DYNAMIC_FTRACE_WITH_REGS=y
-CONFIG_FUNCTION_PROFILER=y
-# CONFIG_BPF_KPROBE_OVERRIDE is not set
-CONFIG_FTRACE_MCOUNT_RECORD=y
-# CONFIG_FTRACE_STARTUP_TEST is not set
-# CONFIG_MMIOTRACE is not set
-# CONFIG_HIST_TRIGGERS is not set
-# CONFIG_TRACEPOINT_BENCHMARK is not set
-CONFIG_RING_BUFFER_BENCHMARK=m
-# CONFIG_RING_BUFFER_STARTUP_TEST is not set
-# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
-# CONFIG_TRACE_EVAL_MAP_FILE is not set
-CONFIG_TRACING_EVENTS_GPIO=y
-# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
-# CONFIG_DMA_API_DEBUG is not set
-CONFIG_RUNTIME_TESTING_MENU=y
-# CONFIG_LKDTM is not set
-# CONFIG_TEST_LIST_SORT is not set
-# CONFIG_TEST_SORT is not set
-CONFIG_ATOMIC64_SELFTEST=y
-CONFIG_ASYNC_RAID6_TEST=m
-CONFIG_TEST_HEXDUMP=m
-# CONFIG_TEST_STRING_HELPERS is not set
-CONFIG_TEST_KSTRTOX=y
-CONFIG_TEST_PRINTF=m
-# CONFIG_TEST_BITMAP is not set
-# CONFIG_TEST_BITFIELD is not set
-# CONFIG_TEST_UUID is not set
-# CONFIG_TEST_OVERFLOW is not set
-# CONFIG_TEST_RHASHTABLE is not set
-# CONFIG_TEST_HASH is not set
-# CONFIG_TEST_IDA is not set
-# CONFIG_TEST_PARMAN is not set
-# CONFIG_TEST_LKM is not set
-# CONFIG_TEST_USER_COPY is not set
-# CONFIG_TEST_BPF is not set
-# CONFIG_FIND_BIT_BENCHMARK is not set
-# CONFIG_TEST_FIRMWARE is not set
-# CONFIG_TEST_SYSCTL is not set
-# CONFIG_TEST_UDELAY is not set
-CONFIG_TEST_STATIC_KEYS=m
-# CONFIG_TEST_KMOD is not set
-# CONFIG_MEMTEST is not set
-# CONFIG_BUG_ON_DATA_CORRUPTION is not set
-# CONFIG_SAMPLES is not set
-CONFIG_HAVE_ARCH_KGDB=y
-CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
-# CONFIG_UBSAN is not set
-CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
-CONFIG_STRICT_DEVMEM=y
-# CONFIG_IO_STRICT_DEVMEM is not set
-CONFIG_TRACE_IRQFLAGS_SUPPORT=y
-CONFIG_EARLY_PRINTK_USB=y
-# CONFIG_X86_VERBOSE_BOOTUP is not set
-CONFIG_EARLY_PRINTK=y
-CONFIG_EARLY_PRINTK_DBGP=y
-# CONFIG_EARLY_PRINTK_EFI is not set
-# CONFIG_EARLY_PRINTK_USB_XDBC is not set
-# CONFIG_EFI_PGT_DUMP is not set
-# CONFIG_DEBUG_WX is not set
-CONFIG_DOUBLEFAULT=y
-CONFIG_HAVE_MMIOTRACE_SUPPORT=y
-CONFIG_IO_DELAY_TYPE_0X80=0
-CONFIG_IO_DELAY_TYPE_0XED=1
-CONFIG_IO_DELAY_TYPE_UDELAY=2
-CONFIG_IO_DELAY_TYPE_NONE=3
-CONFIG_IO_DELAY_0X80=y
-# CONFIG_IO_DELAY_0XED is not set
-# CONFIG_IO_DELAY_UDELAY is not set
-# CONFIG_IO_DELAY_NONE is not set
-CONFIG_DEFAULT_IO_DELAY_TYPE=0
-CONFIG_OPTIMIZE_INLINING=y
-# CONFIG_PUNIT_ATOM_DEBUG is not set
-CONFIG_UNWINDER_ORC=y
-# CONFIG_UNWINDER_FRAME_POINTER is not set
+#
+# Automatically generated file; DO NOT EDIT.
+# Linux/x86_64 5.4.6 Kernel Configuration
+#
+
+#
+# Compiler: gcc (Pisi Linux) 9.2.1 20191214
+#
+CONFIG_CC_IS_GCC=y
+CONFIG_GCC_VERSION=90201
+CONFIG_CLANG_VERSION=0
+CONFIG_CC_CAN_LINK=y
+CONFIG_CC_HAS_ASM_GOTO=y
+CONFIG_CC_HAS_ASM_INLINE=y
+CONFIG_CC_HAS_WARN_MAYBE_UNINITIALIZED=y
+CONFIG_IRQ_WORK=y
+CONFIG_BUILDTIME_EXTABLE_SORT=y
+CONFIG_THREAD_INFO_IN_TASK=y
+
+#
+# General setup
+#
+CONFIG_INIT_ENV_ARG_LIMIT=32
+# CONFIG_COMPILE_TEST is not set
+# CONFIG_HEADER_TEST is not set
+CONFIG_LOCALVERSION=""
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_BUILD_SALT=""
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_BZIP2=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KERNEL_LZ4=y
+# CONFIG_KERNEL_GZIP is not set
+# CONFIG_KERNEL_BZIP2 is not set
+# CONFIG_KERNEL_LZMA is not set
+CONFIG_KERNEL_XZ=y
+# CONFIG_KERNEL_LZO is not set
+# CONFIG_KERNEL_LZ4 is not set
+CONFIG_DEFAULT_HOSTNAME="(none)"
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_CROSS_MEMORY_ATTACH=y
+# CONFIG_USELIB is not set
+CONFIG_AUDIT=y
+CONFIG_HAVE_ARCH_AUDITSYSCALL=y
+CONFIG_AUDITSYSCALL=y
+
+#
+# IRQ subsystem
+#
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_PENDING_IRQ=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
+CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_SPARSE_IRQ=y
+# CONFIG_GENERIC_IRQ_DEBUGFS is not set
+# end of IRQ subsystem
+
+CONFIG_CLOCKSOURCE_WATCHDOG=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_CLOCKSOURCE_INIT=y
+CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+
+#
+# Timers subsystem
+#
+CONFIG_TICK_ONESHOT=y
+CONFIG_NO_HZ_COMMON=y
+# CONFIG_HZ_PERIODIC is not set
+# CONFIG_NO_HZ_IDLE is not set
+CONFIG_NO_HZ_FULL=y
+CONFIG_CONTEXT_TRACKING=y
+# CONFIG_CONTEXT_TRACKING_FORCE is not set
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+# end of Timers subsystem
+
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT is not set
+
+#
+# CPU/Task time and stats accounting
+#
+CONFIG_VIRT_CPU_ACCOUNTING=y
+CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
+# CONFIG_IRQ_TIME_ACCOUNTING is not set
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+# CONFIG_PSI is not set
+# end of CPU/Task time and stats accounting
+
+CONFIG_CPU_ISOLATION=y
+
+#
+# RCU Subsystem
+#
+CONFIG_TREE_RCU=y
+# CONFIG_RCU_EXPERT is not set
+CONFIG_SRCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_TASKS_RCU=y
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_RCU_NEED_SEGCBLIST=y
+CONFIG_RCU_NOCB_CPU=y
+# end of RCU Subsystem
+
+CONFIG_BUILD_BIN2C=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+# CONFIG_IKHEADERS is not set
+CONFIG_LOG_BUF_SHIFT=17
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
+CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
+CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
+
+#
+# Scheduler features
+#
+# CONFIG_UCLAMP_TASK is not set
+# end of Scheduler features
+
+CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
+CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
+CONFIG_ARCH_SUPPORTS_INT128=y
+# CONFIG_NUMA_BALANCING is not set
+CONFIG_CGROUPS=y
+CONFIG_PAGE_COUNTER=y
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
+# CONFIG_MEMCG_SWAP_ENABLED is not set
+CONFIG_MEMCG_KMEM=y
+CONFIG_BLK_CGROUP=y
+CONFIG_CGROUP_WRITEBACK=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_CFS_BANDWIDTH=y
+# CONFIG_RT_GROUP_SCHED is not set
+# CONFIG_CGROUP_PIDS is not set
+# CONFIG_CGROUP_RDMA is not set
+CONFIG_CGROUP_FREEZER=y
+# CONFIG_CGROUP_HUGETLB is not set
+CONFIG_CPUSETS=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+# CONFIG_CGROUP_PERF is not set
+CONFIG_CGROUP_BPF=y
+# CONFIG_CGROUP_DEBUG is not set
+CONFIG_SOCK_CGROUP_DATA=y
+CONFIG_NAMESPACES=y
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+CONFIG_USER_NS=y
+CONFIG_PID_NS=y
+CONFIG_NET_NS=y
+CONFIG_CHECKPOINT_RESTORE=y
+CONFIG_SCHED_AUTOGROUP=y
+# CONFIG_SYSFS_DEPRECATED is not set
+CONFIG_RELAY=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_LZMA=y
+CONFIG_RD_XZ=y
+CONFIG_RD_LZO=y
+CONFIG_RD_LZ4=y
+CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_HAVE_UID16=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_HAVE_PCSPKR_PLATFORM=y
+CONFIG_BPF=y
+CONFIG_EXPERT=y
+CONFIG_UID16=y
+CONFIG_MULTIUSER=y
+CONFIG_SGETMASK_SYSCALL=y
+# CONFIG_SYSFS_SYSCALL is not set
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_FHANDLE=y
+CONFIG_POSIX_TIMERS=y
+CONFIG_PRINTK=y
+CONFIG_PRINTK_NMI=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_PCSPKR_PLATFORM=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_FUTEX_PI=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+CONFIG_IO_URING=y
+CONFIG_ADVISE_SYSCALLS=y
+CONFIG_MEMBARRIER=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
+CONFIG_KALLSYMS_BASE_RELATIVE=y
+CONFIG_BPF_SYSCALL=y
+CONFIG_BPF_JIT_ALWAYS_ON=y
+# CONFIG_USERFAULTFD is not set
+CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
+CONFIG_RSEQ=y
+# CONFIG_DEBUG_RSEQ is not set
+CONFIG_EMBEDDED=y
+CONFIG_HAVE_PERF_EVENTS=y
+# CONFIG_PC104 is not set
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_PERF_EVENTS=y
+# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
+# end of Kernel Performance Events And Counters
+
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
+# CONFIG_COMPAT_BRK is not set
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_SLAB_MERGE_DEFAULT is not set
+CONFIG_SLAB_FREELIST_RANDOM=y
+# CONFIG_SLAB_FREELIST_HARDENED is not set
+CONFIG_SHUFFLE_PAGE_ALLOCATOR=y
+CONFIG_SLUB_CPU_PARTIAL=y
+CONFIG_SYSTEM_DATA_VERIFICATION=y
+CONFIG_PROFILING=y
+CONFIG_TRACEPOINTS=y
+# end of General setup
+
+CONFIG_64BIT=y
+CONFIG_X86_64=y
+CONFIG_X86=y
+CONFIG_INSTRUCTION_DECODER=y
+CONFIG_OUTPUT_FORMAT="elf64-x86-64"
+CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_MMU=y
+CONFIG_ARCH_MMAP_RND_BITS_MIN=28
+CONFIG_ARCH_MMAP_RND_BITS_MAX=32
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
+CONFIG_GENERIC_ISA_DMA=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_ARCH_HAS_CPU_RELAX=y
+CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
+CONFIG_ARCH_HAS_FILTER_PGPROT=y
+CONFIG_HAVE_SETUP_PER_CPU_AREA=y
+CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
+CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
+CONFIG_ZONE_DMA32=y
+CONFIG_AUDIT_ARCH=y
+CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
+CONFIG_HAVE_INTEL_TXT=y
+CONFIG_X86_64_SMP=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_PGTABLE_LEVELS=4
+CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
+
+#
+# Processor type and features
+#
+CONFIG_ZONE_DMA=y
+CONFIG_SMP=y
+CONFIG_X86_FEATURE_NAMES=y
+CONFIG_X86_X2APIC=y
+CONFIG_X86_MPPARSE=y
+# CONFIG_GOLDFISH is not set
+CONFIG_RETPOLINE=y
+CONFIG_X86_CPU_RESCTRL=y
+CONFIG_X86_EXTENDED_PLATFORM=y
+# CONFIG_X86_NUMACHIP is not set
+# CONFIG_X86_VSMP is not set
+# CONFIG_X86_UV is not set
+# CONFIG_X86_GOLDFISH is not set
+# CONFIG_X86_INTEL_MID is not set
+CONFIG_X86_INTEL_LPSS=y
+CONFIG_X86_AMD_PLATFORM_DEVICE=y
+CONFIG_IOSF_MBI=y
+# CONFIG_IOSF_MBI_DEBUG is not set
+CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
+CONFIG_SCHED_OMIT_FRAME_POINTER=y
+CONFIG_HYPERVISOR_GUEST=y
+CONFIG_PARAVIRT=y
+CONFIG_PARAVIRT_XXL=y
+# CONFIG_PARAVIRT_DEBUG is not set
+# CONFIG_PARAVIRT_SPINLOCKS is not set
+CONFIG_X86_HV_CALLBACK_VECTOR=y
+CONFIG_XEN=y
+CONFIG_XEN_PV=y
+CONFIG_XEN_PV_SMP=y
+CONFIG_XEN_DOM0=y
+CONFIG_XEN_PVHVM=y
+CONFIG_XEN_PVHVM_SMP=y
+CONFIG_XEN_512GB=y
+CONFIG_XEN_SAVE_RESTORE=y
+CONFIG_XEN_DEBUG_FS=y
+CONFIG_XEN_PVH=y
+CONFIG_KVM_GUEST=y
+CONFIG_ARCH_CPUIDLE_HALTPOLL=y
+CONFIG_PVH=y
+# CONFIG_KVM_DEBUG_FS is not set
+# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
+CONFIG_PARAVIRT_CLOCK=y
+# CONFIG_JAILHOUSE_GUEST is not set
+CONFIG_ACRN_GUEST=y
+# CONFIG_MK8 is not set
+# CONFIG_MPSC is not set
+# CONFIG_MCORE2 is not set
+# CONFIG_MATOM is not set
+CONFIG_GENERIC_CPU=y
+CONFIG_X86_INTERNODE_CACHE_SHIFT=6
+CONFIG_X86_L1_CACHE_SHIFT=6
+CONFIG_X86_TSC=y
+CONFIG_X86_CMPXCHG64=y
+CONFIG_X86_CMOV=y
+CONFIG_X86_MINIMUM_CPU_FAMILY=64
+CONFIG_X86_DEBUGCTLMSR=y
+# CONFIG_PROCESSOR_SELECT is not set
+CONFIG_CPU_SUP_INTEL=y
+CONFIG_CPU_SUP_AMD=y
+CONFIG_CPU_SUP_HYGON=y
+CONFIG_CPU_SUP_CENTAUR=y
+CONFIG_CPU_SUP_ZHAOXIN=y
+CONFIG_HPET_TIMER=y
+CONFIG_HPET_EMULATE_RTC=y
+CONFIG_DMI=y
+CONFIG_GART_IOMMU=y
+CONFIG_CALGARY_IOMMU=y
+CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y
+# CONFIG_MAXSMP is not set
+CONFIG_NR_CPUS_RANGE_BEGIN=2
+CONFIG_NR_CPUS_RANGE_END=512
+CONFIG_NR_CPUS_DEFAULT=64
+CONFIG_NR_CPUS=128
+CONFIG_SCHED_SMT=y
+CONFIG_SCHED_MC=y
+CONFIG_SCHED_MC_PRIO=y
+CONFIG_X86_LOCAL_APIC=y
+CONFIG_X86_IO_APIC=y
+CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
+CONFIG_X86_MCE=y
+# CONFIG_X86_MCELOG_LEGACY is not set
+CONFIG_X86_MCE_INTEL=y
+CONFIG_X86_MCE_AMD=y
+CONFIG_X86_MCE_THRESHOLD=y
+CONFIG_X86_MCE_INJECT=m
+CONFIG_X86_THERMAL_VECTOR=y
+
+#
+# Performance monitoring
+#
+CONFIG_PERF_EVENTS_INTEL_UNCORE=m
+CONFIG_PERF_EVENTS_INTEL_RAPL=m
+CONFIG_PERF_EVENTS_INTEL_CSTATE=m
+CONFIG_PERF_EVENTS_AMD_POWER=m
+# end of Performance monitoring
+
+CONFIG_X86_16BIT=y
+CONFIG_X86_ESPFIX64=y
+CONFIG_X86_VSYSCALL_EMULATION=y
+CONFIG_I8K=m
+CONFIG_MICROCODE=y
+CONFIG_MICROCODE_INTEL=y
+CONFIG_MICROCODE_AMD=y
+CONFIG_MICROCODE_OLD_INTERFACE=y
+CONFIG_X86_MSR=m
+CONFIG_X86_CPUID=m
+# CONFIG_X86_5LEVEL is not set
+CONFIG_X86_DIRECT_GBPAGES=y
+# CONFIG_X86_CPA_STATISTICS is not set
+# CONFIG_AMD_MEM_ENCRYPT is not set
+CONFIG_NUMA=y
+CONFIG_AMD_NUMA=y
+CONFIG_X86_64_ACPI_NUMA=y
+CONFIG_NODES_SPAN_OTHER_NODES=y
+# CONFIG_NUMA_EMU is not set
+CONFIG_NODES_SHIFT=6
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SPARSEMEM_DEFAULT=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_MEMORY_PROBE=y
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+# CONFIG_X86_PMEM_LEGACY is not set
+CONFIG_X86_CHECK_BIOS_CORRUPTION=y
+# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
+CONFIG_X86_RESERVE_LOW=64
+CONFIG_MTRR=y
+CONFIG_MTRR_SANITIZER=y
+CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
+CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
+CONFIG_X86_PAT=y
+CONFIG_ARCH_USES_PG_UNCACHED=y
+CONFIG_ARCH_RANDOM=y
+CONFIG_X86_SMAP=y
+CONFIG_X86_INTEL_UMIP=y
+# CONFIG_X86_INTEL_MPX is not set
+CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
+# CONFIG_X86_INTEL_TSX_MODE_OFF is not set
+# CONFIG_X86_INTEL_TSX_MODE_ON is not set
+CONFIG_X86_INTEL_TSX_MODE_AUTO=y
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y
+CONFIG_EFI_MIXED=y
+CONFIG_SECCOMP=y
+# CONFIG_HZ_100 is not set
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_300 is not set
+CONFIG_HZ_1000=y
+CONFIG_HZ=1000
+CONFIG_SCHED_HRTICK=y
+CONFIG_KEXEC=y
+# CONFIG_KEXEC_FILE is not set
+CONFIG_CRASH_DUMP=y
+CONFIG_KEXEC_JUMP=y
+CONFIG_PHYSICAL_START=0x200000
+CONFIG_RELOCATABLE=y
+CONFIG_RANDOMIZE_BASE=y
+CONFIG_X86_NEED_RELOCS=y
+CONFIG_PHYSICAL_ALIGN=0x1000000
+CONFIG_DYNAMIC_MEMORY_LAYOUT=y
+CONFIG_RANDOMIZE_MEMORY=y
+CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0xa
+CONFIG_HOTPLUG_CPU=y
+# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
+# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
+# CONFIG_COMPAT_VDSO is not set
+CONFIG_LEGACY_VSYSCALL_EMULATE=y
+# CONFIG_LEGACY_VSYSCALL_XONLY is not set
+# CONFIG_LEGACY_VSYSCALL_NONE is not set
+# CONFIG_CMDLINE_BOOL is not set
+CONFIG_MODIFY_LDT_SYSCALL=y
+CONFIG_HAVE_LIVEPATCH=y
+CONFIG_LIVEPATCH=y
+# end of Processor type and features
+
+CONFIG_ARCH_HAS_ADD_PAGES=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_USE_PERCPU_NUMA_NODE_ID=y
+CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
+CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
+CONFIG_ARCH_ENABLE_THP_MIGRATION=y
+
+#
+# Power management and ACPI options
+#
+CONFIG_ARCH_HIBERNATION_HEADER=y
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+# CONFIG_SUSPEND_SKIP_SYNC is not set
+CONFIG_HIBERNATE_CALLBACKS=y
+CONFIG_HIBERNATION=y
+CONFIG_PM_STD_PARTITION=""
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+# CONFIG_PM_AUTOSLEEP is not set
+# CONFIG_PM_WAKELOCKS is not set
+CONFIG_PM=y
+CONFIG_PM_DEBUG=y
+# CONFIG_PM_ADVANCED_DEBUG is not set
+# CONFIG_PM_TEST_SUSPEND is not set
+CONFIG_PM_SLEEP_DEBUG=y
+# CONFIG_DPM_WATCHDOG is not set
+CONFIG_PM_TRACE=y
+CONFIG_PM_TRACE_RTC=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+# CONFIG_ENERGY_MODEL is not set
+CONFIG_ARCH_SUPPORTS_ACPI=y
+CONFIG_ACPI=y
+CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
+CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
+CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
+# CONFIG_ACPI_DEBUGGER is not set
+CONFIG_ACPI_SPCR_TABLE=y
+CONFIG_ACPI_LPIT=y
+CONFIG_ACPI_SLEEP=y
+# CONFIG_ACPI_PROCFS_POWER is not set
+CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
+# CONFIG_ACPI_EC_DEBUGFS is not set
+CONFIG_ACPI_AC=m
+CONFIG_ACPI_BATTERY=m
+CONFIG_ACPI_BUTTON=m
+CONFIG_ACPI_VIDEO=m
+CONFIG_ACPI_FAN=m
+CONFIG_ACPI_TAD=m
+CONFIG_ACPI_DOCK=y
+CONFIG_ACPI_CPU_FREQ_PSS=y
+CONFIG_ACPI_PROCESSOR_CSTATE=y
+CONFIG_ACPI_PROCESSOR_IDLE=y
+CONFIG_ACPI_CPPC_LIB=y
+CONFIG_ACPI_PROCESSOR=y
+CONFIG_ACPI_IPMI=m
+CONFIG_ACPI_HOTPLUG_CPU=y
+CONFIG_ACPI_PROCESSOR_AGGREGATOR=m
+CONFIG_ACPI_THERMAL=m
+CONFIG_ACPI_NUMA=y
+CONFIG_ACPI_CUSTOM_DSDT_FILE=""
+CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
+CONFIG_ACPI_TABLE_UPGRADE=y
+# CONFIG_ACPI_DEBUG is not set
+# CONFIG_ACPI_PCI_SLOT is not set
+CONFIG_ACPI_CONTAINER=y
+# CONFIG_ACPI_HOTPLUG_MEMORY is not set
+CONFIG_ACPI_HOTPLUG_IOAPIC=y
+CONFIG_ACPI_SBS=m
+CONFIG_ACPI_HED=y
+# CONFIG_ACPI_CUSTOM_METHOD is not set
+CONFIG_ACPI_BGRT=y
+# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
+CONFIG_ACPI_NFIT=m
+# CONFIG_NFIT_SECURITY_DEBUG is not set
+# CONFIG_ACPI_HMAT is not set
+CONFIG_HAVE_ACPI_APEI=y
+CONFIG_HAVE_ACPI_APEI_NMI=y
+CONFIG_ACPI_APEI=y
+CONFIG_ACPI_APEI_GHES=y
+CONFIG_ACPI_APEI_PCIEAER=y
+CONFIG_ACPI_APEI_MEMORY_FAILURE=y
+CONFIG_ACPI_APEI_EINJ=m
+# CONFIG_ACPI_APEI_ERST_DEBUG is not set
+CONFIG_DPTF_POWER=m
+CONFIG_ACPI_WATCHDOG=y
+CONFIG_ACPI_EXTLOG=m
+CONFIG_ACPI_ADXL=y
+CONFIG_PMIC_OPREGION=y
+CONFIG_CRC_PMIC_OPREGION=y
+# CONFIG_XPOWER_PMIC_OPREGION is not set
+CONFIG_BXT_WC_PMIC_OPREGION=y
+CONFIG_CHT_WC_PMIC_OPREGION=y
+CONFIG_CHT_DC_TI_PMIC_OPREGION=y
+CONFIG_ACPI_CONFIGFS=m
+# CONFIG_TPS68470_PMIC_OPREGION is not set
+CONFIG_X86_PM_TIMER=y
+# CONFIG_SFI is not set
+
+#
+# CPU Frequency scaling
+#
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+# CONFIG_CPU_FREQ_STAT is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
+
+#
+# CPU frequency scaling drivers
+#
+CONFIG_X86_INTEL_PSTATE=y
+CONFIG_X86_PCC_CPUFREQ=m
+CONFIG_X86_ACPI_CPUFREQ=m
+CONFIG_X86_ACPI_CPUFREQ_CPB=y
+CONFIG_X86_POWERNOW_K8=m
+CONFIG_X86_AMD_FREQ_SENSITIVITY=m
+CONFIG_X86_SPEEDSTEP_CENTRINO=m
+CONFIG_X86_P4_CLOCKMOD=m
+
+#
+# shared options
+#
+CONFIG_X86_SPEEDSTEP_LIB=m
+# end of CPU Frequency scaling
+
+#
+# CPU Idle
+#
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_IDLE_GOV_TEO=y
+CONFIG_CPU_IDLE_GOV_HALTPOLL=y
+CONFIG_HALTPOLL_CPUIDLE=m
+# end of CPU Idle
+
+CONFIG_INTEL_IDLE=y
+# end of Power management and ACPI options
+
+#
+# Bus options (PCI etc.)
+#
+CONFIG_PCI_DIRECT=y
+CONFIG_PCI_MMCONFIG=y
+CONFIG_PCI_XEN=y
+CONFIG_MMCONF_FAM10H=y
+# CONFIG_PCI_CNB20LE_QUIRK is not set
+CONFIG_ISA_BUS=y
+CONFIG_ISA_DMA_API=y
+CONFIG_AMD_NB=y
+# CONFIG_X86_SYSFB is not set
+# end of Bus options (PCI etc.)
+
+#
+# Binary Emulations
+#
+CONFIG_IA32_EMULATION=y
+CONFIG_X86_X32=y
+CONFIG_COMPAT_32=y
+CONFIG_COMPAT=y
+CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
+CONFIG_SYSVIPC_COMPAT=y
+# end of Binary Emulations
+
+CONFIG_X86_DEV_DMA_OPS=y
+
+#
+# Firmware Drivers
+#
+CONFIG_EDD=y
+# CONFIG_EDD_OFF is not set
+CONFIG_FIRMWARE_MEMMAP=y
+CONFIG_DMIID=y
+CONFIG_DMI_SYSFS=m
+CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
+CONFIG_ISCSI_IBFT_FIND=y
+CONFIG_ISCSI_IBFT=m
+CONFIG_FW_CFG_SYSFS=m
+# CONFIG_FW_CFG_SYSFS_CMDLINE is not set
+# CONFIG_GOOGLE_FIRMWARE is not set
+
+#
+# EFI (Extensible Firmware Interface) Support
+#
+CONFIG_EFI_VARS=y
+CONFIG_EFI_ESRT=y
+CONFIG_EFI_VARS_PSTORE=y
+CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE=y
+CONFIG_EFI_RUNTIME_MAP=y
+# CONFIG_EFI_FAKE_MEMMAP is not set
+CONFIG_EFI_RUNTIME_WRAPPERS=y
+CONFIG_EFI_BOOTLOADER_CONTROL=m
+CONFIG_EFI_CAPSULE_LOADER=m
+# CONFIG_EFI_TEST is not set
+CONFIG_APPLE_PROPERTIES=y
+# CONFIG_RESET_ATTACK_MITIGATION is not set
+CONFIG_EFI_RCI2_TABLE=y
+# end of EFI (Extensible Firmware Interface) Support
+
+CONFIG_UEFI_CPER=y
+CONFIG_UEFI_CPER_X86=y
+CONFIG_EFI_DEV_PATH_PARSER=y
+CONFIG_EFI_EARLYCON=y
+
+#
+# Tegra firmware driver
+#
+# end of Tegra firmware driver
+# end of Firmware Drivers
+
+CONFIG_HAVE_KVM=y
+CONFIG_HAVE_KVM_IRQCHIP=y
+CONFIG_HAVE_KVM_IRQFD=y
+CONFIG_HAVE_KVM_IRQ_ROUTING=y
+CONFIG_HAVE_KVM_EVENTFD=y
+CONFIG_KVM_MMIO=y
+CONFIG_KVM_ASYNC_PF=y
+CONFIG_HAVE_KVM_MSI=y
+CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
+CONFIG_KVM_VFIO=y
+CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
+CONFIG_KVM_COMPAT=y
+CONFIG_HAVE_KVM_IRQ_BYPASS=y
+CONFIG_HAVE_KVM_NO_POLL=y
+CONFIG_VIRTUALIZATION=y
+CONFIG_KVM=m
+CONFIG_KVM_INTEL=m
+CONFIG_KVM_AMD=m
+CONFIG_KVM_AMD_SEV=y
+# CONFIG_KVM_MMU_AUDIT is not set
+CONFIG_VHOST_NET=m
+CONFIG_VHOST_SCSI=m
+CONFIG_VHOST_VSOCK=m
+CONFIG_VHOST=m
+# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
+
+#
+# General architecture-dependent options
+#
+CONFIG_CRASH_CORE=y
+CONFIG_KEXEC_CORE=y
+CONFIG_HOTPLUG_SMT=y
+CONFIG_OPROFILE=m
+CONFIG_OPROFILE_EVENT_MULTIPLEX=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_OPROFILE_NMI_TIMER=y
+CONFIG_KPROBES=y
+CONFIG_JUMP_LABEL=y
+# CONFIG_STATIC_KEYS_SELFTEST is not set
+CONFIG_OPTPROBES=y
+CONFIG_KPROBES_ON_FTRACE=y
+CONFIG_UPROBES=y
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_KRETPROBES=y
+CONFIG_USER_RETURN_NOTIFIER=y
+CONFIG_HAVE_IOREMAP_PROT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_OPTPROBES=y
+CONFIG_HAVE_KPROBES_ON_FTRACE=y
+CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
+CONFIG_HAVE_NMI=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
+CONFIG_ARCH_HAS_SET_MEMORY=y
+CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
+CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
+CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
+CONFIG_HAVE_ASM_MODVERSIONS=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_HW_BREAKPOINT=y
+CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
+CONFIG_HAVE_USER_RETURN_NOTIFIER=y
+CONFIG_HAVE_PERF_EVENTS_NMI=y
+CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
+CONFIG_HAVE_PERF_REGS=y
+CONFIG_HAVE_PERF_USER_STACK_DUMP=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
+CONFIG_HAVE_RCU_TABLE_FREE=y
+CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
+CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
+CONFIG_HAVE_CMPXCHG_LOCAL=y
+CONFIG_HAVE_CMPXCHG_DOUBLE=y
+CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_STACKLEAK=y
+CONFIG_HAVE_STACKPROTECTOR=y
+CONFIG_CC_HAS_STACKPROTECTOR_NONE=y
+CONFIG_STACKPROTECTOR=y
+CONFIG_STACKPROTECTOR_STRONG=y
+CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_MOVE_PMD=y
+CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
+CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
+CONFIG_HAVE_ARCH_HUGE_VMAP=y
+CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
+CONFIG_HAVE_ARCH_SOFT_DIRTY=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
+CONFIG_HAVE_EXIT_THREAD=y
+CONFIG_ARCH_MMAP_RND_BITS=28
+CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
+CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
+CONFIG_HAVE_COPY_THREAD_TLS=y
+CONFIG_HAVE_STACK_VALIDATION=y
+CONFIG_HAVE_RELIABLE_STACKTRACE=y
+CONFIG_ISA_BUS_API=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_COMPAT_OLD_SIGACTION=y
+CONFIG_64BIT_TIME=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_HAVE_ARCH_VMAP_STACK=y
+CONFIG_VMAP_STACK=y
+CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
+CONFIG_STRICT_KERNEL_RWX=y
+CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
+CONFIG_STRICT_MODULE_RWX=y
+CONFIG_ARCH_HAS_REFCOUNT=y
+# CONFIG_REFCOUNT_FULL is not set
+CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
+CONFIG_ARCH_USE_MEMREMAP_PROT=y
+# CONFIG_LOCK_EVENT_COUNTS is not set
+CONFIG_ARCH_HAS_MEM_ENCRYPT=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_GCOV_KERNEL is not set
+CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
+# end of GCOV-based kernel profiling
+
+CONFIG_PLUGIN_HOSTCC=""
+CONFIG_HAVE_GCC_PLUGINS=y
+# end of General architecture-dependent options
+
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+# CONFIG_MODULE_SIG is not set
+# CONFIG_MODULE_COMPRESS is not set
+# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
+CONFIG_UNUSED_SYMBOLS=y
+CONFIG_MODULES_TREE_LOOKUP=y
+CONFIG_BLOCK=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_BLK_DEV_BSG=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_INTEGRITY=y
+# CONFIG_BLK_DEV_ZONED is not set
+CONFIG_BLK_DEV_THROTTLING=y
+# CONFIG_BLK_DEV_THROTTLING_LOW is not set
+# CONFIG_BLK_CMDLINE_PARSER is not set
+CONFIG_BLK_WBT=y
+# CONFIG_BLK_CGROUP_IOLATENCY is not set
+# CONFIG_BLK_CGROUP_IOCOST is not set
+CONFIG_BLK_WBT_MQ=y
+# CONFIG_BLK_DEBUG_FS is not set
+CONFIG_BLK_SED_OPAL=y
+
+#
+# Partition Types
+#
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_ACORN_PARTITION is not set
+# CONFIG_AIX_PARTITION is not set
+# CONFIG_OSF_PARTITION is not set
+# CONFIG_AMIGA_PARTITION is not set
+# CONFIG_ATARI_PARTITION is not set
+CONFIG_MAC_PARTITION=y
+CONFIG_MSDOS_PARTITION=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_MINIX_SUBPARTITION=y
+CONFIG_SOLARIS_X86_PARTITION=y
+CONFIG_UNIXWARE_DISKLABEL=y
+CONFIG_LDM_PARTITION=y
+# CONFIG_LDM_DEBUG is not set
+CONFIG_SGI_PARTITION=y
+# CONFIG_ULTRIX_PARTITION is not set
+CONFIG_SUN_PARTITION=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_EFI_PARTITION=y
+CONFIG_SYSV68_PARTITION=y
+# CONFIG_CMDLINE_PARTITION is not set
+# end of Partition Types
+
+CONFIG_BLOCK_COMPAT=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_MQ_VIRTIO=y
+CONFIG_BLK_MQ_RDMA=y
+CONFIG_BLK_PM=y
+
+#
+# IO Schedulers
+#
+CONFIG_MQ_IOSCHED_DEADLINE=y
+CONFIG_MQ_IOSCHED_KYBER=y
+CONFIG_IOSCHED_BFQ=y
+CONFIG_BFQ_GROUP_IOSCHED=y
+# CONFIG_BFQ_CGROUP_DEBUG is not set
+# end of IO Schedulers
+
+CONFIG_PREEMPT_NOTIFIERS=y
+CONFIG_PADATA=y
+CONFIG_ASN1=y
+CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
+CONFIG_INLINE_READ_UNLOCK=y
+CONFIG_INLINE_READ_UNLOCK_IRQ=y
+CONFIG_INLINE_WRITE_UNLOCK=y
+CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
+CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
+CONFIG_FREEZER=y
+
+#
+# Executable file formats
+#
+CONFIG_BINFMT_ELF=y
+CONFIG_COMPAT_BINFMT_ELF=y
+CONFIG_ELFCORE=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_BINFMT_SCRIPT=y
+CONFIG_BINFMT_MISC=m
+CONFIG_COREDUMP=y
+# end of Executable file formats
+
+#
+# Memory Management options
+#
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM=y
+CONFIG_NEED_MULTIPLE_NODES=y
+CONFIG_HAVE_MEMORY_PRESENT=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_FAST_GUP=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_HAVE_BOOTMEM_INFO_NODE=y
+CONFIG_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTPLUG_SPARSE=y
+# CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set
+CONFIG_MEMORY_HOTREMOVE=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_MEMORY_BALLOON=y
+CONFIG_BALLOON_COMPACTION=y
+CONFIG_COMPACTION=y
+CONFIG_MIGRATION=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_MMU_NOTIFIER=y
+CONFIG_KSM=y
+CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
+CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
+CONFIG_MEMORY_FAILURE=y
+# CONFIG_HWPOISON_INJECT is not set
+CONFIG_TRANSPARENT_HUGEPAGE=y
+# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+CONFIG_ARCH_WANTS_THP_SWAP=y
+CONFIG_THP_SWAP=y
+CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
+CONFIG_CLEANCACHE=y
+CONFIG_FRONTSWAP=y
+CONFIG_CMA=y
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_AREAS=7
+# CONFIG_MEM_SOFT_DIRTY is not set
+CONFIG_ZSWAP=y
+CONFIG_ZPOOL=y
+CONFIG_ZBUD=y
+CONFIG_Z3FOLD=m
+CONFIG_ZSMALLOC=y
+# CONFIG_PGTABLE_MAPPING is not set
+# CONFIG_ZSMALLOC_STAT is not set
+CONFIG_GENERIC_EARLY_IOREMAP=y
+# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+# CONFIG_IDLE_PAGE_TRACKING is not set
+CONFIG_ARCH_HAS_PTE_DEVMAP=y
+# CONFIG_ZONE_DEVICE is not set
+CONFIG_HMM_MIRROR=y
+CONFIG_FRAME_VECTOR=y
+CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
+CONFIG_ARCH_HAS_PKEYS=y
+# CONFIG_PERCPU_STATS is not set
+# CONFIG_GUP_BENCHMARK is not set
+# CONFIG_READ_ONLY_THP_FOR_FS is not set
+CONFIG_ARCH_HAS_PTE_SPECIAL=y
+# end of Memory Management options
+
+CONFIG_NET=y
+CONFIG_COMPAT_NETLINK_MESSAGES=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_EGRESS=y
+CONFIG_SKB_EXTENSIONS=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=m
+CONFIG_PACKET_DIAG=m
+CONFIG_UNIX=y
+CONFIG_UNIX_SCM=y
+CONFIG_UNIX_DIAG=m
+CONFIG_TLS=m
+# CONFIG_TLS_DEVICE is not set
+CONFIG_XFRM=y
+CONFIG_XFRM_OFFLOAD=y
+CONFIG_XFRM_ALGO=m
+CONFIG_XFRM_USER=m
+CONFIG_XFRM_INTERFACE=m
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_MIGRATE=y
+# CONFIG_XFRM_STATISTICS is not set
+CONFIG_XFRM_IPCOMP=m
+CONFIG_NET_KEY=m
+CONFIG_NET_KEY_MIGRATE=y
+# CONFIG_SMC is not set
+CONFIG_XDP_SOCKETS=y
+CONFIG_XDP_SOCKETS_DIAG=m
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+# CONFIG_IP_FIB_TRIE_STATS is not set
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IP_ROUTE_CLASSID=y
+# CONFIG_IP_PNP is not set
+CONFIG_NET_IPIP=m
+CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NET_IP_TUNNEL=m
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_IP_MROUTE_COMMON=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_SYN_COOKIES=y
+CONFIG_NET_IPVTI=m
+CONFIG_NET_UDP_TUNNEL=m
+CONFIG_NET_FOU=m
+CONFIG_NET_FOU_IP_TUNNELS=y
+CONFIG_INET_AH=m
+CONFIG_INET_ESP=m
+CONFIG_INET_ESP_OFFLOAD=m
+CONFIG_INET_IPCOMP=m
+CONFIG_INET_XFRM_TUNNEL=m
+CONFIG_INET_TUNNEL=m
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+CONFIG_INET_UDP_DIAG=m
+CONFIG_INET_RAW_DIAG=m
+# CONFIG_INET_DIAG_DESTROY is not set
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+CONFIG_IPV6=m
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_OPTIMISTIC_DAD=y
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_ESP_OFFLOAD=m
+CONFIG_INET6_IPCOMP=m
+CONFIG_IPV6_MIP6=m
+# CONFIG_IPV6_ILA is not set
+CONFIG_INET6_XFRM_TUNNEL=m
+CONFIG_INET6_TUNNEL=m
+CONFIG_IPV6_VTI=m
+CONFIG_IPV6_SIT=m
+# CONFIG_IPV6_SIT_6RD is not set
+CONFIG_IPV6_NDISC_NODETYPE=y
+CONFIG_IPV6_TUNNEL=m
+CONFIG_IPV6_GRE=m
+CONFIG_IPV6_FOU=m
+CONFIG_IPV6_FOU_TUNNEL=m
+CONFIG_IPV6_MULTIPLE_TABLES=y
+CONFIG_IPV6_SUBTREES=y
+CONFIG_IPV6_MROUTE=y
+CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IPV6_PIMSM_V2=y
+# CONFIG_IPV6_SEG6_LWTUNNEL is not set
+# CONFIG_IPV6_SEG6_HMAC is not set
+CONFIG_NETLABEL=y
+CONFIG_NETWORK_SECMARK=y
+CONFIG_NET_PTP_CLASSIFY=y
+# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
+CONFIG_NETFILTER=y
+CONFIG_NETFILTER_ADVANCED=y
+CONFIG_BRIDGE_NETFILTER=m
+
+#
+# Core Netfilter Configuration
+#
+CONFIG_NETFILTER_INGRESS=y
+CONFIG_NETFILTER_NETLINK=m
+CONFIG_NETFILTER_FAMILY_BRIDGE=y
+CONFIG_NETFILTER_FAMILY_ARP=y
+CONFIG_NETFILTER_NETLINK_ACCT=m
+CONFIG_NETFILTER_NETLINK_QUEUE=m
+CONFIG_NETFILTER_NETLINK_LOG=m
+CONFIG_NETFILTER_NETLINK_OSF=m
+CONFIG_NF_CONNTRACK=m
+CONFIG_NF_LOG_COMMON=m
+CONFIG_NF_LOG_NETDEV=m
+CONFIG_NETFILTER_CONNCOUNT=m
+CONFIG_NF_CONNTRACK_MARK=y
+CONFIG_NF_CONNTRACK_SECMARK=y
+CONFIG_NF_CONNTRACK_ZONES=y
+# CONFIG_NF_CONNTRACK_PROCFS is not set
+CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NF_CONNTRACK_TIMEOUT=y
+CONFIG_NF_CONNTRACK_TIMESTAMP=y
+CONFIG_NF_CONNTRACK_LABELS=y
+CONFIG_NF_CT_PROTO_DCCP=y
+CONFIG_NF_CT_PROTO_GRE=y
+CONFIG_NF_CT_PROTO_SCTP=y
+CONFIG_NF_CT_PROTO_UDPLITE=y
+CONFIG_NF_CONNTRACK_AMANDA=m
+CONFIG_NF_CONNTRACK_FTP=m
+CONFIG_NF_CONNTRACK_H323=m
+CONFIG_NF_CONNTRACK_IRC=m
+CONFIG_NF_CONNTRACK_BROADCAST=m
+CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+CONFIG_NF_CONNTRACK_SNMP=m
+CONFIG_NF_CONNTRACK_PPTP=m
+CONFIG_NF_CONNTRACK_SANE=m
+CONFIG_NF_CONNTRACK_SIP=m
+CONFIG_NF_CONNTRACK_TFTP=m
+CONFIG_NF_CT_NETLINK=m
+CONFIG_NF_CT_NETLINK_TIMEOUT=m
+CONFIG_NF_CT_NETLINK_HELPER=m
+CONFIG_NETFILTER_NETLINK_GLUE_CT=y
+CONFIG_NF_NAT=m
+CONFIG_NF_NAT_AMANDA=m
+CONFIG_NF_NAT_FTP=m
+CONFIG_NF_NAT_IRC=m
+CONFIG_NF_NAT_SIP=m
+CONFIG_NF_NAT_TFTP=m
+CONFIG_NF_NAT_REDIRECT=y
+CONFIG_NF_NAT_MASQUERADE=y
+CONFIG_NETFILTER_SYNPROXY=m
+CONFIG_NF_TABLES=m
+CONFIG_NF_TABLES_SET=m
+# CONFIG_NF_TABLES_INET is not set
+CONFIG_NF_TABLES_NETDEV=y
+CONFIG_NFT_NUMGEN=m
+CONFIG_NFT_CT=m
+CONFIG_NFT_FLOW_OFFLOAD=m
+CONFIG_NFT_COUNTER=m
+CONFIG_NFT_CONNLIMIT=m
+CONFIG_NFT_LOG=m
+CONFIG_NFT_LIMIT=m
+CONFIG_NFT_MASQ=m
+CONFIG_NFT_REDIR=m
+CONFIG_NFT_NAT=m
+CONFIG_NFT_TUNNEL=m
+CONFIG_NFT_OBJREF=m
+CONFIG_NFT_QUEUE=m
+CONFIG_NFT_QUOTA=m
+CONFIG_NFT_REJECT=m
+CONFIG_NFT_COMPAT=m
+CONFIG_NFT_HASH=m
+CONFIG_NFT_FIB=m
+CONFIG_NFT_XFRM=m
+CONFIG_NFT_SOCKET=m
+CONFIG_NFT_OSF=m
+CONFIG_NFT_TPROXY=m
+CONFIG_NFT_SYNPROXY=m
+CONFIG_NF_DUP_NETDEV=m
+CONFIG_NFT_DUP_NETDEV=m
+CONFIG_NFT_FWD_NETDEV=m
+CONFIG_NFT_FIB_NETDEV=m
+CONFIG_NF_FLOW_TABLE_INET=m
+CONFIG_NF_FLOW_TABLE=m
+CONFIG_NETFILTER_XTABLES=m
+
+#
+# Xtables combined modules
+#
+CONFIG_NETFILTER_XT_MARK=m
+CONFIG_NETFILTER_XT_CONNMARK=m
+CONFIG_NETFILTER_XT_SET=m
+
+#
+# Xtables targets
+#
+CONFIG_NETFILTER_XT_TARGET_AUDIT=m
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m
+CONFIG_NETFILTER_XT_TARGET_CT=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
+CONFIG_NETFILTER_XT_TARGET_HL=m
+CONFIG_NETFILTER_XT_TARGET_HMARK=m
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
+CONFIG_NETFILTER_XT_TARGET_LED=m
+CONFIG_NETFILTER_XT_TARGET_LOG=m
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_NAT=m
+CONFIG_NETFILTER_XT_TARGET_NETMAP=m
+CONFIG_NETFILTER_XT_TARGET_NFLOG=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+# CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
+CONFIG_NETFILTER_XT_TARGET_RATEEST=m
+CONFIG_NETFILTER_XT_TARGET_REDIRECT=m
+CONFIG_NETFILTER_XT_TARGET_MASQUERADE=m
+CONFIG_NETFILTER_XT_TARGET_TEE=m
+CONFIG_NETFILTER_XT_TARGET_TPROXY=m
+CONFIG_NETFILTER_XT_TARGET_TRACE=m
+CONFIG_NETFILTER_XT_TARGET_SECMARK=m
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
+CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
+
+#
+# Xtables matches
+#
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
+CONFIG_NETFILTER_XT_MATCH_BPF=m
+CONFIG_NETFILTER_XT_MATCH_CGROUP=m
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_CPU=m
+CONFIG_NETFILTER_XT_MATCH_DCCP=m
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
+CONFIG_NETFILTER_XT_MATCH_ECN=m
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_HL=m
+CONFIG_NETFILTER_XT_MATCH_IPCOMP=m
+CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
+CONFIG_NETFILTER_XT_MATCH_IPVS=m
+CONFIG_NETFILTER_XT_MATCH_L2TP=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+CONFIG_NETFILTER_XT_MATCH_NFACCT=m
+CONFIG_NETFILTER_XT_MATCH_OSF=m
+CONFIG_NETFILTER_XT_MATCH_OWNER=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+CONFIG_NETFILTER_XT_MATCH_RATEEST=m
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_RECENT=m
+CONFIG_NETFILTER_XT_MATCH_SCTP=m
+CONFIG_NETFILTER_XT_MATCH_SOCKET=m
+CONFIG_NETFILTER_XT_MATCH_STATE=m
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+CONFIG_NETFILTER_XT_MATCH_TIME=m
+CONFIG_NETFILTER_XT_MATCH_U32=m
+# end of Core Netfilter Configuration
+
+CONFIG_IP_SET=m
+CONFIG_IP_SET_MAX=256
+CONFIG_IP_SET_BITMAP_IP=m
+CONFIG_IP_SET_BITMAP_IPMAC=m
+CONFIG_IP_SET_BITMAP_PORT=m
+CONFIG_IP_SET_HASH_IP=m
+CONFIG_IP_SET_HASH_IPMARK=m
+CONFIG_IP_SET_HASH_IPPORT=m
+CONFIG_IP_SET_HASH_IPPORTIP=m
+CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_IPMAC=m
+CONFIG_IP_SET_HASH_MAC=m
+CONFIG_IP_SET_HASH_NETPORTNET=m
+CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETNET=m
+CONFIG_IP_SET_HASH_NETPORT=m
+CONFIG_IP_SET_HASH_NETIFACE=m
+CONFIG_IP_SET_LIST_SET=m
+CONFIG_IP_VS=m
+CONFIG_IP_VS_IPV6=y
+CONFIG_IP_VS_DEBUG=y
+CONFIG_IP_VS_TAB_BITS=12
+
+#
+# IPVS transport protocol load balancing support
+#
+CONFIG_IP_VS_PROTO_TCP=y
+CONFIG_IP_VS_PROTO_UDP=y
+CONFIG_IP_VS_PROTO_AH_ESP=y
+CONFIG_IP_VS_PROTO_ESP=y
+CONFIG_IP_VS_PROTO_AH=y
+CONFIG_IP_VS_PROTO_SCTP=y
+
+#
+# IPVS scheduler
+#
+CONFIG_IP_VS_RR=m
+CONFIG_IP_VS_WRR=m
+CONFIG_IP_VS_LC=m
+CONFIG_IP_VS_WLC=m
+CONFIG_IP_VS_FO=m
+CONFIG_IP_VS_OVF=m
+CONFIG_IP_VS_LBLC=m
+CONFIG_IP_VS_LBLCR=m
+CONFIG_IP_VS_DH=m
+CONFIG_IP_VS_SH=m
+CONFIG_IP_VS_MH=m
+CONFIG_IP_VS_SED=m
+CONFIG_IP_VS_NQ=m
+
+#
+# IPVS SH scheduler
+#
+CONFIG_IP_VS_SH_TAB_BITS=8
+
+#
+# IPVS MH scheduler
+#
+CONFIG_IP_VS_MH_TAB_INDEX=12
+
+#
+# IPVS application helper
+#
+CONFIG_IP_VS_FTP=m
+CONFIG_IP_VS_NFCT=y
+CONFIG_IP_VS_PE_SIP=m
+
+#
+# IP: Netfilter Configuration
+#
+CONFIG_NF_DEFRAG_IPV4=m
+CONFIG_NF_SOCKET_IPV4=m
+CONFIG_NF_TPROXY_IPV4=m
+CONFIG_NF_TABLES_IPV4=y
+CONFIG_NFT_REJECT_IPV4=m
+CONFIG_NFT_DUP_IPV4=m
+CONFIG_NFT_FIB_IPV4=m
+CONFIG_NF_TABLES_ARP=y
+CONFIG_NF_FLOW_TABLE_IPV4=m
+CONFIG_NF_DUP_IPV4=m
+CONFIG_NF_LOG_ARP=m
+CONFIG_NF_LOG_IPV4=m
+CONFIG_NF_REJECT_IPV4=m
+CONFIG_NF_NAT_SNMP_BASIC=m
+CONFIG_NF_NAT_PPTP=m
+CONFIG_NF_NAT_H323=m
+CONFIG_IP_NF_IPTABLES=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_RPFILTER=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_FILTER=m
+CONFIG_IP_NF_TARGET_REJECT=m
+CONFIG_IP_NF_TARGET_SYNPROXY=m
+CONFIG_IP_NF_NAT=m
+CONFIG_IP_NF_TARGET_MASQUERADE=m
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_MANGLE=m
+CONFIG_IP_NF_TARGET_CLUSTERIP=m
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_SECURITY=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARP_MANGLE=m
+# end of IP: Netfilter Configuration
+
+#
+# IPv6: Netfilter Configuration
+#
+CONFIG_NF_SOCKET_IPV6=m
+CONFIG_NF_TPROXY_IPV6=m
+CONFIG_NF_TABLES_IPV6=y
+CONFIG_NFT_REJECT_IPV6=m
+CONFIG_NFT_DUP_IPV6=m
+CONFIG_NFT_FIB_IPV6=m
+CONFIG_NF_FLOW_TABLE_IPV6=m
+CONFIG_NF_DUP_IPV6=m
+CONFIG_NF_REJECT_IPV6=m
+CONFIG_NF_LOG_IPV6=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_MH=m
+CONFIG_IP6_NF_MATCH_RPFILTER=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_MATCH_SRH=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_TARGET_SYNPROXY=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_RAW=m
+CONFIG_IP6_NF_SECURITY=m
+CONFIG_IP6_NF_NAT=m
+CONFIG_IP6_NF_TARGET_MASQUERADE=m
+CONFIG_IP6_NF_TARGET_NPT=m
+# end of IPv6: Netfilter Configuration
+
+CONFIG_NF_DEFRAG_IPV6=m
+
+#
+# DECnet: Netfilter Configuration
+#
+CONFIG_DECNET_NF_GRABULATOR=m
+# end of DECnet: Netfilter Configuration
+
+CONFIG_NF_TABLES_BRIDGE=m
+CONFIG_NFT_BRIDGE_META=m
+CONFIG_NFT_BRIDGE_REJECT=m
+CONFIG_NF_LOG_BRIDGE=m
+CONFIG_NF_CONNTRACK_BRIDGE=m
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_IP6=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_VLAN=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_NFLOG=m
+# CONFIG_BPFILTER is not set
+CONFIG_IP_DCCP=m
+CONFIG_INET_DCCP_DIAG=m
+
+#
+# DCCP CCIDs Configuration
+#
+# CONFIG_IP_DCCP_CCID2_DEBUG is not set
+CONFIG_IP_DCCP_CCID3=y
+# CONFIG_IP_DCCP_CCID3_DEBUG is not set
+CONFIG_IP_DCCP_TFRC_LIB=y
+# end of DCCP CCIDs Configuration
+
+#
+# DCCP Kernel Hacking
+#
+# CONFIG_IP_DCCP_DEBUG is not set
+# end of DCCP Kernel Hacking
+
+CONFIG_IP_SCTP=m
+# CONFIG_SCTP_DBG_OBJCNT is not set
+CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5=y
+# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1 is not set
+# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE is not set
+CONFIG_SCTP_COOKIE_HMAC_MD5=y
+CONFIG_SCTP_COOKIE_HMAC_SHA1=y
+CONFIG_INET_SCTP_DIAG=m
+CONFIG_RDS=m
+CONFIG_RDS_RDMA=m
+CONFIG_RDS_TCP=m
+# CONFIG_RDS_DEBUG is not set
+CONFIG_TIPC=m
+CONFIG_TIPC_MEDIA_IB=y
+CONFIG_TIPC_MEDIA_UDP=y
+CONFIG_TIPC_DIAG=m
+CONFIG_ATM=m
+CONFIG_ATM_CLIP=m
+# CONFIG_ATM_CLIP_NO_ICMP is not set
+CONFIG_ATM_LANE=m
+CONFIG_ATM_MPOA=m
+CONFIG_ATM_BR2684=m
+CONFIG_ATM_BR2684_IPFILTER=y
+CONFIG_L2TP=m
+CONFIG_L2TP_DEBUGFS=m
+# CONFIG_L2TP_V3 is not set
+CONFIG_STP=m
+CONFIG_GARP=m
+CONFIG_MRP=m
+CONFIG_BRIDGE=m
+CONFIG_BRIDGE_IGMP_SNOOPING=y
+CONFIG_BRIDGE_VLAN_FILTERING=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_NET_DSA=m
+# CONFIG_NET_DSA_TAG_8021Q is not set
+CONFIG_NET_DSA_TAG_BRCM_COMMON=m
+CONFIG_NET_DSA_TAG_BRCM=m
+CONFIG_NET_DSA_TAG_BRCM_PREPEND=m
+CONFIG_NET_DSA_TAG_GSWIP=m
+CONFIG_NET_DSA_TAG_DSA=m
+CONFIG_NET_DSA_TAG_EDSA=m
+# CONFIG_NET_DSA_TAG_MTK is not set
+# CONFIG_NET_DSA_TAG_KSZ is not set
+# CONFIG_NET_DSA_TAG_QCA is not set
+# CONFIG_NET_DSA_TAG_LAN9303 is not set
+# CONFIG_NET_DSA_TAG_SJA1105 is not set
+CONFIG_NET_DSA_TAG_TRAILER=m
+CONFIG_VLAN_8021Q=m
+CONFIG_VLAN_8021Q_GVRP=y
+CONFIG_VLAN_8021Q_MVRP=y
+CONFIG_DECNET=m
+# CONFIG_DECNET_ROUTER is not set
+CONFIG_LLC=m
+CONFIG_LLC2=m
+CONFIG_ATALK=m
+CONFIG_DEV_APPLETALK=m
+CONFIG_IPDDP=m
+CONFIG_IPDDP_ENCAP=y
+CONFIG_X25=m
+CONFIG_LAPB=m
+CONFIG_PHONET=m
+CONFIG_6LOWPAN=m
+# CONFIG_6LOWPAN_DEBUGFS is not set
+CONFIG_6LOWPAN_NHC=m
+CONFIG_6LOWPAN_NHC_DEST=m
+CONFIG_6LOWPAN_NHC_FRAGMENT=m
+CONFIG_6LOWPAN_NHC_HOP=m
+CONFIG_6LOWPAN_NHC_IPV6=m
+CONFIG_6LOWPAN_NHC_MOBILITY=m
+CONFIG_6LOWPAN_NHC_ROUTING=m
+CONFIG_6LOWPAN_NHC_UDP=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_HOP=m
+CONFIG_6LOWPAN_GHC_UDP=m
+CONFIG_6LOWPAN_GHC_ICMPV6=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_DEST=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_ROUTE=m
+CONFIG_IEEE802154=m
+CONFIG_IEEE802154_NL802154_EXPERIMENTAL=y
+CONFIG_IEEE802154_SOCKET=m
+CONFIG_IEEE802154_6LOWPAN=m
+CONFIG_MAC802154=m
+CONFIG_NET_SCHED=y
+
+#
+# Queueing/Scheduling
+#
+CONFIG_NET_SCH_CBQ=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_HFSC=m
+# CONFIG_NET_SCH_ATM is not set
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFB=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TEQL=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_CBS=m
+CONFIG_NET_SCH_ETF=m
+CONFIG_NET_SCH_TAPRIO=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_DRR=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_SKBPRIO=m
+CONFIG_NET_SCH_CHOKE=m
+CONFIG_NET_SCH_QFQ=m
+CONFIG_NET_SCH_CODEL=m
+CONFIG_NET_SCH_FQ_CODEL=m
+CONFIG_NET_SCH_CAKE=m
+CONFIG_NET_SCH_FQ=m
+CONFIG_NET_SCH_HHF=m
+CONFIG_NET_SCH_PIE=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_PLUG=m
+# CONFIG_NET_SCH_DEFAULT is not set
+
+#
+# Classification
+#
+CONFIG_NET_CLS=y
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_U32=m
+# CONFIG_CLS_U32_PERF is not set
+# CONFIG_CLS_U32_MARK is not set
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+CONFIG_NET_CLS_FLOW=m
+CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_CLS_BPF=m
+CONFIG_NET_CLS_FLOWER=m
+CONFIG_NET_CLS_MATCHALL=m
+CONFIG_NET_EMATCH=y
+CONFIG_NET_EMATCH_STACK=32
+CONFIG_NET_EMATCH_CMP=m
+CONFIG_NET_EMATCH_NBYTE=m
+CONFIG_NET_EMATCH_U32=m
+CONFIG_NET_EMATCH_META=m
+CONFIG_NET_EMATCH_TEXT=m
+CONFIG_NET_EMATCH_CANID=m
+CONFIG_NET_EMATCH_IPSET=m
+CONFIG_NET_EMATCH_IPT=m
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_ACT_POLICE=y
+CONFIG_NET_ACT_GACT=m
+CONFIG_GACT_PROB=y
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_SAMPLE=m
+CONFIG_NET_ACT_IPT=m
+CONFIG_NET_ACT_NAT=m
+CONFIG_NET_ACT_PEDIT=m
+CONFIG_NET_ACT_SIMP=m
+CONFIG_NET_ACT_SKBEDIT=m
+CONFIG_NET_ACT_CSUM=m
+CONFIG_NET_ACT_MPLS=m
+CONFIG_NET_ACT_VLAN=m
+CONFIG_NET_ACT_BPF=m
+CONFIG_NET_ACT_CONNMARK=m
+CONFIG_NET_ACT_CTINFO=m
+# CONFIG_NET_ACT_SKBMOD is not set
+CONFIG_NET_ACT_IFE=m
+# CONFIG_NET_ACT_TUNNEL_KEY is not set
+CONFIG_NET_ACT_CT=m
+CONFIG_NET_IFE_SKBMARK=m
+CONFIG_NET_IFE_SKBPRIO=m
+CONFIG_NET_IFE_SKBTCINDEX=m
+# CONFIG_NET_TC_SKB_EXT is not set
+CONFIG_NET_SCH_FIFO=y
+CONFIG_DCB=y
+CONFIG_DNS_RESOLVER=y
+# CONFIG_BATMAN_ADV is not set
+CONFIG_OPENVSWITCH=m
+CONFIG_OPENVSWITCH_GRE=m
+CONFIG_OPENVSWITCH_VXLAN=m
+CONFIG_OPENVSWITCH_GENEVE=m
+CONFIG_VSOCKETS=m
+CONFIG_VSOCKETS_DIAG=m
+CONFIG_VMWARE_VMCI_VSOCKETS=m
+CONFIG_VIRTIO_VSOCKETS=m
+CONFIG_VIRTIO_VSOCKETS_COMMON=m
+CONFIG_HYPERV_VSOCKETS=m
+CONFIG_NETLINK_DIAG=m
+CONFIG_MPLS=y
+CONFIG_NET_MPLS_GSO=y
+CONFIG_MPLS_ROUTING=m
+CONFIG_MPLS_IPTUNNEL=m
+CONFIG_NET_NSH=m
+CONFIG_HSR=m
+CONFIG_NET_SWITCHDEV=y
+CONFIG_NET_L3_MASTER_DEV=y
+# CONFIG_NET_NCSI is not set
+CONFIG_RPS=y
+CONFIG_RFS_ACCEL=y
+CONFIG_XPS=y
+# CONFIG_CGROUP_NET_PRIO is not set
+CONFIG_CGROUP_NET_CLASSID=y
+CONFIG_NET_RX_BUSY_POLL=y
+CONFIG_BQL=y
+CONFIG_BPF_JIT=y
+CONFIG_BPF_STREAM_PARSER=y
+CONFIG_NET_FLOW_LIMIT=y
+
+#
+# Network testing
+#
+CONFIG_NET_PKTGEN=m
+# CONFIG_NET_DROP_MONITOR is not set
+# end of Network testing
+# end of Networking options
+
+CONFIG_HAMRADIO=y
+
+#
+# Packet Radio protocols
+#
+CONFIG_AX25=m
+CONFIG_AX25_DAMA_SLAVE=y
+CONFIG_NETROM=m
+CONFIG_ROSE=m
+
+#
+# AX.25 network device drivers
+#
+CONFIG_MKISS=m
+CONFIG_6PACK=m
+CONFIG_BPQETHER=m
+CONFIG_BAYCOM_SER_FDX=m
+CONFIG_BAYCOM_SER_HDX=m
+CONFIG_BAYCOM_PAR=m
+CONFIG_YAM=m
+# end of AX.25 network device drivers
+
+CONFIG_CAN=m
+CONFIG_CAN_RAW=m
+CONFIG_CAN_BCM=m
+CONFIG_CAN_GW=m
+# CONFIG_CAN_J1939 is not set
+
+#
+# CAN Device Drivers
+#
+CONFIG_CAN_VCAN=m
+CONFIG_CAN_VXCAN=m
+CONFIG_CAN_SLCAN=m
+CONFIG_CAN_DEV=m
+# CONFIG_CAN_CALC_BITTIMING is not set
+# CONFIG_CAN_KVASER_PCIEFD is not set
+CONFIG_CAN_C_CAN=m
+CONFIG_CAN_C_CAN_PLATFORM=m
+CONFIG_CAN_C_CAN_PCI=m
+CONFIG_CAN_CC770=m
+CONFIG_CAN_CC770_ISA=m
+CONFIG_CAN_CC770_PLATFORM=m
+CONFIG_CAN_IFI_CANFD=m
+CONFIG_CAN_M_CAN=m
+# CONFIG_CAN_M_CAN_PLATFORM is not set
+# CONFIG_CAN_M_CAN_TCAN4X5X is not set
+CONFIG_CAN_PEAK_PCIEFD=m
+CONFIG_CAN_SJA1000=m
+CONFIG_CAN_EMS_PCI=m
+CONFIG_CAN_EMS_PCMCIA=m
+# CONFIG_CAN_F81601 is not set
+CONFIG_CAN_KVASER_PCI=m
+CONFIG_CAN_PEAK_PCI=m
+CONFIG_CAN_PEAK_PCIEC=y
+CONFIG_CAN_PEAK_PCMCIA=m
+CONFIG_CAN_PLX_PCI=m
+CONFIG_CAN_SJA1000_ISA=m
+# CONFIG_CAN_SJA1000_PLATFORM is not set
+CONFIG_CAN_SOFTING=m
+CONFIG_CAN_SOFTING_CS=m
+
+#
+# CAN SPI interfaces
+#
+# CONFIG_CAN_HI311X is not set
+CONFIG_CAN_MCP251X=m
+# end of CAN SPI interfaces
+
+#
+# CAN USB interfaces
+#
+CONFIG_CAN_8DEV_USB=m
+CONFIG_CAN_EMS_USB=m
+CONFIG_CAN_ESD_USB2=m
+CONFIG_CAN_GS_USB=m
+CONFIG_CAN_KVASER_USB=m
+# CONFIG_CAN_MCBA_USB is not set
+CONFIG_CAN_PEAK_USB=m
+# CONFIG_CAN_UCAN is not set
+# end of CAN USB interfaces
+
+# CONFIG_CAN_DEBUG_DEVICES is not set
+# end of CAN Device Drivers
+
+CONFIG_BT=m
+CONFIG_BT_BREDR=y
+CONFIG_BT_RFCOMM=m
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_BNEP=m
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+CONFIG_BT_CMTP=m
+CONFIG_BT_HIDP=m
+CONFIG_BT_HS=y
+CONFIG_BT_LE=y
+CONFIG_BT_6LOWPAN=m
+CONFIG_BT_LEDS=y
+# CONFIG_BT_SELFTEST is not set
+# CONFIG_BT_DEBUGFS is not set
+
+#
+# Bluetooth device drivers
+#
+CONFIG_BT_INTEL=m
+CONFIG_BT_BCM=m
+CONFIG_BT_RTL=m
+CONFIG_BT_QCA=m
+CONFIG_BT_HCIBTUSB=m
+# CONFIG_BT_HCIBTUSB_AUTOSUSPEND is not set
+CONFIG_BT_HCIBTUSB_BCM=y
+CONFIG_BT_HCIBTUSB_MTK=y
+CONFIG_BT_HCIBTUSB_RTL=y
+CONFIG_BT_HCIBTSDIO=m
+CONFIG_BT_HCIUART=m
+CONFIG_BT_HCIUART_SERDEV=y
+CONFIG_BT_HCIUART_H4=y
+# CONFIG_BT_HCIUART_NOKIA is not set
+CONFIG_BT_HCIUART_BCSP=y
+CONFIG_BT_HCIUART_ATH3K=y
+CONFIG_BT_HCIUART_LL=y
+CONFIG_BT_HCIUART_3WIRE=y
+CONFIG_BT_HCIUART_INTEL=y
+CONFIG_BT_HCIUART_RTL=y
+CONFIG_BT_HCIUART_QCA=y
+CONFIG_BT_HCIUART_AG6XX=y
+CONFIG_BT_HCIUART_MRVL=y
+CONFIG_BT_HCIBCM203X=m
+CONFIG_BT_HCIBPA10X=m
+CONFIG_BT_HCIBFUSB=m
+CONFIG_BT_HCIDTL1=m
+CONFIG_BT_HCIBT3C=m
+CONFIG_BT_HCIBLUECARD=m
+CONFIG_BT_HCIVHCI=m
+CONFIG_BT_MRVL=m
+CONFIG_BT_MRVL_SDIO=m
+CONFIG_BT_ATH3K=m
+CONFIG_BT_WILINK=m
+CONFIG_BT_MTKSDIO=m
+CONFIG_BT_MTKUART=m
+CONFIG_BT_HCIRSI=m
+# end of Bluetooth device drivers
+
+CONFIG_AF_RXRPC=m
+CONFIG_AF_RXRPC_IPV6=y
+# CONFIG_AF_RXRPC_INJECT_LOSS is not set
+# CONFIG_AF_RXRPC_DEBUG is not set
+# CONFIG_RXKAD is not set
+CONFIG_AF_KCM=m
+CONFIG_STREAM_PARSER=y
+CONFIG_FIB_RULES=y
+CONFIG_WIRELESS=y
+CONFIG_WIRELESS_EXT=y
+CONFIG_WEXT_CORE=y
+CONFIG_WEXT_PROC=y
+CONFIG_WEXT_SPY=y
+CONFIG_WEXT_PRIV=y
+CONFIG_CFG80211=m
+# CONFIG_NL80211_TESTMODE is not set
+# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
+# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
+CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y
+CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y
+CONFIG_CFG80211_DEFAULT_PS=y
+# CONFIG_CFG80211_DEBUGFS is not set
+CONFIG_CFG80211_CRDA_SUPPORT=y
+CONFIG_CFG80211_WEXT=y
+CONFIG_CFG80211_WEXT_EXPORT=y
+CONFIG_LIB80211=m
+CONFIG_LIB80211_CRYPT_WEP=m
+CONFIG_LIB80211_CRYPT_CCMP=m
+CONFIG_LIB80211_CRYPT_TKIP=m
+# CONFIG_LIB80211_DEBUG is not set
+CONFIG_MAC80211=m
+CONFIG_MAC80211_HAS_RC=y
+CONFIG_MAC80211_RC_MINSTREL=y
+CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
+CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
+CONFIG_MAC80211_MESH=y
+CONFIG_MAC80211_LEDS=y
+# CONFIG_MAC80211_DEBUGFS is not set
+# CONFIG_MAC80211_MESSAGE_TRACING is not set
+# CONFIG_MAC80211_DEBUG_MENU is not set
+CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
+CONFIG_WIMAX=m
+CONFIG_WIMAX_DEBUG_LEVEL=8
+CONFIG_RFKILL=m
+CONFIG_RFKILL_LEDS=y
+CONFIG_RFKILL_INPUT=y
+CONFIG_RFKILL_GPIO=m
+CONFIG_NET_9P=m
+CONFIG_NET_9P_VIRTIO=m
+CONFIG_NET_9P_XEN=m
+CONFIG_NET_9P_RDMA=m
+# CONFIG_NET_9P_DEBUG is not set
+CONFIG_CAIF=m
+# CONFIG_CAIF_DEBUG is not set
+CONFIG_CAIF_NETDEV=m
+CONFIG_CAIF_USB=m
+CONFIG_CEPH_LIB=m
+# CONFIG_CEPH_LIB_PRETTYDEBUG is not set
+# CONFIG_CEPH_LIB_USE_DNS_RESOLVER is not set
+CONFIG_NFC=m
+CONFIG_NFC_DIGITAL=m
+CONFIG_NFC_NCI=m
+# CONFIG_NFC_NCI_SPI is not set
+CONFIG_NFC_NCI_UART=m
+CONFIG_NFC_HCI=m
+CONFIG_NFC_SHDLC=y
+
+#
+# Near Field Communication (NFC) devices
+#
+CONFIG_NFC_TRF7970A=m
+CONFIG_NFC_MEI_PHY=m
+CONFIG_NFC_SIM=m
+CONFIG_NFC_PORT100=m
+CONFIG_NFC_FDP=m
+CONFIG_NFC_FDP_I2C=m
+CONFIG_NFC_PN544=m
+CONFIG_NFC_PN544_I2C=m
+CONFIG_NFC_PN544_MEI=m
+CONFIG_NFC_PN533=m
+CONFIG_NFC_PN533_USB=m
+CONFIG_NFC_PN533_I2C=m
+CONFIG_NFC_MICROREAD=m
+CONFIG_NFC_MICROREAD_I2C=m
+CONFIG_NFC_MICROREAD_MEI=m
+CONFIG_NFC_MRVL=m
+CONFIG_NFC_MRVL_USB=m
+CONFIG_NFC_MRVL_UART=m
+CONFIG_NFC_MRVL_I2C=m
+CONFIG_NFC_ST21NFCA=m
+CONFIG_NFC_ST21NFCA_I2C=m
+CONFIG_NFC_ST_NCI=m
+CONFIG_NFC_ST_NCI_I2C=m
+CONFIG_NFC_ST_NCI_SPI=m
+# CONFIG_NFC_NXP_NCI is not set
+CONFIG_NFC_S3FWRN5=m
+CONFIG_NFC_S3FWRN5_I2C=m
+CONFIG_NFC_ST95HF=m
+# end of Near Field Communication (NFC) devices
+
+CONFIG_PSAMPLE=m
+CONFIG_NET_IFE=m
+CONFIG_LWTUNNEL=y
+CONFIG_LWTUNNEL_BPF=y
+CONFIG_DST_CACHE=y
+CONFIG_GRO_CELLS=y
+CONFIG_NET_SOCK_MSG=y
+CONFIG_NET_DEVLINK=y
+CONFIG_PAGE_POOL=y
+CONFIG_FAILOVER=m
+CONFIG_HAVE_EBPF_JIT=y
+
+#
+# Device Drivers
+#
+CONFIG_HAVE_EISA=y
+# CONFIG_EISA is not set
+CONFIG_HAVE_PCI=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_HOTPLUG_PCI_PCIE=y
+CONFIG_PCIEAER=y
+# CONFIG_PCIEAER_INJECT is not set
+CONFIG_PCIE_ECRC=y
+CONFIG_PCIEASPM=y
+# CONFIG_PCIEASPM_DEBUG is not set
+CONFIG_PCIEASPM_DEFAULT=y
+# CONFIG_PCIEASPM_POWERSAVE is not set
+# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
+# CONFIG_PCIEASPM_PERFORMANCE is not set
+CONFIG_PCIE_PME=y
+CONFIG_PCIE_DPC=y
+# CONFIG_PCIE_PTM is not set
+# CONFIG_PCIE_BW is not set
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PCI_QUIRKS=y
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
+CONFIG_PCI_STUB=m
+CONFIG_PCI_PF_STUB=m
+CONFIG_XEN_PCIDEV_FRONTEND=m
+CONFIG_PCI_ATS=y
+CONFIG_PCI_LOCKLESS_CONFIG=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_PRI=y
+CONFIG_PCI_PASID=y
+CONFIG_PCI_LABEL=y
+CONFIG_PCI_HYPERV=m
+CONFIG_HOTPLUG_PCI=y
+CONFIG_HOTPLUG_PCI_ACPI=y
+CONFIG_HOTPLUG_PCI_ACPI_IBM=m
+CONFIG_HOTPLUG_PCI_CPCI=y
+CONFIG_HOTPLUG_PCI_CPCI_ZT5550=m
+CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m
+# CONFIG_HOTPLUG_PCI_SHPC is not set
+
+#
+# PCI controller drivers
+#
+
+#
+# Cadence PCIe controllers support
+#
+# end of Cadence PCIe controllers support
+
+CONFIG_VMD=m
+CONFIG_PCI_HYPERV_INTERFACE=m
+
+#
+# DesignWare PCI Core Support
+#
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_DW_HOST=y
+CONFIG_PCIE_DW_PLAT=y
+CONFIG_PCIE_DW_PLAT_HOST=y
+# CONFIG_PCI_MESON is not set
+# end of DesignWare PCI Core Support
+# end of PCI controller drivers
+
+#
+# PCI Endpoint
+#
+# CONFIG_PCI_ENDPOINT is not set
+# end of PCI Endpoint
+
+#
+# PCI switch controller drivers
+#
+# CONFIG_PCI_SW_SWITCHTEC is not set
+# end of PCI switch controller drivers
+
+CONFIG_PCCARD=m
+CONFIG_PCMCIA=m
+CONFIG_PCMCIA_LOAD_CIS=y
+CONFIG_CARDBUS=y
+
+#
+# PC-card bridges
+#
+CONFIG_YENTA=m
+CONFIG_YENTA_O2=y
+CONFIG_YENTA_RICOH=y
+CONFIG_YENTA_TI=y
+CONFIG_YENTA_ENE_TUNE=y
+CONFIG_YENTA_TOSHIBA=y
+CONFIG_PD6729=m
+CONFIG_I82092=m
+CONFIG_PCCARD_NONSTATIC=y
+CONFIG_RAPIDIO=y
+CONFIG_RAPIDIO_TSI721=y
+CONFIG_RAPIDIO_DISC_TIMEOUT=30
+# CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS is not set
+CONFIG_RAPIDIO_DMA_ENGINE=y
+# CONFIG_RAPIDIO_DEBUG is not set
+CONFIG_RAPIDIO_ENUM_BASIC=m
+CONFIG_RAPIDIO_CHMAN=m
+CONFIG_RAPIDIO_MPORT_CDEV=m
+
+#
+# RapidIO Switch drivers
+#
+CONFIG_RAPIDIO_TSI57X=y
+CONFIG_RAPIDIO_CPS_XX=y
+CONFIG_RAPIDIO_TSI568=y
+CONFIG_RAPIDIO_CPS_GEN2=y
+CONFIG_RAPIDIO_RXS_GEN3=y
+# end of RapidIO Switch drivers
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_DEVTMPFS=y
+# CONFIG_DEVTMPFS_MOUNT is not set
+# CONFIG_STANDALONE is not set
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+
+#
+# Firmware loader
+#
+CONFIG_FW_LOADER=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_EXTRA_FIRMWARE=""
+CONFIG_FW_LOADER_USER_HELPER=y
+# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
+CONFIG_FW_LOADER_COMPRESS=y
+# end of Firmware loader
+
+CONFIG_WANT_DEV_COREDUMP=y
+CONFIG_ALLOW_DEV_COREDUMP=y
+CONFIG_DEV_COREDUMP=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
+# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
+CONFIG_SYS_HYPERVISOR=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_SPI=y
+CONFIG_REGMAP_SPMI=m
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGMAP_IRQ=y
+CONFIG_REGMAP_SCCB=m
+CONFIG_DMA_SHARED_BUFFER=y
+# CONFIG_DMA_FENCE_TRACE is not set
+# end of Generic Driver Options
+
+#
+# Bus devices
+#
+# end of Bus devices
+
+CONFIG_CONNECTOR=m
+CONFIG_GNSS=m
+CONFIG_GNSS_SERIAL=m
+# CONFIG_GNSS_MTK_SERIAL is not set
+CONFIG_GNSS_SIRF_SERIAL=m
+CONFIG_GNSS_UBX_SERIAL=m
+CONFIG_MTD=m
+CONFIG_MTD_TESTS=m
+
+#
+# Partition parsers
+#
+CONFIG_MTD_AR7_PARTS=m
+# CONFIG_MTD_CMDLINE_PARTS is not set
+CONFIG_MTD_REDBOOT_PARTS=m
+CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
+# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
+# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
+# end of Partition parsers
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+CONFIG_MTD_BLOCK_RO=m
+CONFIG_FTL=m
+CONFIG_NFTL=m
+# CONFIG_NFTL_RW is not set
+CONFIG_INFTL=m
+CONFIG_RFD_FTL=m
+CONFIG_SSFDC=m
+CONFIG_SM_FTL=m
+CONFIG_MTD_OOPS=m
+CONFIG_MTD_SWAP=m
+# CONFIG_MTD_PARTITIONED_MASTER is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=m
+CONFIG_MTD_JEDECPROBE=m
+CONFIG_MTD_GEN_PROBE=m
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+CONFIG_MTD_CFI_INTELEXT=m
+CONFIG_MTD_CFI_AMDSTD=m
+CONFIG_MTD_CFI_STAA=m
+CONFIG_MTD_CFI_UTIL=m
+CONFIG_MTD_RAM=m
+CONFIG_MTD_ROM=m
+CONFIG_MTD_ABSENT=m
+# end of RAM/ROM/Flash chip drivers
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_AMD76XROM=m
+CONFIG_MTD_ICHXROM=m
+CONFIG_MTD_ESB2ROM=m
+CONFIG_MTD_CK804XROM=m
+CONFIG_MTD_SCB2_FLASH=m
+CONFIG_MTD_NETtel=m
+CONFIG_MTD_L440GX=m
+CONFIG_MTD_INTEL_VR_NOR=m
+# CONFIG_MTD_PLATRAM is not set
+# end of Mapping drivers for chip access
+
+#
+# Self-contained MTD device drivers
+#
+CONFIG_MTD_PMC551=m
+# CONFIG_MTD_PMC551_BUGFIX is not set
+# CONFIG_MTD_PMC551_DEBUG is not set
+CONFIG_MTD_DATAFLASH=m
+# CONFIG_MTD_DATAFLASH_WRITE_VERIFY is not set
+# CONFIG_MTD_DATAFLASH_OTP is not set
+# CONFIG_MTD_MCHP23K256 is not set
+CONFIG_MTD_SST25L=m
+CONFIG_MTD_SLRAM=m
+CONFIG_MTD_PHRAM=m
+CONFIG_MTD_MTDRAM=m
+CONFIG_MTDRAM_TOTAL_SIZE=4096
+CONFIG_MTDRAM_ERASE_SIZE=128
+CONFIG_MTD_BLOCK2MTD=m
+
+#
+# Disk-On-Chip Device Drivers
+#
+CONFIG_MTD_DOCG3=m
+CONFIG_BCH_CONST_M=14
+CONFIG_BCH_CONST_T=4
+# end of Self-contained MTD device drivers
+
+CONFIG_MTD_NAND_CORE=m
+CONFIG_MTD_ONENAND=m
+# CONFIG_MTD_ONENAND_VERIFY_WRITE is not set
+# CONFIG_MTD_ONENAND_GENERIC is not set
+CONFIG_MTD_ONENAND_OTP=y
+CONFIG_MTD_ONENAND_2X_PROGRAM=y
+CONFIG_MTD_NAND_ECC_SW_HAMMING=m
+# CONFIG_MTD_NAND_ECC_SW_HAMMING_SMC is not set
+CONFIG_MTD_RAW_NAND=m
+CONFIG_MTD_NAND_ECC_SW_BCH=y
+
+#
+# Raw/parallel NAND flash controllers
+#
+CONFIG_MTD_NAND_DENALI=m
+CONFIG_MTD_NAND_DENALI_PCI=m
+CONFIG_MTD_NAND_CAFE=m
+CONFIG_MTD_NAND_MXIC=m
+CONFIG_MTD_NAND_GPIO=m
+# CONFIG_MTD_NAND_PLATFORM is not set
+
+#
+# Misc
+#
+CONFIG_MTD_SM_COMMON=m
+CONFIG_MTD_NAND_NANDSIM=m
+CONFIG_MTD_NAND_RICOH=m
+CONFIG_MTD_NAND_DISKONCHIP=m
+# CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADVANCED is not set
+CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0
+# CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE is not set
+CONFIG_MTD_SPI_NAND=m
+
+#
+# LPDDR & LPDDR2 PCM memory drivers
+#
+CONFIG_MTD_LPDDR=m
+CONFIG_MTD_QINFO_PROBE=m
+# end of LPDDR & LPDDR2 PCM memory drivers
+
+CONFIG_MTD_SPI_NOR=m
+CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
+# CONFIG_SPI_MTK_QUADSPI is not set
+# CONFIG_SPI_INTEL_SPI_PCI is not set
+# CONFIG_SPI_INTEL_SPI_PLATFORM is not set
+CONFIG_MTD_UBI=m
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_MTD_UBI_BEB_LIMIT=20
+# CONFIG_MTD_UBI_FASTMAP is not set
+# CONFIG_MTD_UBI_GLUEBI is not set
+# CONFIG_MTD_UBI_BLOCK is not set
+# CONFIG_MTD_HYPERBUS is not set
+# CONFIG_OF is not set
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_PARPORT=m
+CONFIG_PARPORT_PC=m
+CONFIG_PARPORT_SERIAL=m
+CONFIG_PARPORT_PC_FIFO=y
+CONFIG_PARPORT_PC_SUPERIO=y
+CONFIG_PARPORT_PC_PCMCIA=m
+# CONFIG_PARPORT_AX88796 is not set
+CONFIG_PARPORT_1284=y
+CONFIG_PARPORT_NOT_PC=y
+CONFIG_PNP=y
+CONFIG_PNP_DEBUG_MESSAGES=y
+
+#
+# Protocols
+#
+CONFIG_PNPACPI=y
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_NULL_BLK is not set
+CONFIG_BLK_DEV_FD=m
+CONFIG_CDROM=y
+CONFIG_PARIDE=m
+
+#
+# Parallel IDE high-level drivers
+#
+CONFIG_PARIDE_PD=m
+CONFIG_PARIDE_PCD=m
+CONFIG_PARIDE_PF=m
+CONFIG_PARIDE_PT=m
+CONFIG_PARIDE_PG=m
+
+#
+# Parallel IDE protocol modules
+#
+CONFIG_PARIDE_ATEN=m
+CONFIG_PARIDE_BPCK=m
+CONFIG_PARIDE_COMM=m
+CONFIG_PARIDE_DSTR=m
+CONFIG_PARIDE_FIT2=m
+CONFIG_PARIDE_FIT3=m
+CONFIG_PARIDE_EPAT=m
+CONFIG_PARIDE_EPATC8=y
+CONFIG_PARIDE_EPIA=m
+CONFIG_PARIDE_FRIQ=m
+CONFIG_PARIDE_FRPW=m
+CONFIG_PARIDE_KBIC=m
+CONFIG_PARIDE_KTTI=m
+CONFIG_PARIDE_ON20=m
+CONFIG_PARIDE_ON26=m
+CONFIG_BLK_DEV_PCIESSD_MTIP32XX=m
+CONFIG_ZRAM=m
+# CONFIG_ZRAM_WRITEBACK is not set
+# CONFIG_ZRAM_MEMORY_TRACKING is not set
+CONFIG_BLK_DEV_UMEM=m
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+# CONFIG_BLK_DEV_DRBD is not set
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_SKD=m
+CONFIG_BLK_DEV_SX8=m
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=32000
+CONFIG_CDROM_PKTCDVD=y
+CONFIG_CDROM_PKTCDVD_BUFFERS=8
+# CONFIG_CDROM_PKTCDVD_WCACHE is not set
+CONFIG_ATA_OVER_ETH=m
+CONFIG_XEN_BLKDEV_FRONTEND=m
+CONFIG_XEN_BLKDEV_BACKEND=m
+CONFIG_VIRTIO_BLK=m
+# CONFIG_VIRTIO_BLK_SCSI is not set
+CONFIG_BLK_DEV_RBD=m
+CONFIG_BLK_DEV_RSXX=m
+
+#
+# NVME Support
+#
+CONFIG_NVME_CORE=y
+CONFIG_BLK_DEV_NVME=y
+# CONFIG_NVME_MULTIPATH is not set
+CONFIG_NVME_FABRICS=m
+CONFIG_NVME_RDMA=m
+CONFIG_NVME_FC=m
+CONFIG_NVME_TCP=m
+CONFIG_NVME_TARGET=m
+CONFIG_NVME_TARGET_LOOP=m
+CONFIG_NVME_TARGET_RDMA=m
+CONFIG_NVME_TARGET_FC=m
+# CONFIG_NVME_TARGET_FCLOOP is not set
+CONFIG_NVME_TARGET_TCP=m
+# end of NVME Support
+
+#
+# Misc devices
+#
+CONFIG_SENSORS_LIS3LV02D=m
+# CONFIG_AD525X_DPOT is not set
+CONFIG_DUMMY_IRQ=m
+CONFIG_IBM_ASM=m
+CONFIG_PHANTOM=m
+CONFIG_TIFM_CORE=m
+CONFIG_TIFM_7XX1=m
+CONFIG_ICS932S401=m
+CONFIG_ENCLOSURE_SERVICES=m
+CONFIG_HP_ILO=m
+CONFIG_APDS9802ALS=m
+# CONFIG_ISL29003 is not set
+CONFIG_ISL29020=m
+CONFIG_SENSORS_TSL2550=m
+CONFIG_SENSORS_BH1770=m
+CONFIG_SENSORS_APDS990X=m
+CONFIG_HMC6352=m
+CONFIG_DS1682=m
+CONFIG_VMWARE_BALLOON=m
+CONFIG_LATTICE_ECP3_CONFIG=m
+CONFIG_SRAM=y
+# CONFIG_PCI_ENDPOINT_TEST is not set
+# CONFIG_XILINX_SDFEC is not set
+CONFIG_MISC_RTSX=m
+CONFIG_PVPANIC=m
+CONFIG_C2PORT=m
+CONFIG_C2PORT_DURAMAR_2150=m
+
+#
+# EEPROM support
+#
+# CONFIG_EEPROM_AT24 is not set
+CONFIG_EEPROM_AT25=m
+CONFIG_EEPROM_LEGACY=m
+CONFIG_EEPROM_MAX6875=m
+CONFIG_EEPROM_93CX6=m
+CONFIG_EEPROM_93XX46=m
+CONFIG_EEPROM_IDT_89HPESX=m
+CONFIG_EEPROM_EE1004=m
+# end of EEPROM support
+
+CONFIG_CB710_CORE=m
+# CONFIG_CB710_DEBUG is not set
+CONFIG_CB710_DEBUG_ASSUMPTIONS=y
+
+#
+# Texas Instruments shared transport line discipline
+#
+CONFIG_TI_ST=m
+# end of Texas Instruments shared transport line discipline
+
+CONFIG_SENSORS_LIS3_I2C=m
+CONFIG_ALTERA_STAPL=m
+CONFIG_INTEL_MEI=m
+CONFIG_INTEL_MEI_ME=m
+CONFIG_INTEL_MEI_TXE=m
+CONFIG_INTEL_MEI_HDCP=m
+CONFIG_VMWARE_VMCI=m
+
+#
+# Intel MIC & related support
+#
+
+#
+# Intel MIC Bus Driver
+#
+CONFIG_INTEL_MIC_BUS=m
+
+#
+# SCIF Bus Driver
+#
+CONFIG_SCIF_BUS=m
+
+#
+# VOP Bus Driver
+#
+# CONFIG_VOP_BUS is not set
+
+#
+# Intel MIC Host Driver
+#
+
+#
+# Intel MIC Card Driver
+#
+
+#
+# SCIF Driver
+#
+CONFIG_SCIF=m
+
+#
+# Intel MIC Coprocessor State Management (COSM) Drivers
+#
+CONFIG_MIC_COSM=m
+
+#
+# VOP Driver
+#
+CONFIG_VHOST_RING=m
+# end of Intel MIC & related support
+
+CONFIG_GENWQE=m
+CONFIG_GENWQE_PLATFORM_ERROR_RECOVERY=1
+CONFIG_ECHO=m
+CONFIG_MISC_ALCOR_PCI=m
+CONFIG_MISC_RTSX_PCI=m
+CONFIG_MISC_RTSX_USB=m
+# CONFIG_HABANA_AI is not set
+# end of Misc devices
+
+CONFIG_HAVE_IDE=y
+CONFIG_IDE=m
+
+#
+# Please see Documentation/ide/ide.rst for help/info on IDE drives
+#
+CONFIG_IDE_XFER_MODE=y
+CONFIG_IDE_TIMINGS=y
+CONFIG_IDE_ATAPI=y
+# CONFIG_BLK_DEV_IDE_SATA is not set
+CONFIG_IDE_GD=m
+CONFIG_IDE_GD_ATA=y
+CONFIG_IDE_GD_ATAPI=y
+CONFIG_BLK_DEV_IDECS=m
+CONFIG_BLK_DEV_DELKIN=m
+CONFIG_BLK_DEV_IDECD=m
+CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=y
+CONFIG_BLK_DEV_IDETAPE=m
+CONFIG_BLK_DEV_IDEACPI=y
+CONFIG_IDE_TASK_IOCTL=y
+CONFIG_IDE_PROC_FS=y
+
+#
+# IDE chipset support/bugfixes
+#
+CONFIG_IDE_GENERIC=m
+# CONFIG_BLK_DEV_PLATFORM is not set
+CONFIG_BLK_DEV_CMD640=m
+# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
+# CONFIG_BLK_DEV_IDEPNP is not set
+CONFIG_BLK_DEV_IDEDMA_SFF=y
+
+#
+# PCI IDE chipsets support
+#
+CONFIG_BLK_DEV_IDEPCI=y
+# CONFIG_BLK_DEV_OFFBOARD is not set
+CONFIG_BLK_DEV_GENERIC=m
+CONFIG_BLK_DEV_OPTI621=m
+CONFIG_BLK_DEV_RZ1000=m
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+CONFIG_BLK_DEV_AEC62XX=m
+CONFIG_BLK_DEV_ALI15X3=m
+CONFIG_BLK_DEV_AMD74XX=m
+CONFIG_BLK_DEV_ATIIXP=m
+CONFIG_BLK_DEV_CMD64X=m
+CONFIG_BLK_DEV_TRIFLEX=m
+CONFIG_BLK_DEV_HPT366=m
+CONFIG_BLK_DEV_JMICRON=m
+CONFIG_BLK_DEV_PIIX=m
+CONFIG_BLK_DEV_IT8172=m
+CONFIG_BLK_DEV_IT8213=m
+CONFIG_BLK_DEV_IT821X=m
+CONFIG_BLK_DEV_NS87415=m
+CONFIG_BLK_DEV_PDC202XX_OLD=m
+CONFIG_BLK_DEV_PDC202XX_NEW=m
+CONFIG_BLK_DEV_SVWKS=m
+CONFIG_BLK_DEV_SIIMAGE=m
+CONFIG_BLK_DEV_SIS5513=m
+CONFIG_BLK_DEV_SLC90E66=m
+CONFIG_BLK_DEV_TRM290=m
+CONFIG_BLK_DEV_VIA82CXXX=m
+CONFIG_BLK_DEV_TC86C001=m
+CONFIG_BLK_DEV_IDEDMA=y
+
+#
+# SCSI device support
+#
+CONFIG_SCSI_MOD=y
+CONFIG_RAID_ATTRS=m
+CONFIG_SCSI=y
+CONFIG_SCSI_DMA=y
+CONFIG_SCSI_NETLINK=y
+CONFIG_SCSI_PROC_FS=y
+
+#
+# SCSI support type (disk, tape, CD-ROM)
+#
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_ST=m
+CONFIG_BLK_DEV_SR=m
+CONFIG_BLK_DEV_SR_VENDOR=y
+CONFIG_CHR_DEV_SG=m
+CONFIG_CHR_DEV_SCH=m
+CONFIG_SCSI_ENCLOSURE=m
+CONFIG_SCSI_CONSTANTS=y
+CONFIG_SCSI_LOGGING=y
+# CONFIG_SCSI_SCAN_ASYNC is not set
+
+#
+# SCSI Transports
+#
+CONFIG_SCSI_SPI_ATTRS=m
+CONFIG_SCSI_FC_ATTRS=m
+CONFIG_SCSI_ISCSI_ATTRS=m
+CONFIG_SCSI_SAS_ATTRS=m
+CONFIG_SCSI_SAS_LIBSAS=m
+CONFIG_SCSI_SAS_ATA=y
+CONFIG_SCSI_SAS_HOST_SMP=y
+CONFIG_SCSI_SRP_ATTRS=m
+# end of SCSI Transports
+
+CONFIG_SCSI_LOWLEVEL=y
+CONFIG_ISCSI_TCP=m
+CONFIG_ISCSI_BOOT_SYSFS=m
+CONFIG_SCSI_CXGB3_ISCSI=m
+CONFIG_SCSI_CXGB4_ISCSI=m
+CONFIG_SCSI_BNX2_ISCSI=m
+CONFIG_SCSI_BNX2X_FCOE=m
+CONFIG_BE2ISCSI=m
+CONFIG_BLK_DEV_3W_XXXX_RAID=m
+CONFIG_SCSI_HPSA=m
+CONFIG_SCSI_3W_9XXX=m
+CONFIG_SCSI_3W_SAS=m
+CONFIG_SCSI_ACARD=m
+CONFIG_SCSI_AACRAID=m
+CONFIG_SCSI_AIC7XXX=m
+CONFIG_AIC7XXX_CMDS_PER_DEVICE=253
+CONFIG_AIC7XXX_RESET_DELAY_MS=15000
+# CONFIG_AIC7XXX_DEBUG_ENABLE is not set
+CONFIG_AIC7XXX_DEBUG_MASK=0
+CONFIG_AIC7XXX_REG_PRETTY_PRINT=y
+CONFIG_SCSI_AIC79XX=m
+CONFIG_AIC79XX_CMDS_PER_DEVICE=32
+CONFIG_AIC79XX_RESET_DELAY_MS=15000
+# CONFIG_AIC79XX_DEBUG_ENABLE is not set
+CONFIG_AIC79XX_DEBUG_MASK=0
+CONFIG_AIC79XX_REG_PRETTY_PRINT=y
+CONFIG_SCSI_AIC94XX=m
+CONFIG_AIC94XX_DEBUG=y
+CONFIG_SCSI_MVSAS=m
+CONFIG_SCSI_MVSAS_DEBUG=y
+# CONFIG_SCSI_MVSAS_TASKLET is not set
+CONFIG_SCSI_MVUMI=m
+CONFIG_SCSI_DPT_I2O=m
+CONFIG_SCSI_ADVANSYS=m
+CONFIG_SCSI_ARCMSR=m
+CONFIG_SCSI_ESAS2R=m
+CONFIG_MEGARAID_NEWGEN=y
+CONFIG_MEGARAID_MM=m
+CONFIG_MEGARAID_MAILBOX=m
+CONFIG_MEGARAID_LEGACY=m
+CONFIG_MEGARAID_SAS=m
+CONFIG_SCSI_MPT3SAS=m
+CONFIG_SCSI_MPT2SAS_MAX_SGE=128
+CONFIG_SCSI_MPT3SAS_MAX_SGE=128
+CONFIG_SCSI_MPT2SAS=m
+CONFIG_SCSI_SMARTPQI=m
+CONFIG_SCSI_UFSHCD=m
+CONFIG_SCSI_UFSHCD_PCI=m
+# CONFIG_SCSI_UFS_DWC_TC_PCI is not set
+# CONFIG_SCSI_UFSHCD_PLATFORM is not set
+CONFIG_SCSI_UFS_BSG=y
+CONFIG_SCSI_HPTIOP=m
+CONFIG_SCSI_BUSLOGIC=m
+CONFIG_SCSI_FLASHPOINT=y
+CONFIG_SCSI_MYRB=m
+CONFIG_SCSI_MYRS=m
+CONFIG_VMWARE_PVSCSI=m
+CONFIG_XEN_SCSI_FRONTEND=m
+CONFIG_HYPERV_STORAGE=m
+CONFIG_LIBFC=m
+CONFIG_LIBFCOE=m
+CONFIG_FCOE=m
+CONFIG_FCOE_FNIC=m
+CONFIG_SCSI_SNIC=m
+# CONFIG_SCSI_SNIC_DEBUG_FS is not set
+CONFIG_SCSI_DMX3191D=m
+CONFIG_SCSI_FDOMAIN=m
+CONFIG_SCSI_FDOMAIN_PCI=m
+CONFIG_SCSI_GDTH=m
+CONFIG_SCSI_ISCI=m
+CONFIG_SCSI_IPS=m
+CONFIG_SCSI_INITIO=m
+CONFIG_SCSI_INIA100=m
+CONFIG_SCSI_PPA=m
+CONFIG_SCSI_IMM=m
+# CONFIG_SCSI_IZIP_EPP16 is not set
+# CONFIG_SCSI_IZIP_SLOW_CTR is not set
+CONFIG_SCSI_STEX=m
+CONFIG_SCSI_SYM53C8XX_2=m
+CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0
+CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
+CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
+CONFIG_SCSI_SYM53C8XX_MMIO=y
+CONFIG_SCSI_IPR=m
+# CONFIG_SCSI_IPR_TRACE is not set
+# CONFIG_SCSI_IPR_DUMP is not set
+CONFIG_SCSI_QLOGIC_1280=m
+CONFIG_SCSI_QLA_FC=m
+CONFIG_TCM_QLA2XXX=m
+# CONFIG_TCM_QLA2XXX_DEBUG is not set
+CONFIG_SCSI_QLA_ISCSI=m
+CONFIG_QEDI=m
+CONFIG_QEDF=m
+CONFIG_SCSI_LPFC=m
+# CONFIG_SCSI_LPFC_DEBUG_FS is not set
+CONFIG_SCSI_DC395x=m
+CONFIG_SCSI_AM53C974=m
+CONFIG_SCSI_WD719X=m
+CONFIG_SCSI_DEBUG=m
+CONFIG_SCSI_PMCRAID=m
+CONFIG_SCSI_PM8001=m
+CONFIG_SCSI_BFA_FC=m
+CONFIG_SCSI_VIRTIO=m
+CONFIG_SCSI_CHELSIO_FCOE=m
+CONFIG_SCSI_LOWLEVEL_PCMCIA=y
+CONFIG_PCMCIA_AHA152X=m
+CONFIG_PCMCIA_FDOMAIN=m
+CONFIG_PCMCIA_QLOGIC=m
+CONFIG_PCMCIA_SYM53C500=m
+CONFIG_SCSI_DH=y
+CONFIG_SCSI_DH_RDAC=m
+CONFIG_SCSI_DH_HP_SW=m
+CONFIG_SCSI_DH_EMC=m
+CONFIG_SCSI_DH_ALUA=m
+# end of SCSI device support
+
+CONFIG_ATA=y
+CONFIG_ATA_VERBOSE_ERROR=y
+CONFIG_ATA_ACPI=y
+CONFIG_SATA_ZPODD=y
+CONFIG_SATA_PMP=y
+
+#
+# Controllers with non-SFF native interface
+#
+CONFIG_SATA_AHCI=y
+CONFIG_SATA_MOBILE_LPM_POLICY=0
+CONFIG_SATA_AHCI_PLATFORM=y
+# CONFIG_SATA_INIC162X is not set
+CONFIG_SATA_ACARD_AHCI=m
+CONFIG_SATA_SIL24=m
+CONFIG_ATA_SFF=y
+
+#
+# SFF controllers with custom DMA interface
+#
+CONFIG_PDC_ADMA=m
+CONFIG_SATA_QSTOR=m
+CONFIG_SATA_SX4=m
+CONFIG_ATA_BMDMA=y
+
+#
+# SATA SFF controllers with BMDMA
+#
+CONFIG_ATA_PIIX=m
+# CONFIG_SATA_DWC is not set
+CONFIG_SATA_MV=m
+CONFIG_SATA_NV=m
+CONFIG_SATA_PROMISE=m
+CONFIG_SATA_SIL=m
+CONFIG_SATA_SIS=m
+CONFIG_SATA_SVW=m
+CONFIG_SATA_ULI=m
+CONFIG_SATA_VIA=m
+CONFIG_SATA_VITESSE=m
+
+#
+# PATA SFF controllers with BMDMA
+#
+CONFIG_PATA_ALI=m
+CONFIG_PATA_AMD=m
+CONFIG_PATA_ARTOP=m
+CONFIG_PATA_ATIIXP=m
+CONFIG_PATA_ATP867X=m
+CONFIG_PATA_CMD64X=m
+CONFIG_PATA_CYPRESS=m
+CONFIG_PATA_EFAR=m
+CONFIG_PATA_HPT366=m
+CONFIG_PATA_HPT37X=m
+CONFIG_PATA_HPT3X2N=m
+CONFIG_PATA_HPT3X3=m
+CONFIG_PATA_HPT3X3_DMA=y
+CONFIG_PATA_IT8213=m
+CONFIG_PATA_IT821X=m
+CONFIG_PATA_JMICRON=m
+CONFIG_PATA_MARVELL=m
+CONFIG_PATA_NETCELL=m
+CONFIG_PATA_NINJA32=m
+CONFIG_PATA_NS87415=m
+CONFIG_PATA_OLDPIIX=m
+CONFIG_PATA_OPTIDMA=m
+CONFIG_PATA_PDC2027X=m
+CONFIG_PATA_PDC_OLD=m
+CONFIG_PATA_RADISYS=m
+CONFIG_PATA_RDC=m
+CONFIG_PATA_SCH=m
+CONFIG_PATA_SERVERWORKS=m
+CONFIG_PATA_SIL680=m
+CONFIG_PATA_SIS=m
+CONFIG_PATA_TOSHIBA=m
+CONFIG_PATA_TRIFLEX=m
+CONFIG_PATA_VIA=m
+CONFIG_PATA_WINBOND=m
+
+#
+# PIO-only SFF controllers
+#
+CONFIG_PATA_CMD640_PCI=m
+CONFIG_PATA_MPIIX=m
+CONFIG_PATA_NS87410=m
+CONFIG_PATA_OPTI=m
+CONFIG_PATA_PCMCIA=m
+# CONFIG_PATA_PLATFORM is not set
+CONFIG_PATA_RZ1000=m
+
+#
+# Generic fallback / legacy drivers
+#
+CONFIG_PATA_ACPI=m
+CONFIG_ATA_GENERIC=m
+CONFIG_PATA_LEGACY=m
+CONFIG_MD=y
+CONFIG_BLK_DEV_MD=y
+# CONFIG_MD_AUTODETECT is not set
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_MD_RAID1=m
+CONFIG_MD_RAID10=m
+CONFIG_MD_RAID456=m
+CONFIG_MD_MULTIPATH=m
+CONFIG_MD_FAULTY=m
+CONFIG_MD_CLUSTER=m
+CONFIG_BCACHE=m
+# CONFIG_BCACHE_DEBUG is not set
+# CONFIG_BCACHE_CLOSURES_DEBUG is not set
+CONFIG_BLK_DEV_DM_BUILTIN=y
+CONFIG_BLK_DEV_DM=m
+# CONFIG_DM_DEBUG is not set
+CONFIG_DM_BUFIO=m
+# CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set
+CONFIG_DM_BIO_PRISON=m
+CONFIG_DM_PERSISTENT_DATA=m
+CONFIG_DM_UNSTRIPED=m
+CONFIG_DM_CRYPT=m
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_THIN_PROVISIONING=m
+CONFIG_DM_CACHE=m
+CONFIG_DM_CACHE_SMQ=m
+CONFIG_DM_WRITECACHE=m
+CONFIG_DM_ERA=m
+CONFIG_DM_CLONE=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_MULTIPATH=m
+CONFIG_DM_MULTIPATH_QL=m
+CONFIG_DM_MULTIPATH_ST=m
+# CONFIG_DM_DELAY is not set
+# CONFIG_DM_DUST is not set
+CONFIG_DM_UEVENT=y
+CONFIG_DM_FLAKEY=m
+CONFIG_DM_VERITY=m
+# CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG is not set
+# CONFIG_DM_VERITY_FEC is not set
+CONFIG_DM_SWITCH=m
+CONFIG_DM_LOG_WRITES=m
+CONFIG_DM_INTEGRITY=m
+CONFIG_TARGET_CORE=m
+CONFIG_TCM_IBLOCK=m
+CONFIG_TCM_FILEIO=m
+CONFIG_TCM_PSCSI=m
+CONFIG_TCM_USER2=m
+CONFIG_LOOPBACK_TARGET=m
+CONFIG_TCM_FC=m
+CONFIG_ISCSI_TARGET=m
+CONFIG_ISCSI_TARGET_CXGB4=m
+CONFIG_SBP_TARGET=m
+CONFIG_FUSION=y
+CONFIG_FUSION_SPI=m
+CONFIG_FUSION_FC=m
+CONFIG_FUSION_SAS=m
+CONFIG_FUSION_MAX_SGE=128
+CONFIG_FUSION_CTL=m
+CONFIG_FUSION_LAN=m
+CONFIG_FUSION_LOGGING=y
+
+#
+# IEEE 1394 (FireWire) support
+#
+CONFIG_FIREWIRE=m
+CONFIG_FIREWIRE_OHCI=m
+CONFIG_FIREWIRE_SBP2=m
+CONFIG_FIREWIRE_NET=m
+CONFIG_FIREWIRE_NOSY=m
+# end of IEEE 1394 (FireWire) support
+
+CONFIG_MACINTOSH_DRIVERS=y
+CONFIG_MAC_EMUMOUSEBTN=y
+CONFIG_NETDEVICES=y
+CONFIG_MII=m
+CONFIG_NET_CORE=y
+CONFIG_BONDING=m
+CONFIG_DUMMY=m
+CONFIG_EQUALIZER=m
+CONFIG_NET_FC=y
+CONFIG_IFB=m
+CONFIG_NET_TEAM=m
+CONFIG_NET_TEAM_MODE_BROADCAST=m
+CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
+CONFIG_NET_TEAM_MODE_RANDOM=m
+CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
+CONFIG_NET_TEAM_MODE_LOADBALANCE=m
+CONFIG_MACVLAN=m
+CONFIG_MACVTAP=m
+CONFIG_IPVLAN_L3S=y
+CONFIG_IPVLAN=m
+CONFIG_IPVTAP=m
+CONFIG_VXLAN=m
+CONFIG_GENEVE=m
+CONFIG_GTP=m
+CONFIG_MACSEC=m
+CONFIG_NETCONSOLE=m
+CONFIG_NETCONSOLE_DYNAMIC=y
+CONFIG_NETPOLL=y
+CONFIG_NET_POLL_CONTROLLER=y
+CONFIG_NTB_NETDEV=m
+CONFIG_RIONET=m
+CONFIG_RIONET_TX_SIZE=128
+CONFIG_RIONET_RX_SIZE=128
+CONFIG_TUN=m
+CONFIG_TAP=m
+# CONFIG_TUN_VNET_CROSS_LE is not set
+CONFIG_VETH=m
+CONFIG_VIRTIO_NET=m
+CONFIG_NLMON=m
+CONFIG_NET_VRF=m
+CONFIG_VSOCKMON=m
+CONFIG_SUNGEM_PHY=m
+CONFIG_ARCNET=m
+CONFIG_ARCNET_1201=m
+CONFIG_ARCNET_1051=m
+CONFIG_ARCNET_RAW=m
+CONFIG_ARCNET_CAP=m
+CONFIG_ARCNET_COM90xx=m
+CONFIG_ARCNET_COM90xxIO=m
+CONFIG_ARCNET_RIM_I=m
+CONFIG_ARCNET_COM20020=m
+CONFIG_ARCNET_COM20020_PCI=m
+CONFIG_ARCNET_COM20020_CS=m
+CONFIG_ATM_DRIVERS=y
+# CONFIG_ATM_DUMMY is not set
+CONFIG_ATM_TCP=m
+CONFIG_ATM_LANAI=m
+CONFIG_ATM_ENI=m
+# CONFIG_ATM_ENI_DEBUG is not set
+# CONFIG_ATM_ENI_TUNE_BURST is not set
+CONFIG_ATM_FIRESTREAM=m
+CONFIG_ATM_ZATM=m
+# CONFIG_ATM_ZATM_DEBUG is not set
+# CONFIG_ATM_NICSTAR is not set
+CONFIG_ATM_IDT77252=m
+# CONFIG_ATM_IDT77252_DEBUG is not set
+# CONFIG_ATM_IDT77252_RCV_ALL is not set
+CONFIG_ATM_IDT77252_USE_SUNI=y
+CONFIG_ATM_AMBASSADOR=m
+# CONFIG_ATM_AMBASSADOR_DEBUG is not set
+CONFIG_ATM_HORIZON=m
+# CONFIG_ATM_HORIZON_DEBUG is not set
+CONFIG_ATM_IA=m
+# CONFIG_ATM_IA_DEBUG is not set
+CONFIG_ATM_FORE200E=m
+CONFIG_ATM_FORE200E_USE_TASKLET=y
+CONFIG_ATM_FORE200E_TX_RETRY=16
+CONFIG_ATM_FORE200E_DEBUG=0
+CONFIG_ATM_HE=m
+CONFIG_ATM_HE_USE_SUNI=y
+CONFIG_ATM_SOLOS=m
+
+#
+# CAIF transport drivers
+#
+CONFIG_CAIF_TTY=m
+CONFIG_CAIF_SPI_SLAVE=m
+# CONFIG_CAIF_SPI_SYNC is not set
+CONFIG_CAIF_HSI=m
+CONFIG_CAIF_VIRTIO=m
+
+#
+# Distributed Switch Architecture drivers
+#
+CONFIG_B53=m
+CONFIG_B53_SPI_DRIVER=m
+CONFIG_B53_MDIO_DRIVER=m
+CONFIG_B53_MMAP_DRIVER=m
+CONFIG_B53_SRAB_DRIVER=m
+CONFIG_B53_SERDES=m
+CONFIG_NET_DSA_BCM_SF2=m
+# CONFIG_NET_DSA_LOOP is not set
+CONFIG_NET_DSA_LANTIQ_GSWIP=m
+# CONFIG_NET_DSA_MT7530 is not set
+CONFIG_NET_DSA_MV88E6060=m
+# CONFIG_NET_DSA_MICROCHIP_KSZ9477 is not set
+# CONFIG_NET_DSA_MICROCHIP_KSZ8795 is not set
+# CONFIG_NET_DSA_MV88E6XXX is not set
+# CONFIG_NET_DSA_SJA1105 is not set
+# CONFIG_NET_DSA_QCA8K is not set
+CONFIG_NET_DSA_REALTEK_SMI=m
+# CONFIG_NET_DSA_SMSC_LAN9303_I2C is not set
+# CONFIG_NET_DSA_SMSC_LAN9303_MDIO is not set
+# end of Distributed Switch Architecture drivers
+
+CONFIG_ETHERNET=y
+CONFIG_MDIO=m
+CONFIG_NET_VENDOR_3COM=y
+CONFIG_PCMCIA_3C574=m
+CONFIG_PCMCIA_3C589=m
+CONFIG_VORTEX=m
+CONFIG_TYPHOON=m
+CONFIG_NET_VENDOR_ADAPTEC=y
+CONFIG_ADAPTEC_STARFIRE=m
+CONFIG_NET_VENDOR_AGERE=y
+CONFIG_ET131X=m
+CONFIG_NET_VENDOR_ALACRITECH=y
+CONFIG_SLICOSS=m
+CONFIG_NET_VENDOR_ALTEON=y
+CONFIG_ACENIC=m
+# CONFIG_ACENIC_OMIT_TIGON_I is not set
+CONFIG_ALTERA_TSE=m
+CONFIG_NET_VENDOR_AMAZON=y
+CONFIG_ENA_ETHERNET=m
+CONFIG_NET_VENDOR_AMD=y
+CONFIG_AMD8111_ETH=m
+CONFIG_PCNET32=m
+CONFIG_PCMCIA_NMCLAN=m
+CONFIG_AMD_XGBE=m
+CONFIG_AMD_XGBE_DCB=y
+CONFIG_AMD_XGBE_HAVE_ECC=y
+CONFIG_NET_VENDOR_AQUANTIA=y
+CONFIG_AQTION=m
+CONFIG_NET_VENDOR_ARC=y
+CONFIG_NET_VENDOR_ATHEROS=y
+CONFIG_ATL2=m
+CONFIG_ATL1=m
+CONFIG_ATL1E=m
+CONFIG_ATL1C=m
+CONFIG_ALX=m
+CONFIG_NET_VENDOR_AURORA=y
+CONFIG_AURORA_NB8800=m
+CONFIG_NET_VENDOR_BROADCOM=y
+CONFIG_B44=m
+CONFIG_B44_PCI_AUTOSELECT=y
+CONFIG_B44_PCICORE_AUTOSELECT=y
+CONFIG_B44_PCI=y
+CONFIG_BCMGENET=m
+CONFIG_BNX2=m
+CONFIG_CNIC=m
+CONFIG_TIGON3=m
+CONFIG_TIGON3_HWMON=y
+CONFIG_BNX2X=m
+CONFIG_BNX2X_SRIOV=y
+CONFIG_SYSTEMPORT=m
+CONFIG_BNXT=m
+CONFIG_BNXT_SRIOV=y
+CONFIG_BNXT_FLOWER_OFFLOAD=y
+CONFIG_BNXT_DCB=y
+CONFIG_BNXT_HWMON=y
+CONFIG_NET_VENDOR_BROCADE=y
+CONFIG_BNA=m
+CONFIG_NET_VENDOR_CADENCE=y
+CONFIG_MACB=m
+CONFIG_MACB_USE_HWSTAMP=y
+CONFIG_MACB_PCI=m
+CONFIG_NET_VENDOR_CAVIUM=y
+CONFIG_THUNDER_NIC_PF=m
+CONFIG_THUNDER_NIC_VF=m
+CONFIG_THUNDER_NIC_BGX=m
+CONFIG_THUNDER_NIC_RGX=m
+CONFIG_CAVIUM_PTP=m
+CONFIG_LIQUIDIO=m
+CONFIG_LIQUIDIO_VF=m
+CONFIG_NET_VENDOR_CHELSIO=y
+CONFIG_CHELSIO_T1=m
+CONFIG_CHELSIO_T1_1G=y
+CONFIG_CHELSIO_T3=m
+CONFIG_CHELSIO_T4=m
+CONFIG_CHELSIO_T4_DCB=y
+CONFIG_CHELSIO_T4_FCOE=y
+CONFIG_CHELSIO_T4VF=m
+CONFIG_CHELSIO_LIB=m
+CONFIG_NET_VENDOR_CISCO=y
+CONFIG_ENIC=m
+CONFIG_NET_VENDOR_CORTINA=y
+CONFIG_CX_ECAT=m
+# CONFIG_DNET is not set
+CONFIG_NET_VENDOR_DEC=y
+CONFIG_NET_TULIP=y
+CONFIG_DE2104X=m
+CONFIG_DE2104X_DSL=0
+CONFIG_TULIP=m
+# CONFIG_TULIP_MWI is not set
+# CONFIG_TULIP_MMIO is not set
+# CONFIG_TULIP_NAPI is not set
+CONFIG_DE4X5=m
+CONFIG_WINBOND_840=m
+CONFIG_DM9102=m
+CONFIG_ULI526X=m
+CONFIG_PCMCIA_XIRCOM=m
+CONFIG_NET_VENDOR_DLINK=y
+CONFIG_DL2K=m
+CONFIG_SUNDANCE=m
+# CONFIG_SUNDANCE_MMIO is not set
+CONFIG_NET_VENDOR_EMULEX=y
+CONFIG_BE2NET=m
+CONFIG_BE2NET_HWMON=y
+CONFIG_BE2NET_BE2=y
+CONFIG_BE2NET_BE3=y
+CONFIG_BE2NET_LANCER=y
+CONFIG_BE2NET_SKYHAWK=y
+CONFIG_NET_VENDOR_EZCHIP=y
+CONFIG_NET_VENDOR_FUJITSU=y
+CONFIG_PCMCIA_FMVJ18X=m
+CONFIG_NET_VENDOR_GOOGLE=y
+CONFIG_GVE=m
+CONFIG_NET_VENDOR_HP=y
+CONFIG_HP100=m
+CONFIG_NET_VENDOR_HUAWEI=y
+CONFIG_HINIC=m
+CONFIG_NET_VENDOR_I825XX=y
+CONFIG_NET_VENDOR_INTEL=y
+CONFIG_E100=m
+CONFIG_E1000=m
+CONFIG_E1000E=m
+CONFIG_E1000E_HWTS=y
+CONFIG_IGB=m
+CONFIG_IGB_HWMON=y
+CONFIG_IGB_DCA=y
+CONFIG_IGBVF=m
+CONFIG_IXGB=m
+CONFIG_IXGBE=m
+CONFIG_IXGBE_HWMON=y
+CONFIG_IXGBE_DCA=y
+CONFIG_IXGBE_DCB=y
+CONFIG_IXGBE_IPSEC=y
+CONFIG_IXGBEVF=m
+CONFIG_IXGBEVF_IPSEC=y
+CONFIG_I40E=m
+CONFIG_I40E_DCB=y
+CONFIG_IAVF=m
+CONFIG_I40EVF=m
+CONFIG_ICE=m
+CONFIG_FM10K=m
+CONFIG_IGC=m
+CONFIG_JME=m
+CONFIG_NET_VENDOR_MARVELL=y
+CONFIG_MVMDIO=m
+CONFIG_SKGE=m
+# CONFIG_SKGE_DEBUG is not set
+CONFIG_SKGE_GENESIS=y
+CONFIG_SKY2=m
+# CONFIG_SKY2_DEBUG is not set
+CONFIG_NET_VENDOR_MELLANOX=y
+CONFIG_MLX4_EN=m
+CONFIG_MLX4_EN_DCB=y
+CONFIG_MLX4_CORE=m
+# CONFIG_MLX4_DEBUG is not set
+CONFIG_MLX4_CORE_GEN2=y
+CONFIG_MLX5_CORE=m
+CONFIG_MLX5_ACCEL=y
+CONFIG_MLX5_FPGA=y
+CONFIG_MLX5_CORE_EN=y
+CONFIG_MLX5_EN_ARFS=y
+CONFIG_MLX5_EN_RXNFC=y
+CONFIG_MLX5_MPFS=y
+CONFIG_MLX5_ESWITCH=y
+CONFIG_MLX5_CORE_EN_DCB=y
+# CONFIG_MLX5_CORE_IPOIB is not set
+CONFIG_MLX5_FPGA_IPSEC=y
+# CONFIG_MLX5_EN_IPSEC is not set
+CONFIG_MLX5_SW_STEERING=y
+CONFIG_MLXSW_CORE=m
+CONFIG_MLXSW_CORE_HWMON=y
+CONFIG_MLXSW_CORE_THERMAL=y
+CONFIG_MLXSW_PCI=m
+CONFIG_MLXSW_I2C=m
+CONFIG_MLXSW_SWITCHIB=m
+CONFIG_MLXSW_SWITCHX2=m
+CONFIG_MLXSW_SPECTRUM=m
+CONFIG_MLXSW_SPECTRUM_DCB=y
+CONFIG_MLXSW_MINIMAL=m
+CONFIG_MLXFW=m
+CONFIG_NET_VENDOR_MICREL=y
+CONFIG_KS8842=m
+CONFIG_KS8851=m
+# CONFIG_KS8851_MLL is not set
+CONFIG_KSZ884X_PCI=m
+CONFIG_NET_VENDOR_MICROCHIP=y
+CONFIG_ENC28J60=m
+# CONFIG_ENC28J60_WRITEVERIFY is not set
+CONFIG_ENCX24J600=m
+CONFIG_LAN743X=m
+CONFIG_NET_VENDOR_MICROSEMI=y
+CONFIG_MSCC_OCELOT_SWITCH=m
+CONFIG_NET_VENDOR_MYRI=y
+CONFIG_MYRI10GE=m
+CONFIG_MYRI10GE_DCA=y
+CONFIG_FEALNX=m
+CONFIG_NET_VENDOR_NATSEMI=y
+CONFIG_NATSEMI=m
+CONFIG_NS83820=m
+CONFIG_NET_VENDOR_NETERION=y
+CONFIG_S2IO=m
+CONFIG_VXGE=m
+# CONFIG_VXGE_DEBUG_TRACE_ALL is not set
+CONFIG_NET_VENDOR_NETRONOME=y
+CONFIG_NFP=m
+# CONFIG_NFP_APP_FLOWER is not set
+CONFIG_NFP_APP_ABM_NIC=y
+# CONFIG_NFP_DEBUG is not set
+CONFIG_NET_VENDOR_NI=y
+CONFIG_NI_XGE_MANAGEMENT_ENET=m
+CONFIG_NET_VENDOR_8390=y
+CONFIG_PCMCIA_AXNET=m
+CONFIG_NE2K_PCI=m
+CONFIG_PCMCIA_PCNET=m
+CONFIG_NET_VENDOR_NVIDIA=y
+CONFIG_FORCEDETH=m
+CONFIG_NET_VENDOR_OKI=y
+CONFIG_ETHOC=m
+CONFIG_NET_VENDOR_PACKET_ENGINES=y
+CONFIG_HAMACHI=m
+CONFIG_YELLOWFIN=m
+CONFIG_NET_VENDOR_PENSANDO=y
+CONFIG_IONIC=m
+CONFIG_NET_VENDOR_QLOGIC=y
+CONFIG_QLA3XXX=m
+CONFIG_QLCNIC=m
+CONFIG_QLCNIC_SRIOV=y
+CONFIG_QLCNIC_DCB=y
+CONFIG_QLCNIC_HWMON=y
+CONFIG_NETXEN_NIC=m
+CONFIG_QED=m
+CONFIG_QED_LL2=y
+CONFIG_QED_SRIOV=y
+CONFIG_QEDE=m
+CONFIG_QED_RDMA=y
+CONFIG_QED_ISCSI=y
+CONFIG_QED_FCOE=y
+CONFIG_QED_OOO=y
+CONFIG_NET_VENDOR_QUALCOMM=y
+CONFIG_QCOM_EMAC=m
+CONFIG_RMNET=m
+CONFIG_NET_VENDOR_RDC=y
+CONFIG_R6040=m
+CONFIG_NET_VENDOR_REALTEK=y
+CONFIG_ATP=m
+CONFIG_8139CP=m
+CONFIG_8139TOO=m
+# CONFIG_8139TOO_PIO is not set
+# CONFIG_8139TOO_TUNE_TWISTER is not set
+CONFIG_8139TOO_8129=y
+# CONFIG_8139_OLD_RX_RESET is not set
+CONFIG_R8169=m
+CONFIG_NET_VENDOR_RENESAS=y
+CONFIG_NET_VENDOR_ROCKER=y
+# CONFIG_ROCKER is not set
+CONFIG_NET_VENDOR_SAMSUNG=y
+CONFIG_SXGBE_ETH=m
+CONFIG_NET_VENDOR_SEEQ=y
+CONFIG_NET_VENDOR_SOLARFLARE=y
+CONFIG_SFC=m
+CONFIG_SFC_MTD=y
+CONFIG_SFC_MCDI_MON=y
+CONFIG_SFC_SRIOV=y
+CONFIG_SFC_MCDI_LOGGING=y
+CONFIG_SFC_FALCON=m
+CONFIG_SFC_FALCON_MTD=y
+CONFIG_NET_VENDOR_SILAN=y
+CONFIG_SC92031=m
+CONFIG_NET_VENDOR_SIS=y
+CONFIG_SIS900=m
+CONFIG_SIS190=m
+CONFIG_NET_VENDOR_SMSC=y
+CONFIG_PCMCIA_SMC91C92=m
+CONFIG_EPIC100=m
+CONFIG_SMSC911X=m
+CONFIG_SMSC9420=m
+CONFIG_NET_VENDOR_SOCIONEXT=y
+CONFIG_NET_VENDOR_STMICRO=y
+CONFIG_STMMAC_ETH=m
+# CONFIG_STMMAC_SELFTESTS is not set
+CONFIG_STMMAC_PLATFORM=m
+CONFIG_DWMAC_GENERIC=m
+# CONFIG_STMMAC_PCI is not set
+CONFIG_NET_VENDOR_SUN=y
+CONFIG_HAPPYMEAL=m
+CONFIG_SUNGEM=m
+CONFIG_CASSINI=m
+CONFIG_NIU=m
+CONFIG_NET_VENDOR_SYNOPSYS=y
+CONFIG_DWC_XLGMAC=m
+CONFIG_DWC_XLGMAC_PCI=m
+CONFIG_NET_VENDOR_TEHUTI=y
+CONFIG_TEHUTI=m
+CONFIG_NET_VENDOR_TI=y
+# CONFIG_TI_CPSW_PHY_SEL is not set
+CONFIG_TLAN=m
+CONFIG_NET_VENDOR_VIA=y
+CONFIG_VIA_RHINE=m
+# CONFIG_VIA_RHINE_MMIO is not set
+CONFIG_VIA_VELOCITY=m
+CONFIG_NET_VENDOR_WIZNET=y
+CONFIG_WIZNET_W5100=m
+CONFIG_WIZNET_W5300=m
+# CONFIG_WIZNET_BUS_DIRECT is not set
+# CONFIG_WIZNET_BUS_INDIRECT is not set
+CONFIG_WIZNET_BUS_ANY=y
+CONFIG_WIZNET_W5100_SPI=m
+CONFIG_NET_VENDOR_XILINX=y
+CONFIG_XILINX_AXI_EMAC=m
+# CONFIG_XILINX_LL_TEMAC is not set
+CONFIG_NET_VENDOR_XIRCOM=y
+CONFIG_PCMCIA_XIRC2PS=m
+CONFIG_FDDI=y
+CONFIG_DEFXX=m
+# CONFIG_DEFXX_MMIO is not set
+CONFIG_SKFP=m
+# CONFIG_HIPPI is not set
+CONFIG_NET_SB1000=m
+CONFIG_MDIO_DEVICE=m
+CONFIG_MDIO_BUS=m
+CONFIG_MDIO_BCM_UNIMAC=m
+CONFIG_MDIO_BITBANG=m
+CONFIG_MDIO_CAVIUM=m
+CONFIG_MDIO_GPIO=m
+CONFIG_MDIO_I2C=m
+CONFIG_MDIO_MSCC_MIIM=m
+CONFIG_MDIO_THUNDER=m
+CONFIG_PHYLINK=m
+CONFIG_PHYLIB=m
+CONFIG_SWPHY=y
+# CONFIG_LED_TRIGGER_PHY is not set
+
+#
+# MII PHY device drivers
+#
+CONFIG_SFP=m
+CONFIG_ADIN_PHY=m
+CONFIG_AMD_PHY=m
+CONFIG_AQUANTIA_PHY=m
+# CONFIG_AX88796B_PHY is not set
+CONFIG_AT803X_PHY=m
+CONFIG_BCM7XXX_PHY=m
+CONFIG_BCM87XX_PHY=m
+CONFIG_BCM_NET_PHYLIB=m
+CONFIG_BROADCOM_PHY=m
+CONFIG_CICADA_PHY=m
+CONFIG_CORTINA_PHY=m
+CONFIG_DAVICOM_PHY=m
+# CONFIG_DP83822_PHY is not set
+# CONFIG_DP83TC811_PHY is not set
+CONFIG_DP83848_PHY=m
+CONFIG_DP83867_PHY=m
+CONFIG_FIXED_PHY=m
+CONFIG_ICPLUS_PHY=m
+CONFIG_INTEL_XWAY_PHY=m
+CONFIG_LSI_ET1011C_PHY=m
+CONFIG_LXT_PHY=m
+CONFIG_MARVELL_PHY=m
+CONFIG_MARVELL_10G_PHY=m
+CONFIG_MICREL_PHY=m
+CONFIG_MICROCHIP_PHY=m
+CONFIG_MICROCHIP_T1_PHY=m
+CONFIG_MICROSEMI_PHY=m
+CONFIG_NATIONAL_PHY=m
+CONFIG_NXP_TJA11XX_PHY=m
+CONFIG_QSEMI_PHY=m
+CONFIG_REALTEK_PHY=m
+# CONFIG_RENESAS_PHY is not set
+CONFIG_ROCKCHIP_PHY=m
+CONFIG_SMSC_PHY=m
+CONFIG_STE10XP=m
+CONFIG_TERANETICS_PHY=m
+CONFIG_VITESSE_PHY=m
+CONFIG_XILINX_GMII2RGMII=m
+CONFIG_MICREL_KS8995MA=m
+CONFIG_PLIP=m
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPPOATM=m
+CONFIG_PPPOE=m
+CONFIG_PPTP=m
+CONFIG_PPPOL2TP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_SLIP=m
+CONFIG_SLHC=m
+CONFIG_SLIP_COMPRESSED=y
+CONFIG_SLIP_SMART=y
+CONFIG_SLIP_MODE_SLIP6=y
+
+#
+# Host-side USB support is needed for USB Network Adapter support
+#
+CONFIG_USB_NET_DRIVERS=m
+CONFIG_USB_CATC=m
+CONFIG_USB_KAWETH=m
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+CONFIG_USB_RTL8152=m
+CONFIG_USB_LAN78XX=m
+CONFIG_USB_USBNET=m
+CONFIG_USB_NET_AX8817X=m
+CONFIG_USB_NET_AX88179_178A=m
+CONFIG_USB_NET_CDCETHER=m
+CONFIG_USB_NET_CDC_EEM=m
+CONFIG_USB_NET_CDC_NCM=m
+CONFIG_USB_NET_HUAWEI_CDC_NCM=m
+CONFIG_USB_NET_CDC_MBIM=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_SR9700=m
+CONFIG_USB_NET_SR9800=m
+CONFIG_USB_NET_SMSC75XX=m
+CONFIG_USB_NET_SMSC95XX=m
+CONFIG_USB_NET_GL620A=m
+CONFIG_USB_NET_NET1080=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_NET_RNDIS_HOST=m
+CONFIG_USB_NET_CDC_SUBSET_ENABLE=m
+CONFIG_USB_NET_CDC_SUBSET=m
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+CONFIG_USB_BELKIN=y
+CONFIG_USB_ARMLINUX=y
+CONFIG_USB_EPSON2888=y
+CONFIG_USB_KC2190=y
+CONFIG_USB_NET_ZAURUS=m
+CONFIG_USB_NET_CX82310_ETH=m
+CONFIG_USB_NET_KALMIA=m
+CONFIG_USB_NET_QMI_WWAN=m
+CONFIG_USB_HSO=m
+CONFIG_USB_NET_INT51X1=m
+CONFIG_USB_CDC_PHONET=m
+CONFIG_USB_IPHETH=m
+CONFIG_USB_SIERRA_NET=m
+CONFIG_USB_VL600=m
+CONFIG_USB_NET_CH9200=m
+CONFIG_USB_NET_AQC111=m
+CONFIG_WLAN=y
+# CONFIG_WIRELESS_WDS is not set
+CONFIG_WLAN_VENDOR_ADMTEK=y
+CONFIG_ADM8211=m
+CONFIG_ATH_COMMON=m
+CONFIG_WLAN_VENDOR_ATH=y
+CONFIG_ATH_DEBUG=y
+# CONFIG_ATH_TRACEPOINTS is not set
+CONFIG_ATH5K=m
+CONFIG_ATH5K_DEBUG=y
+# CONFIG_ATH5K_TRACER is not set
+CONFIG_ATH5K_PCI=y
+CONFIG_ATH9K_HW=m
+CONFIG_ATH9K_COMMON=m
+CONFIG_ATH9K_BTCOEX_SUPPORT=y
+CONFIG_ATH9K=m
+CONFIG_ATH9K_PCI=y
+CONFIG_ATH9K_AHB=y
+# CONFIG_ATH9K_DEBUGFS is not set
+# CONFIG_ATH9K_DYNACK is not set
+CONFIG_ATH9K_WOW=y
+CONFIG_ATH9K_RFKILL=y
+# CONFIG_ATH9K_CHANNEL_CONTEXT is not set
+CONFIG_ATH9K_PCOEM=y
+CONFIG_ATH9K_PCI_NO_EEPROM=m
+CONFIG_ATH9K_HTC=m
+# CONFIG_ATH9K_HTC_DEBUGFS is not set
+CONFIG_ATH9K_HWRNG=y
+CONFIG_CARL9170=m
+CONFIG_CARL9170_LEDS=y
+CONFIG_CARL9170_WPC=y
+CONFIG_CARL9170_HWRNG=y
+CONFIG_ATH6KL=m
+CONFIG_ATH6KL_SDIO=m
+CONFIG_ATH6KL_USB=m
+# CONFIG_ATH6KL_DEBUG is not set
+# CONFIG_ATH6KL_TRACING is not set
+CONFIG_AR5523=m
+CONFIG_WIL6210=m
+CONFIG_WIL6210_ISR_COR=y
+CONFIG_WIL6210_TRACING=y
+# CONFIG_WIL6210_DEBUGFS is not set
+CONFIG_ATH10K=m
+CONFIG_ATH10K_CE=y
+CONFIG_ATH10K_PCI=m
+CONFIG_ATH10K_SDIO=m
+CONFIG_ATH10K_USB=m
+CONFIG_ATH10K_DEBUG=y
+# CONFIG_ATH10K_DEBUGFS is not set
+# CONFIG_ATH10K_TRACING is not set
+CONFIG_WCN36XX=m
+# CONFIG_WCN36XX_DEBUGFS is not set
+CONFIG_WLAN_VENDOR_ATMEL=y
+CONFIG_ATMEL=m
+CONFIG_PCI_ATMEL=m
+CONFIG_PCMCIA_ATMEL=m
+CONFIG_AT76C50X_USB=m
+CONFIG_WLAN_VENDOR_BROADCOM=y
+CONFIG_B43=m
+CONFIG_B43_BCMA=y
+CONFIG_B43_SSB=y
+CONFIG_B43_BUSES_BCMA_AND_SSB=y
+# CONFIG_B43_BUSES_BCMA is not set
+# CONFIG_B43_BUSES_SSB is not set
+CONFIG_B43_PCI_AUTOSELECT=y
+CONFIG_B43_PCICORE_AUTOSELECT=y
+CONFIG_B43_SDIO=y
+CONFIG_B43_BCMA_PIO=y
+CONFIG_B43_PIO=y
+CONFIG_B43_PHY_G=y
+CONFIG_B43_PHY_N=y
+CONFIG_B43_PHY_LP=y
+CONFIG_B43_PHY_HT=y
+CONFIG_B43_LEDS=y
+CONFIG_B43_HWRNG=y
+CONFIG_B43_DEBUG=y
+CONFIG_B43LEGACY=m
+CONFIG_B43LEGACY_PCI_AUTOSELECT=y
+CONFIG_B43LEGACY_PCICORE_AUTOSELECT=y
+CONFIG_B43LEGACY_LEDS=y
+CONFIG_B43LEGACY_HWRNG=y
+CONFIG_B43LEGACY_DEBUG=y
+CONFIG_B43LEGACY_DMA=y
+CONFIG_B43LEGACY_PIO=y
+CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
+# CONFIG_B43LEGACY_DMA_MODE is not set
+# CONFIG_B43LEGACY_PIO_MODE is not set
+CONFIG_BRCMUTIL=m
+CONFIG_BRCMSMAC=m
+CONFIG_BRCMFMAC=m
+CONFIG_BRCMFMAC_PROTO_BCDC=y
+CONFIG_BRCMFMAC_PROTO_MSGBUF=y
+CONFIG_BRCMFMAC_SDIO=y
+CONFIG_BRCMFMAC_USB=y
+CONFIG_BRCMFMAC_PCIE=y
+# CONFIG_BRCM_TRACING is not set
+# CONFIG_BRCMDBG is not set
+CONFIG_WLAN_VENDOR_CISCO=y
+CONFIG_AIRO=m
+CONFIG_AIRO_CS=m
+CONFIG_WLAN_VENDOR_INTEL=y
+CONFIG_IPW2100=m
+CONFIG_IPW2100_MONITOR=y
+# CONFIG_IPW2100_DEBUG is not set
+CONFIG_IPW2200=m
+CONFIG_IPW2200_MONITOR=y
+CONFIG_IPW2200_RADIOTAP=y
+CONFIG_IPW2200_PROMISCUOUS=y
+CONFIG_IPW2200_QOS=y
+# CONFIG_IPW2200_DEBUG is not set
+CONFIG_LIBIPW=m
+# CONFIG_LIBIPW_DEBUG is not set
+CONFIG_IWLEGACY=m
+CONFIG_IWL4965=m
+CONFIG_IWL3945=m
+
+#
+# iwl3945 / iwl4965 Debugging Options
+#
+# CONFIG_IWLEGACY_DEBUG is not set
+# end of iwl3945 / iwl4965 Debugging Options
+
+CONFIG_IWLWIFI=m
+CONFIG_IWLWIFI_LEDS=y
+CONFIG_IWLDVM=m
+CONFIG_IWLMVM=m
+CONFIG_IWLWIFI_OPMODE_MODULAR=y
+# CONFIG_IWLWIFI_BCAST_FILTERING is not set
+
+#
+# Debugging Options
+#
+CONFIG_IWLWIFI_DEBUG=y
+# CONFIG_IWLWIFI_DEVICE_TRACING is not set
+# end of Debugging Options
+
+CONFIG_WLAN_VENDOR_INTERSIL=y
+CONFIG_HOSTAP=m
+CONFIG_HOSTAP_FIRMWARE=y
+CONFIG_HOSTAP_FIRMWARE_NVRAM=y
+CONFIG_HOSTAP_PLX=m
+CONFIG_HOSTAP_PCI=m
+CONFIG_HOSTAP_CS=m
+CONFIG_HERMES=m
+CONFIG_HERMES_PRISM=y
+CONFIG_HERMES_CACHE_FW_ON_INIT=y
+CONFIG_PLX_HERMES=m
+CONFIG_TMD_HERMES=m
+CONFIG_NORTEL_HERMES=m
+CONFIG_PCI_HERMES=m
+CONFIG_PCMCIA_HERMES=m
+CONFIG_PCMCIA_SPECTRUM=m
+CONFIG_ORINOCO_USB=m
+CONFIG_P54_COMMON=m
+CONFIG_P54_USB=m
+CONFIG_P54_PCI=m
+CONFIG_P54_SPI=m
+CONFIG_P54_SPI_DEFAULT_EEPROM=y
+CONFIG_P54_LEDS=y
+CONFIG_PRISM54=m
+CONFIG_WLAN_VENDOR_MARVELL=y
+CONFIG_LIBERTAS=m
+CONFIG_LIBERTAS_USB=m
+CONFIG_LIBERTAS_CS=m
+CONFIG_LIBERTAS_SDIO=m
+CONFIG_LIBERTAS_SPI=m
+# CONFIG_LIBERTAS_DEBUG is not set
+CONFIG_LIBERTAS_MESH=y
+# CONFIG_LIBERTAS_THINFIRM is not set
+CONFIG_MWIFIEX=m
+CONFIG_MWIFIEX_SDIO=m
+CONFIG_MWIFIEX_PCIE=m
+CONFIG_MWIFIEX_USB=m
+CONFIG_MWL8K=m
+CONFIG_WLAN_VENDOR_MEDIATEK=y
+CONFIG_MT7601U=m
+CONFIG_MT76_CORE=m
+CONFIG_MT76_LEDS=y
+CONFIG_MT76_USB=m
+CONFIG_MT76x02_LIB=m
+CONFIG_MT76x02_USB=m
+CONFIG_MT76x0_COMMON=m
+CONFIG_MT76x0U=m
+CONFIG_MT76x0E=m
+CONFIG_MT76x2_COMMON=m
+CONFIG_MT76x2E=m
+CONFIG_MT76x2U=m
+CONFIG_MT7603E=m
+CONFIG_MT7615E=m
+CONFIG_WLAN_VENDOR_RALINK=y
+CONFIG_RT2X00=m
+CONFIG_RT2400PCI=m
+CONFIG_RT2500PCI=m
+CONFIG_RT61PCI=m
+CONFIG_RT2800PCI=m
+CONFIG_RT2800PCI_RT33XX=y
+CONFIG_RT2800PCI_RT35XX=y
+CONFIG_RT2800PCI_RT53XX=y
+CONFIG_RT2800PCI_RT3290=y
+CONFIG_RT2500USB=m
+CONFIG_RT73USB=m
+CONFIG_RT2800USB=m
+CONFIG_RT2800USB_RT33XX=y
+CONFIG_RT2800USB_RT35XX=y
+CONFIG_RT2800USB_RT3573=y
+CONFIG_RT2800USB_RT53XX=y
+CONFIG_RT2800USB_RT55XX=y
+CONFIG_RT2800USB_UNKNOWN=y
+CONFIG_RT2800_LIB=m
+CONFIG_RT2800_LIB_MMIO=m
+CONFIG_RT2X00_LIB_MMIO=m
+CONFIG_RT2X00_LIB_PCI=m
+CONFIG_RT2X00_LIB_USB=m
+CONFIG_RT2X00_LIB=m
+CONFIG_RT2X00_LIB_FIRMWARE=y
+CONFIG_RT2X00_LIB_CRYPTO=y
+CONFIG_RT2X00_LIB_LEDS=y
+# CONFIG_RT2X00_DEBUG is not set
+CONFIG_WLAN_VENDOR_REALTEK=y
+CONFIG_RTL8180=m
+CONFIG_RTL8187=m
+CONFIG_RTL8187_LEDS=y
+CONFIG_RTL_CARDS=m
+CONFIG_RTL8192CE=m
+CONFIG_RTL8192SE=m
+CONFIG_RTL8192DE=m
+CONFIG_RTL8723AE=m
+CONFIG_RTL8723BE=m
+CONFIG_RTL8188EE=m
+CONFIG_RTL8192EE=m
+CONFIG_RTL8821AE=m
+CONFIG_RTL8192CU=m
+CONFIG_RTLWIFI=m
+CONFIG_RTLWIFI_PCI=m
+CONFIG_RTLWIFI_USB=m
+CONFIG_RTLWIFI_DEBUG=y
+CONFIG_RTL8192C_COMMON=m
+CONFIG_RTL8723_COMMON=m
+CONFIG_RTLBTCOEXIST=m
+CONFIG_RTL8XXXU=m
+# CONFIG_RTL8XXXU_UNTESTED is not set
+CONFIG_RTW88=m
+CONFIG_RTW88_CORE=m
+CONFIG_RTW88_PCI=m
+CONFIG_RTW88_8822BE=y
+CONFIG_RTW88_8822CE=y
+CONFIG_RTW88_DEBUG=y
+CONFIG_RTW88_DEBUGFS=y
+CONFIG_WLAN_VENDOR_RSI=y
+CONFIG_RSI_91X=m
+CONFIG_RSI_DEBUGFS=y
+CONFIG_RSI_SDIO=m
+CONFIG_RSI_USB=m
+CONFIG_RSI_COEX=y
+CONFIG_WLAN_VENDOR_ST=y
+CONFIG_CW1200=m
+CONFIG_CW1200_WLAN_SDIO=m
+CONFIG_CW1200_WLAN_SPI=m
+CONFIG_WLAN_VENDOR_TI=y
+CONFIG_WL1251=m
+CONFIG_WL1251_SPI=m
+CONFIG_WL1251_SDIO=m
+CONFIG_WL12XX=m
+CONFIG_WL18XX=m
+CONFIG_WLCORE=m
+CONFIG_WLCORE_SDIO=m
+CONFIG_WILINK_PLATFORM_DATA=y
+CONFIG_WLAN_VENDOR_ZYDAS=y
+CONFIG_USB_ZD1201=m
+CONFIG_ZD1211RW=m
+# CONFIG_ZD1211RW_DEBUG is not set
+CONFIG_WLAN_VENDOR_QUANTENNA=y
+CONFIG_QTNFMAC=m
+CONFIG_QTNFMAC_PCIE=m
+CONFIG_PCMCIA_RAYCS=m
+CONFIG_PCMCIA_WL3501=m
+CONFIG_MAC80211_HWSIM=m
+CONFIG_USB_NET_RNDIS_WLAN=m
+# CONFIG_VIRT_WIFI is not set
+
+#
+# WiMAX Wireless Broadband devices
+#
+CONFIG_WIMAX_I2400M=m
+CONFIG_WIMAX_I2400M_USB=m
+CONFIG_WIMAX_I2400M_DEBUG_LEVEL=8
+# end of WiMAX Wireless Broadband devices
+
+CONFIG_WAN=y
+CONFIG_LANMEDIA=m
+CONFIG_HDLC=m
+CONFIG_HDLC_RAW=m
+CONFIG_HDLC_RAW_ETH=m
+CONFIG_HDLC_CISCO=m
+CONFIG_HDLC_FR=m
+CONFIG_HDLC_PPP=m
+CONFIG_HDLC_X25=m
+CONFIG_PCI200SYN=m
+CONFIG_WANXL=m
+CONFIG_PC300TOO=m
+CONFIG_FARSYNC=m
+CONFIG_DLCI=m
+CONFIG_DLCI_MAX=8
+CONFIG_LAPBETHER=m
+CONFIG_X25_ASY=m
+CONFIG_SBNI=m
+CONFIG_SBNI_MULTILINE=y
+CONFIG_IEEE802154_DRIVERS=m
+CONFIG_IEEE802154_FAKELB=m
+CONFIG_IEEE802154_AT86RF230=m
+# CONFIG_IEEE802154_AT86RF230_DEBUGFS is not set
+CONFIG_IEEE802154_MRF24J40=m
+CONFIG_IEEE802154_CC2520=m
+CONFIG_IEEE802154_ATUSB=m
+CONFIG_IEEE802154_ADF7242=m
+CONFIG_IEEE802154_CA8210=m
+# CONFIG_IEEE802154_CA8210_DEBUGFS is not set
+# CONFIG_IEEE802154_MCR20A is not set
+# CONFIG_IEEE802154_HWSIM is not set
+CONFIG_XEN_NETDEV_FRONTEND=m
+CONFIG_XEN_NETDEV_BACKEND=m
+CONFIG_VMXNET3=m
+CONFIG_FUJITSU_ES=m
+CONFIG_THUNDERBOLT_NET=m
+CONFIG_HYPERV_NET=m
+# CONFIG_NETDEVSIM is not set
+CONFIG_NET_FAILOVER=m
+CONFIG_ISDN=y
+CONFIG_ISDN_CAPI=m
+# CONFIG_CAPI_TRACE is not set
+CONFIG_ISDN_CAPI_CAPI20=m
+CONFIG_ISDN_CAPI_MIDDLEWARE=y
+CONFIG_MISDN=m
+CONFIG_MISDN_DSP=m
+CONFIG_MISDN_L1OIP=m
+
+#
+# mISDN hardware drivers
+#
+CONFIG_MISDN_HFCPCI=m
+CONFIG_MISDN_HFCMULTI=m
+CONFIG_MISDN_HFCUSB=m
+CONFIG_MISDN_AVMFRITZ=m
+CONFIG_MISDN_SPEEDFAX=m
+CONFIG_MISDN_INFINEON=m
+CONFIG_MISDN_W6692=m
+CONFIG_MISDN_NETJET=m
+CONFIG_MISDN_HDLC=m
+CONFIG_MISDN_IPAC=m
+CONFIG_MISDN_ISAR=m
+CONFIG_NVM=y
+# CONFIG_NVM_PBLK is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+CONFIG_INPUT_LEDS=m
+CONFIG_INPUT_FF_MEMLESS=m
+CONFIG_INPUT_POLLDEV=m
+CONFIG_INPUT_SPARSEKMAP=m
+CONFIG_INPUT_MATRIXKMAP=m
+
+#
+# Userland interfaces
+#
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_INPUT_JOYDEV=m
+CONFIG_INPUT_EVDEV=m
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ADC is not set
+CONFIG_KEYBOARD_ADP5520=m
+# CONFIG_KEYBOARD_ADP5588 is not set
+# CONFIG_KEYBOARD_ADP5589 is not set
+CONFIG_KEYBOARD_APPLESPI=m
+CONFIG_KEYBOARD_ATKBD=y
+# CONFIG_KEYBOARD_QT1050 is not set
+# CONFIG_KEYBOARD_QT1070 is not set
+CONFIG_KEYBOARD_QT2160=m
+CONFIG_KEYBOARD_DLINK_DIR685=m
+CONFIG_KEYBOARD_LKKBD=m
+CONFIG_KEYBOARD_GPIO=m
+CONFIG_KEYBOARD_GPIO_POLLED=m
+CONFIG_KEYBOARD_TCA6416=m
+CONFIG_KEYBOARD_TCA8418=m
+# CONFIG_KEYBOARD_MATRIX is not set
+# CONFIG_KEYBOARD_LM8323 is not set
+# CONFIG_KEYBOARD_LM8333 is not set
+# CONFIG_KEYBOARD_MAX7359 is not set
+# CONFIG_KEYBOARD_MCS is not set
+# CONFIG_KEYBOARD_MPR121 is not set
+CONFIG_KEYBOARD_NEWTON=m
+# CONFIG_KEYBOARD_OPENCORES is not set
+CONFIG_KEYBOARD_SAMSUNG=m
+CONFIG_KEYBOARD_STOWAWAY=m
+CONFIG_KEYBOARD_SUNKBD=m
+# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
+CONFIG_KEYBOARD_TWL4030=m
+CONFIG_KEYBOARD_XTKBD=m
+CONFIG_KEYBOARD_CROS_EC=m
+CONFIG_INPUT_MOUSE=y
+CONFIG_MOUSE_PS2=m
+CONFIG_MOUSE_PS2_ALPS=y
+CONFIG_MOUSE_PS2_BYD=y
+CONFIG_MOUSE_PS2_LOGIPS2PP=y
+CONFIG_MOUSE_PS2_SYNAPTICS=y
+CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y
+CONFIG_MOUSE_PS2_CYPRESS=y
+CONFIG_MOUSE_PS2_LIFEBOOK=y
+CONFIG_MOUSE_PS2_TRACKPOINT=y
+CONFIG_MOUSE_PS2_ELANTECH=y
+CONFIG_MOUSE_PS2_ELANTECH_SMBUS=y
+CONFIG_MOUSE_PS2_SENTELIC=y
+CONFIG_MOUSE_PS2_TOUCHKIT=y
+CONFIG_MOUSE_PS2_FOCALTECH=y
+CONFIG_MOUSE_PS2_VMMOUSE=y
+CONFIG_MOUSE_PS2_SMBUS=y
+CONFIG_MOUSE_SERIAL=m
+CONFIG_MOUSE_APPLETOUCH=m
+CONFIG_MOUSE_BCM5974=m
+CONFIG_MOUSE_CYAPA=m
+CONFIG_MOUSE_ELAN_I2C=m
+CONFIG_MOUSE_ELAN_I2C_I2C=y
+CONFIG_MOUSE_ELAN_I2C_SMBUS=y
+CONFIG_MOUSE_VSXXXAA=m
+# CONFIG_MOUSE_GPIO is not set
+# CONFIG_MOUSE_SYNAPTICS_I2C is not set
+CONFIG_MOUSE_SYNAPTICS_USB=m
+CONFIG_INPUT_JOYSTICK=y
+CONFIG_JOYSTICK_ANALOG=m
+CONFIG_JOYSTICK_A3D=m
+CONFIG_JOYSTICK_ADI=m
+CONFIG_JOYSTICK_COBRA=m
+CONFIG_JOYSTICK_GF2K=m
+CONFIG_JOYSTICK_GRIP=m
+CONFIG_JOYSTICK_GRIP_MP=m
+CONFIG_JOYSTICK_GUILLEMOT=m
+CONFIG_JOYSTICK_INTERACT=m
+CONFIG_JOYSTICK_SIDEWINDER=m
+CONFIG_JOYSTICK_TMDC=m
+CONFIG_JOYSTICK_IFORCE=m
+CONFIG_JOYSTICK_IFORCE_USB=m
+CONFIG_JOYSTICK_IFORCE_232=m
+CONFIG_JOYSTICK_WARRIOR=m
+CONFIG_JOYSTICK_MAGELLAN=m
+CONFIG_JOYSTICK_SPACEORB=m
+CONFIG_JOYSTICK_SPACEBALL=m
+CONFIG_JOYSTICK_STINGER=m
+CONFIG_JOYSTICK_TWIDJOY=m
+CONFIG_JOYSTICK_ZHENHUA=m
+CONFIG_JOYSTICK_DB9=m
+CONFIG_JOYSTICK_GAMECON=m
+CONFIG_JOYSTICK_TURBOGRAFX=m
+CONFIG_JOYSTICK_AS5011=m
+CONFIG_JOYSTICK_JOYDUMP=m
+CONFIG_JOYSTICK_XPAD=m
+CONFIG_JOYSTICK_XPAD_FF=y
+CONFIG_JOYSTICK_XPAD_LEDS=y
+CONFIG_JOYSTICK_WALKERA0701=m
+# CONFIG_JOYSTICK_PSXPAD_SPI is not set
+CONFIG_JOYSTICK_PXRC=m
+# CONFIG_JOYSTICK_FSIA6B is not set
+CONFIG_INPUT_TABLET=y
+CONFIG_TABLET_USB_ACECAD=m
+CONFIG_TABLET_USB_AIPTEK=m
+CONFIG_TABLET_USB_GTCO=m
+CONFIG_TABLET_USB_HANWANG=m
+CONFIG_TABLET_USB_KBTAB=m
+CONFIG_TABLET_USB_PEGASUS=m
+CONFIG_TABLET_SERIAL_WACOM4=m
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_PROPERTIES=y
+CONFIG_TOUCHSCREEN_88PM860X=m
+CONFIG_TOUCHSCREEN_ADS7846=m
+CONFIG_TOUCHSCREEN_AD7877=m
+CONFIG_TOUCHSCREEN_AD7879=m
+CONFIG_TOUCHSCREEN_AD7879_I2C=m
+CONFIG_TOUCHSCREEN_AD7879_SPI=m
+CONFIG_TOUCHSCREEN_ADC=m
+CONFIG_TOUCHSCREEN_ATMEL_MXT=m
+# CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 is not set
+CONFIG_TOUCHSCREEN_AUO_PIXCIR=m
+CONFIG_TOUCHSCREEN_BU21013=m
+CONFIG_TOUCHSCREEN_BU21029=m
+# CONFIG_TOUCHSCREEN_CHIPONE_ICN8505 is not set
+CONFIG_TOUCHSCREEN_CY8CTMG110=m
+CONFIG_TOUCHSCREEN_CYTTSP_CORE=m
+CONFIG_TOUCHSCREEN_CYTTSP_I2C=m
+CONFIG_TOUCHSCREEN_CYTTSP_SPI=m
+CONFIG_TOUCHSCREEN_CYTTSP4_CORE=m
+CONFIG_TOUCHSCREEN_CYTTSP4_I2C=m
+CONFIG_TOUCHSCREEN_CYTTSP4_SPI=m
+CONFIG_TOUCHSCREEN_DA9034=m
+CONFIG_TOUCHSCREEN_DA9052=m
+CONFIG_TOUCHSCREEN_DYNAPRO=m
+CONFIG_TOUCHSCREEN_HAMPSHIRE=m
+CONFIG_TOUCHSCREEN_EETI=m
+CONFIG_TOUCHSCREEN_EGALAX_SERIAL=m
+# CONFIG_TOUCHSCREEN_EXC3000 is not set
+CONFIG_TOUCHSCREEN_FUJITSU=m
+CONFIG_TOUCHSCREEN_GOODIX=m
+# CONFIG_TOUCHSCREEN_HIDEEP is not set
+CONFIG_TOUCHSCREEN_ILI210X=m
+# CONFIG_TOUCHSCREEN_S6SY761 is not set
+CONFIG_TOUCHSCREEN_GUNZE=m
+CONFIG_TOUCHSCREEN_EKTF2127=m
+CONFIG_TOUCHSCREEN_ELAN=m
+CONFIG_TOUCHSCREEN_ELO=m
+CONFIG_TOUCHSCREEN_WACOM_W8001=m
+CONFIG_TOUCHSCREEN_WACOM_I2C=m
+CONFIG_TOUCHSCREEN_MAX11801=m
+CONFIG_TOUCHSCREEN_MCS5000=m
+CONFIG_TOUCHSCREEN_MMS114=m
+CONFIG_TOUCHSCREEN_MELFAS_MIP4=m
+CONFIG_TOUCHSCREEN_MTOUCH=m
+CONFIG_TOUCHSCREEN_INEXIO=m
+CONFIG_TOUCHSCREEN_MK712=m
+CONFIG_TOUCHSCREEN_PENMOUNT=m
+CONFIG_TOUCHSCREEN_EDT_FT5X06=m
+CONFIG_TOUCHSCREEN_TOUCHRIGHT=m
+CONFIG_TOUCHSCREEN_TOUCHWIN=m
+CONFIG_TOUCHSCREEN_TI_AM335X_TSC=m
+CONFIG_TOUCHSCREEN_PIXCIR=m
+CONFIG_TOUCHSCREEN_WDT87XX_I2C=m
+CONFIG_TOUCHSCREEN_WM831X=m
+CONFIG_TOUCHSCREEN_WM97XX=m
+CONFIG_TOUCHSCREEN_WM9705=y
+CONFIG_TOUCHSCREEN_WM9712=y
+CONFIG_TOUCHSCREEN_WM9713=y
+CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
+CONFIG_TOUCHSCREEN_MC13783=m
+CONFIG_TOUCHSCREEN_USB_EGALAX=y
+CONFIG_TOUCHSCREEN_USB_PANJIT=y
+CONFIG_TOUCHSCREEN_USB_3M=y
+CONFIG_TOUCHSCREEN_USB_ITM=y
+CONFIG_TOUCHSCREEN_USB_ETURBO=y
+CONFIG_TOUCHSCREEN_USB_GUNZE=y
+CONFIG_TOUCHSCREEN_USB_DMC_TSC10=y
+CONFIG_TOUCHSCREEN_USB_IRTOUCH=y
+CONFIG_TOUCHSCREEN_USB_IDEALTEK=y
+CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH=y
+CONFIG_TOUCHSCREEN_USB_GOTOP=y
+CONFIG_TOUCHSCREEN_USB_JASTEC=y
+CONFIG_TOUCHSCREEN_USB_ELO=y
+CONFIG_TOUCHSCREEN_USB_E2I=y
+CONFIG_TOUCHSCREEN_USB_ZYTRONIC=y
+CONFIG_TOUCHSCREEN_USB_ETT_TC45USB=y
+CONFIG_TOUCHSCREEN_USB_NEXIO=y
+CONFIG_TOUCHSCREEN_USB_EASYTOUCH=y
+CONFIG_TOUCHSCREEN_TOUCHIT213=m
+CONFIG_TOUCHSCREEN_TSC_SERIO=m
+CONFIG_TOUCHSCREEN_TSC200X_CORE=m
+CONFIG_TOUCHSCREEN_TSC2004=m
+CONFIG_TOUCHSCREEN_TSC2005=m
+CONFIG_TOUCHSCREEN_TSC2007=m
+# CONFIG_TOUCHSCREEN_TSC2007_IIO is not set
+CONFIG_TOUCHSCREEN_PCAP=m
+CONFIG_TOUCHSCREEN_RM_TS=m
+CONFIG_TOUCHSCREEN_SILEAD=m
+CONFIG_TOUCHSCREEN_SIS_I2C=m
+CONFIG_TOUCHSCREEN_ST1232=m
+CONFIG_TOUCHSCREEN_STMFTS=m
+CONFIG_TOUCHSCREEN_SUR40=m
+CONFIG_TOUCHSCREEN_SURFACE3_SPI=m
+# CONFIG_TOUCHSCREEN_SX8654 is not set
+CONFIG_TOUCHSCREEN_TPS6507X=m
+CONFIG_TOUCHSCREEN_ZET6223=m
+CONFIG_TOUCHSCREEN_ZFORCE=m
+CONFIG_TOUCHSCREEN_ROHM_BU21023=m
+# CONFIG_TOUCHSCREEN_IQS5XX is not set
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_88PM860X_ONKEY=m
+CONFIG_INPUT_88PM80X_ONKEY=m
+CONFIG_INPUT_AD714X=m
+CONFIG_INPUT_AD714X_I2C=m
+CONFIG_INPUT_AD714X_SPI=m
+# CONFIG_INPUT_ARIZONA_HAPTICS is not set
+CONFIG_INPUT_BMA150=m
+# CONFIG_INPUT_E3X0_BUTTON is not set
+# CONFIG_INPUT_MSM_VIBRATOR is not set
+CONFIG_INPUT_PCSPKR=m
+CONFIG_INPUT_MAX77693_HAPTIC=m
+CONFIG_INPUT_MAX8925_ONKEY=m
+CONFIG_INPUT_MAX8997_HAPTIC=m
+CONFIG_INPUT_MC13783_PWRBUTTON=m
+# CONFIG_INPUT_MMA8450 is not set
+CONFIG_INPUT_APANEL=m
+CONFIG_INPUT_GP2A=m
+CONFIG_INPUT_GPIO_BEEPER=m
+# CONFIG_INPUT_GPIO_DECODER is not set
+# CONFIG_INPUT_GPIO_VIBRA is not set
+CONFIG_INPUT_ATLAS_BTNS=m
+CONFIG_INPUT_ATI_REMOTE2=m
+CONFIG_INPUT_KEYSPAN_REMOTE=m
+# CONFIG_INPUT_KXTJ9 is not set
+CONFIG_INPUT_POWERMATE=m
+CONFIG_INPUT_YEALINK=m
+CONFIG_INPUT_CM109=m
+CONFIG_INPUT_REGULATOR_HAPTIC=m
+CONFIG_INPUT_RETU_PWRBUTTON=m
+# CONFIG_INPUT_AXP20X_PEK is not set
+CONFIG_INPUT_TWL4030_PWRBUTTON=m
+CONFIG_INPUT_TWL4030_VIBRA=m
+CONFIG_INPUT_TWL6040_VIBRA=m
+CONFIG_INPUT_UINPUT=m
+CONFIG_INPUT_PALMAS_PWRBUTTON=m
+CONFIG_INPUT_PCF8574=m
+CONFIG_INPUT_PWM_BEEPER=m
+CONFIG_INPUT_PWM_VIBRA=m
+CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
+CONFIG_INPUT_DA9052_ONKEY=m
+CONFIG_INPUT_DA9055_ONKEY=m
+CONFIG_INPUT_DA9063_ONKEY=m
+CONFIG_INPUT_WM831X_ON=m
+CONFIG_INPUT_PCAP=m
+# CONFIG_INPUT_ADXL34X is not set
+CONFIG_INPUT_IMS_PCU=m
+CONFIG_INPUT_CMA3000=m
+CONFIG_INPUT_CMA3000_I2C=m
+CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
+CONFIG_INPUT_IDEAPAD_SLIDEBAR=m
+CONFIG_INPUT_SOC_BUTTON_ARRAY=m
+CONFIG_INPUT_DRV260X_HAPTICS=m
+CONFIG_INPUT_DRV2665_HAPTICS=m
+CONFIG_INPUT_DRV2667_HAPTICS=m
+CONFIG_RMI4_CORE=m
+CONFIG_RMI4_I2C=m
+CONFIG_RMI4_SPI=m
+CONFIG_RMI4_SMB=m
+CONFIG_RMI4_F03=y
+CONFIG_RMI4_F03_SERIO=m
+CONFIG_RMI4_2D_SENSOR=y
+CONFIG_RMI4_F11=y
+CONFIG_RMI4_F12=y
+CONFIG_RMI4_F30=y
+CONFIG_RMI4_F34=y
+CONFIG_RMI4_F54=y
+CONFIG_RMI4_F55=y
+
+#
+# Hardware I/O ports
+#
+CONFIG_SERIO=y
+CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
+CONFIG_SERIO_I8042=y
+CONFIG_SERIO_SERPORT=m
+CONFIG_SERIO_CT82C710=m
+CONFIG_SERIO_PARKBD=m
+CONFIG_SERIO_PCIPS2=m
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_RAW=m
+CONFIG_SERIO_ALTERA_PS2=m
+CONFIG_SERIO_PS2MULT=m
+CONFIG_SERIO_ARC_PS2=m
+CONFIG_HYPERV_KEYBOARD=m
+CONFIG_SERIO_GPIO_PS2=m
+CONFIG_USERIO=m
+CONFIG_GAMEPORT=m
+CONFIG_GAMEPORT_NS558=m
+CONFIG_GAMEPORT_L4=m
+CONFIG_GAMEPORT_EMU10K1=m
+CONFIG_GAMEPORT_FM801=m
+# end of Hardware I/O ports
+# end of Input device support
+
+#
+# Character devices
+#
+CONFIG_TTY=y
+CONFIG_VT=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_HW_CONSOLE=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=0
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_ROCKETPORT=m
+CONFIG_CYCLADES=m
+# CONFIG_CYZ_INTR is not set
+CONFIG_MOXA_INTELLIO=m
+CONFIG_MOXA_SMARTIO=m
+CONFIG_SYNCLINK=m
+CONFIG_SYNCLINKMP=m
+CONFIG_SYNCLINK_GT=m
+CONFIG_NOZOMI=m
+CONFIG_ISI=m
+CONFIG_N_HDLC=m
+CONFIG_N_GSM=m
+CONFIG_TRACE_ROUTER=m
+CONFIG_TRACE_SINK=m
+# CONFIG_NULL_TTY is not set
+CONFIG_LDISC_AUTOLOAD=y
+CONFIG_DEVMEM=y
+# CONFIG_DEVKMEM is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_EARLYCON=y
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+CONFIG_SERIAL_8250_PNP=y
+CONFIG_SERIAL_8250_FINTEK=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_DMA=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_EXAR=y
+CONFIG_SERIAL_8250_CS=m
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_DWLIB=y
+CONFIG_SERIAL_8250_DW=m
+CONFIG_SERIAL_8250_RT288X=y
+CONFIG_SERIAL_8250_LPSS=m
+CONFIG_SERIAL_8250_MID=m
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_MAX3100=m
+CONFIG_SERIAL_MAX310X=m
+CONFIG_SERIAL_UARTLITE=m
+CONFIG_SERIAL_UARTLITE_NR_UARTS=1
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_SERIAL_JSM=m
+CONFIG_SERIAL_SCCNXP=m
+CONFIG_SERIAL_SC16IS7XX_CORE=m
+CONFIG_SERIAL_SC16IS7XX=m
+CONFIG_SERIAL_SC16IS7XX_I2C=y
+# CONFIG_SERIAL_SC16IS7XX_SPI is not set
+CONFIG_SERIAL_ALTERA_JTAGUART=m
+CONFIG_SERIAL_ALTERA_UART=m
+CONFIG_SERIAL_ALTERA_UART_MAXPORTS=4
+CONFIG_SERIAL_ALTERA_UART_BAUDRATE=115200
+CONFIG_SERIAL_IFX6X60=m
+CONFIG_SERIAL_ARC=m
+CONFIG_SERIAL_ARC_NR_PORTS=1
+CONFIG_SERIAL_RP2=m
+CONFIG_SERIAL_RP2_NR_UARTS=32
+CONFIG_SERIAL_FSL_LPUART=m
+# CONFIG_SERIAL_FSL_LINFLEXUART is not set
+# end of Serial drivers
+
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_DEV_BUS=m
+# CONFIG_TTY_PRINTK is not set
+CONFIG_PRINTER=m
+CONFIG_LP_CONSOLE=y
+CONFIG_PPDEV=m
+CONFIG_HVC_DRIVER=y
+CONFIG_HVC_IRQ=y
+CONFIG_HVC_XEN=y
+CONFIG_HVC_XEN_FRONTEND=y
+CONFIG_VIRTIO_CONSOLE=m
+CONFIG_IPMI_HANDLER=m
+CONFIG_IPMI_DMI_DECODE=y
+CONFIG_IPMI_PLAT_DATA=y
+CONFIG_IPMI_PANIC_EVENT=y
+CONFIG_IPMI_PANIC_STRING=y
+CONFIG_IPMI_DEVICE_INTERFACE=m
+CONFIG_IPMI_SI=m
+CONFIG_IPMI_SSIF=m
+CONFIG_IPMI_WATCHDOG=m
+CONFIG_IPMI_POWEROFF=m
+CONFIG_IPMB_DEVICE_INTERFACE=m
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_TIMERIOMEM=m
+CONFIG_HW_RANDOM_INTEL=m
+CONFIG_HW_RANDOM_AMD=m
+CONFIG_HW_RANDOM_VIA=m
+CONFIG_HW_RANDOM_VIRTIO=m
+CONFIG_NVRAM=m
+CONFIG_APPLICOM=m
+
+#
+# PCMCIA character devices
+#
+CONFIG_SYNCLINK_CS=m
+CONFIG_CARDMAN_4000=m
+CONFIG_CARDMAN_4040=m
+CONFIG_SCR24X=m
+CONFIG_IPWIRELESS=m
+# end of PCMCIA character devices
+
+CONFIG_MWAVE=m
+CONFIG_RAW_DRIVER=m
+CONFIG_MAX_RAW_DEVS=256
+CONFIG_HPET=y
+CONFIG_HPET_MMAP=y
+CONFIG_HPET_MMAP_DEFAULT=y
+CONFIG_HANGCHECK_TIMER=m
+CONFIG_TCG_TPM=m
+CONFIG_HW_RANDOM_TPM=y
+CONFIG_TCG_TIS_CORE=m
+CONFIG_TCG_TIS=m
+CONFIG_TCG_TIS_SPI=m
+CONFIG_TCG_TIS_I2C_ATMEL=m
+CONFIG_TCG_TIS_I2C_INFINEON=m
+CONFIG_TCG_TIS_I2C_NUVOTON=m
+CONFIG_TCG_NSC=m
+CONFIG_TCG_ATMEL=m
+CONFIG_TCG_INFINEON=m
+CONFIG_TCG_XEN=m
+CONFIG_TCG_CRB=m
+CONFIG_TCG_VTPM_PROXY=m
+CONFIG_TCG_TIS_ST33ZP24=m
+CONFIG_TCG_TIS_ST33ZP24_I2C=m
+CONFIG_TCG_TIS_ST33ZP24_SPI=m
+CONFIG_TELCLOCK=m
+CONFIG_DEVPORT=y
+CONFIG_XILLYBUS=m
+CONFIG_XILLYBUS_PCIE=m
+# end of Character devices
+
+CONFIG_RANDOM_TRUST_CPU=y
+CONFIG_RANDOM_TRUST_BOOTLOADER=y
+
+#
+# I2C support
+#
+CONFIG_I2C=y
+CONFIG_ACPI_I2C_OPREGION=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_COMPAT=y
+CONFIG_I2C_CHARDEV=m
+CONFIG_I2C_MUX=m
+
+#
+# Multiplexer I2C Chip support
+#
+CONFIG_I2C_MUX_GPIO=m
+CONFIG_I2C_MUX_LTC4306=m
+CONFIG_I2C_MUX_PCA9541=m
+CONFIG_I2C_MUX_PCA954x=m
+CONFIG_I2C_MUX_REG=m
+CONFIG_I2C_MUX_MLXCPLD=m
+# end of Multiplexer I2C Chip support
+
+CONFIG_I2C_HELPER_AUTO=y
+CONFIG_I2C_SMBUS=m
+CONFIG_I2C_ALGOBIT=m
+
+#
+# I2C Hardware Bus support
+#
+
+#
+# PC SMBus host controller drivers
+#
+CONFIG_I2C_ALI1535=m
+CONFIG_I2C_ALI1563=m
+CONFIG_I2C_ALI15X3=m
+CONFIG_I2C_AMD756=m
+CONFIG_I2C_AMD756_S4882=m
+CONFIG_I2C_AMD8111=m
+CONFIG_I2C_AMD_MP2=m
+CONFIG_I2C_I801=m
+CONFIG_I2C_ISCH=m
+CONFIG_I2C_ISMT=m
+CONFIG_I2C_PIIX4=m
+CONFIG_I2C_CHT_WC=m
+CONFIG_I2C_NFORCE2=m
+CONFIG_I2C_NFORCE2_S4985=m
+CONFIG_I2C_NVIDIA_GPU=m
+CONFIG_I2C_SIS5595=m
+CONFIG_I2C_SIS630=m
+CONFIG_I2C_SIS96X=m
+CONFIG_I2C_VIA=m
+CONFIG_I2C_VIAPRO=m
+
+#
+# ACPI drivers
+#
+CONFIG_I2C_SCMI=m
+
+#
+# I2C system bus drivers (mostly embedded / system-on-chip)
+#
+CONFIG_I2C_CBUS_GPIO=m
+CONFIG_I2C_DESIGNWARE_CORE=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_I2C_DESIGNWARE_SLAVE=y
+CONFIG_I2C_DESIGNWARE_PCI=m
+CONFIG_I2C_DESIGNWARE_BAYTRAIL=y
+CONFIG_I2C_EMEV2=m
+# CONFIG_I2C_GPIO is not set
+CONFIG_I2C_KEMPLD=m
+# CONFIG_I2C_OCORES is not set
+# CONFIG_I2C_PCA_PLATFORM is not set
+# CONFIG_I2C_SIMTEC is not set
+CONFIG_I2C_XILINX=m
+
+#
+# External I2C/SMBus adapter drivers
+#
+CONFIG_I2C_DIOLAN_U2C=m
+CONFIG_I2C_DLN2=m
+CONFIG_I2C_PARPORT=m
+CONFIG_I2C_PARPORT_LIGHT=m
+CONFIG_I2C_ROBOTFUZZ_OSIF=m
+CONFIG_I2C_TAOS_EVM=m
+CONFIG_I2C_TINY_USB=m
+CONFIG_I2C_VIPERBOARD=m
+
+#
+# Other I2C/SMBus bus drivers
+#
+CONFIG_I2C_MLXCPLD=m
+CONFIG_I2C_CROS_EC_TUNNEL=m
+# end of I2C Hardware Bus support
+
+# CONFIG_I2C_STUB is not set
+CONFIG_I2C_SLAVE=y
+CONFIG_I2C_SLAVE_EEPROM=m
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# end of I2C support
+
+CONFIG_I3C=m
+CONFIG_CDNS_I3C_MASTER=m
+CONFIG_DW_I3C_MASTER=m
+CONFIG_SPI=y
+# CONFIG_SPI_DEBUG is not set
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
+
+#
+# SPI Master Controller Drivers
+#
+CONFIG_SPI_ALTERA=m
+CONFIG_SPI_AXI_SPI_ENGINE=m
+CONFIG_SPI_BITBANG=m
+CONFIG_SPI_BUTTERFLY=m
+# CONFIG_SPI_CADENCE is not set
+CONFIG_SPI_DESIGNWARE=m
+CONFIG_SPI_DW_PCI=m
+CONFIG_SPI_DW_MID_DMA=y
+CONFIG_SPI_DW_MMIO=m
+# CONFIG_SPI_DLN2 is not set
+# CONFIG_SPI_NXP_FLEXSPI is not set
+CONFIG_SPI_GPIO=m
+CONFIG_SPI_LM70_LLP=m
+CONFIG_SPI_OC_TINY=m
+CONFIG_SPI_PXA2XX=m
+CONFIG_SPI_PXA2XX_PCI=m
+CONFIG_SPI_ROCKCHIP=m
+CONFIG_SPI_SC18IS602=m
+# CONFIG_SPI_SIFIVE is not set
+# CONFIG_SPI_MXIC is not set
+CONFIG_SPI_XCOMM=m
+CONFIG_SPI_XILINX=m
+CONFIG_SPI_ZYNQMP_GQSPI=m
+
+#
+# SPI Protocol Masters
+#
+CONFIG_SPI_SPIDEV=m
+CONFIG_SPI_LOOPBACK_TEST=m
+CONFIG_SPI_TLE62X0=m
+# CONFIG_SPI_SLAVE is not set
+CONFIG_SPMI=m
+CONFIG_HSI=m
+CONFIG_HSI_BOARDINFO=y
+
+#
+# HSI controllers
+#
+
+#
+# HSI clients
+#
+CONFIG_HSI_CHAR=m
+CONFIG_PPS=m
+# CONFIG_PPS_DEBUG is not set
+
+#
+# PPS clients support
+#
+CONFIG_PPS_CLIENT_KTIMER=m
+CONFIG_PPS_CLIENT_LDISC=m
+CONFIG_PPS_CLIENT_PARPORT=m
+CONFIG_PPS_CLIENT_GPIO=m
+
+#
+# PPS generators support
+#
+
+#
+# PTP clock support
+#
+CONFIG_PTP_1588_CLOCK=m
+
+#
+# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
+#
+CONFIG_PTP_1588_CLOCK_KVM=m
+# end of PTP clock support
+
+CONFIG_PINCTRL=y
+CONFIG_PINMUX=y
+CONFIG_PINCONF=y
+CONFIG_GENERIC_PINCONF=y
+# CONFIG_DEBUG_PINCTRL is not set
+CONFIG_PINCTRL_AMD=y
+# CONFIG_PINCTRL_MCP23S08 is not set
+CONFIG_PINCTRL_SX150X=y
+CONFIG_PINCTRL_BAYTRAIL=y
+CONFIG_PINCTRL_CHERRYVIEW=m
+CONFIG_PINCTRL_INTEL=m
+CONFIG_PINCTRL_BROXTON=m
+CONFIG_PINCTRL_CANNONLAKE=m
+CONFIG_PINCTRL_CEDARFORK=m
+CONFIG_PINCTRL_DENVERTON=m
+CONFIG_PINCTRL_GEMINILAKE=m
+CONFIG_PINCTRL_ICELAKE=m
+CONFIG_PINCTRL_LEWISBURG=m
+CONFIG_PINCTRL_SUNRISEPOINT=m
+CONFIG_PINCTRL_MADERA=m
+CONFIG_PINCTRL_CS47L15=y
+CONFIG_PINCTRL_CS47L35=y
+CONFIG_PINCTRL_CS47L85=y
+CONFIG_PINCTRL_CS47L90=y
+CONFIG_PINCTRL_CS47L92=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_FASTPATH_LIMIT=512
+CONFIG_GPIO_ACPI=y
+CONFIG_GPIOLIB_IRQCHIP=y
+# CONFIG_DEBUG_GPIO is not set
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_GENERIC=m
+CONFIG_GPIO_MAX730X=m
+
+#
+# Memory mapped GPIO drivers
+#
+CONFIG_GPIO_AMDPT=m
+# CONFIG_GPIO_DWAPB is not set
+CONFIG_GPIO_EXAR=m
+CONFIG_GPIO_GENERIC_PLATFORM=m
+CONFIG_GPIO_ICH=m
+CONFIG_GPIO_LYNXPOINT=y
+# CONFIG_GPIO_MB86S7X is not set
+CONFIG_GPIO_VX855=m
+CONFIG_GPIO_XILINX=m
+CONFIG_GPIO_AMD_FCH=m
+# end of Memory mapped GPIO drivers
+
+#
+# Port-mapped I/O GPIO drivers
+#
+CONFIG_GPIO_F7188X=m
+CONFIG_GPIO_IT87=m
+CONFIG_GPIO_SCH=m
+CONFIG_GPIO_SCH311X=m
+CONFIG_GPIO_WINBOND=m
+CONFIG_GPIO_WS16C48=m
+# end of Port-mapped I/O GPIO drivers
+
+#
+# I2C GPIO expanders
+#
+CONFIG_GPIO_ADP5588=m
+CONFIG_GPIO_MAX7300=m
+CONFIG_GPIO_MAX732X=m
+CONFIG_GPIO_PCA953X=m
+CONFIG_GPIO_PCF857X=m
+CONFIG_GPIO_TPIC2810=m
+# end of I2C GPIO expanders
+
+#
+# MFD GPIO expanders
+#
+CONFIG_GPIO_ADP5520=m
+CONFIG_GPIO_ARIZONA=m
+CONFIG_GPIO_BD9571MWV=m
+CONFIG_GPIO_CRYSTAL_COVE=y
+CONFIG_GPIO_DA9052=m
+CONFIG_GPIO_DA9055=m
+CONFIG_GPIO_DLN2=m
+CONFIG_GPIO_KEMPLD=m
+CONFIG_GPIO_LP3943=m
+CONFIG_GPIO_MADERA=m
+CONFIG_GPIO_PALMAS=y
+CONFIG_GPIO_RC5T583=y
+CONFIG_GPIO_TPS65086=m
+CONFIG_GPIO_TPS6586X=y
+CONFIG_GPIO_TPS65910=y
+CONFIG_GPIO_TPS65912=m
+CONFIG_GPIO_TPS68470=y
+CONFIG_GPIO_TWL4030=m
+CONFIG_GPIO_TWL6040=m
+CONFIG_GPIO_WHISKEY_COVE=m
+CONFIG_GPIO_WM831X=m
+CONFIG_GPIO_WM8350=m
+CONFIG_GPIO_WM8994=m
+# end of MFD GPIO expanders
+
+#
+# PCI GPIO expanders
+#
+CONFIG_GPIO_AMD8111=m
+CONFIG_GPIO_ML_IOH=m
+CONFIG_GPIO_PCI_IDIO_16=m
+# CONFIG_GPIO_PCIE_IDIO_24 is not set
+CONFIG_GPIO_RDC321X=m
+# end of PCI GPIO expanders
+
+#
+# SPI GPIO expanders
+#
+# CONFIG_GPIO_MAX3191X is not set
+CONFIG_GPIO_MAX7301=m
+CONFIG_GPIO_MC33880=m
+CONFIG_GPIO_PISOSR=m
+# CONFIG_GPIO_XRA1403 is not set
+# end of SPI GPIO expanders
+
+#
+# USB GPIO expanders
+#
+CONFIG_GPIO_VIPERBOARD=m
+# end of USB GPIO expanders
+
+# CONFIG_GPIO_MOCKUP is not set
+CONFIG_W1=m
+CONFIG_W1_CON=y
+
+#
+# 1-wire Bus Masters
+#
+CONFIG_W1_MASTER_MATROX=m
+CONFIG_W1_MASTER_DS2490=m
+CONFIG_W1_MASTER_DS2482=m
+CONFIG_W1_MASTER_DS1WM=m
+# CONFIG_W1_MASTER_GPIO is not set
+CONFIG_W1_MASTER_SGI=m
+# end of 1-wire Bus Masters
+
+#
+# 1-wire Slaves
+#
+CONFIG_W1_SLAVE_THERM=m
+CONFIG_W1_SLAVE_SMEM=m
+# CONFIG_W1_SLAVE_DS2405 is not set
+CONFIG_W1_SLAVE_DS2408=m
+CONFIG_W1_SLAVE_DS2408_READBACK=y
+CONFIG_W1_SLAVE_DS2413=m
+CONFIG_W1_SLAVE_DS2406=m
+CONFIG_W1_SLAVE_DS2423=m
+# CONFIG_W1_SLAVE_DS2805 is not set
+CONFIG_W1_SLAVE_DS2431=m
+CONFIG_W1_SLAVE_DS2433=m
+# CONFIG_W1_SLAVE_DS2433_CRC is not set
+# CONFIG_W1_SLAVE_DS2438 is not set
+# CONFIG_W1_SLAVE_DS250X is not set
+CONFIG_W1_SLAVE_DS2780=m
+CONFIG_W1_SLAVE_DS2781=m
+CONFIG_W1_SLAVE_DS28E04=m
+# CONFIG_W1_SLAVE_DS28E17 is not set
+# end of 1-wire Slaves
+
+CONFIG_POWER_AVS=y
+# CONFIG_POWER_RESET is not set
+CONFIG_POWER_SUPPLY=y
+# CONFIG_POWER_SUPPLY_DEBUG is not set
+CONFIG_POWER_SUPPLY_HWMON=y
+# CONFIG_PDA_POWER is not set
+CONFIG_GENERIC_ADC_BATTERY=m
+CONFIG_MAX8925_POWER=m
+CONFIG_WM831X_BACKUP=m
+CONFIG_WM831X_POWER=m
+CONFIG_WM8350_POWER=m
+# CONFIG_TEST_POWER is not set
+CONFIG_BATTERY_88PM860X=m
+CONFIG_CHARGER_ADP5061=m
+CONFIG_BATTERY_DS2760=m
+CONFIG_BATTERY_DS2780=m
+CONFIG_BATTERY_DS2781=m
+CONFIG_BATTERY_DS2782=m
+CONFIG_BATTERY_SBS=m
+CONFIG_CHARGER_SBS=m
+# CONFIG_MANAGER_SBS is not set
+CONFIG_BATTERY_BQ27XXX=m
+CONFIG_BATTERY_BQ27XXX_I2C=m
+CONFIG_BATTERY_BQ27XXX_HDQ=m
+# CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM is not set
+CONFIG_BATTERY_DA9030=m
+CONFIG_BATTERY_DA9052=m
+CONFIG_AXP20X_POWER=m
+CONFIG_AXP288_CHARGER=m
+CONFIG_AXP288_FUEL_GAUGE=m
+# CONFIG_BATTERY_MAX17040 is not set
+CONFIG_BATTERY_MAX17042=m
+# CONFIG_BATTERY_MAX1721X is not set
+CONFIG_BATTERY_TWL4030_MADC=m
+CONFIG_CHARGER_88PM860X=m
+CONFIG_BATTERY_RX51=m
+CONFIG_CHARGER_ISP1704=m
+CONFIG_CHARGER_MAX8903=m
+CONFIG_CHARGER_TWL4030=m
+CONFIG_CHARGER_LP8727=m
+CONFIG_CHARGER_LP8788=m
+CONFIG_CHARGER_GPIO=m
+CONFIG_CHARGER_MANAGER=y
+CONFIG_CHARGER_LT3651=m
+CONFIG_CHARGER_MAX14577=m
+# CONFIG_CHARGER_MAX77693 is not set
+CONFIG_CHARGER_MAX8997=m
+CONFIG_CHARGER_MAX8998=m
+CONFIG_CHARGER_BQ2415X=m
+CONFIG_CHARGER_BQ24190=m
+CONFIG_CHARGER_BQ24257=m
+CONFIG_CHARGER_BQ24735=m
+CONFIG_CHARGER_BQ25890=m
+CONFIG_CHARGER_SMB347=m
+CONFIG_CHARGER_TPS65090=m
+# CONFIG_BATTERY_GAUGE_LTC2941 is not set
+CONFIG_CHARGER_RT9455=m
+CONFIG_CHARGER_CROS_USBPD=m
+CONFIG_CHARGER_WILCO=m
+CONFIG_HWMON=y
+CONFIG_HWMON_VID=m
+# CONFIG_HWMON_DEBUG_CHIP is not set
+
+#
+# Native drivers
+#
+CONFIG_SENSORS_ABITUGURU=m
+CONFIG_SENSORS_ABITUGURU3=m
+CONFIG_SENSORS_AD7314=m
+CONFIG_SENSORS_AD7414=m
+CONFIG_SENSORS_AD7418=m
+CONFIG_SENSORS_ADM1021=m
+CONFIG_SENSORS_ADM1025=m
+CONFIG_SENSORS_ADM1026=m
+CONFIG_SENSORS_ADM1029=m
+CONFIG_SENSORS_ADM1031=m
+CONFIG_SENSORS_ADM9240=m
+CONFIG_SENSORS_ADT7X10=m
+CONFIG_SENSORS_ADT7310=m
+CONFIG_SENSORS_ADT7410=m
+CONFIG_SENSORS_ADT7411=m
+CONFIG_SENSORS_ADT7462=m
+CONFIG_SENSORS_ADT7470=m
+CONFIG_SENSORS_ADT7475=m
+CONFIG_SENSORS_AS370=m
+CONFIG_SENSORS_ASC7621=m
+CONFIG_SENSORS_K8TEMP=m
+CONFIG_SENSORS_K10TEMP=m
+CONFIG_SENSORS_FAM15H_POWER=m
+CONFIG_SENSORS_APPLESMC=m
+CONFIG_SENSORS_ASB100=m
+CONFIG_SENSORS_ASPEED=m
+CONFIG_SENSORS_ATXP1=m
+CONFIG_SENSORS_DS620=m
+CONFIG_SENSORS_DS1621=m
+CONFIG_SENSORS_DELL_SMM=m
+CONFIG_SENSORS_DA9052_ADC=m
+CONFIG_SENSORS_DA9055=m
+CONFIG_SENSORS_I5K_AMB=m
+CONFIG_SENSORS_F71805F=m
+CONFIG_SENSORS_F71882FG=m
+CONFIG_SENSORS_F75375S=m
+CONFIG_SENSORS_MC13783_ADC=m
+CONFIG_SENSORS_FSCHMD=m
+CONFIG_SENSORS_FTSTEUTATES=m
+CONFIG_SENSORS_GL518SM=m
+CONFIG_SENSORS_GL520SM=m
+# CONFIG_SENSORS_G760A is not set
+CONFIG_SENSORS_G762=m
+CONFIG_SENSORS_HIH6130=m
+CONFIG_SENSORS_IBMAEM=m
+CONFIG_SENSORS_IBMPEX=m
+CONFIG_SENSORS_IIO_HWMON=m
+CONFIG_SENSORS_I5500=m
+CONFIG_SENSORS_CORETEMP=m
+CONFIG_SENSORS_IT87=m
+CONFIG_SENSORS_JC42=m
+CONFIG_SENSORS_POWR1220=m
+CONFIG_SENSORS_LINEAGE=m
+CONFIG_SENSORS_LTC2945=m
+CONFIG_SENSORS_LTC2990=m
+CONFIG_SENSORS_LTC4151=m
+# CONFIG_SENSORS_LTC4215 is not set
+CONFIG_SENSORS_LTC4222=m
+CONFIG_SENSORS_LTC4245=m
+CONFIG_SENSORS_LTC4260=m
+CONFIG_SENSORS_LTC4261=m
+CONFIG_SENSORS_MAX1111=m
+CONFIG_SENSORS_MAX16065=m
+CONFIG_SENSORS_MAX1619=m
+CONFIG_SENSORS_MAX1668=m
+CONFIG_SENSORS_MAX197=m
+CONFIG_SENSORS_MAX31722=m
+# CONFIG_SENSORS_MAX6621 is not set
+CONFIG_SENSORS_MAX6639=m
+CONFIG_SENSORS_MAX6642=m
+CONFIG_SENSORS_MAX6650=m
+# CONFIG_SENSORS_MAX6697 is not set
+CONFIG_SENSORS_MAX31790=m
+CONFIG_SENSORS_MCP3021=m
+CONFIG_SENSORS_MLXREG_FAN=m
+CONFIG_SENSORS_TC654=m
+CONFIG_SENSORS_MENF21BMC_HWMON=m
+CONFIG_SENSORS_ADCXX=m
+CONFIG_SENSORS_LM63=m
+CONFIG_SENSORS_LM70=m
+CONFIG_SENSORS_LM73=m
+CONFIG_SENSORS_LM75=m
+CONFIG_SENSORS_LM77=m
+CONFIG_SENSORS_LM78=m
+CONFIG_SENSORS_LM80=m
+CONFIG_SENSORS_LM83=m
+CONFIG_SENSORS_LM85=m
+CONFIG_SENSORS_LM87=m
+CONFIG_SENSORS_LM90=m
+CONFIG_SENSORS_LM92=m
+CONFIG_SENSORS_LM93=m
+CONFIG_SENSORS_LM95234=m
+CONFIG_SENSORS_LM95241=m
+CONFIG_SENSORS_LM95245=m
+CONFIG_SENSORS_PC87360=m
+CONFIG_SENSORS_PC87427=m
+CONFIG_SENSORS_NTC_THERMISTOR=m
+CONFIG_SENSORS_NCT6683=m
+CONFIG_SENSORS_NCT6775=m
+CONFIG_SENSORS_NCT7802=m
+CONFIG_SENSORS_NCT7904=m
+CONFIG_SENSORS_NPCM7XX=m
+CONFIG_SENSORS_PCF8591=m
+CONFIG_PMBUS=m
+CONFIG_SENSORS_PMBUS=m
+CONFIG_SENSORS_ADM1275=m
+CONFIG_SENSORS_IBM_CFFPS=m
+CONFIG_SENSORS_INSPUR_IPSPS=m
+CONFIG_SENSORS_IR35221=m
+CONFIG_SENSORS_IR38064=m
+CONFIG_SENSORS_IRPS5401=m
+CONFIG_SENSORS_ISL68137=m
+CONFIG_SENSORS_LM25066=m
+CONFIG_SENSORS_LTC2978=m
+CONFIG_SENSORS_LTC2978_REGULATOR=y
+CONFIG_SENSORS_LTC3815=m
+CONFIG_SENSORS_MAX16064=m
+CONFIG_SENSORS_MAX20751=m
+# CONFIG_SENSORS_MAX31785 is not set
+CONFIG_SENSORS_MAX34440=m
+CONFIG_SENSORS_MAX8688=m
+CONFIG_SENSORS_PXE1610=m
+CONFIG_SENSORS_TPS40422=m
+CONFIG_SENSORS_TPS53679=m
+CONFIG_SENSORS_UCD9000=m
+CONFIG_SENSORS_UCD9200=m
+CONFIG_SENSORS_ZL6100=m
+# CONFIG_SENSORS_SHT15 is not set
+# CONFIG_SENSORS_SHT21 is not set
+# CONFIG_SENSORS_SHT3x is not set
+CONFIG_SENSORS_SHTC1=m
+CONFIG_SENSORS_SIS5595=m
+CONFIG_SENSORS_DME1737=m
+CONFIG_SENSORS_EMC1403=m
+CONFIG_SENSORS_EMC2103=m
+CONFIG_SENSORS_EMC6W201=m
+CONFIG_SENSORS_SMSC47M1=m
+CONFIG_SENSORS_SMSC47M192=m
+CONFIG_SENSORS_SMSC47B397=m
+CONFIG_SENSORS_SCH56XX_COMMON=m
+CONFIG_SENSORS_SCH5627=m
+CONFIG_SENSORS_SCH5636=m
+CONFIG_SENSORS_STTS751=m
+CONFIG_SENSORS_SMM665=m
+CONFIG_SENSORS_ADC128D818=m
+# CONFIG_SENSORS_ADS7828 is not set
+CONFIG_SENSORS_ADS7871=m
+# CONFIG_SENSORS_AMC6821 is not set
+CONFIG_SENSORS_INA209=m
+# CONFIG_SENSORS_INA2XX is not set
+# CONFIG_SENSORS_INA3221 is not set
+CONFIG_SENSORS_TC74=m
+CONFIG_SENSORS_THMC50=m
+CONFIG_SENSORS_TMP102=m
+CONFIG_SENSORS_TMP103=m
+CONFIG_SENSORS_TMP108=m
+CONFIG_SENSORS_TMP401=m
+CONFIG_SENSORS_TMP421=m
+CONFIG_SENSORS_VIA_CPUTEMP=m
+CONFIG_SENSORS_VIA686A=m
+CONFIG_SENSORS_VT1211=m
+CONFIG_SENSORS_VT8231=m
+CONFIG_SENSORS_W83773G=m
+CONFIG_SENSORS_W83781D=m
+CONFIG_SENSORS_W83791D=m
+CONFIG_SENSORS_W83792D=m
+CONFIG_SENSORS_W83793=m
+CONFIG_SENSORS_W83795=m
+# CONFIG_SENSORS_W83795_FANCTRL is not set
+CONFIG_SENSORS_W83L785TS=m
+CONFIG_SENSORS_W83L786NG=m
+CONFIG_SENSORS_W83627HF=m
+CONFIG_SENSORS_W83627EHF=m
+CONFIG_SENSORS_WM831X=m
+CONFIG_SENSORS_WM8350=m
+CONFIG_SENSORS_XGENE=m
+
+#
+# ACPI drivers
+#
+CONFIG_SENSORS_ACPI_POWER=m
+CONFIG_SENSORS_ATK0110=m
+CONFIG_THERMAL=y
+# CONFIG_THERMAL_STATISTICS is not set
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
+# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
+# CONFIG_THERMAL_DEFAULT_GOV_POWER_ALLOCATOR is not set
+CONFIG_THERMAL_GOV_FAIR_SHARE=y
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_GOV_BANG_BANG=y
+CONFIG_THERMAL_GOV_USER_SPACE=y
+CONFIG_THERMAL_GOV_POWER_ALLOCATOR=y
+CONFIG_CLOCK_THERMAL=y
+CONFIG_DEVFREQ_THERMAL=y
+CONFIG_THERMAL_EMULATION=y
+
+#
+# Intel thermal drivers
+#
+CONFIG_INTEL_POWERCLAMP=m
+CONFIG_X86_PKG_TEMP_THERMAL=m
+CONFIG_INTEL_SOC_DTS_IOSF_CORE=m
+CONFIG_INTEL_SOC_DTS_THERMAL=m
+
+#
+# ACPI INT340X thermal drivers
+#
+CONFIG_INT340X_THERMAL=m
+CONFIG_ACPI_THERMAL_REL=m
+CONFIG_INT3406_THERMAL=m
+CONFIG_PROC_THERMAL_MMIO_RAPL=y
+# end of ACPI INT340X thermal drivers
+
+CONFIG_INTEL_BXT_PMIC_THERMAL=m
+CONFIG_INTEL_PCH_THERMAL=m
+# end of Intel thermal drivers
+
+CONFIG_GENERIC_ADC_THERMAL=m
+CONFIG_WATCHDOG=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_WATCHDOG_NOWAYOUT=y
+CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
+CONFIG_WATCHDOG_OPEN_TIMEOUT=0
+CONFIG_WATCHDOG_SYSFS=y
+
+#
+# Watchdog Pretimeout Governors
+#
+# CONFIG_WATCHDOG_PRETIMEOUT_GOV is not set
+
+#
+# Watchdog Device Drivers
+#
+CONFIG_SOFT_WATCHDOG=m
+CONFIG_DA9052_WATCHDOG=m
+CONFIG_DA9055_WATCHDOG=m
+CONFIG_DA9063_WATCHDOG=m
+CONFIG_DA9062_WATCHDOG=m
+CONFIG_MENF21BMC_WATCHDOG=m
+CONFIG_WDAT_WDT=m
+CONFIG_WM831X_WATCHDOG=m
+CONFIG_WM8350_WATCHDOG=m
+# CONFIG_XILINX_WATCHDOG is not set
+CONFIG_ZIIRAVE_WATCHDOG=m
+CONFIG_MLX_WDT=m
+# CONFIG_CADENCE_WATCHDOG is not set
+CONFIG_DW_WATCHDOG=m
+CONFIG_TWL4030_WATCHDOG=m
+CONFIG_MAX63XX_WATCHDOG=m
+CONFIG_RETU_WATCHDOG=m
+CONFIG_ACQUIRE_WDT=m
+CONFIG_ADVANTECH_WDT=m
+CONFIG_ALIM1535_WDT=m
+CONFIG_ALIM7101_WDT=m
+CONFIG_EBC_C384_WDT=m
+CONFIG_F71808E_WDT=m
+CONFIG_SP5100_TCO=m
+CONFIG_SBC_FITPC2_WATCHDOG=m
+CONFIG_EUROTECH_WDT=m
+CONFIG_IB700_WDT=m
+CONFIG_IBMASR=m
+CONFIG_WAFER_WDT=m
+CONFIG_I6300ESB_WDT=m
+CONFIG_IE6XX_WDT=m
+CONFIG_ITCO_WDT=m
+CONFIG_ITCO_VENDOR_SUPPORT=y
+CONFIG_IT8712F_WDT=m
+CONFIG_IT87_WDT=m
+CONFIG_HP_WATCHDOG=m
+# CONFIG_HPWDT_NMI_DECODING is not set
+CONFIG_KEMPLD_WDT=m
+CONFIG_SC1200_WDT=m
+CONFIG_PC87413_WDT=m
+CONFIG_NV_TCO=m
+CONFIG_60XX_WDT=m
+CONFIG_CPU5_WDT=m
+CONFIG_SMSC_SCH311X_WDT=m
+CONFIG_SMSC37B787_WDT=m
+# CONFIG_TQMX86_WDT is not set
+CONFIG_VIA_WDT=m
+CONFIG_W83627HF_WDT=m
+CONFIG_W83877F_WDT=m
+CONFIG_W83977F_WDT=m
+CONFIG_MACHZ_WDT=m
+CONFIG_SBC_EPX_C3_WATCHDOG=m
+CONFIG_INTEL_MEI_WDT=m
+CONFIG_NI903X_WDT=m
+CONFIG_NIC7018_WDT=m
+CONFIG_MEN_A21_WDT=m
+CONFIG_XEN_WDT=m
+
+#
+# PCI-based Watchdog Cards
+#
+CONFIG_PCIPCWATCHDOG=m
+CONFIG_WDTPCI=m
+
+#
+# USB-based Watchdog Cards
+#
+CONFIG_USBPCWATCHDOG=m
+CONFIG_SSB_POSSIBLE=y
+CONFIG_SSB=m
+CONFIG_SSB_SPROM=y
+CONFIG_SSB_BLOCKIO=y
+CONFIG_SSB_PCIHOST_POSSIBLE=y
+CONFIG_SSB_PCIHOST=y
+CONFIG_SSB_B43_PCI_BRIDGE=y
+CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
+CONFIG_SSB_PCMCIAHOST=y
+CONFIG_SSB_SDIOHOST_POSSIBLE=y
+CONFIG_SSB_SDIOHOST=y
+CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
+CONFIG_SSB_DRIVER_PCICORE=y
+CONFIG_SSB_DRIVER_GPIO=y
+CONFIG_BCMA_POSSIBLE=y
+CONFIG_BCMA=m
+CONFIG_BCMA_BLOCKIO=y
+CONFIG_BCMA_HOST_PCI_POSSIBLE=y
+CONFIG_BCMA_HOST_PCI=y
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_DRIVER_PCI=y
+CONFIG_BCMA_SFLASH=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_BCMA_DRIVER_GPIO=y
+# CONFIG_BCMA_DEBUG is not set
+
+#
+# Multifunction device drivers
+#
+CONFIG_MFD_CORE=y
+CONFIG_MFD_AS3711=y
+CONFIG_PMIC_ADP5520=y
+CONFIG_MFD_AAT2870_CORE=y
+CONFIG_MFD_BCM590XX=m
+CONFIG_MFD_BD9571MWV=m
+CONFIG_MFD_AXP20X=m
+CONFIG_MFD_AXP20X_I2C=m
+CONFIG_MFD_CROS_EC_DEV=m
+CONFIG_MFD_MADERA=m
+CONFIG_MFD_MADERA_I2C=m
+CONFIG_MFD_MADERA_SPI=m
+CONFIG_MFD_CS47L15=y
+CONFIG_MFD_CS47L35=y
+CONFIG_MFD_CS47L85=y
+CONFIG_MFD_CS47L90=y
+CONFIG_MFD_CS47L92=y
+CONFIG_PMIC_DA903X=y
+CONFIG_PMIC_DA9052=y
+CONFIG_MFD_DA9052_SPI=y
+CONFIG_MFD_DA9052_I2C=y
+CONFIG_MFD_DA9055=y
+CONFIG_MFD_DA9062=m
+CONFIG_MFD_DA9063=y
+# CONFIG_MFD_DA9150 is not set
+CONFIG_MFD_DLN2=m
+CONFIG_MFD_MC13XXX=m
+CONFIG_MFD_MC13XXX_SPI=m
+# CONFIG_MFD_MC13XXX_I2C is not set
+# CONFIG_HTC_PASIC3 is not set
+CONFIG_HTC_I2CPLD=y
+CONFIG_MFD_INTEL_QUARK_I2C_GPIO=m
+CONFIG_LPC_ICH=m
+CONFIG_LPC_SCH=m
+CONFIG_INTEL_SOC_PMIC=y
+CONFIG_INTEL_SOC_PMIC_BXTWC=m
+CONFIG_INTEL_SOC_PMIC_CHTWC=y
+CONFIG_INTEL_SOC_PMIC_CHTDC_TI=m
+CONFIG_MFD_INTEL_LPSS=m
+CONFIG_MFD_INTEL_LPSS_ACPI=m
+CONFIG_MFD_INTEL_LPSS_PCI=m
+# CONFIG_MFD_JANZ_CMODIO is not set
+CONFIG_MFD_KEMPLD=m
+CONFIG_MFD_88PM800=m
+CONFIG_MFD_88PM805=m
+CONFIG_MFD_88PM860X=y
+CONFIG_MFD_MAX14577=y
+CONFIG_MFD_MAX77693=y
+# CONFIG_MFD_MAX77843 is not set
+CONFIG_MFD_MAX8907=m
+CONFIG_MFD_MAX8925=y
+CONFIG_MFD_MAX8997=y
+CONFIG_MFD_MAX8998=y
+# CONFIG_MFD_MT6397 is not set
+CONFIG_MFD_MENF21BMC=m
+CONFIG_EZX_PCAP=y
+CONFIG_MFD_VIPERBOARD=m
+CONFIG_MFD_RETU=m
+# CONFIG_MFD_PCF50633 is not set
+# CONFIG_UCB1400_CORE is not set
+CONFIG_MFD_RDC321X=m
+# CONFIG_MFD_RT5033 is not set
+CONFIG_MFD_RC5T583=y
+CONFIG_MFD_SEC_CORE=y
+CONFIG_MFD_SI476X_CORE=m
+# CONFIG_MFD_SM501 is not set
+# CONFIG_MFD_SKY81452 is not set
+CONFIG_MFD_SMSC=y
+# CONFIG_ABX500_CORE is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MFD_TI_AM335X_TSCADC=m
+CONFIG_MFD_LP3943=m
+CONFIG_MFD_LP8788=y
+CONFIG_MFD_TI_LMU=m
+CONFIG_MFD_PALMAS=y
+# CONFIG_TPS6105X is not set
+# CONFIG_TPS65010 is not set
+# CONFIG_TPS6507X is not set
+CONFIG_MFD_TPS65086=m
+CONFIG_MFD_TPS65090=y
+CONFIG_MFD_TPS68470=y
+# CONFIG_MFD_TI_LP873X is not set
+CONFIG_MFD_TPS6586X=y
+CONFIG_MFD_TPS65910=y
+CONFIG_MFD_TPS65912=y
+CONFIG_MFD_TPS65912_I2C=y
+CONFIG_MFD_TPS65912_SPI=y
+CONFIG_MFD_TPS80031=y
+CONFIG_TWL4030_CORE=y
+CONFIG_MFD_TWL4030_AUDIO=y
+CONFIG_TWL6040_CORE=y
+CONFIG_MFD_WL1273_CORE=m
+# CONFIG_MFD_LM3533 is not set
+# CONFIG_MFD_TQMX86 is not set
+CONFIG_MFD_VX855=m
+CONFIG_MFD_ARIZONA=y
+CONFIG_MFD_ARIZONA_I2C=m
+CONFIG_MFD_ARIZONA_SPI=m
+CONFIG_MFD_CS47L24=y
+CONFIG_MFD_WM5102=y
+CONFIG_MFD_WM5110=y
+CONFIG_MFD_WM8997=y
+# CONFIG_MFD_WM8998 is not set
+CONFIG_MFD_WM8400=y
+CONFIG_MFD_WM831X=y
+CONFIG_MFD_WM831X_I2C=y
+CONFIG_MFD_WM831X_SPI=y
+CONFIG_MFD_WM8350=y
+CONFIG_MFD_WM8350_I2C=y
+CONFIG_MFD_WM8994=y
+# CONFIG_RAVE_SP_CORE is not set
+# end of Multifunction device drivers
+
+CONFIG_REGULATOR=y
+# CONFIG_REGULATOR_DEBUG is not set
+CONFIG_REGULATOR_FIXED_VOLTAGE=m
+CONFIG_REGULATOR_VIRTUAL_CONSUMER=m
+CONFIG_REGULATOR_USERSPACE_CONSUMER=m
+# CONFIG_REGULATOR_88PG86X is not set
+CONFIG_REGULATOR_88PM800=m
+CONFIG_REGULATOR_88PM8607=m
+CONFIG_REGULATOR_ACT8865=m
+CONFIG_REGULATOR_AD5398=m
+CONFIG_REGULATOR_ANATOP=m
+CONFIG_REGULATOR_AAT2870=m
+# CONFIG_REGULATOR_ARIZONA_LDO1 is not set
+# CONFIG_REGULATOR_ARIZONA_MICSUPP is not set
+CONFIG_REGULATOR_AS3711=m
+CONFIG_REGULATOR_AXP20X=m
+CONFIG_REGULATOR_BCM590XX=m
+CONFIG_REGULATOR_BD9571MWV=m
+CONFIG_REGULATOR_DA903X=m
+CONFIG_REGULATOR_DA9052=m
+CONFIG_REGULATOR_DA9055=m
+CONFIG_REGULATOR_DA9062=m
+CONFIG_REGULATOR_DA9210=m
+CONFIG_REGULATOR_DA9211=m
+CONFIG_REGULATOR_FAN53555=m
+CONFIG_REGULATOR_GPIO=m
+CONFIG_REGULATOR_ISL9305=m
+CONFIG_REGULATOR_ISL6271A=m
+# CONFIG_REGULATOR_LM363X is not set
+CONFIG_REGULATOR_LP3971=m
+CONFIG_REGULATOR_LP3972=m
+CONFIG_REGULATOR_LP872X=m
+CONFIG_REGULATOR_LP8755=m
+CONFIG_REGULATOR_LP8788=m
+CONFIG_REGULATOR_LTC3589=m
+# CONFIG_REGULATOR_LTC3676 is not set
+CONFIG_REGULATOR_MAX14577=m
+CONFIG_REGULATOR_MAX1586=m
+CONFIG_REGULATOR_MAX8649=m
+CONFIG_REGULATOR_MAX8660=m
+CONFIG_REGULATOR_MAX8907=m
+CONFIG_REGULATOR_MAX8925=m
+CONFIG_REGULATOR_MAX8952=m
+CONFIG_REGULATOR_MAX8997=m
+CONFIG_REGULATOR_MAX8998=m
+CONFIG_REGULATOR_MAX77693=m
+CONFIG_REGULATOR_MC13XXX_CORE=m
+CONFIG_REGULATOR_MC13783=m
+CONFIG_REGULATOR_MC13892=m
+CONFIG_REGULATOR_MT6311=m
+CONFIG_REGULATOR_PALMAS=m
+CONFIG_REGULATOR_PCAP=m
+CONFIG_REGULATOR_PFUZE100=m
+CONFIG_REGULATOR_PV88060=m
+CONFIG_REGULATOR_PV88080=m
+CONFIG_REGULATOR_PV88090=m
+CONFIG_REGULATOR_PWM=m
+CONFIG_REGULATOR_QCOM_SPMI=m
+CONFIG_REGULATOR_RC5T583=m
+CONFIG_REGULATOR_S2MPA01=m
+CONFIG_REGULATOR_S2MPS11=m
+CONFIG_REGULATOR_S5M8767=m
+# CONFIG_REGULATOR_SLG51000 is not set
+CONFIG_REGULATOR_TPS51632=m
+CONFIG_REGULATOR_TPS62360=m
+CONFIG_REGULATOR_TPS65023=m
+CONFIG_REGULATOR_TPS6507X=m
+CONFIG_REGULATOR_TPS65086=m
+CONFIG_REGULATOR_TPS65090=m
+# CONFIG_REGULATOR_TPS65132 is not set
+CONFIG_REGULATOR_TPS6524X=m
+CONFIG_REGULATOR_TPS6586X=m
+CONFIG_REGULATOR_TPS65910=m
+CONFIG_REGULATOR_TPS65912=m
+CONFIG_REGULATOR_TPS80031=m
+CONFIG_REGULATOR_TWL4030=m
+CONFIG_REGULATOR_WM831X=m
+CONFIG_REGULATOR_WM8350=m
+CONFIG_REGULATOR_WM8400=m
+CONFIG_REGULATOR_WM8994=m
+CONFIG_CEC_CORE=y
+CONFIG_CEC_NOTIFIER=y
+CONFIG_RC_CORE=m
+CONFIG_RC_MAP=m
+CONFIG_LIRC=y
+CONFIG_RC_DECODERS=y
+CONFIG_IR_NEC_DECODER=m
+CONFIG_IR_RC5_DECODER=m
+CONFIG_IR_RC6_DECODER=m
+CONFIG_IR_JVC_DECODER=m
+CONFIG_IR_SONY_DECODER=m
+CONFIG_IR_SANYO_DECODER=m
+CONFIG_IR_SHARP_DECODER=m
+CONFIG_IR_MCE_KBD_DECODER=m
+CONFIG_IR_XMP_DECODER=m
+CONFIG_IR_IMON_DECODER=m
+CONFIG_IR_RCMM_DECODER=m
+CONFIG_RC_DEVICES=y
+CONFIG_RC_ATI_REMOTE=m
+CONFIG_IR_ENE=m
+CONFIG_IR_IMON=m
+CONFIG_IR_IMON_RAW=m
+CONFIG_IR_MCEUSB=m
+CONFIG_IR_ITE_CIR=m
+CONFIG_IR_FINTEK=m
+CONFIG_IR_NUVOTON=m
+CONFIG_IR_REDRAT3=m
+CONFIG_IR_STREAMZAP=m
+CONFIG_IR_WINBOND_CIR=m
+CONFIG_IR_IGORPLUGUSB=m
+CONFIG_IR_IGUANA=m
+CONFIG_IR_TTUSBIR=m
+CONFIG_RC_LOOPBACK=m
+# CONFIG_IR_SERIAL is not set
+CONFIG_IR_SIR=m
+CONFIG_RC_XBOX_DVD=m
+CONFIG_MEDIA_SUPPORT=m
+
+#
+# Multimedia core support
+#
+CONFIG_MEDIA_CAMERA_SUPPORT=y
+CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
+CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
+CONFIG_MEDIA_RADIO_SUPPORT=y
+CONFIG_MEDIA_SDR_SUPPORT=y
+CONFIG_MEDIA_CEC_SUPPORT=y
+CONFIG_MEDIA_CONTROLLER=y
+CONFIG_MEDIA_CONTROLLER_DVB=y
+CONFIG_MEDIA_CONTROLLER_REQUEST_API=y
+CONFIG_VIDEO_DEV=m
+# CONFIG_VIDEO_V4L2_SUBDEV_API is not set
+CONFIG_VIDEO_V4L2=m
+CONFIG_VIDEO_V4L2_I2C=y
+# CONFIG_VIDEO_ADV_DEBUG is not set
+# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
+CONFIG_VIDEO_TUNER=m
+CONFIG_V4L2_MEM2MEM_DEV=m
+CONFIG_V4L2_FWNODE=m
+CONFIG_VIDEOBUF_GEN=m
+CONFIG_VIDEOBUF_DMA_SG=m
+CONFIG_VIDEOBUF_VMALLOC=m
+CONFIG_DVB_CORE=m
+# CONFIG_DVB_MMAP is not set
+CONFIG_DVB_NET=y
+CONFIG_TTPCI_EEPROM=m
+CONFIG_DVB_MAX_ADAPTERS=8
+# CONFIG_DVB_DYNAMIC_MINORS is not set
+# CONFIG_DVB_DEMUX_SECTION_LOSS_LOG is not set
+# CONFIG_DVB_ULE_DEBUG is not set
+
+#
+# Media drivers
+#
+CONFIG_MEDIA_USB_SUPPORT=y
+
+#
+# Webcam devices
+#
+CONFIG_USB_VIDEO_CLASS=m
+CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
+CONFIG_USB_GSPCA=m
+CONFIG_USB_M5602=m
+CONFIG_USB_STV06XX=m
+CONFIG_USB_GL860=m
+CONFIG_USB_GSPCA_BENQ=m
+CONFIG_USB_GSPCA_CONEX=m
+CONFIG_USB_GSPCA_CPIA1=m
+CONFIG_USB_GSPCA_DTCS033=m
+CONFIG_USB_GSPCA_ETOMS=m
+CONFIG_USB_GSPCA_FINEPIX=m
+CONFIG_USB_GSPCA_JEILINJ=m
+CONFIG_USB_GSPCA_JL2005BCD=m
+CONFIG_USB_GSPCA_KINECT=m
+CONFIG_USB_GSPCA_KONICA=m
+CONFIG_USB_GSPCA_MARS=m
+CONFIG_USB_GSPCA_MR97310A=m
+CONFIG_USB_GSPCA_NW80X=m
+CONFIG_USB_GSPCA_OV519=m
+CONFIG_USB_GSPCA_OV534=m
+CONFIG_USB_GSPCA_OV534_9=m
+CONFIG_USB_GSPCA_PAC207=m
+CONFIG_USB_GSPCA_PAC7302=m
+CONFIG_USB_GSPCA_PAC7311=m
+CONFIG_USB_GSPCA_SE401=m
+CONFIG_USB_GSPCA_SN9C2028=m
+CONFIG_USB_GSPCA_SN9C20X=m
+CONFIG_USB_GSPCA_SONIXB=m
+CONFIG_USB_GSPCA_SONIXJ=m
+CONFIG_USB_GSPCA_SPCA500=m
+CONFIG_USB_GSPCA_SPCA501=m
+CONFIG_USB_GSPCA_SPCA505=m
+CONFIG_USB_GSPCA_SPCA506=m
+CONFIG_USB_GSPCA_SPCA508=m
+CONFIG_USB_GSPCA_SPCA561=m
+CONFIG_USB_GSPCA_SPCA1528=m
+CONFIG_USB_GSPCA_SQ905=m
+CONFIG_USB_GSPCA_SQ905C=m
+CONFIG_USB_GSPCA_SQ930X=m
+CONFIG_USB_GSPCA_STK014=m
+CONFIG_USB_GSPCA_STK1135=m
+CONFIG_USB_GSPCA_STV0680=m
+CONFIG_USB_GSPCA_SUNPLUS=m
+CONFIG_USB_GSPCA_T613=m
+CONFIG_USB_GSPCA_TOPRO=m
+CONFIG_USB_GSPCA_TOUPTEK=m
+CONFIG_USB_GSPCA_TV8532=m
+CONFIG_USB_GSPCA_VC032X=m
+CONFIG_USB_GSPCA_VICAM=m
+CONFIG_USB_GSPCA_XIRLINK_CIT=m
+CONFIG_USB_GSPCA_ZC3XX=m
+CONFIG_USB_PWC=m
+# CONFIG_USB_PWC_DEBUG is not set
+CONFIG_USB_PWC_INPUT_EVDEV=y
+CONFIG_VIDEO_CPIA2=m
+CONFIG_USB_ZR364XX=m
+CONFIG_USB_STKWEBCAM=m
+CONFIG_USB_S2255=m
+CONFIG_VIDEO_USBTV=m
+
+#
+# Analog TV USB devices
+#
+CONFIG_VIDEO_PVRUSB2=m
+CONFIG_VIDEO_PVRUSB2_SYSFS=y
+CONFIG_VIDEO_PVRUSB2_DVB=y
+# CONFIG_VIDEO_PVRUSB2_DEBUGIFC is not set
+CONFIG_VIDEO_HDPVR=m
+CONFIG_VIDEO_USBVISION=m
+CONFIG_VIDEO_STK1160_COMMON=m
+CONFIG_VIDEO_STK1160=m
+CONFIG_VIDEO_GO7007=m
+CONFIG_VIDEO_GO7007_USB=m
+CONFIG_VIDEO_GO7007_LOADER=m
+CONFIG_VIDEO_GO7007_USB_S2250_BOARD=m
+
+#
+# Analog/digital TV USB devices
+#
+CONFIG_VIDEO_AU0828=m
+CONFIG_VIDEO_AU0828_V4L2=y
+CONFIG_VIDEO_AU0828_RC=y
+CONFIG_VIDEO_CX231XX=m
+CONFIG_VIDEO_CX231XX_RC=y
+CONFIG_VIDEO_CX231XX_ALSA=m
+CONFIG_VIDEO_CX231XX_DVB=m
+CONFIG_VIDEO_TM6000=m
+CONFIG_VIDEO_TM6000_ALSA=m
+CONFIG_VIDEO_TM6000_DVB=m
+
+#
+# Digital TV USB devices
+#
+CONFIG_DVB_USB=m
+# CONFIG_DVB_USB_DEBUG is not set
+CONFIG_DVB_USB_DIB3000MC=m
+CONFIG_DVB_USB_A800=m
+CONFIG_DVB_USB_DIBUSB_MB=m
+# CONFIG_DVB_USB_DIBUSB_MB_FAULTY is not set
+CONFIG_DVB_USB_DIBUSB_MC=m
+CONFIG_DVB_USB_DIB0700=m
+CONFIG_DVB_USB_UMT_010=m
+CONFIG_DVB_USB_CXUSB=m
+# CONFIG_DVB_USB_CXUSB_ANALOG is not set
+CONFIG_DVB_USB_M920X=m
+CONFIG_DVB_USB_DIGITV=m
+CONFIG_DVB_USB_VP7045=m
+CONFIG_DVB_USB_VP702X=m
+CONFIG_DVB_USB_GP8PSK=m
+CONFIG_DVB_USB_NOVA_T_USB2=m
+CONFIG_DVB_USB_TTUSB2=m
+CONFIG_DVB_USB_DTT200U=m
+CONFIG_DVB_USB_OPERA1=m
+CONFIG_DVB_USB_AF9005=m
+CONFIG_DVB_USB_AF9005_REMOTE=m
+CONFIG_DVB_USB_PCTV452E=m
+CONFIG_DVB_USB_DW2102=m
+CONFIG_DVB_USB_CINERGY_T2=m
+CONFIG_DVB_USB_DTV5100=m
+CONFIG_DVB_USB_AZ6027=m
+CONFIG_DVB_USB_TECHNISAT_USB2=m
+CONFIG_DVB_USB_V2=m
+CONFIG_DVB_USB_AF9015=m
+CONFIG_DVB_USB_AF9035=m
+CONFIG_DVB_USB_ANYSEE=m
+CONFIG_DVB_USB_AU6610=m
+CONFIG_DVB_USB_AZ6007=m
+CONFIG_DVB_USB_CE6230=m
+CONFIG_DVB_USB_EC168=m
+CONFIG_DVB_USB_GL861=m
+CONFIG_DVB_USB_LME2510=m
+CONFIG_DVB_USB_MXL111SF=m
+CONFIG_DVB_USB_RTL28XXU=m
+CONFIG_DVB_USB_DVBSKY=m
+CONFIG_DVB_USB_ZD1301=m
+CONFIG_DVB_TTUSB_BUDGET=m
+# CONFIG_DVB_TTUSB_DEC is not set
+CONFIG_SMS_USB_DRV=m
+CONFIG_DVB_B2C2_FLEXCOP_USB=m
+# CONFIG_DVB_B2C2_FLEXCOP_USB_DEBUG is not set
+CONFIG_DVB_AS102=m
+
+#
+# Webcam, TV (analog/digital) USB devices
+#
+CONFIG_VIDEO_EM28XX=m
+CONFIG_VIDEO_EM28XX_V4L2=m
+CONFIG_VIDEO_EM28XX_ALSA=m
+CONFIG_VIDEO_EM28XX_DVB=m
+CONFIG_VIDEO_EM28XX_RC=m
+
+#
+# Software defined radio USB devices
+#
+CONFIG_USB_AIRSPY=m
+CONFIG_USB_HACKRF=m
+CONFIG_USB_MSI2500=m
+
+#
+# USB HDMI CEC adapters
+#
+CONFIG_USB_PULSE8_CEC=m
+CONFIG_USB_RAINSHADOW_CEC=m
+CONFIG_MEDIA_PCI_SUPPORT=y
+
+#
+# Media capture support
+#
+CONFIG_VIDEO_MEYE=m
+CONFIG_VIDEO_SOLO6X10=m
+CONFIG_VIDEO_TW5864=m
+CONFIG_VIDEO_TW68=m
+CONFIG_VIDEO_TW686X=m
+
+#
+# Media capture/analog TV support
+#
+CONFIG_VIDEO_IVTV=m
+# CONFIG_VIDEO_IVTV_DEPRECATED_IOCTLS is not set
+CONFIG_VIDEO_IVTV_ALSA=m
+CONFIG_VIDEO_FB_IVTV=m
+# CONFIG_VIDEO_FB_IVTV_FORCE_PAT is not set
+CONFIG_VIDEO_HEXIUM_GEMINI=m
+CONFIG_VIDEO_HEXIUM_ORION=m
+CONFIG_VIDEO_MXB=m
+CONFIG_VIDEO_DT3155=m
+
+#
+# Media capture/analog/hybrid TV support
+#
+CONFIG_VIDEO_CX18=m
+CONFIG_VIDEO_CX18_ALSA=m
+CONFIG_VIDEO_CX23885=m
+CONFIG_MEDIA_ALTERA_CI=m
+CONFIG_VIDEO_CX25821=m
+CONFIG_VIDEO_CX25821_ALSA=m
+CONFIG_VIDEO_CX88=m
+CONFIG_VIDEO_CX88_ALSA=m
+CONFIG_VIDEO_CX88_BLACKBIRD=m
+CONFIG_VIDEO_CX88_DVB=m
+CONFIG_VIDEO_CX88_ENABLE_VP3054=y
+CONFIG_VIDEO_CX88_VP3054=m
+CONFIG_VIDEO_CX88_MPEG=m
+CONFIG_VIDEO_BT848=m
+CONFIG_DVB_BT8XX=m
+CONFIG_VIDEO_SAA7134=m
+CONFIG_VIDEO_SAA7134_ALSA=m
+CONFIG_VIDEO_SAA7134_RC=y
+CONFIG_VIDEO_SAA7134_DVB=m
+CONFIG_VIDEO_SAA7134_GO7007=m
+CONFIG_VIDEO_SAA7164=m
+
+#
+# Media digital TV PCI Adapters
+#
+CONFIG_DVB_AV7110_IR=y
+CONFIG_DVB_AV7110=m
+CONFIG_DVB_AV7110_OSD=y
+CONFIG_DVB_BUDGET_CORE=m
+CONFIG_DVB_BUDGET=m
+CONFIG_DVB_BUDGET_CI=m
+CONFIG_DVB_BUDGET_AV=m
+CONFIG_DVB_BUDGET_PATCH=m
+CONFIG_DVB_B2C2_FLEXCOP_PCI=m
+# CONFIG_DVB_B2C2_FLEXCOP_PCI_DEBUG is not set
+CONFIG_DVB_PLUTO2=m
+CONFIG_DVB_DM1105=m
+CONFIG_DVB_PT1=m
+CONFIG_DVB_PT3=m
+CONFIG_MANTIS_CORE=m
+CONFIG_DVB_MANTIS=m
+CONFIG_DVB_HOPPER=m
+CONFIG_DVB_NGENE=m
+CONFIG_DVB_DDBRIDGE=m
+# CONFIG_DVB_DDBRIDGE_MSIENABLE is not set
+CONFIG_DVB_SMIPCIE=m
+CONFIG_DVB_NETUP_UNIDVB=m
+CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_VIDEO_CAFE_CCIC=m
+CONFIG_VIDEO_VIA_CAMERA=m
+CONFIG_VIDEO_CADENCE=y
+CONFIG_VIDEO_ASPEED=m
+CONFIG_V4L_MEM2MEM_DRIVERS=y
+CONFIG_VIDEO_MEM2MEM_DEINTERLACE=m
+CONFIG_VIDEO_SH_VEU=m
+CONFIG_V4L_TEST_DRIVERS=y
+CONFIG_VIDEO_VIVID=m
+# CONFIG_VIDEO_VIVID_CEC is not set
+CONFIG_VIDEO_VIVID_MAX_DEVS=64
+CONFIG_VIDEO_VIM2M=m
+CONFIG_VIDEO_VICODEC=m
+CONFIG_DVB_PLATFORM_DRIVERS=y
+CONFIG_CEC_PLATFORM_DRIVERS=y
+CONFIG_VIDEO_CROS_EC_CEC=m
+# CONFIG_VIDEO_SECO_CEC is not set
+# CONFIG_SDR_PLATFORM_DRIVERS is not set
+
+#
+# Supported MMC/SDIO adapters
+#
+CONFIG_SMS_SDIO_DRV=m
+CONFIG_RADIO_ADAPTERS=y
+CONFIG_RADIO_TEA575X=m
+CONFIG_RADIO_SI470X=m
+CONFIG_USB_SI470X=m
+# CONFIG_I2C_SI470X is not set
+# CONFIG_RADIO_SI4713 is not set
+# CONFIG_RADIO_SI476X is not set
+CONFIG_USB_MR800=m
+CONFIG_USB_DSBR=m
+CONFIG_RADIO_MAXIRADIO=m
+CONFIG_RADIO_SHARK=m
+CONFIG_RADIO_SHARK2=m
+CONFIG_USB_KEENE=m
+CONFIG_USB_RAREMONO=m
+CONFIG_USB_MA901=m
+CONFIG_RADIO_TEA5764=m
+CONFIG_RADIO_SAA7706H=m
+CONFIG_RADIO_TEF6862=m
+CONFIG_RADIO_WL1273=m
+
+#
+# Texas Instruments WL128x FM driver (ST based)
+#
+CONFIG_RADIO_WL128X=m
+# end of Texas Instruments WL128x FM driver (ST based)
+
+#
+# Supported FireWire (IEEE 1394) Adapters
+#
+CONFIG_DVB_FIREDTV=m
+CONFIG_DVB_FIREDTV_INPUT=y
+CONFIG_MEDIA_COMMON_OPTIONS=y
+
+#
+# common driver options
+#
+CONFIG_VIDEO_CX2341X=m
+CONFIG_VIDEO_TVEEPROM=m
+CONFIG_CYPRESS_FIRMWARE=m
+CONFIG_VIDEOBUF2_CORE=m
+CONFIG_VIDEOBUF2_V4L2=m
+CONFIG_VIDEOBUF2_MEMOPS=m
+CONFIG_VIDEOBUF2_DMA_CONTIG=m
+CONFIG_VIDEOBUF2_VMALLOC=m
+CONFIG_VIDEOBUF2_DMA_SG=m
+CONFIG_VIDEOBUF2_DVB=m
+CONFIG_DVB_B2C2_FLEXCOP=m
+CONFIG_VIDEO_SAA7146=m
+CONFIG_VIDEO_SAA7146_VV=m
+CONFIG_SMS_SIANO_MDTV=m
+CONFIG_SMS_SIANO_RC=y
+# CONFIG_SMS_SIANO_DEBUGFS is not set
+CONFIG_VIDEO_V4L2_TPG=m
+
+#
+# Media ancillary drivers (tuners, sensors, i2c, spi, frontends)
+#
+CONFIG_MEDIA_SUBDRV_AUTOSELECT=y
+CONFIG_MEDIA_ATTACH=y
+CONFIG_VIDEO_IR_I2C=m
+
+#
+# I2C Encoders, decoders, sensors and other helper chips
+#
+
+#
+# Audio decoders, processors and mixers
+#
+CONFIG_VIDEO_TVAUDIO=m
+CONFIG_VIDEO_TDA7432=m
+CONFIG_VIDEO_TDA9840=m
+CONFIG_VIDEO_TEA6415C=m
+CONFIG_VIDEO_TEA6420=m
+CONFIG_VIDEO_MSP3400=m
+CONFIG_VIDEO_CS3308=m
+CONFIG_VIDEO_CS5345=m
+CONFIG_VIDEO_CS53L32A=m
+CONFIG_VIDEO_TLV320AIC23B=m
+CONFIG_VIDEO_UDA1342=m
+CONFIG_VIDEO_WM8775=m
+CONFIG_VIDEO_WM8739=m
+CONFIG_VIDEO_VP27SMPX=m
+CONFIG_VIDEO_SONY_BTF_MPX=m
+
+#
+# RDS decoders
+#
+CONFIG_VIDEO_SAA6588=m
+
+#
+# Video decoders
+#
+CONFIG_VIDEO_ADV7183=m
+CONFIG_VIDEO_BT819=m
+CONFIG_VIDEO_BT856=m
+CONFIG_VIDEO_BT866=m
+CONFIG_VIDEO_KS0127=m
+CONFIG_VIDEO_ML86V7667=m
+CONFIG_VIDEO_SAA7110=m
+CONFIG_VIDEO_SAA711X=m
+CONFIG_VIDEO_TVP514X=m
+CONFIG_VIDEO_TVP5150=m
+CONFIG_VIDEO_TVP7002=m
+CONFIG_VIDEO_TW2804=m
+CONFIG_VIDEO_TW9903=m
+CONFIG_VIDEO_TW9906=m
+CONFIG_VIDEO_TW9910=m
+CONFIG_VIDEO_VPX3220=m
+
+#
+# Video and audio decoders
+#
+CONFIG_VIDEO_SAA717X=m
+CONFIG_VIDEO_CX25840=m
+
+#
+# Video encoders
+#
+CONFIG_VIDEO_SAA7127=m
+CONFIG_VIDEO_SAA7185=m
+CONFIG_VIDEO_ADV7170=m
+CONFIG_VIDEO_ADV7175=m
+CONFIG_VIDEO_ADV7343=m
+CONFIG_VIDEO_ADV7393=m
+CONFIG_VIDEO_AK881X=m
+CONFIG_VIDEO_THS8200=m
+
+#
+# Camera sensor devices
+#
+CONFIG_VIDEO_OV2640=m
+CONFIG_VIDEO_OV2659=m
+CONFIG_VIDEO_OV2680=m
+CONFIG_VIDEO_OV2685=m
+CONFIG_VIDEO_OV6650=m
+CONFIG_VIDEO_OV5695=m
+CONFIG_VIDEO_OV772X=m
+CONFIG_VIDEO_OV7640=m
+CONFIG_VIDEO_OV7670=m
+CONFIG_VIDEO_OV7740=m
+CONFIG_VIDEO_OV9640=m
+CONFIG_VIDEO_VS6624=m
+CONFIG_VIDEO_MT9M111=m
+CONFIG_VIDEO_MT9T112=m
+CONFIG_VIDEO_MT9V011=m
+CONFIG_VIDEO_MT9V111=m
+CONFIG_VIDEO_SR030PC30=m
+CONFIG_VIDEO_RJ54N1=m
+
+#
+# Lens drivers
+#
+# CONFIG_VIDEO_AD5820 is not set
+
+#
+# Flash devices
+#
+# CONFIG_VIDEO_ADP1653 is not set
+# CONFIG_VIDEO_LM3560 is not set
+# CONFIG_VIDEO_LM3646 is not set
+
+#
+# Video improvement chips
+#
+CONFIG_VIDEO_UPD64031A=m
+CONFIG_VIDEO_UPD64083=m
+
+#
+# Audio/Video compression chips
+#
+CONFIG_VIDEO_SAA6752HS=m
+
+#
+# SDR tuner chips
+#
+CONFIG_SDR_MAX2175=m
+
+#
+# Miscellaneous helper chips
+#
+CONFIG_VIDEO_THS7303=m
+CONFIG_VIDEO_M52790=m
+CONFIG_VIDEO_I2C=m
+# end of I2C Encoders, decoders, sensors and other helper chips
+
+#
+# SPI helper chips
+#
+# end of SPI helper chips
+
+#
+# Media SPI Adapters
+#
+# CONFIG_CXD2880_SPI_DRV is not set
+# end of Media SPI Adapters
+
+CONFIG_MEDIA_TUNER=m
+
+#
+# Customize TV tuners
+#
+CONFIG_MEDIA_TUNER_SIMPLE=m
+CONFIG_MEDIA_TUNER_TDA18250=m
+CONFIG_MEDIA_TUNER_TDA8290=m
+CONFIG_MEDIA_TUNER_TDA827X=m
+CONFIG_MEDIA_TUNER_TDA18271=m
+CONFIG_MEDIA_TUNER_TDA9887=m
+CONFIG_MEDIA_TUNER_TEA5761=m
+CONFIG_MEDIA_TUNER_TEA5767=m
+CONFIG_MEDIA_TUNER_MSI001=m
+CONFIG_MEDIA_TUNER_MT20XX=m
+CONFIG_MEDIA_TUNER_MT2060=m
+CONFIG_MEDIA_TUNER_MT2063=m
+CONFIG_MEDIA_TUNER_MT2266=m
+CONFIG_MEDIA_TUNER_MT2131=m
+CONFIG_MEDIA_TUNER_QT1010=m
+CONFIG_MEDIA_TUNER_XC2028=m
+CONFIG_MEDIA_TUNER_XC5000=m
+CONFIG_MEDIA_TUNER_XC4000=m
+CONFIG_MEDIA_TUNER_MXL5005S=m
+CONFIG_MEDIA_TUNER_MXL5007T=m
+CONFIG_MEDIA_TUNER_MC44S803=m
+CONFIG_MEDIA_TUNER_MAX2165=m
+CONFIG_MEDIA_TUNER_TDA18218=m
+CONFIG_MEDIA_TUNER_FC0011=m
+CONFIG_MEDIA_TUNER_FC0012=m
+CONFIG_MEDIA_TUNER_FC0013=m
+CONFIG_MEDIA_TUNER_TDA18212=m
+CONFIG_MEDIA_TUNER_E4000=m
+CONFIG_MEDIA_TUNER_FC2580=m
+CONFIG_MEDIA_TUNER_M88RS6000T=m
+CONFIG_MEDIA_TUNER_TUA9001=m
+CONFIG_MEDIA_TUNER_SI2157=m
+CONFIG_MEDIA_TUNER_IT913X=m
+CONFIG_MEDIA_TUNER_R820T=m
+CONFIG_MEDIA_TUNER_MXL301RF=m
+CONFIG_MEDIA_TUNER_QM1D1C0042=m
+CONFIG_MEDIA_TUNER_QM1D1B0004=m
+# end of Customize TV tuners
+
+#
+# Customise DVB Frontends
+#
+
+#
+# Multistandard (satellite) frontends
+#
+CONFIG_DVB_STB0899=m
+CONFIG_DVB_STB6100=m
+CONFIG_DVB_STV090x=m
+CONFIG_DVB_STV0910=m
+CONFIG_DVB_STV6110x=m
+CONFIG_DVB_STV6111=m
+CONFIG_DVB_MXL5XX=m
+CONFIG_DVB_M88DS3103=m
+
+#
+# Multistandard (cable + terrestrial) frontends
+#
+CONFIG_DVB_DRXK=m
+CONFIG_DVB_TDA18271C2DD=m
+CONFIG_DVB_SI2165=m
+CONFIG_DVB_MN88472=m
+CONFIG_DVB_MN88473=m
+
+#
+# DVB-S (satellite) frontends
+#
+CONFIG_DVB_CX24110=m
+CONFIG_DVB_CX24123=m
+CONFIG_DVB_MT312=m
+CONFIG_DVB_ZL10036=m
+CONFIG_DVB_ZL10039=m
+CONFIG_DVB_S5H1420=m
+CONFIG_DVB_STV0288=m
+CONFIG_DVB_STB6000=m
+CONFIG_DVB_STV0299=m
+CONFIG_DVB_STV6110=m
+CONFIG_DVB_STV0900=m
+CONFIG_DVB_TDA8083=m
+CONFIG_DVB_TDA10086=m
+CONFIG_DVB_TDA8261=m
+CONFIG_DVB_VES1X93=m
+CONFIG_DVB_TUNER_ITD1000=m
+CONFIG_DVB_TUNER_CX24113=m
+CONFIG_DVB_TDA826X=m
+CONFIG_DVB_TUA6100=m
+CONFIG_DVB_CX24116=m
+CONFIG_DVB_CX24117=m
+CONFIG_DVB_CX24120=m
+CONFIG_DVB_SI21XX=m
+CONFIG_DVB_TS2020=m
+CONFIG_DVB_DS3000=m
+CONFIG_DVB_MB86A16=m
+CONFIG_DVB_TDA10071=m
+
+#
+# DVB-T (terrestrial) frontends
+#
+CONFIG_DVB_SP8870=m
+CONFIG_DVB_SP887X=m
+CONFIG_DVB_CX22700=m
+CONFIG_DVB_CX22702=m
+CONFIG_DVB_S5H1432=m
+CONFIG_DVB_DRXD=m
+CONFIG_DVB_L64781=m
+CONFIG_DVB_TDA1004X=m
+CONFIG_DVB_NXT6000=m
+CONFIG_DVB_MT352=m
+CONFIG_DVB_ZL10353=m
+CONFIG_DVB_DIB3000MB=m
+CONFIG_DVB_DIB3000MC=m
+CONFIG_DVB_DIB7000M=m
+CONFIG_DVB_DIB7000P=m
+CONFIG_DVB_DIB9000=m
+CONFIG_DVB_TDA10048=m
+CONFIG_DVB_AF9013=m
+CONFIG_DVB_EC100=m
+CONFIG_DVB_STV0367=m
+CONFIG_DVB_CXD2820R=m
+CONFIG_DVB_CXD2841ER=m
+CONFIG_DVB_RTL2830=m
+CONFIG_DVB_RTL2832=m
+CONFIG_DVB_RTL2832_SDR=m
+CONFIG_DVB_SI2168=m
+CONFIG_DVB_AS102_FE=m
+CONFIG_DVB_ZD1301_DEMOD=m
+CONFIG_DVB_GP8PSK_FE=m
+CONFIG_DVB_CXD2880=m
+
+#
+# DVB-C (cable) frontends
+#
+CONFIG_DVB_VES1820=m
+CONFIG_DVB_TDA10021=m
+CONFIG_DVB_TDA10023=m
+CONFIG_DVB_STV0297=m
+
+#
+# ATSC (North American/Korean Terrestrial/Cable DTV) frontends
+#
+CONFIG_DVB_NXT200X=m
+CONFIG_DVB_OR51211=m
+CONFIG_DVB_OR51132=m
+CONFIG_DVB_BCM3510=m
+CONFIG_DVB_LGDT330X=m
+CONFIG_DVB_LGDT3305=m
+CONFIG_DVB_LGDT3306A=m
+CONFIG_DVB_LG2160=m
+CONFIG_DVB_S5H1409=m
+CONFIG_DVB_AU8522=m
+CONFIG_DVB_AU8522_DTV=m
+CONFIG_DVB_AU8522_V4L=m
+CONFIG_DVB_S5H1411=m
+
+#
+# ISDB-T (terrestrial) frontends
+#
+CONFIG_DVB_S921=m
+CONFIG_DVB_DIB8000=m
+CONFIG_DVB_MB86A20S=m
+
+#
+# ISDB-S (satellite) & ISDB-T (terrestrial) frontends
+#
+CONFIG_DVB_TC90522=m
+CONFIG_DVB_MN88443X=m
+
+#
+# Digital terrestrial only tuners/PLL
+#
+CONFIG_DVB_PLL=m
+CONFIG_DVB_TUNER_DIB0070=m
+CONFIG_DVB_TUNER_DIB0090=m
+
+#
+# SEC control devices for DVB-S
+#
+CONFIG_DVB_DRX39XYJ=m
+CONFIG_DVB_LNBH25=m
+# CONFIG_DVB_LNBH29 is not set
+CONFIG_DVB_LNBP21=m
+CONFIG_DVB_LNBP22=m
+CONFIG_DVB_ISL6405=m
+CONFIG_DVB_ISL6421=m
+CONFIG_DVB_ISL6423=m
+CONFIG_DVB_A8293=m
+CONFIG_DVB_LGS8GL5=m
+CONFIG_DVB_LGS8GXX=m
+CONFIG_DVB_ATBM8830=m
+CONFIG_DVB_TDA665x=m
+CONFIG_DVB_IX2505V=m
+CONFIG_DVB_M88RS2000=m
+CONFIG_DVB_AF9033=m
+CONFIG_DVB_HORUS3A=m
+CONFIG_DVB_ASCOT2E=m
+CONFIG_DVB_HELENE=m
+
+#
+# Common Interface (EN50221) controller drivers
+#
+CONFIG_DVB_CXD2099=m
+CONFIG_DVB_SP2=m
+
+#
+# Tools to develop new frontends
+#
+CONFIG_DVB_DUMMY_FE=m
+# end of Customise DVB Frontends
+
+#
+# Graphics support
+#
+CONFIG_AGP=y
+CONFIG_AGP_AMD64=y
+CONFIG_AGP_INTEL=y
+CONFIG_AGP_SIS=y
+CONFIG_AGP_VIA=y
+CONFIG_INTEL_GTT=y
+CONFIG_VGA_ARB=y
+CONFIG_VGA_ARB_MAX_GPUS=16
+CONFIG_VGA_SWITCHEROO=y
+CONFIG_DRM=m
+CONFIG_DRM_MIPI_DSI=y
+# CONFIG_DRM_DP_AUX_CHARDEV is not set
+# CONFIG_DRM_DEBUG_SELFTEST is not set
+CONFIG_DRM_KMS_HELPER=m
+CONFIG_DRM_KMS_FB_HELPER=y
+CONFIG_DRM_FBDEV_EMULATION=y
+CONFIG_DRM_FBDEV_OVERALLOC=100
+# CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM is not set
+# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set
+CONFIG_DRM_DP_CEC=y
+CONFIG_DRM_TTM=m
+CONFIG_DRM_VRAM_HELPER=m
+CONFIG_DRM_GEM_SHMEM_HELPER=y
+CONFIG_DRM_VM=y
+CONFIG_DRM_SCHED=m
+
+#
+# I2C encoder or helper chips
+#
+CONFIG_DRM_I2C_CH7006=m
+CONFIG_DRM_I2C_SIL164=m
+CONFIG_DRM_I2C_NXP_TDA998X=m
+CONFIG_DRM_I2C_NXP_TDA9950=m
+# end of I2C encoder or helper chips
+
+#
+# ARM devices
+#
+# end of ARM devices
+
+CONFIG_DRM_RADEON=m
+CONFIG_DRM_RADEON_USERPTR=y
+CONFIG_DRM_AMDGPU=m
+CONFIG_DRM_AMDGPU_SI=y
+CONFIG_DRM_AMDGPU_CIK=y
+CONFIG_DRM_AMDGPU_USERPTR=y
+# CONFIG_DRM_AMDGPU_GART_DEBUGFS is not set
+
+#
+# ACP (Audio CoProcessor) Configuration
+#
+CONFIG_DRM_AMD_ACP=y
+# end of ACP (Audio CoProcessor) Configuration
+
+#
+# Display Engine Configuration
+#
+CONFIG_DRM_AMD_DC=y
+CONFIG_DRM_AMD_DC_DCN1_0=y
+CONFIG_DRM_AMD_DC_DCN2_0=y
+CONFIG_DRM_AMD_DC_DCN2_1=y
+CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
+# CONFIG_DEBUG_KERNEL_DC is not set
+# end of Display Engine Configuration
+
+CONFIG_HSA_AMD=y
+CONFIG_DRM_NOUVEAU=m
+# CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT is not set
+CONFIG_NOUVEAU_DEBUG=5
+CONFIG_NOUVEAU_DEBUG_DEFAULT=3
+# CONFIG_NOUVEAU_DEBUG_MMU is not set
+CONFIG_DRM_NOUVEAU_BACKLIGHT=y
+CONFIG_DRM_I915=m
+CONFIG_DRM_I915_ALPHA_SUPPORT=y
+CONFIG_DRM_I915_FORCE_PROBE="*"
+CONFIG_DRM_I915_CAPTURE_ERROR=y
+CONFIG_DRM_I915_COMPRESS_ERROR=y
+CONFIG_DRM_I915_USERPTR=y
+# CONFIG_DRM_I915_GVT is not set
+
+#
+# drm/i915 Debugging
+#
+# CONFIG_DRM_I915_WERROR is not set
+# CONFIG_DRM_I915_DEBUG is not set
+# CONFIG_DRM_I915_DEBUG_MMIO is not set
+# CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set
+# CONFIG_DRM_I915_SW_FENCE_CHECK_DAG is not set
+# CONFIG_DRM_I915_DEBUG_GUC is not set
+# CONFIG_DRM_I915_SELFTEST is not set
+# CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS is not set
+# CONFIG_DRM_I915_DEBUG_VBLANK_EVADE is not set
+# CONFIG_DRM_I915_DEBUG_RUNTIME_PM is not set
+# end of drm/i915 Debugging
+
+#
+# drm/i915 Profile Guided Optimisation
+#
+CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND=250
+CONFIG_DRM_I915_SPIN_REQUEST=5
+# end of drm/i915 Profile Guided Optimisation
+
+CONFIG_DRM_VGEM=m
+# CONFIG_DRM_VKMS is not set
+CONFIG_DRM_ATI_PCIGART=y
+CONFIG_DRM_VMWGFX=m
+# CONFIG_DRM_VMWGFX_FBCON is not set
+CONFIG_DRM_GMA500=m
+CONFIG_DRM_GMA600=y
+CONFIG_DRM_GMA3600=y
+CONFIG_DRM_UDL=m
+CONFIG_DRM_AST=m
+CONFIG_DRM_MGAG200=m
+CONFIG_DRM_CIRRUS_QEMU=m
+CONFIG_DRM_QXL=m
+CONFIG_DRM_BOCHS=m
+CONFIG_DRM_VIRTIO_GPU=m
+CONFIG_DRM_PANEL=y
+
+#
+# Display Panels
+#
+# CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN is not set
+# end of Display Panels
+
+CONFIG_DRM_BRIDGE=y
+CONFIG_DRM_PANEL_BRIDGE=y
+
+#
+# Display Interface Bridges
+#
+# CONFIG_DRM_ANALOGIX_ANX78XX is not set
+# end of Display Interface Bridges
+
+# CONFIG_DRM_ETNAVIV is not set
+CONFIG_DRM_GM12U320=m
+# CONFIG_TINYDRM_HX8357D is not set
+# CONFIG_TINYDRM_ILI9225 is not set
+# CONFIG_TINYDRM_ILI9341 is not set
+# CONFIG_TINYDRM_MI0283QT is not set
+# CONFIG_TINYDRM_REPAPER is not set
+# CONFIG_TINYDRM_ST7586 is not set
+# CONFIG_TINYDRM_ST7735R is not set
+CONFIG_DRM_XEN=y
+CONFIG_DRM_XEN_FRONTEND=m
+CONFIG_DRM_VBOXVIDEO=m
+CONFIG_DRM_LEGACY=y
+CONFIG_DRM_TDFX=m
+CONFIG_DRM_R128=m
+CONFIG_DRM_I810=m
+CONFIG_DRM_MGA=m
+CONFIG_DRM_SIS=m
+# CONFIG_DRM_VIA is not set
+CONFIG_DRM_SAVAGE=m
+CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
+
+#
+# Frame buffer Devices
+#
+CONFIG_FB_CMDLINE=y
+CONFIG_FB_NOTIFY=y
+CONFIG_FB=y
+# CONFIG_FIRMWARE_EDID is not set
+CONFIG_FB_DDC=m
+CONFIG_FB_BOOT_VESA_SUPPORT=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_SYS_FILLRECT=y
+CONFIG_FB_SYS_COPYAREA=y
+CONFIG_FB_SYS_IMAGEBLIT=y
+CONFIG_FB_FOREIGN_ENDIAN=y
+CONFIG_FB_BOTH_ENDIAN=y
+# CONFIG_FB_BIG_ENDIAN is not set
+# CONFIG_FB_LITTLE_ENDIAN is not set
+CONFIG_FB_SYS_FOPS=y
+CONFIG_FB_DEFERRED_IO=y
+CONFIG_FB_SVGALIB=m
+CONFIG_FB_BACKLIGHT=m
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_TILEBLITTING=y
+
+#
+# Frame buffer hardware drivers
+#
+CONFIG_FB_CIRRUS=m
+CONFIG_FB_PM2=m
+# CONFIG_FB_PM2_FIFO_DISCONNECT is not set
+CONFIG_FB_CYBER2000=m
+CONFIG_FB_CYBER2000_DDC=y
+CONFIG_FB_ARC=m
+# CONFIG_FB_ASILIANT is not set
+# CONFIG_FB_IMSTT is not set
+CONFIG_FB_VGA16=m
+CONFIG_FB_UVESA=m
+CONFIG_FB_VESA=y
+CONFIG_FB_EFI=y
+# CONFIG_FB_N411 is not set
+# CONFIG_FB_HGA is not set
+CONFIG_FB_OPENCORES=m
+# CONFIG_FB_S1D13XXX is not set
+CONFIG_FB_NVIDIA=m
+CONFIG_FB_NVIDIA_I2C=y
+# CONFIG_FB_NVIDIA_DEBUG is not set
+CONFIG_FB_NVIDIA_BACKLIGHT=y
+CONFIG_FB_RIVA=m
+# CONFIG_FB_RIVA_I2C is not set
+# CONFIG_FB_RIVA_DEBUG is not set
+CONFIG_FB_RIVA_BACKLIGHT=y
+CONFIG_FB_I740=m
+CONFIG_FB_LE80578=m
+CONFIG_FB_CARILLO_RANCH=m
+CONFIG_FB_INTEL=m
+# CONFIG_FB_INTEL_DEBUG is not set
+CONFIG_FB_INTEL_I2C=y
+CONFIG_FB_MATROX=m
+CONFIG_FB_MATROX_MILLENIUM=y
+CONFIG_FB_MATROX_MYSTIQUE=y
+CONFIG_FB_MATROX_G=y
+CONFIG_FB_MATROX_I2C=m
+CONFIG_FB_MATROX_MAVEN=m
+CONFIG_FB_RADEON=m
+CONFIG_FB_RADEON_I2C=y
+CONFIG_FB_RADEON_BACKLIGHT=y
+# CONFIG_FB_RADEON_DEBUG is not set
+CONFIG_FB_ATY128=m
+CONFIG_FB_ATY128_BACKLIGHT=y
+CONFIG_FB_ATY=m
+CONFIG_FB_ATY_CT=y
+CONFIG_FB_ATY_GENERIC_LCD=y
+CONFIG_FB_ATY_GX=y
+CONFIG_FB_ATY_BACKLIGHT=y
+CONFIG_FB_S3=m
+CONFIG_FB_S3_DDC=y
+CONFIG_FB_SAVAGE=m
+CONFIG_FB_SAVAGE_I2C=y
+CONFIG_FB_SAVAGE_ACCEL=y
+CONFIG_FB_SIS=m
+CONFIG_FB_SIS_300=y
+CONFIG_FB_SIS_315=y
+CONFIG_FB_VIA=m
+# CONFIG_FB_VIA_DIRECT_PROCFS is not set
+# CONFIG_FB_VIA_X_COMPATIBILITY is not set
+CONFIG_FB_NEOMAGIC=m
+CONFIG_FB_KYRO=m
+CONFIG_FB_3DFX=m
+# CONFIG_FB_3DFX_ACCEL is not set
+CONFIG_FB_3DFX_I2C=y
+CONFIG_FB_VOODOO1=m
+CONFIG_FB_VT8623=m
+CONFIG_FB_TRIDENT=m
+CONFIG_FB_ARK=m
+CONFIG_FB_PM3=m
+CONFIG_FB_CARMINE=m
+CONFIG_FB_CARMINE_DRAM_EVAL=y
+# CONFIG_CARMINE_DRAM_CUSTOM is not set
+CONFIG_FB_SMSCUFX=m
+CONFIG_FB_UDL=m
+CONFIG_FB_IBM_GXT4500=m
+# CONFIG_FB_VIRTUAL is not set
+CONFIG_XEN_FBDEV_FRONTEND=y
+# CONFIG_FB_METRONOME is not set
+CONFIG_FB_MB862XX=m
+CONFIG_FB_MB862XX_PCI_GDC=y
+CONFIG_FB_MB862XX_I2C=y
+CONFIG_FB_HYPERV=m
+CONFIG_FB_SIMPLE=y
+CONFIG_FB_SM712=m
+# end of Frame buffer Devices
+
+#
+# Backlight & LCD device support
+#
+CONFIG_LCD_CLASS_DEVICE=m
+CONFIG_LCD_L4F00242T03=m
+CONFIG_LCD_LMS283GF05=m
+CONFIG_LCD_LTV350QV=m
+CONFIG_LCD_ILI922X=m
+CONFIG_LCD_ILI9320=m
+CONFIG_LCD_TDO24M=m
+CONFIG_LCD_VGG2432A4=m
+# CONFIG_LCD_PLATFORM is not set
+CONFIG_LCD_AMS369FG06=m
+CONFIG_LCD_LMS501KF03=m
+CONFIG_LCD_HX8357=m
+# CONFIG_LCD_OTM3225A is not set
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_BACKLIGHT_GENERIC is not set
+CONFIG_BACKLIGHT_CARILLO_RANCH=m
+CONFIG_BACKLIGHT_PWM=m
+CONFIG_BACKLIGHT_DA903X=m
+CONFIG_BACKLIGHT_DA9052=m
+CONFIG_BACKLIGHT_MAX8925=m
+CONFIG_BACKLIGHT_APPLE=m
+CONFIG_BACKLIGHT_PM8941_WLED=m
+CONFIG_BACKLIGHT_SAHARA=m
+CONFIG_BACKLIGHT_WM831X=m
+CONFIG_BACKLIGHT_ADP5520=m
+CONFIG_BACKLIGHT_ADP8860=m
+CONFIG_BACKLIGHT_ADP8870=m
+CONFIG_BACKLIGHT_88PM860X=m
+CONFIG_BACKLIGHT_AAT2870=m
+CONFIG_BACKLIGHT_LM3630A=m
+CONFIG_BACKLIGHT_LM3639=m
+CONFIG_BACKLIGHT_LP855X=m
+CONFIG_BACKLIGHT_LP8788=m
+CONFIG_BACKLIGHT_PANDORA=m
+CONFIG_BACKLIGHT_AS3711=m
+CONFIG_BACKLIGHT_GPIO=m
+CONFIG_BACKLIGHT_LV5207LP=m
+CONFIG_BACKLIGHT_BD6107=m
+CONFIG_BACKLIGHT_ARCXCNN=m
+# end of Backlight & LCD device support
+
+CONFIG_VGASTATE=m
+CONFIG_VIDEOMODE_HELPERS=y
+CONFIG_HDMI=y
+
+#
+# Console display driver support
+#
+CONFIG_VGA_CONSOLE=y
+# CONFIG_VGACON_SOFT_SCROLLBACK is not set
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_DUMMY_CONSOLE_COLUMNS=80
+CONFIG_DUMMY_CONSOLE_ROWS=25
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
+# CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set
+# end of Console display driver support
+
+# CONFIG_LOGO is not set
+# end of Graphics support
+
+CONFIG_SOUND=m
+CONFIG_SOUND_OSS_CORE=y
+# CONFIG_SOUND_OSS_CORE_PRECLAIM is not set
+CONFIG_SND=m
+CONFIG_SND_TIMER=m
+CONFIG_SND_PCM=m
+CONFIG_SND_PCM_ELD=y
+CONFIG_SND_PCM_IEC958=y
+CONFIG_SND_HWDEP=m
+CONFIG_SND_SEQ_DEVICE=m
+CONFIG_SND_RAWMIDI=m
+CONFIG_SND_COMPRESS_OFFLOAD=m
+CONFIG_SND_JACK=y
+CONFIG_SND_JACK_INPUT_DEV=y
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_MIXER_OSS=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_PCM_OSS_PLUGINS=y
+CONFIG_SND_PCM_TIMER=y
+CONFIG_SND_HRTIMER=m
+CONFIG_SND_DYNAMIC_MINORS=y
+CONFIG_SND_MAX_CARDS=32
+CONFIG_SND_SUPPORT_OLD_API=y
+CONFIG_SND_PROC_FS=y
+CONFIG_SND_VERBOSE_PROCFS=y
+# CONFIG_SND_VERBOSE_PRINTK is not set
+CONFIG_SND_DEBUG=y
+# CONFIG_SND_DEBUG_VERBOSE is not set
+CONFIG_SND_PCM_XRUN_DEBUG=y
+CONFIG_SND_VMASTER=y
+CONFIG_SND_DMA_SGBUF=y
+CONFIG_SND_SEQUENCER=m
+CONFIG_SND_SEQ_DUMMY=m
+CONFIG_SND_SEQUENCER_OSS=m
+CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
+CONFIG_SND_SEQ_MIDI_EVENT=m
+CONFIG_SND_SEQ_MIDI=m
+CONFIG_SND_SEQ_MIDI_EMUL=m
+CONFIG_SND_SEQ_VIRMIDI=m
+CONFIG_SND_MPU401_UART=m
+CONFIG_SND_OPL3_LIB=m
+CONFIG_SND_OPL3_LIB_SEQ=m
+CONFIG_SND_VX_LIB=m
+CONFIG_SND_AC97_CODEC=m
+CONFIG_SND_DRIVERS=y
+# CONFIG_SND_PCSP is not set
+CONFIG_SND_DUMMY=m
+CONFIG_SND_ALOOP=m
+CONFIG_SND_VIRMIDI=m
+CONFIG_SND_MTPAV=m
+CONFIG_SND_MTS64=m
+CONFIG_SND_SERIAL_U16550=m
+CONFIG_SND_MPU401=m
+CONFIG_SND_PORTMAN2X4=m
+CONFIG_SND_AC97_POWER_SAVE=y
+CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
+CONFIG_SND_SB_COMMON=m
+CONFIG_SND_PCI=y
+CONFIG_SND_AD1889=m
+CONFIG_SND_ALS300=m
+CONFIG_SND_ALS4000=m
+CONFIG_SND_ALI5451=m
+CONFIG_SND_ASIHPI=m
+CONFIG_SND_ATIIXP=m
+CONFIG_SND_ATIIXP_MODEM=m
+CONFIG_SND_AU8810=m
+CONFIG_SND_AU8820=m
+CONFIG_SND_AU8830=m
+CONFIG_SND_AW2=m
+CONFIG_SND_AZT3328=m
+CONFIG_SND_BT87X=m
+# CONFIG_SND_BT87X_OVERCLOCK is not set
+CONFIG_SND_CA0106=m
+CONFIG_SND_CMIPCI=m
+CONFIG_SND_OXYGEN_LIB=m
+CONFIG_SND_OXYGEN=m
+CONFIG_SND_CS4281=m
+CONFIG_SND_CS46XX=m
+CONFIG_SND_CS46XX_NEW_DSP=y
+CONFIG_SND_CTXFI=m
+CONFIG_SND_DARLA20=m
+CONFIG_SND_GINA20=m
+CONFIG_SND_LAYLA20=m
+CONFIG_SND_DARLA24=m
+CONFIG_SND_GINA24=m
+CONFIG_SND_LAYLA24=m
+CONFIG_SND_MONA=m
+CONFIG_SND_MIA=m
+CONFIG_SND_ECHO3G=m
+CONFIG_SND_INDIGO=m
+CONFIG_SND_INDIGOIO=m
+CONFIG_SND_INDIGODJ=m
+CONFIG_SND_INDIGOIOX=m
+CONFIG_SND_INDIGODJX=m
+CONFIG_SND_EMU10K1=m
+CONFIG_SND_EMU10K1_SEQ=m
+CONFIG_SND_EMU10K1X=m
+CONFIG_SND_ENS1370=m
+CONFIG_SND_ENS1371=m
+CONFIG_SND_ES1938=m
+CONFIG_SND_ES1968=m
+CONFIG_SND_ES1968_INPUT=y
+CONFIG_SND_ES1968_RADIO=y
+CONFIG_SND_FM801=m
+CONFIG_SND_FM801_TEA575X_BOOL=y
+CONFIG_SND_HDSP=m
+CONFIG_SND_HDSPM=m
+CONFIG_SND_ICE1712=m
+CONFIG_SND_ICE1724=m
+CONFIG_SND_INTEL8X0=m
+CONFIG_SND_INTEL8X0M=m
+CONFIG_SND_KORG1212=m
+CONFIG_SND_LOLA=m
+CONFIG_SND_LX6464ES=m
+CONFIG_SND_MAESTRO3=m
+CONFIG_SND_MAESTRO3_INPUT=y
+CONFIG_SND_MIXART=m
+CONFIG_SND_NM256=m
+CONFIG_SND_PCXHR=m
+CONFIG_SND_RIPTIDE=m
+CONFIG_SND_RME32=m
+CONFIG_SND_RME96=m
+CONFIG_SND_RME9652=m
+CONFIG_SND_SONICVIBES=m
+CONFIG_SND_TRIDENT=m
+CONFIG_SND_VIA82XX=m
+CONFIG_SND_VIA82XX_MODEM=m
+CONFIG_SND_VIRTUOSO=m
+CONFIG_SND_VX222=m
+CONFIG_SND_YMFPCI=m
+
+#
+# HD-Audio
+#
+CONFIG_SND_HDA=m
+CONFIG_SND_HDA_INTEL=m
+# CONFIG_SND_HDA_INTEL_DETECT_DMIC is not set
+CONFIG_SND_HDA_HWDEP=y
+CONFIG_SND_HDA_RECONFIG=y
+CONFIG_SND_HDA_INPUT_BEEP=y
+CONFIG_SND_HDA_INPUT_BEEP_MODE=1
+CONFIG_SND_HDA_PATCH_LOADER=y
+CONFIG_SND_HDA_CODEC_REALTEK=m
+CONFIG_SND_HDA_CODEC_ANALOG=m
+CONFIG_SND_HDA_CODEC_SIGMATEL=m
+CONFIG_SND_HDA_CODEC_VIA=m
+CONFIG_SND_HDA_CODEC_HDMI=m
+CONFIG_SND_HDA_CODEC_CIRRUS=m
+CONFIG_SND_HDA_CODEC_CONEXANT=m
+CONFIG_SND_HDA_CODEC_CA0110=m
+CONFIG_SND_HDA_CODEC_CA0132=m
+CONFIG_SND_HDA_CODEC_CA0132_DSP=y
+CONFIG_SND_HDA_CODEC_CMEDIA=m
+CONFIG_SND_HDA_CODEC_SI3054=m
+CONFIG_SND_HDA_GENERIC=m
+CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
+# end of HD-Audio
+
+CONFIG_SND_HDA_CORE=m
+CONFIG_SND_HDA_DSP_LOADER=y
+CONFIG_SND_HDA_COMPONENT=y
+CONFIG_SND_HDA_I915=y
+CONFIG_SND_HDA_EXT_CORE=m
+CONFIG_SND_HDA_PREALLOC_SIZE=2048
+CONFIG_SND_INTEL_NHLT=m
+CONFIG_SND_SPI=y
+CONFIG_SND_USB=y
+CONFIG_SND_USB_AUDIO=m
+CONFIG_SND_USB_AUDIO_USE_MEDIA_CONTROLLER=y
+CONFIG_SND_USB_UA101=m
+CONFIG_SND_USB_USX2Y=m
+CONFIG_SND_USB_CAIAQ=m
+CONFIG_SND_USB_CAIAQ_INPUT=y
+CONFIG_SND_USB_US122L=m
+CONFIG_SND_USB_6FIRE=m
+CONFIG_SND_USB_HIFACE=m
+CONFIG_SND_BCD2000=m
+CONFIG_SND_USB_LINE6=m
+# CONFIG_SND_USB_POD is not set
+# CONFIG_SND_USB_PODHD is not set
+# CONFIG_SND_USB_TONEPORT is not set
+CONFIG_SND_USB_VARIAX=m
+CONFIG_SND_FIREWIRE=y
+CONFIG_SND_FIREWIRE_LIB=m
+CONFIG_SND_DICE=m
+CONFIG_SND_OXFW=m
+CONFIG_SND_ISIGHT=m
+CONFIG_SND_FIREWORKS=m
+CONFIG_SND_BEBOB=m
+CONFIG_SND_FIREWIRE_DIGI00X=m
+CONFIG_SND_FIREWIRE_TASCAM=m
+CONFIG_SND_FIREWIRE_MOTU=m
+CONFIG_SND_FIREFACE=m
+CONFIG_SND_PCMCIA=y
+CONFIG_SND_VXPOCKET=m
+CONFIG_SND_PDAUDIOCF=m
+CONFIG_SND_SOC=m
+CONFIG_SND_SOC_AC97_BUS=y
+CONFIG_SND_SOC_COMPRESS=y
+CONFIG_SND_SOC_TOPOLOGY=y
+CONFIG_SND_SOC_ACPI=m
+CONFIG_SND_SOC_AMD_ACP=m
+CONFIG_SND_SOC_AMD_CZ_DA7219MX98357_MACH=m
+CONFIG_SND_SOC_AMD_CZ_RT5645_MACH=m
+CONFIG_SND_SOC_AMD_ACP3x=m
+# CONFIG_SND_ATMEL_SOC is not set
+# CONFIG_SND_DESIGNWARE_I2S is not set
+
+#
+# SoC Audio for Freescale CPUs
+#
+
+#
+# Common SoC Audio options for Freescale CPUs:
+#
+# CONFIG_SND_SOC_FSL_ASRC is not set
+# CONFIG_SND_SOC_FSL_SAI is not set
+# CONFIG_SND_SOC_FSL_AUDMIX is not set
+# CONFIG_SND_SOC_FSL_SSI is not set
+# CONFIG_SND_SOC_FSL_SPDIF is not set
+# CONFIG_SND_SOC_FSL_ESAI is not set
+# CONFIG_SND_SOC_FSL_MICFIL is not set
+# CONFIG_SND_SOC_IMX_AUDMUX is not set
+# end of SoC Audio for Freescale CPUs
+
+# CONFIG_SND_I2S_HI6210_I2S is not set
+# CONFIG_SND_SOC_IMG is not set
+CONFIG_SND_SOC_INTEL_SST_TOPLEVEL=y
+CONFIG_SND_SST_IPC=m
+CONFIG_SND_SST_IPC_PCI=m
+CONFIG_SND_SST_IPC_ACPI=m
+CONFIG_SND_SOC_INTEL_SST_ACPI=m
+CONFIG_SND_SOC_INTEL_SST=m
+CONFIG_SND_SOC_INTEL_SST_FIRMWARE=m
+CONFIG_SND_SOC_INTEL_HASWELL=m
+CONFIG_SND_SST_ATOM_HIFI2_PLATFORM=m
+CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_PCI=m
+CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI=m
+CONFIG_SND_SOC_INTEL_SKYLAKE=m
+CONFIG_SND_SOC_INTEL_SKL=m
+CONFIG_SND_SOC_INTEL_APL=m
+CONFIG_SND_SOC_INTEL_KBL=m
+CONFIG_SND_SOC_INTEL_GLK=m
+CONFIG_SND_SOC_INTEL_CNL=m
+CONFIG_SND_SOC_INTEL_CFL=m
+CONFIG_SND_SOC_INTEL_CML_H=m
+CONFIG_SND_SOC_INTEL_CML_LP=m
+CONFIG_SND_SOC_INTEL_SKYLAKE_FAMILY=m
+CONFIG_SND_SOC_INTEL_SKYLAKE_SSP_CLK=m
+CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC=y
+CONFIG_SND_SOC_INTEL_SKYLAKE_COMMON=m
+CONFIG_SND_SOC_ACPI_INTEL_MATCH=m
+CONFIG_SND_SOC_INTEL_MACH=y
+CONFIG_SND_SOC_INTEL_HASWELL_MACH=m
+CONFIG_SND_SOC_INTEL_BDW_RT5677_MACH=m
+CONFIG_SND_SOC_INTEL_BROADWELL_MACH=m
+CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH=m
+CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH=m
+CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH=m
+CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH=m
+CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH=m
+CONFIG_SND_SOC_INTEL_CHT_BSW_NAU8824_MACH=m
+CONFIG_SND_SOC_INTEL_BYT_CHT_CX2072X_MACH=m
+CONFIG_SND_SOC_INTEL_BYT_CHT_DA7213_MACH=m
+CONFIG_SND_SOC_INTEL_BYT_CHT_ES8316_MACH=m
+CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH=m
+CONFIG_SND_SOC_INTEL_SKL_RT286_MACH=m
+CONFIG_SND_SOC_INTEL_SKL_NAU88L25_SSM4567_MACH=m
+CONFIG_SND_SOC_INTEL_SKL_NAU88L25_MAX98357A_MACH=m
+CONFIG_SND_SOC_INTEL_DA7219_MAX98357A_GENERIC=m
+CONFIG_SND_SOC_INTEL_BXT_DA7219_MAX98357A_MACH=m
+CONFIG_SND_SOC_INTEL_BXT_RT298_MACH=m
+CONFIG_SND_SOC_INTEL_KBL_RT5663_MAX98927_MACH=m
+CONFIG_SND_SOC_INTEL_KBL_RT5663_RT5514_MAX98927_MACH=m
+CONFIG_SND_SOC_INTEL_KBL_DA7219_MAX98357A_MACH=m
+CONFIG_SND_SOC_INTEL_KBL_DA7219_MAX98927_MACH=m
+CONFIG_SND_SOC_INTEL_KBL_RT5660_MACH=m
+CONFIG_SND_SOC_INTEL_GLK_RT5682_MAX98357A_MACH=m
+CONFIG_SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH=m
+CONFIG_SND_SOC_INTEL_SOF_RT5682_MACH=m
+CONFIG_SND_SOC_INTEL_CML_LP_DA7219_MAX98357A_MACH=m
+CONFIG_SND_SOC_MTK_BTCVSD=m
+CONFIG_SND_SOC_SOF_TOPLEVEL=y
+CONFIG_SND_SOC_SOF_PCI=m
+CONFIG_SND_SOC_SOF_ACPI=m
+CONFIG_SND_SOC_SOF_OPTIONS=m
+# CONFIG_SND_SOC_SOF_NOCODEC_SUPPORT is not set
+# CONFIG_SND_SOC_SOF_STRICT_ABI_CHECKS is not set
+# CONFIG_SND_SOC_SOF_DEBUG is not set
+CONFIG_SND_SOC_SOF=m
+CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE=y
+CONFIG_SND_SOC_SOF_INTEL_TOPLEVEL=y
+CONFIG_SND_SOC_SOF_INTEL_ACPI=m
+CONFIG_SND_SOC_SOF_INTEL_PCI=m
+CONFIG_SND_SOC_SOF_INTEL_HIFI_EP_IPC=m
+CONFIG_SND_SOC_SOF_INTEL_ATOM_HIFI_EP=m
+CONFIG_SND_SOC_SOF_INTEL_COMMON=m
+CONFIG_SND_SOC_SOF_BAYTRAIL_SUPPORT=y
+CONFIG_SND_SOC_SOF_BAYTRAIL=m
+CONFIG_SND_SOC_SOF_BROADWELL_SUPPORT=y
+CONFIG_SND_SOC_SOF_BROADWELL=m
+CONFIG_SND_SOC_SOF_MERRIFIELD_SUPPORT=y
+CONFIG_SND_SOC_SOF_MERRIFIELD=m
+CONFIG_SND_SOC_SOF_APOLLOLAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_APOLLOLAKE=m
+CONFIG_SND_SOC_SOF_GEMINILAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_GEMINILAKE=m
+CONFIG_SND_SOC_SOF_CANNONLAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_CANNONLAKE=m
+CONFIG_SND_SOC_SOF_COFFEELAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_COFFEELAKE=m
+CONFIG_SND_SOC_SOF_ICELAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_ICELAKE=m
+CONFIG_SND_SOC_SOF_COMETLAKE_LP=m
+CONFIG_SND_SOC_SOF_COMETLAKE_LP_SUPPORT=y
+CONFIG_SND_SOC_SOF_COMETLAKE_H=m
+CONFIG_SND_SOC_SOF_COMETLAKE_H_SUPPORT=y
+CONFIG_SND_SOC_SOF_TIGERLAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_TIGERLAKE=m
+CONFIG_SND_SOC_SOF_ELKHARTLAKE_SUPPORT=y
+CONFIG_SND_SOC_SOF_ELKHARTLAKE=m
+CONFIG_SND_SOC_SOF_HDA_COMMON=m
+CONFIG_SND_SOC_SOF_HDA_LINK=y
+CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC=y
+# CONFIG_SND_SOC_SOF_HDA_ALWAYS_ENABLE_DMI_L1 is not set
+CONFIG_SND_SOC_SOF_HDA_LINK_BASELINE=m
+CONFIG_SND_SOC_SOF_HDA=m
+CONFIG_SND_SOC_SOF_XTENSA=m
+
+#
+# STMicroelectronics STM32 SOC audio support
+#
+# end of STMicroelectronics STM32 SOC audio support
+
+CONFIG_SND_SOC_XILINX_I2S=m
+# CONFIG_SND_SOC_XILINX_AUDIO_FORMATTER is not set
+# CONFIG_SND_SOC_XILINX_SPDIF is not set
+# CONFIG_SND_SOC_XTFPGA_I2S is not set
+# CONFIG_ZX_TDM is not set
+CONFIG_SND_SOC_I2C_AND_SPI=m
+
+#
+# CODEC drivers
+#
+CONFIG_SND_SOC_AC97_CODEC=m
+CONFIG_SND_SOC_ADAU_UTILS=m
+# CONFIG_SND_SOC_ADAU1701 is not set
+CONFIG_SND_SOC_ADAU17X1=m
+CONFIG_SND_SOC_ADAU1761=m
+CONFIG_SND_SOC_ADAU1761_I2C=m
+CONFIG_SND_SOC_ADAU1761_SPI=m
+CONFIG_SND_SOC_ADAU7002=m
+# CONFIG_SND_SOC_AK4104 is not set
+# CONFIG_SND_SOC_AK4118 is not set
+# CONFIG_SND_SOC_AK4458 is not set
+# CONFIG_SND_SOC_AK4554 is not set
+# CONFIG_SND_SOC_AK4613 is not set
+# CONFIG_SND_SOC_AK4642 is not set
+# CONFIG_SND_SOC_AK5386 is not set
+# CONFIG_SND_SOC_AK5558 is not set
+# CONFIG_SND_SOC_ALC5623 is not set
+# CONFIG_SND_SOC_BD28623 is not set
+# CONFIG_SND_SOC_BT_SCO is not set
+# CONFIG_SND_SOC_CROS_EC_CODEC is not set
+# CONFIG_SND_SOC_CS35L32 is not set
+# CONFIG_SND_SOC_CS35L33 is not set
+CONFIG_SND_SOC_CS35L34=m
+CONFIG_SND_SOC_CS35L35=m
+CONFIG_SND_SOC_CS35L36=m
+CONFIG_SND_SOC_CS42L42=m
+# CONFIG_SND_SOC_CS42L51_I2C is not set
+# CONFIG_SND_SOC_CS42L52 is not set
+# CONFIG_SND_SOC_CS42L56 is not set
+# CONFIG_SND_SOC_CS42L73 is not set
+# CONFIG_SND_SOC_CS4265 is not set
+# CONFIG_SND_SOC_CS4270 is not set
+# CONFIG_SND_SOC_CS4271_I2C is not set
+# CONFIG_SND_SOC_CS4271_SPI is not set
+# CONFIG_SND_SOC_CS42XX8_I2C is not set
+CONFIG_SND_SOC_CS43130=m
+CONFIG_SND_SOC_CS4341=m
+# CONFIG_SND_SOC_CS4349 is not set
+# CONFIG_SND_SOC_CS53L30 is not set
+CONFIG_SND_SOC_CX2072X=m
+CONFIG_SND_SOC_DA7213=m
+CONFIG_SND_SOC_DA7219=m
+CONFIG_SND_SOC_DMIC=m
+CONFIG_SND_SOC_HDMI_CODEC=m
+# CONFIG_SND_SOC_ES7134 is not set
+# CONFIG_SND_SOC_ES7241 is not set
+CONFIG_SND_SOC_ES8316=m
+# CONFIG_SND_SOC_ES8328_I2C is not set
+# CONFIG_SND_SOC_ES8328_SPI is not set
+# CONFIG_SND_SOC_GTM601 is not set
+CONFIG_SND_SOC_HDAC_HDMI=m
+CONFIG_SND_SOC_HDAC_HDA=m
+# CONFIG_SND_SOC_INNO_RK3036 is not set
+CONFIG_SND_SOC_MAX98088=m
+CONFIG_SND_SOC_MAX98090=m
+CONFIG_SND_SOC_MAX98357A=m
+# CONFIG_SND_SOC_MAX98504 is not set
+# CONFIG_SND_SOC_MAX9867 is not set
+CONFIG_SND_SOC_MAX98927=m
+CONFIG_SND_SOC_MAX98373=m
+# CONFIG_SND_SOC_MAX9860 is not set
+# CONFIG_SND_SOC_MSM8916_WCD_ANALOG is not set
+# CONFIG_SND_SOC_MSM8916_WCD_DIGITAL is not set
+# CONFIG_SND_SOC_PCM1681 is not set
+# CONFIG_SND_SOC_PCM1789_I2C is not set
+# CONFIG_SND_SOC_PCM179X_I2C is not set
+# CONFIG_SND_SOC_PCM179X_SPI is not set
+# CONFIG_SND_SOC_PCM186X_I2C is not set
+# CONFIG_SND_SOC_PCM186X_SPI is not set
+# CONFIG_SND_SOC_PCM3060_I2C is not set
+# CONFIG_SND_SOC_PCM3060_SPI is not set
+# CONFIG_SND_SOC_PCM3168A_I2C is not set
+# CONFIG_SND_SOC_PCM3168A_SPI is not set
+# CONFIG_SND_SOC_PCM512x_I2C is not set
+# CONFIG_SND_SOC_PCM512x_SPI is not set
+# CONFIG_SND_SOC_RK3328 is not set
+CONFIG_SND_SOC_RL6231=m
+CONFIG_SND_SOC_RL6347A=m
+CONFIG_SND_SOC_RT286=m
+CONFIG_SND_SOC_RT298=m
+CONFIG_SND_SOC_RT5514=m
+CONFIG_SND_SOC_RT5514_SPI=m
+# CONFIG_SND_SOC_RT5616 is not set
+# CONFIG_SND_SOC_RT5631 is not set
+CONFIG_SND_SOC_RT5640=m
+CONFIG_SND_SOC_RT5645=m
+CONFIG_SND_SOC_RT5651=m
+CONFIG_SND_SOC_RT5660=m
+CONFIG_SND_SOC_RT5663=m
+CONFIG_SND_SOC_RT5670=m
+CONFIG_SND_SOC_RT5677=m
+CONFIG_SND_SOC_RT5677_SPI=m
+CONFIG_SND_SOC_RT5682=m
+# CONFIG_SND_SOC_SGTL5000 is not set
+CONFIG_SND_SOC_SIGMADSP=m
+CONFIG_SND_SOC_SIGMADSP_REGMAP=m
+# CONFIG_SND_SOC_SIMPLE_AMPLIFIER is not set
+# CONFIG_SND_SOC_SIRF_AUDIO_CODEC is not set
+# CONFIG_SND_SOC_SPDIF is not set
+# CONFIG_SND_SOC_SSM2305 is not set
+# CONFIG_SND_SOC_SSM2602_SPI is not set
+# CONFIG_SND_SOC_SSM2602_I2C is not set
+CONFIG_SND_SOC_SSM4567=m
+# CONFIG_SND_SOC_STA32X is not set
+# CONFIG_SND_SOC_STA350 is not set
+# CONFIG_SND_SOC_STI_SAS is not set
+# CONFIG_SND_SOC_TAS2552 is not set
+# CONFIG_SND_SOC_TAS5086 is not set
+# CONFIG_SND_SOC_TAS571X is not set
+# CONFIG_SND_SOC_TAS5720 is not set
+# CONFIG_SND_SOC_TAS6424 is not set
+# CONFIG_SND_SOC_TDA7419 is not set
+# CONFIG_SND_SOC_TFA9879 is not set
+# CONFIG_SND_SOC_TLV320AIC23_I2C is not set
+# CONFIG_SND_SOC_TLV320AIC23_SPI is not set
+# CONFIG_SND_SOC_TLV320AIC31XX is not set
+# CONFIG_SND_SOC_TLV320AIC32X4_I2C is not set
+# CONFIG_SND_SOC_TLV320AIC32X4_SPI is not set
+# CONFIG_SND_SOC_TLV320AIC3X is not set
+CONFIG_SND_SOC_TS3A227E=m
+# CONFIG_SND_SOC_TSCS42XX is not set
+# CONFIG_SND_SOC_TSCS454 is not set
+# CONFIG_SND_SOC_UDA1334 is not set
+# CONFIG_SND_SOC_WM8510 is not set
+# CONFIG_SND_SOC_WM8523 is not set
+CONFIG_SND_SOC_WM8524=m
+# CONFIG_SND_SOC_WM8580 is not set
+# CONFIG_SND_SOC_WM8711 is not set
+# CONFIG_SND_SOC_WM8728 is not set
+# CONFIG_SND_SOC_WM8731 is not set
+# CONFIG_SND_SOC_WM8737 is not set
+# CONFIG_SND_SOC_WM8741 is not set
+# CONFIG_SND_SOC_WM8750 is not set
+# CONFIG_SND_SOC_WM8753 is not set
+# CONFIG_SND_SOC_WM8770 is not set
+# CONFIG_SND_SOC_WM8776 is not set
+CONFIG_SND_SOC_WM8782=m
+# CONFIG_SND_SOC_WM8804_I2C is not set
+# CONFIG_SND_SOC_WM8804_SPI is not set
+# CONFIG_SND_SOC_WM8903 is not set
+# CONFIG_SND_SOC_WM8904 is not set
+# CONFIG_SND_SOC_WM8960 is not set
+# CONFIG_SND_SOC_WM8962 is not set
+# CONFIG_SND_SOC_WM8974 is not set
+# CONFIG_SND_SOC_WM8978 is not set
+# CONFIG_SND_SOC_WM8985 is not set
+CONFIG_SND_SOC_ZX_AUD96P22=m
+# CONFIG_SND_SOC_MAX9759 is not set
+# CONFIG_SND_SOC_MT6351 is not set
+# CONFIG_SND_SOC_MT6358 is not set
+CONFIG_SND_SOC_NAU8540=m
+CONFIG_SND_SOC_NAU8810=m
+# CONFIG_SND_SOC_NAU8822 is not set
+CONFIG_SND_SOC_NAU8824=m
+CONFIG_SND_SOC_NAU8825=m
+# CONFIG_SND_SOC_TPA6130A2 is not set
+# end of CODEC drivers
+
+# CONFIG_SND_SIMPLE_CARD is not set
+CONFIG_SND_X86=y
+CONFIG_HDMI_LPE_AUDIO=m
+CONFIG_SND_SYNTH_EMUX=m
+CONFIG_SND_XEN_FRONTEND=m
+CONFIG_AC97_BUS=m
+
+#
+# HID support
+#
+CONFIG_HID=m
+CONFIG_HID_BATTERY_STRENGTH=y
+CONFIG_HIDRAW=y
+CONFIG_UHID=m
+CONFIG_HID_GENERIC=m
+
+#
+# Special HID drivers
+#
+CONFIG_HID_A4TECH=m
+# CONFIG_HID_ACCUTOUCH is not set
+CONFIG_HID_ACRUX=m
+CONFIG_HID_ACRUX_FF=y
+CONFIG_HID_APPLE=m
+CONFIG_HID_APPLEIR=m
+CONFIG_HID_ASUS=m
+CONFIG_HID_AUREAL=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_BETOP_FF=m
+CONFIG_HID_BIGBEN_FF=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CORSAIR=m
+CONFIG_HID_COUGAR=m
+CONFIG_HID_MACALLY=m
+CONFIG_HID_PRODIKEYS=m
+CONFIG_HID_CMEDIA=m
+CONFIG_HID_CP2112=m
+CONFIG_HID_CREATIVE_SB0540=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_DRAGONRISE=m
+CONFIG_DRAGONRISE_FF=y
+CONFIG_HID_EMS_FF=m
+CONFIG_HID_ELAN=m
+CONFIG_HID_ELECOM=m
+CONFIG_HID_ELO=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_GEMBIRD=m
+CONFIG_HID_GFRM=m
+CONFIG_HID_HOLTEK=m
+CONFIG_HOLTEK_FF=y
+CONFIG_HID_GOOGLE_HAMMER=m
+CONFIG_HID_GT683R=m
+CONFIG_HID_KEYTOUCH=m
+CONFIG_HID_KYE=m
+CONFIG_HID_UCLOGIC=m
+CONFIG_HID_WALTOP=m
+# CONFIG_HID_VIEWSONIC is not set
+CONFIG_HID_GYRATION=m
+CONFIG_HID_ICADE=m
+CONFIG_HID_ITE=m
+CONFIG_HID_JABRA=m
+CONFIG_HID_TWINHAN=m
+CONFIG_HID_KENSINGTON=m
+CONFIG_HID_LCPOWER=m
+CONFIG_HID_LED=m
+CONFIG_HID_LENOVO=m
+CONFIG_HID_LOGITECH=m
+CONFIG_HID_LOGITECH_DJ=m
+CONFIG_HID_LOGITECH_HIDPP=m
+CONFIG_LOGITECH_FF=y
+CONFIG_LOGIRUMBLEPAD2_FF=y
+CONFIG_LOGIG940_FF=y
+CONFIG_LOGIWHEELS_FF=y
+CONFIG_HID_MAGICMOUSE=m
+# CONFIG_HID_MALTRON is not set
+CONFIG_HID_MAYFLASH=m
+CONFIG_HID_REDRAGON=m
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_MULTITOUCH=m
+# CONFIG_HID_NTI is not set
+CONFIG_HID_NTRIG=m
+CONFIG_HID_ORTEK=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_PANTHERLORD_FF=y
+CONFIG_HID_PENMOUNT=m
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_PICOLCD=m
+CONFIG_HID_PICOLCD_FB=y
+CONFIG_HID_PICOLCD_BACKLIGHT=y
+CONFIG_HID_PICOLCD_LCD=y
+CONFIG_HID_PICOLCD_LEDS=y
+CONFIG_HID_PICOLCD_CIR=y
+CONFIG_HID_PLANTRONICS=m
+CONFIG_HID_PRIMAX=m
+CONFIG_HID_RETRODE=m
+CONFIG_HID_ROCCAT=m
+CONFIG_HID_SAITEK=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SONY=m
+CONFIG_SONY_FF=y
+CONFIG_HID_SPEEDLINK=m
+CONFIG_HID_STEAM=m
+CONFIG_HID_STEELSERIES=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_HID_RMI=m
+CONFIG_HID_GREENASIA=m
+CONFIG_GREENASIA_FF=y
+CONFIG_HID_HYPERV_MOUSE=m
+CONFIG_HID_SMARTJOYPLUS=m
+CONFIG_SMARTJOYPLUS_FF=y
+CONFIG_HID_TIVO=m
+CONFIG_HID_TOPSEED=m
+CONFIG_HID_THINGM=m
+CONFIG_HID_THRUSTMASTER=m
+CONFIG_THRUSTMASTER_FF=y
+# CONFIG_HID_UDRAW_PS3 is not set
+# CONFIG_HID_U2FZERO is not set
+CONFIG_HID_WACOM=m
+CONFIG_HID_WIIMOTE=m
+CONFIG_HID_XINMO=m
+CONFIG_HID_ZEROPLUS=m
+CONFIG_ZEROPLUS_FF=y
+CONFIG_HID_ZYDACRON=m
+CONFIG_HID_SENSOR_HUB=m
+# CONFIG_HID_SENSOR_CUSTOM_SENSOR is not set
+# CONFIG_HID_ALPS is not set
+# end of Special HID drivers
+
+#
+# USB HID support
+#
+CONFIG_USB_HID=m
+CONFIG_HID_PID=y
+CONFIG_USB_HIDDEV=y
+
+#
+# USB HID Boot Protocol drivers
+#
+# CONFIG_USB_KBD is not set
+# CONFIG_USB_MOUSE is not set
+# end of USB HID Boot Protocol drivers
+# end of USB HID support
+
+#
+# I2C HID support
+#
+CONFIG_I2C_HID=m
+# end of I2C HID support
+
+#
+# Intel ISH HID support
+#
+CONFIG_INTEL_ISH_HID=m
+CONFIG_INTEL_ISH_FIRMWARE_DOWNLOADER=m
+# end of Intel ISH HID support
+# end of HID support
+
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_COMMON=m
+# CONFIG_USB_LED_TRIG is not set
+CONFIG_USB_ULPI_BUS=m
+# CONFIG_USB_CONN_GPIO is not set
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB=m
+CONFIG_USB_PCI=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+
+#
+# Miscellaneous USB options
+#
+CONFIG_USB_DEFAULT_PERSIST=y
+CONFIG_USB_DYNAMIC_MINORS=y
+CONFIG_USB_OTG=y
+# CONFIG_USB_OTG_WHITELIST is not set
+# CONFIG_USB_OTG_BLACKLIST_HUB is not set
+CONFIG_USB_OTG_FSM=m
+# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
+CONFIG_USB_AUTOSUSPEND_DELAY=2
+CONFIG_USB_MON=m
+
+#
+# USB Host Controller Drivers
+#
+# CONFIG_USB_C67X00_HCD is not set
+CONFIG_USB_XHCI_HCD=m
+# CONFIG_USB_XHCI_DBGCAP is not set
+CONFIG_USB_XHCI_PCI=m
+CONFIG_USB_XHCI_PLATFORM=m
+CONFIG_USB_EHCI_HCD=m
+CONFIG_USB_EHCI_ROOT_HUB_TT=y
+CONFIG_USB_EHCI_TT_NEWSCHED=y
+CONFIG_USB_EHCI_PCI=m
+# CONFIG_USB_EHCI_FSL is not set
+CONFIG_USB_EHCI_HCD_PLATFORM=m
+# CONFIG_USB_OXU210HP_HCD is not set
+# CONFIG_USB_ISP116X_HCD is not set
+CONFIG_USB_FOTG210_HCD=m
+CONFIG_USB_MAX3421_HCD=m
+CONFIG_USB_OHCI_HCD=m
+CONFIG_USB_OHCI_HCD_PCI=m
+# CONFIG_USB_OHCI_HCD_SSB is not set
+CONFIG_USB_OHCI_HCD_PLATFORM=m
+CONFIG_USB_UHCI_HCD=m
+CONFIG_USB_U132_HCD=m
+CONFIG_USB_SL811_HCD=m
+# CONFIG_USB_SL811_HCD_ISO is not set
+CONFIG_USB_SL811_CS=m
+# CONFIG_USB_R8A66597_HCD is not set
+CONFIG_USB_HCD_BCMA=m
+CONFIG_USB_HCD_SSB=m
+# CONFIG_USB_HCD_TEST_MODE is not set
+
+#
+# USB Device Class drivers
+#
+CONFIG_USB_ACM=m
+CONFIG_USB_PRINTER=m
+CONFIG_USB_WDM=m
+CONFIG_USB_TMC=m
+
+#
+# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
+#
+
+#
+# also be needed; see USB_STORAGE Help for more info
+#
+CONFIG_USB_STORAGE=m
+# CONFIG_USB_STORAGE_DEBUG is not set
+CONFIG_USB_STORAGE_REALTEK=m
+CONFIG_REALTEK_AUTOPM=y
+CONFIG_USB_STORAGE_DATAFAB=m
+CONFIG_USB_STORAGE_FREECOM=m
+CONFIG_USB_STORAGE_ISD200=m
+CONFIG_USB_STORAGE_USBAT=m
+CONFIG_USB_STORAGE_SDDR09=m
+CONFIG_USB_STORAGE_SDDR55=m
+CONFIG_USB_STORAGE_JUMPSHOT=m
+CONFIG_USB_STORAGE_ALAUDA=m
+CONFIG_USB_STORAGE_ONETOUCH=m
+CONFIG_USB_STORAGE_KARMA=m
+CONFIG_USB_STORAGE_CYPRESS_ATACB=m
+CONFIG_USB_STORAGE_ENE_UB6250=m
+CONFIG_USB_UAS=m
+
+#
+# USB Imaging devices
+#
+CONFIG_USB_MDC800=m
+CONFIG_USB_MICROTEK=m
+CONFIG_USBIP_CORE=m
+CONFIG_USBIP_VHCI_HCD=m
+CONFIG_USBIP_VHCI_HC_PORTS=8
+CONFIG_USBIP_VHCI_NR_HCS=1
+CONFIG_USBIP_HOST=m
+# CONFIG_USBIP_DEBUG is not set
+CONFIG_USB_CDNS3=m
+CONFIG_USB_CDNS3_HOST=y
+CONFIG_USB_CDNS3_PCI_WRAP=m
+CONFIG_USB_MUSB_HDRC=m
+CONFIG_USB_MUSB_HOST=y
+
+#
+# Platform Glue Layer
+#
+
+#
+# MUSB DMA mode
+#
+CONFIG_MUSB_PIO_ONLY=y
+CONFIG_USB_DWC3=m
+# CONFIG_USB_DWC3_ULPI is not set
+CONFIG_USB_DWC3_HOST=y
+
+#
+# Platform Glue Driver Support
+#
+CONFIG_USB_DWC3_PCI=m
+CONFIG_USB_DWC3_HAPS=m
+CONFIG_USB_DWC2=m
+CONFIG_USB_DWC2_HOST=y
+
+#
+# Gadget/Dual-role mode requires USB Gadget support to be enabled
+#
+CONFIG_USB_DWC2_PCI=m
+# CONFIG_USB_DWC2_DEBUG is not set
+# CONFIG_USB_DWC2_TRACK_MISSED_SOFS is not set
+# CONFIG_USB_CHIPIDEA is not set
+# CONFIG_USB_ISP1760 is not set
+
+#
+# USB port drivers
+#
+CONFIG_USB_USS720=m
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_SIMPLE=m
+CONFIG_USB_SERIAL_AIRCABLE=m
+CONFIG_USB_SERIAL_ARK3116=m
+CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CH341=m
+CONFIG_USB_SERIAL_WHITEHEAT=m
+CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
+CONFIG_USB_SERIAL_CP210X=m
+CONFIG_USB_SERIAL_CYPRESS_M8=m
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_VISOR=m
+CONFIG_USB_SERIAL_IPAQ=m
+CONFIG_USB_SERIAL_IR=m
+CONFIG_USB_SERIAL_EDGEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT_TI=m
+CONFIG_USB_SERIAL_F81232=m
+CONFIG_USB_SERIAL_F8153X=m
+CONFIG_USB_SERIAL_GARMIN=m
+CONFIG_USB_SERIAL_IPW=m
+CONFIG_USB_SERIAL_IUU=m
+CONFIG_USB_SERIAL_KEYSPAN_PDA=m
+CONFIG_USB_SERIAL_KEYSPAN=m
+CONFIG_USB_SERIAL_KLSI=m
+CONFIG_USB_SERIAL_KOBIL_SCT=m
+CONFIG_USB_SERIAL_MCT_U232=m
+CONFIG_USB_SERIAL_METRO=m
+CONFIG_USB_SERIAL_MOS7720=m
+CONFIG_USB_SERIAL_MOS7715_PARPORT=y
+CONFIG_USB_SERIAL_MOS7840=m
+CONFIG_USB_SERIAL_MXUPORT=m
+CONFIG_USB_SERIAL_NAVMAN=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_SERIAL_OTI6858=m
+CONFIG_USB_SERIAL_QCAUX=m
+CONFIG_USB_SERIAL_QUALCOMM=m
+CONFIG_USB_SERIAL_SPCP8X5=m
+CONFIG_USB_SERIAL_SAFE=m
+CONFIG_USB_SERIAL_SAFE_PADDED=y
+CONFIG_USB_SERIAL_SIERRAWIRELESS=m
+CONFIG_USB_SERIAL_SYMBOL=m
+CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_CYBERJACK=m
+CONFIG_USB_SERIAL_XIRCOM=m
+CONFIG_USB_SERIAL_WWAN=m
+CONFIG_USB_SERIAL_OPTION=m
+CONFIG_USB_SERIAL_OMNINET=m
+CONFIG_USB_SERIAL_OPTICON=m
+CONFIG_USB_SERIAL_XSENS_MT=m
+CONFIG_USB_SERIAL_WISHBONE=m
+CONFIG_USB_SERIAL_SSU100=m
+CONFIG_USB_SERIAL_QT2=m
+CONFIG_USB_SERIAL_UPD78F0730=m
+CONFIG_USB_SERIAL_DEBUG=m
+
+#
+# USB Miscellaneous drivers
+#
+CONFIG_USB_EMI62=m
+CONFIG_USB_EMI26=m
+CONFIG_USB_ADUTUX=m
+CONFIG_USB_SEVSEG=m
+CONFIG_USB_LEGOTOWER=m
+CONFIG_USB_LCD=m
+CONFIG_USB_CYPRESS_CY7C63=m
+CONFIG_USB_CYTHERM=m
+CONFIG_USB_IDMOUSE=m
+CONFIG_USB_FTDI_ELAN=m
+CONFIG_USB_APPLEDISPLAY=m
+CONFIG_USB_SISUSBVGA=m
+CONFIG_USB_SISUSBVGA_CON=y
+CONFIG_USB_LD=m
+CONFIG_USB_TRANCEVIBRATOR=m
+CONFIG_USB_IOWARRIOR=m
+CONFIG_USB_TEST=m
+# CONFIG_USB_EHSET_TEST_FIXTURE is not set
+CONFIG_USB_ISIGHTFW=m
+CONFIG_USB_YUREX=m
+CONFIG_USB_EZUSB_FX2=m
+# CONFIG_USB_HUB_USB251XB is not set
+CONFIG_USB_HSIC_USB3503=m
+CONFIG_USB_HSIC_USB4604=m
+# CONFIG_USB_LINK_LAYER_TEST is not set
+# CONFIG_USB_CHAOSKEY is not set
+CONFIG_USB_ATM=m
+CONFIG_USB_SPEEDTOUCH=m
+CONFIG_USB_CXACRU=m
+CONFIG_USB_UEAGLEATM=m
+CONFIG_USB_XUSBATM=m
+
+#
+# USB Physical Layer drivers
+#
+CONFIG_USB_PHY=y
+CONFIG_NOP_USB_XCEIV=m
+# CONFIG_USB_GPIO_VBUS is not set
+CONFIG_TAHVO_USB=m
+# CONFIG_TAHVO_USB_HOST_BY_DEFAULT is not set
+CONFIG_USB_ISP1301=m
+# end of USB Physical Layer drivers
+
+# CONFIG_USB_GADGET is not set
+CONFIG_TYPEC=m
+CONFIG_TYPEC_TCPM=m
+CONFIG_TYPEC_TCPCI=m
+CONFIG_TYPEC_RT1711H=m
+CONFIG_TYPEC_FUSB302=m
+CONFIG_TYPEC_WCOVE=m
+CONFIG_TYPEC_UCSI=m
+CONFIG_UCSI_CCG=m
+CONFIG_UCSI_ACPI=m
+# CONFIG_TYPEC_TPS6598X is not set
+
+#
+# USB Type-C Multiplexer/DeMultiplexer Switch support
+#
+# CONFIG_TYPEC_MUX_PI3USB30532 is not set
+# end of USB Type-C Multiplexer/DeMultiplexer Switch support
+
+#
+# USB Type-C Alternate Mode drivers
+#
+CONFIG_TYPEC_DP_ALTMODE=m
+CONFIG_TYPEC_NVIDIA_ALTMODE=m
+# end of USB Type-C Alternate Mode drivers
+
+CONFIG_USB_ROLE_SWITCH=m
+CONFIG_USB_ROLES_INTEL_XHCI=m
+CONFIG_MMC=m
+CONFIG_MMC_BLOCK=m
+CONFIG_MMC_BLOCK_MINORS=8
+CONFIG_SDIO_UART=m
+CONFIG_MMC_TEST=m
+
+#
+# MMC/SD/SDIO Host Controller Drivers
+#
+# CONFIG_MMC_DEBUG is not set
+CONFIG_MMC_SDHCI=m
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_PCI=m
+CONFIG_MMC_RICOH_MMC=y
+CONFIG_MMC_SDHCI_ACPI=m
+CONFIG_MMC_SDHCI_PLTFM=m
+CONFIG_MMC_SDHCI_F_SDH30=m
+CONFIG_MMC_WBSD=m
+CONFIG_MMC_ALCOR=m
+CONFIG_MMC_TIFM_SD=m
+CONFIG_MMC_SPI=m
+CONFIG_MMC_SDRICOH_CS=m
+CONFIG_MMC_CB710=m
+CONFIG_MMC_VIA_SDMMC=m
+CONFIG_MMC_VUB300=m
+CONFIG_MMC_USHC=m
+CONFIG_MMC_USDHI6ROL0=m
+CONFIG_MMC_REALTEK_PCI=m
+CONFIG_MMC_REALTEK_USB=m
+CONFIG_MMC_CQHCI=m
+CONFIG_MMC_TOSHIBA_PCI=m
+CONFIG_MMC_MTK=m
+CONFIG_MMC_SDHCI_XENON=m
+CONFIG_MEMSTICK=m
+# CONFIG_MEMSTICK_DEBUG is not set
+
+#
+# MemoryStick drivers
+#
+# CONFIG_MEMSTICK_UNSAFE_RESUME is not set
+CONFIG_MSPRO_BLOCK=m
+CONFIG_MS_BLOCK=m
+
+#
+# MemoryStick Host Controller Drivers
+#
+CONFIG_MEMSTICK_TIFM_MS=m
+CONFIG_MEMSTICK_JMICRON_38X=m
+CONFIG_MEMSTICK_R592=m
+CONFIG_MEMSTICK_REALTEK_PCI=m
+CONFIG_MEMSTICK_REALTEK_USB=m
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+# CONFIG_LEDS_CLASS_FLASH is not set
+# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
+
+#
+# LED drivers
+#
+CONFIG_LEDS_88PM860X=m
+# CONFIG_LEDS_APU is not set
+CONFIG_LEDS_LM3530=m
+# CONFIG_LEDS_LM3532 is not set
+CONFIG_LEDS_LM3642=m
+# CONFIG_LEDS_PCA9532 is not set
+CONFIG_LEDS_GPIO=m
+# CONFIG_LEDS_LP3944 is not set
+# CONFIG_LEDS_LP3952 is not set
+CONFIG_LEDS_LP55XX_COMMON=m
+CONFIG_LEDS_LP5521=m
+CONFIG_LEDS_LP5523=m
+CONFIG_LEDS_LP5562=m
+CONFIG_LEDS_LP8501=m
+CONFIG_LEDS_LP8788=m
+CONFIG_LEDS_CLEVO_MAIL=m
+# CONFIG_LEDS_PCA955X is not set
+CONFIG_LEDS_PCA963X=m
+CONFIG_LEDS_WM831X_STATUS=m
+CONFIG_LEDS_WM8350=m
+CONFIG_LEDS_DA903X=m
+CONFIG_LEDS_DA9052=m
+CONFIG_LEDS_DAC124S085=m
+CONFIG_LEDS_PWM=m
+CONFIG_LEDS_REGULATOR=m
+# CONFIG_LEDS_BD2802 is not set
+CONFIG_LEDS_INTEL_SS4200=m
+CONFIG_LEDS_ADP5520=m
+CONFIG_LEDS_MC13783=m
+CONFIG_LEDS_TCA6507=m
+CONFIG_LEDS_TLC591XX=m
+CONFIG_LEDS_MAX8997=m
+CONFIG_LEDS_LM355x=m
+CONFIG_LEDS_MENF21BMC=m
+
+#
+# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
+#
+CONFIG_LEDS_BLINKM=m
+CONFIG_LEDS_MLXCPLD=m
+CONFIG_LEDS_MLXREG=m
+CONFIG_LEDS_USER=m
+# CONFIG_LEDS_NIC78BX is not set
+# CONFIG_LEDS_TI_LMU_COMMON is not set
+
+#
+# LED Triggers
+#
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=m
+CONFIG_LEDS_TRIGGER_ONESHOT=m
+CONFIG_LEDS_TRIGGER_DISK=y
+# CONFIG_LEDS_TRIGGER_MTD is not set
+CONFIG_LEDS_TRIGGER_HEARTBEAT=m
+CONFIG_LEDS_TRIGGER_BACKLIGHT=m
+CONFIG_LEDS_TRIGGER_CPU=y
+# CONFIG_LEDS_TRIGGER_ACTIVITY is not set
+CONFIG_LEDS_TRIGGER_GPIO=m
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
+
+#
+# iptables trigger is under Netfilter config (LED target)
+#
+CONFIG_LEDS_TRIGGER_TRANSIENT=m
+CONFIG_LEDS_TRIGGER_CAMERA=m
+# CONFIG_LEDS_TRIGGER_PANIC is not set
+CONFIG_LEDS_TRIGGER_NETDEV=m
+CONFIG_LEDS_TRIGGER_PATTERN=m
+CONFIG_LEDS_TRIGGER_AUDIO=m
+CONFIG_ACCESSIBILITY=y
+CONFIG_A11Y_BRAILLE_CONSOLE=y
+CONFIG_INFINIBAND=m
+CONFIG_INFINIBAND_USER_MAD=m
+CONFIG_INFINIBAND_USER_ACCESS=m
+# CONFIG_INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI is not set
+CONFIG_INFINIBAND_USER_MEM=y
+CONFIG_INFINIBAND_ON_DEMAND_PAGING=y
+CONFIG_INFINIBAND_ADDR_TRANS=y
+CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS=y
+CONFIG_INFINIBAND_MTHCA=m
+# CONFIG_INFINIBAND_MTHCA_DEBUG is not set
+CONFIG_INFINIBAND_QIB=m
+CONFIG_INFINIBAND_QIB_DCA=y
+CONFIG_INFINIBAND_CXGB3=m
+CONFIG_INFINIBAND_CXGB4=m
+CONFIG_INFINIBAND_EFA=m
+CONFIG_INFINIBAND_I40IW=m
+CONFIG_MLX4_INFINIBAND=m
+CONFIG_MLX5_INFINIBAND=m
+CONFIG_INFINIBAND_OCRDMA=m
+CONFIG_INFINIBAND_VMWARE_PVRDMA=m
+CONFIG_INFINIBAND_USNIC=m
+CONFIG_INFINIBAND_BNXT_RE=m
+CONFIG_INFINIBAND_HFI1=m
+# CONFIG_HFI1_DEBUG_SDMA_ORDER is not set
+# CONFIG_SDMA_VERBOSITY is not set
+CONFIG_INFINIBAND_QEDR=m
+CONFIG_INFINIBAND_RDMAVT=m
+CONFIG_RDMA_RXE=m
+CONFIG_RDMA_SIW=m
+CONFIG_INFINIBAND_IPOIB=m
+# CONFIG_INFINIBAND_IPOIB_CM is not set
+# CONFIG_INFINIBAND_IPOIB_DEBUG is not set
+CONFIG_INFINIBAND_SRP=m
+CONFIG_INFINIBAND_SRPT=m
+CONFIG_INFINIBAND_ISER=m
+CONFIG_INFINIBAND_ISERT=m
+CONFIG_INFINIBAND_OPA_VNIC=m
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EDAC=y
+CONFIG_EDAC_LEGACY_SYSFS=y
+# CONFIG_EDAC_DEBUG is not set
+CONFIG_EDAC_DECODE_MCE=y
+# CONFIG_EDAC_GHES is not set
+CONFIG_EDAC_AMD64=m
+# CONFIG_EDAC_AMD64_ERROR_INJECTION is not set
+CONFIG_EDAC_E752X=m
+CONFIG_EDAC_I82975X=m
+CONFIG_EDAC_I3000=m
+CONFIG_EDAC_I3200=m
+CONFIG_EDAC_IE31200=m
+CONFIG_EDAC_X38=m
+CONFIG_EDAC_I5400=m
+CONFIG_EDAC_I7CORE=m
+CONFIG_EDAC_I5000=m
+CONFIG_EDAC_I5100=m
+CONFIG_EDAC_I7300=m
+CONFIG_EDAC_SBRIDGE=m
+CONFIG_EDAC_SKX=m
+CONFIG_EDAC_I10NM=m
+CONFIG_EDAC_PND2=m
+CONFIG_RTC_LIB=y
+CONFIG_RTC_MC146818_LIB=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+CONFIG_RTC_SYSTOHC=y
+CONFIG_RTC_SYSTOHC_DEVICE="rtc0"
+# CONFIG_RTC_DEBUG is not set
+CONFIG_RTC_NVMEM=y
+
+#
+# RTC interfaces
+#
+CONFIG_RTC_INTF_SYSFS=y
+# CONFIG_RTC_INTF_PROC is not set
+CONFIG_RTC_INTF_DEV=y
+CONFIG_RTC_INTF_DEV_UIE_EMUL=y
+# CONFIG_RTC_DRV_TEST is not set
+
+#
+# I2C RTC drivers
+#
+CONFIG_RTC_DRV_88PM860X=m
+CONFIG_RTC_DRV_88PM80X=m
+# CONFIG_RTC_DRV_ABB5ZES3 is not set
+# CONFIG_RTC_DRV_ABEOZ9 is not set
+# CONFIG_RTC_DRV_ABX80X is not set
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1374 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+CONFIG_RTC_DRV_LP8788=m
+# CONFIG_RTC_DRV_MAX6900 is not set
+CONFIG_RTC_DRV_MAX8907=m
+CONFIG_RTC_DRV_MAX8925=m
+CONFIG_RTC_DRV_MAX8998=m
+CONFIG_RTC_DRV_MAX8997=m
+# CONFIG_RTC_DRV_RS5C372 is not set
+CONFIG_RTC_DRV_ISL1208=m
+CONFIG_RTC_DRV_ISL12022=m
+# CONFIG_RTC_DRV_X1205 is not set
+CONFIG_RTC_DRV_PCF8523=m
+CONFIG_RTC_DRV_PCF85063=m
+# CONFIG_RTC_DRV_PCF85363 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
+CONFIG_RTC_DRV_BQ32K=m
+CONFIG_RTC_DRV_PALMAS=m
+CONFIG_RTC_DRV_TPS6586X=m
+CONFIG_RTC_DRV_TPS65910=m
+CONFIG_RTC_DRV_TPS80031=m
+CONFIG_RTC_DRV_RC5T583=m
+# CONFIG_RTC_DRV_S35390A is not set
+# CONFIG_RTC_DRV_FM3130 is not set
+CONFIG_RTC_DRV_RX8010=m
+# CONFIG_RTC_DRV_RX8581 is not set
+# CONFIG_RTC_DRV_RX8025 is not set
+# CONFIG_RTC_DRV_EM3027 is not set
+# CONFIG_RTC_DRV_RV3028 is not set
+CONFIG_RTC_DRV_RV8803=m
+CONFIG_RTC_DRV_S5M=m
+# CONFIG_RTC_DRV_SD3078 is not set
+
+#
+# SPI RTC drivers
+#
+CONFIG_RTC_DRV_M41T93=m
+CONFIG_RTC_DRV_M41T94=m
+CONFIG_RTC_DRV_DS1302=m
+CONFIG_RTC_DRV_DS1305=m
+CONFIG_RTC_DRV_DS1343=m
+CONFIG_RTC_DRV_DS1347=m
+CONFIG_RTC_DRV_DS1390=m
+CONFIG_RTC_DRV_MAX6916=m
+CONFIG_RTC_DRV_R9701=m
+CONFIG_RTC_DRV_RX4581=m
+CONFIG_RTC_DRV_RX6110=m
+CONFIG_RTC_DRV_RS5C348=m
+CONFIG_RTC_DRV_MAX6902=m
+CONFIG_RTC_DRV_PCF2123=m
+CONFIG_RTC_DRV_MCP795=m
+CONFIG_RTC_I2C_AND_SPI=y
+
+#
+# SPI and I2C RTC drivers
+#
+# CONFIG_RTC_DRV_DS3232 is not set
+CONFIG_RTC_DRV_PCF2127=m
+# CONFIG_RTC_DRV_RV3029C2 is not set
+
+#
+# Platform RTC drivers
+#
+CONFIG_RTC_DRV_CMOS=y
+# CONFIG_RTC_DRV_DS1286 is not set
+# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1685_FAMILY is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_DS2404 is not set
+CONFIG_RTC_DRV_DA9052=m
+CONFIG_RTC_DRV_DA9055=m
+CONFIG_RTC_DRV_DA9063=m
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_M48T35 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_MSM6242 is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
+# CONFIG_RTC_DRV_RP5C01 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+CONFIG_RTC_DRV_WM831X=m
+CONFIG_RTC_DRV_WM8350=m
+CONFIG_RTC_DRV_CROS_EC=m
+
+#
+# on-CPU RTC drivers
+#
+# CONFIG_RTC_DRV_FTRTC010 is not set
+CONFIG_RTC_DRV_PCAP=m
+CONFIG_RTC_DRV_MC13XXX=m
+
+#
+# HID Sensor RTC drivers
+#
+CONFIG_RTC_DRV_HID_SENSOR_TIME=m
+CONFIG_RTC_DRV_WILCO_EC=m
+CONFIG_DMADEVICES=y
+# CONFIG_DMADEVICES_DEBUG is not set
+
+#
+# DMA Devices
+#
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_VIRTUAL_CHANNELS=m
+CONFIG_DMA_ACPI=y
+CONFIG_ALTERA_MSGDMA=m
+CONFIG_INTEL_IDMA64=m
+CONFIG_INTEL_IOATDMA=m
+CONFIG_INTEL_MIC_X100_DMA=m
+CONFIG_QCOM_HIDMA_MGMT=m
+CONFIG_QCOM_HIDMA=m
+CONFIG_DW_DMAC_CORE=m
+CONFIG_DW_DMAC=m
+CONFIG_DW_DMAC_PCI=m
+CONFIG_DW_EDMA=m
+CONFIG_DW_EDMA_PCIE=m
+CONFIG_HSU_DMA=m
+
+#
+# DMA Clients
+#
+# CONFIG_ASYNC_TX_DMA is not set
+CONFIG_DMATEST=m
+CONFIG_DMA_ENGINE_RAID=y
+
+#
+# DMABUF options
+#
+CONFIG_SYNC_FILE=y
+# CONFIG_SW_SYNC is not set
+CONFIG_UDMABUF=y
+# CONFIG_DMABUF_SELFTESTS is not set
+# end of DMABUF options
+
+CONFIG_DCA=m
+CONFIG_AUXDISPLAY=y
+# CONFIG_HD44780 is not set
+CONFIG_KS0108=m
+CONFIG_KS0108_PORT=0x378
+CONFIG_KS0108_DELAY=2
+CONFIG_CFAG12864B=m
+CONFIG_CFAG12864B_RATE=20
+# CONFIG_IMG_ASCII_LCD is not set
+CONFIG_PARPORT_PANEL=m
+CONFIG_PANEL_PARPORT=0
+CONFIG_PANEL_PROFILE=5
+# CONFIG_PANEL_CHANGE_MESSAGE is not set
+# CONFIG_CHARLCD_BL_OFF is not set
+# CONFIG_CHARLCD_BL_ON is not set
+CONFIG_CHARLCD_BL_FLASH=y
+CONFIG_PANEL=m
+CONFIG_CHARLCD=m
+CONFIG_UIO=m
+CONFIG_UIO_CIF=m
+# CONFIG_UIO_PDRV_GENIRQ is not set
+CONFIG_UIO_DMEM_GENIRQ=m
+CONFIG_UIO_AEC=m
+CONFIG_UIO_SERCOS3=m
+CONFIG_UIO_PCI_GENERIC=m
+CONFIG_UIO_NETX=m
+CONFIG_UIO_PRUSS=m
+CONFIG_UIO_MF624=m
+CONFIG_UIO_HV_GENERIC=m
+CONFIG_VFIO_IOMMU_TYPE1=m
+CONFIG_VFIO_VIRQFD=m
+CONFIG_VFIO=m
+# CONFIG_VFIO_NOIOMMU is not set
+CONFIG_VFIO_PCI=m
+CONFIG_VFIO_PCI_VGA=y
+CONFIG_VFIO_PCI_MMAP=y
+CONFIG_VFIO_PCI_INTX=y
+CONFIG_VFIO_PCI_IGD=y
+CONFIG_VFIO_MDEV=m
+CONFIG_VFIO_MDEV_DEVICE=m
+CONFIG_IRQ_BYPASS_MANAGER=m
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VBOXGUEST=m
+CONFIG_VIRTIO=m
+CONFIG_VIRTIO_MENU=y
+CONFIG_VIRTIO_PCI=m
+CONFIG_VIRTIO_PCI_LEGACY=y
+CONFIG_VIRTIO_PMEM=m
+CONFIG_VIRTIO_BALLOON=m
+CONFIG_VIRTIO_INPUT=m
+CONFIG_VIRTIO_MMIO=m
+# CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set
+
+#
+# Microsoft Hyper-V guest support
+#
+CONFIG_HYPERV=m
+CONFIG_HYPERV_TIMER=y
+CONFIG_HYPERV_UTILS=m
+CONFIG_HYPERV_BALLOON=m
+# end of Microsoft Hyper-V guest support
+
+#
+# Xen driver support
+#
+CONFIG_XEN_BALLOON=y
+# CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set
+CONFIG_XEN_SCRUB_PAGES_DEFAULT=y
+CONFIG_XEN_DEV_EVTCHN=m
+CONFIG_XEN_BACKEND=y
+CONFIG_XENFS=m
+CONFIG_XEN_COMPAT_XENFS=y
+CONFIG_XEN_SYS_HYPERVISOR=y
+CONFIG_XEN_XENBUS_FRONTEND=y
+CONFIG_XEN_GNTDEV=m
+CONFIG_XEN_GRANT_DEV_ALLOC=m
+# CONFIG_XEN_GRANT_DMA_ALLOC is not set
+CONFIG_SWIOTLB_XEN=y
+CONFIG_XEN_PCIDEV_BACKEND=m
+# CONFIG_XEN_PVCALLS_FRONTEND is not set
+# CONFIG_XEN_PVCALLS_BACKEND is not set
+CONFIG_XEN_SCSI_BACKEND=m
+CONFIG_XEN_PRIVCMD=m
+CONFIG_XEN_ACPI_PROCESSOR=m
+# CONFIG_XEN_MCE_LOG is not set
+CONFIG_XEN_HAVE_PVMMU=y
+CONFIG_XEN_EFI=y
+CONFIG_XEN_AUTO_XLATE=y
+CONFIG_XEN_ACPI=y
+CONFIG_XEN_SYMS=y
+CONFIG_XEN_HAVE_VPMU=y
+CONFIG_XEN_FRONT_PGDIR_SHBUF=m
+# end of Xen driver support
+
+# CONFIG_GREYBUS is not set
+CONFIG_STAGING=y
+CONFIG_PRISM2_USB=m
+CONFIG_COMEDI=m
+# CONFIG_COMEDI_DEBUG is not set
+CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB=2048
+CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB=20480
+CONFIG_COMEDI_MISC_DRIVERS=y
+CONFIG_COMEDI_BOND=m
+CONFIG_COMEDI_TEST=m
+CONFIG_COMEDI_PARPORT=m
+CONFIG_COMEDI_ISA_DRIVERS=y
+CONFIG_COMEDI_PCL711=m
+CONFIG_COMEDI_PCL724=m
+CONFIG_COMEDI_PCL726=m
+CONFIG_COMEDI_PCL730=m
+CONFIG_COMEDI_PCL812=m
+CONFIG_COMEDI_PCL816=m
+CONFIG_COMEDI_PCL818=m
+CONFIG_COMEDI_PCM3724=m
+CONFIG_COMEDI_AMPLC_DIO200_ISA=m
+CONFIG_COMEDI_AMPLC_PC236_ISA=m
+CONFIG_COMEDI_AMPLC_PC263_ISA=m
+CONFIG_COMEDI_RTI800=m
+CONFIG_COMEDI_RTI802=m
+# CONFIG_COMEDI_DAC02 is not set
+CONFIG_COMEDI_DAS16M1=m
+CONFIG_COMEDI_DAS08_ISA=m
+CONFIG_COMEDI_DAS16=m
+CONFIG_COMEDI_DAS800=m
+CONFIG_COMEDI_DAS1800=m
+CONFIG_COMEDI_DAS6402=m
+CONFIG_COMEDI_DT2801=m
+CONFIG_COMEDI_DT2811=m
+CONFIG_COMEDI_DT2814=m
+CONFIG_COMEDI_DT2815=m
+CONFIG_COMEDI_DT2817=m
+CONFIG_COMEDI_DT282X=m
+CONFIG_COMEDI_DMM32AT=m
+CONFIG_COMEDI_FL512=m
+CONFIG_COMEDI_AIO_AIO12_8=m
+CONFIG_COMEDI_AIO_IIRO_16=m
+CONFIG_COMEDI_II_PCI20KC=m
+CONFIG_COMEDI_C6XDIGIO=m
+CONFIG_COMEDI_MPC624=m
+CONFIG_COMEDI_ADQ12B=m
+CONFIG_COMEDI_NI_AT_A2150=m
+CONFIG_COMEDI_NI_AT_AO=m
+CONFIG_COMEDI_NI_ATMIO=m
+CONFIG_COMEDI_NI_ATMIO16D=m
+CONFIG_COMEDI_NI_LABPC_ISA=m
+CONFIG_COMEDI_PCMAD=m
+CONFIG_COMEDI_PCMDA12=m
+CONFIG_COMEDI_PCMMIO=m
+CONFIG_COMEDI_PCMUIO=m
+CONFIG_COMEDI_MULTIQ3=m
+CONFIG_COMEDI_S526=m
+CONFIG_COMEDI_PCI_DRIVERS=m
+CONFIG_COMEDI_8255_PCI=m
+CONFIG_COMEDI_ADDI_WATCHDOG=m
+CONFIG_COMEDI_ADDI_APCI_1032=m
+CONFIG_COMEDI_ADDI_APCI_1500=m
+CONFIG_COMEDI_ADDI_APCI_1516=m
+CONFIG_COMEDI_ADDI_APCI_1564=m
+CONFIG_COMEDI_ADDI_APCI_16XX=m
+CONFIG_COMEDI_ADDI_APCI_2032=m
+CONFIG_COMEDI_ADDI_APCI_2200=m
+CONFIG_COMEDI_ADDI_APCI_3120=m
+CONFIG_COMEDI_ADDI_APCI_3501=m
+CONFIG_COMEDI_ADDI_APCI_3XXX=m
+CONFIG_COMEDI_ADL_PCI6208=m
+CONFIG_COMEDI_ADL_PCI7X3X=m
+CONFIG_COMEDI_ADL_PCI8164=m
+CONFIG_COMEDI_ADL_PCI9111=m
+CONFIG_COMEDI_ADL_PCI9118=m
+CONFIG_COMEDI_ADV_PCI1710=m
+CONFIG_COMEDI_ADV_PCI1720=m
+CONFIG_COMEDI_ADV_PCI1723=m
+CONFIG_COMEDI_ADV_PCI1724=m
+CONFIG_COMEDI_ADV_PCI1760=m
+CONFIG_COMEDI_ADV_PCI_DIO=m
+CONFIG_COMEDI_AMPLC_DIO200_PCI=m
+CONFIG_COMEDI_AMPLC_PC236_PCI=m
+CONFIG_COMEDI_AMPLC_PC263_PCI=m
+CONFIG_COMEDI_AMPLC_PCI224=m
+CONFIG_COMEDI_AMPLC_PCI230=m
+CONFIG_COMEDI_CONTEC_PCI_DIO=m
+CONFIG_COMEDI_DAS08_PCI=m
+CONFIG_COMEDI_DT3000=m
+CONFIG_COMEDI_DYNA_PCI10XX=m
+CONFIG_COMEDI_GSC_HPDI=m
+CONFIG_COMEDI_MF6X4=m
+CONFIG_COMEDI_ICP_MULTI=m
+CONFIG_COMEDI_DAQBOARD2000=m
+CONFIG_COMEDI_JR3_PCI=m
+CONFIG_COMEDI_KE_COUNTER=m
+CONFIG_COMEDI_CB_PCIDAS64=m
+CONFIG_COMEDI_CB_PCIDAS=m
+CONFIG_COMEDI_CB_PCIDDA=m
+CONFIG_COMEDI_CB_PCIMDAS=m
+CONFIG_COMEDI_CB_PCIMDDA=m
+CONFIG_COMEDI_ME4000=m
+CONFIG_COMEDI_ME_DAQ=m
+CONFIG_COMEDI_NI_6527=m
+CONFIG_COMEDI_NI_65XX=m
+CONFIG_COMEDI_NI_660X=m
+CONFIG_COMEDI_NI_670X=m
+CONFIG_COMEDI_NI_LABPC_PCI=m
+CONFIG_COMEDI_NI_PCIDIO=m
+CONFIG_COMEDI_NI_PCIMIO=m
+CONFIG_COMEDI_RTD520=m
+CONFIG_COMEDI_S626=m
+CONFIG_COMEDI_MITE=m
+CONFIG_COMEDI_NI_TIOCMD=m
+CONFIG_COMEDI_PCMCIA_DRIVERS=m
+CONFIG_COMEDI_CB_DAS16_CS=m
+CONFIG_COMEDI_DAS08_CS=m
+CONFIG_COMEDI_NI_DAQ_700_CS=m
+CONFIG_COMEDI_NI_DAQ_DIO24_CS=m
+CONFIG_COMEDI_NI_LABPC_CS=m
+CONFIG_COMEDI_NI_MIO_CS=m
+CONFIG_COMEDI_QUATECH_DAQP_CS=m
+CONFIG_COMEDI_USB_DRIVERS=m
+CONFIG_COMEDI_DT9812=m
+CONFIG_COMEDI_NI_USB6501=m
+CONFIG_COMEDI_USBDUX=m
+CONFIG_COMEDI_USBDUXFAST=m
+CONFIG_COMEDI_USBDUXSIGMA=m
+CONFIG_COMEDI_VMK80XX=m
+CONFIG_COMEDI_8254=m
+CONFIG_COMEDI_8255=m
+CONFIG_COMEDI_8255_SA=m
+CONFIG_COMEDI_KCOMEDILIB=m
+CONFIG_COMEDI_AMPLC_DIO200=m
+CONFIG_COMEDI_AMPLC_PC236=m
+CONFIG_COMEDI_DAS08=m
+CONFIG_COMEDI_ISADMA=m
+CONFIG_COMEDI_NI_LABPC=m
+CONFIG_COMEDI_NI_LABPC_ISADMA=m
+CONFIG_COMEDI_NI_TIO=m
+CONFIG_COMEDI_NI_ROUTING=m
+CONFIG_RTL8192U=m
+CONFIG_RTLLIB=m
+CONFIG_RTLLIB_CRYPTO_CCMP=m
+CONFIG_RTLLIB_CRYPTO_TKIP=m
+CONFIG_RTLLIB_CRYPTO_WEP=m
+CONFIG_RTL8192E=m
+CONFIG_RTL8723BS=m
+CONFIG_R8712U=m
+CONFIG_R8188EU=m
+CONFIG_88EU_AP_MODE=y
+CONFIG_RTS5208=m
+CONFIG_VT6655=m
+CONFIG_VT6656=m
+
+#
+# IIO staging drivers
+#
+
+#
+# Accelerometers
+#
+CONFIG_ADIS16203=m
+CONFIG_ADIS16240=m
+# end of Accelerometers
+
+#
+# Analog to digital converters
+#
+CONFIG_AD7816=m
+CONFIG_AD7192=m
+CONFIG_AD7280=m
+# end of Analog to digital converters
+
+#
+# Analog digital bi-direction converters
+#
+CONFIG_ADT7316=m
+CONFIG_ADT7316_SPI=m
+CONFIG_ADT7316_I2C=m
+# end of Analog digital bi-direction converters
+
+#
+# Capacitance to digital converters
+#
+CONFIG_AD7150=m
+CONFIG_AD7746=m
+# end of Capacitance to digital converters
+
+#
+# Direct Digital Synthesis
+#
+CONFIG_AD9832=m
+CONFIG_AD9834=m
+# end of Direct Digital Synthesis
+
+#
+# Network Analyzer, Impedance Converters
+#
+CONFIG_AD5933=m
+# end of Network Analyzer, Impedance Converters
+
+#
+# Active energy metering IC
+#
+CONFIG_ADE7854=m
+CONFIG_ADE7854_I2C=m
+CONFIG_ADE7854_SPI=m
+# end of Active energy metering IC
+
+#
+# Resolver to digital converters
+#
+CONFIG_AD2S1210=m
+# end of Resolver to digital converters
+# end of IIO staging drivers
+
+# CONFIG_FB_SM750 is not set
+
+#
+# Speakup console speech
+#
+CONFIG_SPEAKUP=m
+CONFIG_SPEAKUP_SYNTH_ACNTSA=m
+CONFIG_SPEAKUP_SYNTH_APOLLO=m
+CONFIG_SPEAKUP_SYNTH_AUDPTR=m
+CONFIG_SPEAKUP_SYNTH_BNS=m
+CONFIG_SPEAKUP_SYNTH_DECTLK=m
+CONFIG_SPEAKUP_SYNTH_DECEXT=m
+CONFIG_SPEAKUP_SYNTH_LTLK=m
+CONFIG_SPEAKUP_SYNTH_SOFT=m
+CONFIG_SPEAKUP_SYNTH_SPKOUT=m
+CONFIG_SPEAKUP_SYNTH_TXPRT=m
+CONFIG_SPEAKUP_SYNTH_DUMMY=m
+# end of Speakup console speech
+
+CONFIG_STAGING_MEDIA=y
+
+#
+# soc_camera sensor drivers
+#
+
+#
+# Android
+#
+# end of Android
+
+CONFIG_LTE_GDM724X=m
+CONFIG_FIREWIRE_SERIAL=m
+CONFIG_FWTTY_MAX_TOTAL_PORTS=64
+CONFIG_FWTTY_MAX_CARD_PORTS=32
+# CONFIG_GS_FPGABOOT is not set
+CONFIG_UNISYSSPAR=y
+CONFIG_UNISYS_VISORNIC=m
+CONFIG_UNISYS_VISORINPUT=m
+CONFIG_UNISYS_VISORHBA=m
+CONFIG_WILC1000=m
+CONFIG_WILC1000_SDIO=m
+# CONFIG_WILC1000_SPI is not set
+# CONFIG_WILC1000_HW_OOB_INTR is not set
+CONFIG_MOST=m
+CONFIG_MOST_CDEV=m
+CONFIG_MOST_NET=m
+CONFIG_MOST_SOUND=m
+CONFIG_MOST_VIDEO=m
+CONFIG_MOST_I2C=m
+CONFIG_MOST_USB=m
+CONFIG_KS7010=m
+# CONFIG_PI433 is not set
+
+#
+# Gasket devices
+#
+# CONFIG_STAGING_GASKET_FRAMEWORK is not set
+# end of Gasket devices
+
+CONFIG_FIELDBUS_DEV=m
+# CONFIG_KPC2000 is not set
+
+#
+# ISDN CAPI drivers
+#
+CONFIG_CAPI_AVM=y
+CONFIG_ISDN_DRV_AVMB1_B1PCI=m
+# CONFIG_ISDN_DRV_AVMB1_B1PCIV4 is not set
+CONFIG_ISDN_DRV_AVMB1_B1PCMCIA=m
+CONFIG_ISDN_DRV_AVMB1_AVM_CS=m
+CONFIG_ISDN_DRV_AVMB1_T1PCI=m
+CONFIG_ISDN_DRV_AVMB1_C4=m
+CONFIG_ISDN_DRV_GIGASET=m
+CONFIG_GIGASET_CAPI=y
+CONFIG_GIGASET_BASE=m
+CONFIG_GIGASET_M105=m
+CONFIG_GIGASET_M101=m
+# CONFIG_GIGASET_DEBUG is not set
+CONFIG_HYSDN=m
+CONFIG_HYSDN_CAPI=y
+# end of ISDN CAPI drivers
+
+CONFIG_USB_WUSB=m
+CONFIG_USB_WUSB_CBAF=m
+# CONFIG_USB_WUSB_CBAF_DEBUG is not set
+CONFIG_USB_WHCI_HCD=m
+CONFIG_USB_HWA_HCD=m
+CONFIG_UWB=m
+CONFIG_UWB_HWA=m
+CONFIG_UWB_WHCI=m
+CONFIG_UWB_I1480U=m
+CONFIG_EXFAT_FS=m
+CONFIG_EXFAT_DONT_MOUNT_VFAT=y
+CONFIG_EXFAT_DISCARD=y
+# CONFIG_EXFAT_DELAYED_SYNC is not set
+# CONFIG_EXFAT_KERNEL_DEBUG is not set
+# CONFIG_EXFAT_DEBUG_MSG is not set
+CONFIG_EXFAT_DEFAULT_CODEPAGE=437
+CONFIG_EXFAT_DEFAULT_IOCHARSET="utf8"
+CONFIG_QLGE=m
+CONFIG_VBOXSF_FS=m
+CONFIG_X86_PLATFORM_DEVICES=y
+CONFIG_ACER_WMI=m
+CONFIG_ACER_WIRELESS=m
+CONFIG_ACERHDF=m
+CONFIG_ALIENWARE_WMI=m
+CONFIG_ASUS_LAPTOP=m
+CONFIG_DCDBAS=m
+CONFIG_DELL_SMBIOS=m
+CONFIG_DELL_SMBIOS_WMI=y
+CONFIG_DELL_SMBIOS_SMM=y
+CONFIG_DELL_LAPTOP=m
+CONFIG_DELL_WMI=m
+CONFIG_DELL_WMI_DESCRIPTOR=m
+CONFIG_DELL_WMI_AIO=m
+CONFIG_DELL_WMI_LED=m
+CONFIG_DELL_SMO8800=m
+CONFIG_DELL_RBTN=m
+# CONFIG_DELL_RBU is not set
+CONFIG_FUJITSU_LAPTOP=m
+CONFIG_FUJITSU_TABLET=m
+CONFIG_AMILO_RFKILL=m
+CONFIG_GPD_POCKET_FAN=m
+CONFIG_HP_ACCEL=m
+CONFIG_HP_WIRELESS=m
+CONFIG_HP_WMI=m
+CONFIG_LG_LAPTOP=m
+CONFIG_MSI_LAPTOP=m
+CONFIG_PANASONIC_LAPTOP=m
+CONFIG_COMPAL_LAPTOP=m
+CONFIG_SONY_LAPTOP=m
+CONFIG_SONYPI_COMPAT=y
+CONFIG_IDEAPAD_LAPTOP=m
+CONFIG_SURFACE3_WMI=m
+CONFIG_THINKPAD_ACPI=m
+CONFIG_THINKPAD_ACPI_ALSA_SUPPORT=y
+# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
+# CONFIG_THINKPAD_ACPI_DEBUG is not set
+# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
+CONFIG_THINKPAD_ACPI_VIDEO=y
+CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
+CONFIG_SENSORS_HDAPS=m
+CONFIG_INTEL_MENLOW=m
+CONFIG_EEEPC_LAPTOP=m
+CONFIG_ASUS_WMI=m
+CONFIG_ASUS_NB_WMI=m
+CONFIG_EEEPC_WMI=m
+CONFIG_ASUS_WIRELESS=m
+CONFIG_ACPI_WMI=m
+CONFIG_WMI_BMOF=m
+CONFIG_INTEL_WMI_THUNDERBOLT=m
+CONFIG_XIAOMI_WMI=m
+CONFIG_MSI_WMI=m
+CONFIG_PEAQ_WMI=m
+CONFIG_TOPSTAR_LAPTOP=m
+CONFIG_ACPI_TOSHIBA=m
+CONFIG_TOSHIBA_BT_RFKILL=m
+CONFIG_TOSHIBA_HAPS=m
+CONFIG_TOSHIBA_WMI=m
+CONFIG_ACPI_CMPC=m
+CONFIG_INTEL_INT0002_VGPIO=m
+CONFIG_INTEL_HID_EVENT=m
+CONFIG_INTEL_VBTN=m
+CONFIG_INTEL_IPS=m
+CONFIG_INTEL_PMC_CORE=y
+CONFIG_IBM_RTL=m
+CONFIG_SAMSUNG_LAPTOP=m
+CONFIG_MXM_WMI=m
+CONFIG_INTEL_OAKTRAIL=m
+CONFIG_SAMSUNG_Q10=m
+CONFIG_APPLE_GMUX=m
+CONFIG_INTEL_RST=m
+CONFIG_INTEL_SMARTCONNECT=m
+CONFIG_INTEL_PMC_IPC=m
+CONFIG_INTEL_BXTWC_PMIC_TMU=m
+CONFIG_SURFACE_PRO3_BUTTON=m
+CONFIG_SURFACE_3_BUTTON=m
+CONFIG_INTEL_PUNIT_IPC=m
+CONFIG_INTEL_TELEMETRY=m
+CONFIG_MLX_PLATFORM=m
+CONFIG_INTEL_TURBO_MAX_3=y
+CONFIG_TOUCHSCREEN_DMI=y
+CONFIG_INTEL_CHTDC_TI_PWRBTN=m
+CONFIG_I2C_MULTI_INSTANTIATE=m
+CONFIG_INTEL_ATOMISP2_PM=m
+CONFIG_HUAWEI_WMI=m
+# CONFIG_PCENGINES_APU2 is not set
+
+#
+# Intel Speed Select Technology interface support
+#
+CONFIG_INTEL_SPEED_SELECT_INTERFACE=m
+# end of Intel Speed Select Technology interface support
+
+CONFIG_PMC_ATOM=y
+CONFIG_MFD_CROS_EC=m
+CONFIG_CHROME_PLATFORMS=y
+CONFIG_CHROMEOS_LAPTOP=m
+CONFIG_CHROMEOS_PSTORE=m
+CONFIG_CHROMEOS_TBMC=m
+CONFIG_CROS_EC=m
+CONFIG_CROS_EC_I2C=m
+CONFIG_CROS_EC_ISHTP=m
+CONFIG_CROS_EC_SPI=m
+CONFIG_CROS_EC_LPC=m
+CONFIG_CROS_EC_PROTO=y
+CONFIG_CROS_KBD_LED_BACKLIGHT=m
+CONFIG_CROS_EC_CHARDEV=m
+CONFIG_CROS_EC_LIGHTBAR=m
+CONFIG_CROS_EC_DEBUGFS=m
+CONFIG_CROS_EC_SYSFS=m
+CONFIG_CROS_USBPD_LOGGER=m
+CONFIG_WILCO_EC=m
+CONFIG_WILCO_EC_DEBUGFS=m
+CONFIG_WILCO_EC_EVENTS=m
+CONFIG_WILCO_EC_TELEMETRY=m
+CONFIG_MELLANOX_PLATFORM=y
+CONFIG_MLXREG_HOTPLUG=m
+CONFIG_MLXREG_IO=m
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_COMMON_CLK=y
+
+#
+# Common Clock Framework
+#
+CONFIG_COMMON_CLK_WM831X=m
+# CONFIG_COMMON_CLK_MAX9485 is not set
+# CONFIG_COMMON_CLK_SI5341 is not set
+CONFIG_COMMON_CLK_SI5351=m
+# CONFIG_COMMON_CLK_SI544 is not set
+# CONFIG_COMMON_CLK_CDCE706 is not set
+CONFIG_COMMON_CLK_CS2000_CP=m
+CONFIG_COMMON_CLK_S2MPS11=m
+CONFIG_CLK_TWL6040=m
+CONFIG_COMMON_CLK_PALMAS=m
+CONFIG_COMMON_CLK_PWM=m
+# end of Common Clock Framework
+
+# CONFIG_HWSPINLOCK is not set
+
+#
+# Clock Source drivers
+#
+CONFIG_CLKEVT_I8253=y
+CONFIG_I8253_LOCK=y
+CONFIG_CLKBLD_I8253=y
+# end of Clock Source drivers
+
+CONFIG_MAILBOX=y
+CONFIG_PCC=y
+CONFIG_ALTERA_MBOX=m
+CONFIG_IOMMU_IOVA=y
+CONFIG_IOMMU_API=y
+CONFIG_IOMMU_SUPPORT=y
+
+#
+# Generic IOMMU Pagetable Support
+#
+# end of Generic IOMMU Pagetable Support
+
+# CONFIG_IOMMU_DEBUGFS is not set
+# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
+CONFIG_AMD_IOMMU=y
+CONFIG_AMD_IOMMU_V2=m
+CONFIG_DMAR_TABLE=y
+CONFIG_INTEL_IOMMU=y
+# CONFIG_INTEL_IOMMU_SVM is not set
+# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
+CONFIG_INTEL_IOMMU_FLOPPY_WA=y
+CONFIG_IRQ_REMAP=y
+CONFIG_HYPERV_IOMMU=y
+
+#
+# Remoteproc drivers
+#
+# CONFIG_REMOTEPROC is not set
+# end of Remoteproc drivers
+
+#
+# Rpmsg drivers
+#
+CONFIG_RPMSG=m
+# CONFIG_RPMSG_CHAR is not set
+CONFIG_RPMSG_QCOM_GLINK_NATIVE=m
+CONFIG_RPMSG_QCOM_GLINK_RPM=m
+CONFIG_RPMSG_VIRTIO=m
+# end of Rpmsg drivers
+
+CONFIG_SOUNDWIRE=y
+
+#
+# SoundWire Devices
+#
+CONFIG_SOUNDWIRE_CADENCE=m
+CONFIG_SOUNDWIRE_INTEL=m
+
+#
+# SOC (System On Chip) specific Drivers
+#
+
+#
+# Amlogic SoC drivers
+#
+# end of Amlogic SoC drivers
+
+#
+# Aspeed SoC drivers
+#
+# end of Aspeed SoC drivers
+
+#
+# Broadcom SoC drivers
+#
+# end of Broadcom SoC drivers
+
+#
+# NXP/Freescale QorIQ SoC drivers
+#
+# end of NXP/Freescale QorIQ SoC drivers
+
+#
+# i.MX SoC drivers
+#
+# end of i.MX SoC drivers
+
+#
+# Qualcomm SoC drivers
+#
+# end of Qualcomm SoC drivers
+
+# CONFIG_SOC_TI is not set
+
+#
+# Xilinx SoC drivers
+#
+CONFIG_XILINX_VCU=m
+# end of Xilinx SoC drivers
+# end of SOC (System On Chip) specific Drivers
+
+CONFIG_PM_DEVFREQ=y
+
+#
+# DEVFREQ Governors
+#
+CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=m
+# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
+# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
+# CONFIG_DEVFREQ_GOV_USERSPACE is not set
+# CONFIG_DEVFREQ_GOV_PASSIVE is not set
+
+#
+# DEVFREQ Drivers
+#
+# CONFIG_PM_DEVFREQ_EVENT is not set
+CONFIG_EXTCON=y
+
+#
+# Extcon Device Drivers
+#
+CONFIG_EXTCON_ADC_JACK=m
+# CONFIG_EXTCON_ARIZONA is not set
+CONFIG_EXTCON_AXP288=m
+# CONFIG_EXTCON_FSA9480 is not set
+CONFIG_EXTCON_GPIO=m
+CONFIG_EXTCON_INTEL_INT3496=m
+CONFIG_EXTCON_INTEL_CHT_WC=m
+CONFIG_EXTCON_MAX14577=m
+CONFIG_EXTCON_MAX3355=m
+CONFIG_EXTCON_MAX77693=m
+CONFIG_EXTCON_MAX8997=m
+CONFIG_EXTCON_PALMAS=m
+# CONFIG_EXTCON_PTN5150 is not set
+CONFIG_EXTCON_RT8973A=m
+CONFIG_EXTCON_SM5502=m
+CONFIG_EXTCON_USB_GPIO=m
+CONFIG_EXTCON_USBC_CROS_EC=m
+CONFIG_MEMORY=y
+CONFIG_IIO=m
+CONFIG_IIO_BUFFER=y
+CONFIG_IIO_BUFFER_CB=m
+CONFIG_IIO_BUFFER_HW_CONSUMER=m
+CONFIG_IIO_KFIFO_BUF=m
+CONFIG_IIO_TRIGGERED_BUFFER=m
+CONFIG_IIO_CONFIGFS=m
+CONFIG_IIO_TRIGGER=y
+CONFIG_IIO_CONSUMERS_PER_TRIGGER=2
+CONFIG_IIO_SW_DEVICE=m
+CONFIG_IIO_SW_TRIGGER=m
+CONFIG_IIO_TRIGGERED_EVENT=m
+
+#
+# Accelerometers
+#
+CONFIG_ADIS16201=m
+CONFIG_ADIS16209=m
+CONFIG_ADXL345=m
+CONFIG_ADXL345_I2C=m
+CONFIG_ADXL345_SPI=m
+# CONFIG_ADXL372_SPI is not set
+# CONFIG_ADXL372_I2C is not set
+CONFIG_BMA180=m
+CONFIG_BMA220=m
+CONFIG_BMC150_ACCEL=m
+CONFIG_BMC150_ACCEL_I2C=m
+CONFIG_BMC150_ACCEL_SPI=m
+# CONFIG_DA280 is not set
+# CONFIG_DA311 is not set
+# CONFIG_DMARD09 is not set
+# CONFIG_DMARD10 is not set
+CONFIG_HID_SENSOR_ACCEL_3D=m
+# CONFIG_IIO_CROS_EC_ACCEL_LEGACY is not set
+CONFIG_IIO_ST_ACCEL_3AXIS=m
+CONFIG_IIO_ST_ACCEL_I2C_3AXIS=m
+CONFIG_IIO_ST_ACCEL_SPI_3AXIS=m
+CONFIG_KXSD9=m
+CONFIG_KXSD9_SPI=m
+CONFIG_KXSD9_I2C=m
+CONFIG_KXCJK1013=m
+# CONFIG_MC3230 is not set
+CONFIG_MMA7455=m
+CONFIG_MMA7455_I2C=m
+CONFIG_MMA7455_SPI=m
+CONFIG_MMA7660=m
+CONFIG_MMA8452=m
+# CONFIG_MMA9551 is not set
+# CONFIG_MMA9553 is not set
+CONFIG_MXC4005=m
+CONFIG_MXC6255=m
+CONFIG_SCA3000=m
+CONFIG_STK8312=m
+CONFIG_STK8BA50=m
+# end of Accelerometers
+
+#
+# Analog to digital converters
+#
+CONFIG_AD_SIGMA_DELTA=m
+CONFIG_AD7124=m
+CONFIG_AD7266=m
+CONFIG_AD7291=m
+CONFIG_AD7298=m
+CONFIG_AD7476=m
+CONFIG_AD7606=m
+CONFIG_AD7606_IFACE_PARALLEL=m
+CONFIG_AD7606_IFACE_SPI=m
+CONFIG_AD7766=m
+# CONFIG_AD7768_1 is not set
+CONFIG_AD7780=m
+CONFIG_AD7791=m
+CONFIG_AD7793=m
+CONFIG_AD7887=m
+CONFIG_AD7923=m
+CONFIG_AD7949=m
+CONFIG_AD799X=m
+# CONFIG_AXP20X_ADC is not set
+CONFIG_AXP288_ADC=m
+# CONFIG_CC10001_ADC is not set
+CONFIG_DLN2_ADC=m
+CONFIG_HI8435=m
+# CONFIG_HX711 is not set
+CONFIG_INA2XX_ADC=m
+CONFIG_LP8788_ADC=m
+CONFIG_LTC2471=m
+# CONFIG_LTC2485 is not set
+# CONFIG_LTC2497 is not set
+CONFIG_MAX1027=m
+# CONFIG_MAX11100 is not set
+# CONFIG_MAX1118 is not set
+CONFIG_MAX1363=m
+# CONFIG_MAX9611 is not set
+CONFIG_MCP320X=m
+CONFIG_MCP3422=m
+# CONFIG_MCP3911 is not set
+CONFIG_NAU7802=m
+CONFIG_PALMAS_GPADC=m
+CONFIG_QCOM_SPMI_IADC=m
+# CONFIG_QCOM_SPMI_VADC is not set
+# CONFIG_QCOM_SPMI_ADC5 is not set
+CONFIG_TI_ADC081C=m
+CONFIG_TI_ADC0832=m
+CONFIG_TI_ADC084S021=m
+# CONFIG_TI_ADC12138 is not set
+CONFIG_TI_ADC108S102=m
+CONFIG_TI_ADC128S052=m
+# CONFIG_TI_ADC161S626 is not set
+CONFIG_TI_ADS1015=m
+# CONFIG_TI_ADS7950 is not set
+CONFIG_TI_AM335X_ADC=m
+# CONFIG_TI_TLC4541 is not set
+CONFIG_TWL4030_MADC=m
+CONFIG_TWL6030_GPADC=m
+CONFIG_VIPERBOARD_ADC=m
+CONFIG_XILINX_XADC=m
+# end of Analog to digital converters
+
+#
+# Analog Front Ends
+#
+# end of Analog Front Ends
+
+#
+# Amplifiers
+#
+CONFIG_AD8366=m
+# end of Amplifiers
+
+#
+# Chemical Sensors
+#
+CONFIG_ATLAS_PH_SENSOR=m
+# CONFIG_BME680 is not set
+CONFIG_CCS811=m
+CONFIG_IAQCORE=m
+# CONFIG_PMS7003 is not set
+# CONFIG_SENSIRION_SGP30 is not set
+# CONFIG_SPS30 is not set
+CONFIG_VZ89X=m
+# end of Chemical Sensors
+
+CONFIG_IIO_CROS_EC_SENSORS_CORE=m
+CONFIG_IIO_CROS_EC_SENSORS=m
+CONFIG_IIO_CROS_EC_SENSORS_LID_ANGLE=m
+
+#
+# Hid Sensor IIO Common
+#
+CONFIG_HID_SENSOR_IIO_COMMON=m
+CONFIG_HID_SENSOR_IIO_TRIGGER=m
+# end of Hid Sensor IIO Common
+
+CONFIG_IIO_MS_SENSORS_I2C=m
+
+#
+# SSP Sensor Common
+#
+# CONFIG_IIO_SSP_SENSORHUB is not set
+# end of SSP Sensor Common
+
+CONFIG_IIO_ST_SENSORS_I2C=m
+CONFIG_IIO_ST_SENSORS_SPI=m
+CONFIG_IIO_ST_SENSORS_CORE=m
+
+#
+# Digital to analog converters
+#
+CONFIG_AD5064=m
+CONFIG_AD5360=m
+CONFIG_AD5380=m
+CONFIG_AD5421=m
+CONFIG_AD5446=m
+CONFIG_AD5449=m
+CONFIG_AD5592R_BASE=m
+CONFIG_AD5592R=m
+CONFIG_AD5593R=m
+CONFIG_AD5504=m
+CONFIG_AD5624R_SPI=m
+# CONFIG_LTC1660 is not set
+# CONFIG_LTC2632 is not set
+CONFIG_AD5686=m
+CONFIG_AD5686_SPI=m
+CONFIG_AD5696_I2C=m
+CONFIG_AD5755=m
+CONFIG_AD5758=m
+CONFIG_AD5761=m
+CONFIG_AD5764=m
+CONFIG_AD5791=m
+CONFIG_AD7303=m
+# CONFIG_CIO_DAC is not set
+CONFIG_AD8801=m
+# CONFIG_DS4424 is not set
+CONFIG_M62332=m
+CONFIG_MAX517=m
+CONFIG_MCP4725=m
+CONFIG_MCP4922=m
+# CONFIG_TI_DAC082S085 is not set
+# CONFIG_TI_DAC5571 is not set
+# CONFIG_TI_DAC7311 is not set
+# CONFIG_TI_DAC7612 is not set
+# end of Digital to analog converters
+
+#
+# IIO dummy driver
+#
+# CONFIG_IIO_SIMPLE_DUMMY is not set
+# end of IIO dummy driver
+
+#
+# Frequency Synthesizers DDS/PLL
+#
+
+#
+# Clock Generator/Distribution
+#
+CONFIG_AD9523=m
+# end of Clock Generator/Distribution
+
+#
+# Phase-Locked Loop (PLL) frequency synthesizers
+#
+CONFIG_ADF4350=m
+CONFIG_ADF4371=m
+# end of Phase-Locked Loop (PLL) frequency synthesizers
+# end of Frequency Synthesizers DDS/PLL
+
+#
+# Digital gyroscope sensors
+#
+CONFIG_ADIS16080=m
+CONFIG_ADIS16130=m
+CONFIG_ADIS16136=m
+CONFIG_ADIS16260=m
+CONFIG_ADXRS450=m
+CONFIG_BMG160=m
+CONFIG_BMG160_I2C=m
+CONFIG_BMG160_SPI=m
+# CONFIG_FXAS21002C is not set
+CONFIG_HID_SENSOR_GYRO_3D=m
+# CONFIG_MPU3050_I2C is not set
+CONFIG_IIO_ST_GYRO_3AXIS=m
+CONFIG_IIO_ST_GYRO_I2C_3AXIS=m
+CONFIG_IIO_ST_GYRO_SPI_3AXIS=m
+CONFIG_ITG3200=m
+# end of Digital gyroscope sensors
+
+#
+# Health Sensors
+#
+
+#
+# Heart Rate Monitors
+#
+CONFIG_AFE4403=m
+CONFIG_AFE4404=m
+CONFIG_MAX30100=m
+# CONFIG_MAX30102 is not set
+# end of Heart Rate Monitors
+# end of Health Sensors
+
+#
+# Humidity sensors
+#
+CONFIG_AM2315=m
+CONFIG_DHT11=m
+CONFIG_HDC100X=m
+CONFIG_HID_SENSOR_HUMIDITY=m
+CONFIG_HTS221=m
+CONFIG_HTS221_I2C=m
+CONFIG_HTS221_SPI=m
+CONFIG_HTU21=m
+CONFIG_SI7005=m
+CONFIG_SI7020=m
+# end of Humidity sensors
+
+#
+# Inertial measurement units
+#
+CONFIG_ADIS16400=m
+CONFIG_ADIS16460=m
+CONFIG_ADIS16480=m
+CONFIG_BMI160=m
+CONFIG_BMI160_I2C=m
+CONFIG_BMI160_SPI=m
+# CONFIG_KMX61 is not set
+CONFIG_INV_MPU6050_IIO=m
+CONFIG_INV_MPU6050_I2C=m
+CONFIG_INV_MPU6050_SPI=m
+# CONFIG_IIO_ST_LSM6DSX is not set
+# end of Inertial measurement units
+
+CONFIG_IIO_ADIS_LIB=m
+CONFIG_IIO_ADIS_LIB_BUFFER=y
+
+#
+# Light sensors
+#
+CONFIG_ACPI_ALS=m
+CONFIG_ADJD_S311=m
+CONFIG_AL3320A=m
+CONFIG_APDS9300=m
+CONFIG_APDS9960=m
+CONFIG_BH1750=m
+CONFIG_BH1780=m
+CONFIG_CM32181=m
+# CONFIG_CM3232 is not set
+# CONFIG_CM3323 is not set
+CONFIG_CM36651=m
+CONFIG_IIO_CROS_EC_LIGHT_PROX=m
+CONFIG_GP2AP020A00F=m
+CONFIG_SENSORS_ISL29018=m
+CONFIG_SENSORS_ISL29028=m
+CONFIG_ISL29125=m
+CONFIG_HID_SENSOR_ALS=m
+CONFIG_HID_SENSOR_PROX=m
+# CONFIG_JSA1212 is not set
+CONFIG_RPR0521=m
+CONFIG_LTR501=m
+# CONFIG_LV0104CS is not set
+CONFIG_MAX44000=m
+# CONFIG_MAX44009 is not set
+# CONFIG_NOA1305 is not set
+CONFIG_OPT3001=m
+CONFIG_PA12203001=m
+# CONFIG_SI1133 is not set
+# CONFIG_SI1145 is not set
+CONFIG_STK3310=m
+CONFIG_ST_UVIS25=m
+CONFIG_ST_UVIS25_I2C=m
+CONFIG_ST_UVIS25_SPI=m
+CONFIG_TCS3414=m
+CONFIG_TCS3472=m
+CONFIG_SENSORS_TSL2563=m
+CONFIG_TSL2583=m
+# CONFIG_TSL2772 is not set
+CONFIG_TSL4531=m
+CONFIG_US5182D=m
+CONFIG_VCNL4000=m
+# CONFIG_VCNL4035 is not set
+CONFIG_VEML6070=m
+# CONFIG_VL6180 is not set
+# CONFIG_ZOPT2201 is not set
+# end of Light sensors
+
+#
+# Magnetometer sensors
+#
+CONFIG_AK8975=m
+CONFIG_AK09911=m
+CONFIG_BMC150_MAGN=m
+CONFIG_BMC150_MAGN_I2C=m
+CONFIG_BMC150_MAGN_SPI=m
+CONFIG_MAG3110=m
+CONFIG_HID_SENSOR_MAGNETOMETER_3D=m
+CONFIG_MMC35240=m
+CONFIG_IIO_ST_MAGN_3AXIS=m
+CONFIG_IIO_ST_MAGN_I2C_3AXIS=m
+CONFIG_IIO_ST_MAGN_SPI_3AXIS=m
+CONFIG_SENSORS_HMC5843=m
+CONFIG_SENSORS_HMC5843_I2C=m
+CONFIG_SENSORS_HMC5843_SPI=m
+# CONFIG_SENSORS_RM3100_I2C is not set
+# CONFIG_SENSORS_RM3100_SPI is not set
+# end of Magnetometer sensors
+
+#
+# Multiplexers
+#
+# end of Multiplexers
+
+#
+# Inclinometer sensors
+#
+CONFIG_HID_SENSOR_INCLINOMETER_3D=m
+CONFIG_HID_SENSOR_DEVICE_ROTATION=m
+# end of Inclinometer sensors
+
+#
+# Triggers - standalone
+#
+CONFIG_IIO_HRTIMER_TRIGGER=m
+CONFIG_IIO_INTERRUPT_TRIGGER=m
+# CONFIG_IIO_TIGHTLOOP_TRIGGER is not set
+CONFIG_IIO_SYSFS_TRIGGER=m
+# end of Triggers - standalone
+
+#
+# Digital potentiometers
+#
+# CONFIG_AD5272 is not set
+CONFIG_DS1803=m
+# CONFIG_MAX5432 is not set
+# CONFIG_MAX5481 is not set
+# CONFIG_MAX5487 is not set
+# CONFIG_MCP4018 is not set
+CONFIG_MCP4131=m
+CONFIG_MCP4531=m
+# CONFIG_MCP41010 is not set
+CONFIG_TPL0102=m
+# end of Digital potentiometers
+
+#
+# Digital potentiostats
+#
+# CONFIG_LMP91000 is not set
+# end of Digital potentiostats
+
+#
+# Pressure sensors
+#
+# CONFIG_ABP060MG is not set
+# CONFIG_BMP280 is not set
+CONFIG_IIO_CROS_EC_BARO=m
+# CONFIG_DPS310 is not set
+CONFIG_HID_SENSOR_PRESS=m
+CONFIG_HP03=m
+CONFIG_MPL115=m
+CONFIG_MPL115_I2C=m
+CONFIG_MPL115_SPI=m
+# CONFIG_MPL3115 is not set
+# CONFIG_MS5611 is not set
+CONFIG_MS5637=m
+CONFIG_IIO_ST_PRESS=m
+CONFIG_IIO_ST_PRESS_I2C=m
+CONFIG_IIO_ST_PRESS_SPI=m
+CONFIG_T5403=m
+CONFIG_HP206C=m
+# CONFIG_ZPA2326 is not set
+# end of Pressure sensors
+
+#
+# Lightning sensors
+#
+CONFIG_AS3935=m
+# end of Lightning sensors
+
+#
+# Proximity and distance sensors
+#
+# CONFIG_ISL29501 is not set
+CONFIG_LIDAR_LITE_V2=m
+# CONFIG_MB1232 is not set
+# CONFIG_RFD77402 is not set
+# CONFIG_SRF04 is not set
+# CONFIG_SX9500 is not set
+# CONFIG_SRF08 is not set
+# CONFIG_VL53L0X_I2C is not set
+# end of Proximity and distance sensors
+
+#
+# Resolver to digital converters
+#
+CONFIG_AD2S90=m
+CONFIG_AD2S1200=m
+# end of Resolver to digital converters
+
+#
+# Temperature sensors
+#
+# CONFIG_MAXIM_THERMOCOUPLE is not set
+CONFIG_HID_SENSOR_TEMP=m
+CONFIG_MLX90614=m
+CONFIG_MLX90632=m
+CONFIG_TMP006=m
+# CONFIG_TMP007 is not set
+CONFIG_TSYS01=m
+CONFIG_TSYS02D=m
+# CONFIG_MAX31856 is not set
+# end of Temperature sensors
+
+CONFIG_NTB=m
+# CONFIG_NTB_MSI is not set
+CONFIG_NTB_AMD=m
+CONFIG_NTB_IDT=m
+CONFIG_NTB_INTEL=m
+# CONFIG_NTB_SWITCHTEC is not set
+CONFIG_NTB_PINGPONG=m
+CONFIG_NTB_TOOL=m
+CONFIG_NTB_PERF=m
+CONFIG_NTB_TRANSPORT=m
+CONFIG_VME_BUS=y
+
+#
+# VME Bridge Drivers
+#
+CONFIG_VME_CA91CX42=m
+CONFIG_VME_TSI148=m
+# CONFIG_VME_FAKE is not set
+
+#
+# VME Board Drivers
+#
+CONFIG_VMIVME_7805=m
+
+#
+# VME Device Drivers
+#
+CONFIG_VME_USER=m
+CONFIG_PWM=y
+CONFIG_PWM_SYSFS=y
+CONFIG_PWM_CRC=y
+CONFIG_PWM_CROS_EC=m
+CONFIG_PWM_LP3943=m
+CONFIG_PWM_LPSS=m
+CONFIG_PWM_LPSS_PCI=m
+CONFIG_PWM_LPSS_PLATFORM=m
+CONFIG_PWM_PCA9685=m
+CONFIG_PWM_TWL=m
+CONFIG_PWM_TWL_LED=m
+
+#
+# IRQ chip support
+#
+CONFIG_MADERA_IRQ=m
+# end of IRQ chip support
+
+# CONFIG_IPACK_BUS is not set
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_TI_SYSCON=m
+
+#
+# PHY Subsystem
+#
+CONFIG_GENERIC_PHY=y
+CONFIG_BCM_KONA_USB2_PHY=m
+CONFIG_PHY_PXA_28NM_HSIC=m
+CONFIG_PHY_PXA_28NM_USB2=m
+CONFIG_PHY_CPCAP_USB=m
+CONFIG_PHY_QCOM_USB_HS=m
+CONFIG_PHY_QCOM_USB_HSIC=m
+CONFIG_PHY_SAMSUNG_USB2=m
+CONFIG_PHY_TUSB1210=m
+# end of PHY Subsystem
+
+CONFIG_POWERCAP=y
+CONFIG_INTEL_RAPL_CORE=m
+CONFIG_INTEL_RAPL=m
+CONFIG_IDLE_INJECT=y
+# CONFIG_MCB is not set
+
+#
+# Performance monitor support
+#
+# end of Performance monitor support
+
+CONFIG_RAS=y
+# CONFIG_RAS_CEC is not set
+CONFIG_THUNDERBOLT=m
+
+#
+# Android
+#
+# CONFIG_ANDROID is not set
+# end of Android
+
+CONFIG_LIBNVDIMM=m
+CONFIG_BLK_DEV_PMEM=m
+CONFIG_ND_BLK=m
+CONFIG_ND_CLAIM=y
+CONFIG_ND_BTT=m
+CONFIG_BTT=y
+CONFIG_NVDIMM_KEYS=y
+CONFIG_DAX_DRIVER=y
+CONFIG_DAX=y
+CONFIG_DEV_DAX=m
+CONFIG_DEV_DAX_KMEM=m
+CONFIG_NVMEM=y
+CONFIG_NVMEM_SYSFS=y
+
+#
+# HW tracing support
+#
+CONFIG_STM=m
+CONFIG_STM_PROTO_BASIC=m
+CONFIG_STM_PROTO_SYS_T=m
+CONFIG_STM_DUMMY=m
+CONFIG_STM_SOURCE_CONSOLE=m
+CONFIG_STM_SOURCE_HEARTBEAT=m
+# CONFIG_STM_SOURCE_FTRACE is not set
+CONFIG_INTEL_TH=m
+CONFIG_INTEL_TH_PCI=m
+CONFIG_INTEL_TH_ACPI=m
+CONFIG_INTEL_TH_GTH=m
+CONFIG_INTEL_TH_STH=m
+CONFIG_INTEL_TH_MSU=m
+CONFIG_INTEL_TH_PTI=m
+# CONFIG_INTEL_TH_DEBUG is not set
+# end of HW tracing support
+
+CONFIG_FPGA=m
+# CONFIG_ALTERA_PR_IP_CORE is not set
+# CONFIG_FPGA_MGR_ALTERA_PS_SPI is not set
+# CONFIG_FPGA_MGR_ALTERA_CVP is not set
+# CONFIG_FPGA_MGR_XILINX_SPI is not set
+# CONFIG_FPGA_MGR_MACHXO2_SPI is not set
+# CONFIG_FPGA_BRIDGE is not set
+# CONFIG_FPGA_DFL is not set
+CONFIG_PM_OPP=y
+CONFIG_UNISYS_VISORBUS=m
+# CONFIG_SIOX is not set
+# CONFIG_SLIMBUS is not set
+# CONFIG_INTERCONNECT is not set
+# CONFIG_COUNTER is not set
+# end of Device Drivers
+
+#
+# File systems
+#
+CONFIG_DCACHE_WORD_ACCESS=y
+# CONFIG_VALIDATE_FS_PARSER is not set
+CONFIG_FS_IOMAP=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT2_FS_SECURITY=y
+CONFIG_EXT3_FS=m
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+# CONFIG_EXT4_DEBUG is not set
+CONFIG_JBD2=y
+# CONFIG_JBD2_DEBUG is not set
+CONFIG_FS_MBCACHE=y
+CONFIG_REISERFS_FS=m
+# CONFIG_REISERFS_CHECK is not set
+CONFIG_REISERFS_PROC_INFO=y
+CONFIG_REISERFS_FS_XATTR=y
+CONFIG_REISERFS_FS_POSIX_ACL=y
+CONFIG_REISERFS_FS_SECURITY=y
+CONFIG_JFS_FS=m
+CONFIG_JFS_POSIX_ACL=y
+CONFIG_JFS_SECURITY=y
+# CONFIG_JFS_DEBUG is not set
+CONFIG_JFS_STATISTICS=y
+CONFIG_XFS_FS=m
+CONFIG_XFS_QUOTA=y
+CONFIG_XFS_POSIX_ACL=y
+CONFIG_XFS_RT=y
+# CONFIG_XFS_ONLINE_SCRUB is not set
+# CONFIG_XFS_WARN is not set
+# CONFIG_XFS_DEBUG is not set
+CONFIG_GFS2_FS=m
+CONFIG_GFS2_FS_LOCKING_DLM=y
+CONFIG_OCFS2_FS=m
+CONFIG_OCFS2_FS_O2CB=m
+CONFIG_OCFS2_FS_USERSPACE_CLUSTER=m
+CONFIG_OCFS2_FS_STATS=y
+CONFIG_OCFS2_DEBUG_MASKLOG=y
+# CONFIG_OCFS2_DEBUG_FS is not set
+CONFIG_BTRFS_FS=y
+CONFIG_BTRFS_FS_POSIX_ACL=y
+# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
+# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
+# CONFIG_BTRFS_DEBUG is not set
+# CONFIG_BTRFS_ASSERT is not set
+# CONFIG_BTRFS_FS_REF_VERIFY is not set
+CONFIG_NILFS2_FS=m
+CONFIG_F2FS_FS=m
+CONFIG_F2FS_STAT_FS=y
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_FS_POSIX_ACL=y
+# CONFIG_F2FS_FS_SECURITY is not set
+# CONFIG_F2FS_CHECK_FS is not set
+# CONFIG_F2FS_IO_TRACE is not set
+# CONFIG_F2FS_FAULT_INJECTION is not set
+CONFIG_FS_DAX=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_EXPORTFS=y
+CONFIG_EXPORTFS_BLOCK_OPS=y
+CONFIG_FILE_LOCKING=y
+CONFIG_MANDATORY_FILE_LOCKING=y
+CONFIG_FS_ENCRYPTION=y
+# CONFIG_FS_VERITY is not set
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY_USER=y
+CONFIG_FANOTIFY=y
+CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
+CONFIG_QUOTA=y
+CONFIG_QUOTA_NETLINK_INTERFACE=y
+CONFIG_PRINT_QUOTA_WARNING=y
+# CONFIG_QUOTA_DEBUG is not set
+CONFIG_QUOTA_TREE=y
+CONFIG_QFMT_V1=m
+CONFIG_QFMT_V2=y
+CONFIG_QUOTACTL=y
+CONFIG_QUOTACTL_COMPAT=y
+CONFIG_AUTOFS4_FS=m
+CONFIG_AUTOFS_FS=m
+CONFIG_FUSE_FS=m
+CONFIG_CUSE=m
+CONFIG_VIRTIO_FS=m
+CONFIG_OVERLAY_FS=m
+# CONFIG_OVERLAY_FS_REDIRECT_DIR is not set
+CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y
+# CONFIG_OVERLAY_FS_INDEX is not set
+# CONFIG_OVERLAY_FS_XINO_AUTO is not set
+# CONFIG_OVERLAY_FS_METACOPY is not set
+CONFIG_AUFS_FS=m
+# CONFIG_AUFS_BRANCH_MAX_127 is not set
+CONFIG_AUFS_BRANCH_MAX_511=y
+# CONFIG_AUFS_BRANCH_MAX_1023 is not set
+# CONFIG_AUFS_BRANCH_MAX_32767 is not set
+CONFIG_AUFS_SBILIST=y
+# CONFIG_AUFS_HNOTIFY is not set
+# CONFIG_AUFS_EXPORT is not set
+# CONFIG_AUFS_XATTR is not set
+# CONFIG_AUFS_FHSM is not set
+# CONFIG_AUFS_RDU is not set
+# CONFIG_AUFS_DIRREN is not set
+CONFIG_AUFS_SHWH=y
+# CONFIG_AUFS_BR_RAMFS is not set
+# CONFIG_AUFS_BR_FUSE is not set
+CONFIG_AUFS_BR_HFSPLUS=y
+CONFIG_AUFS_BDEV_LOOP=y
+# CONFIG_AUFS_DEBUG is not set
+
+#
+# Caches
+#
+CONFIG_FSCACHE=m
+CONFIG_FSCACHE_STATS=y
+# CONFIG_FSCACHE_HISTOGRAM is not set
+CONFIG_FSCACHE_DEBUG=y
+# CONFIG_FSCACHE_OBJECT_LIST is not set
+CONFIG_CACHEFILES=m
+CONFIG_CACHEFILES_DEBUG=y
+# CONFIG_CACHEFILES_HISTOGRAM is not set
+# end of Caches
+
+#
+# CD-ROM/DVD Filesystems
+#
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+CONFIG_ZISOFS=y
+CONFIG_UDF_FS=m
+# end of CD-ROM/DVD Filesystems
+
+#
+# DOS/FAT/NT Filesystems
+#
+CONFIG_FAT_FS=m
+CONFIG_MSDOS_FS=m
+CONFIG_VFAT_FS=m
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
+CONFIG_FAT_DEFAULT_UTF8=y
+CONFIG_NTFS_FS=m
+# CONFIG_NTFS_DEBUG is not set
+# CONFIG_NTFS_RW is not set
+# end of DOS/FAT/NT Filesystems
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_VMCORE=y
+# CONFIG_PROC_VMCORE_DEVICE_DUMP is not set
+CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_PROC_CHILDREN=y
+CONFIG_PROC_PID_ARCH_STATUS=y
+CONFIG_KERNFS=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TMPFS_XATTR=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
+CONFIG_CONFIGFS_FS=m
+CONFIG_EFIVAR_FS=m
+# end of Pseudo filesystems
+
+CONFIG_MISC_FILESYSTEMS=y
+CONFIG_ORANGEFS_FS=m
+CONFIG_ADFS_FS=m
+# CONFIG_ADFS_FS_RW is not set
+CONFIG_AFFS_FS=m
+CONFIG_ECRYPT_FS=m
+# CONFIG_ECRYPT_FS_MESSAGING is not set
+CONFIG_HFS_FS=m
+CONFIG_HFSPLUS_FS=m
+CONFIG_BEFS_FS=m
+# CONFIG_BEFS_DEBUG is not set
+CONFIG_BFS_FS=m
+CONFIG_EFS_FS=m
+CONFIG_JFFS2_FS=m
+CONFIG_JFFS2_FS_DEBUG=0
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
+CONFIG_JFFS2_SUMMARY=y
+CONFIG_JFFS2_FS_XATTR=y
+CONFIG_JFFS2_FS_POSIX_ACL=y
+CONFIG_JFFS2_FS_SECURITY=y
+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
+CONFIG_JFFS2_ZLIB=y
+CONFIG_JFFS2_RTIME=y
+CONFIG_UBIFS_FS=m
+# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
+CONFIG_UBIFS_FS_LZO=y
+CONFIG_UBIFS_FS_ZLIB=y
+CONFIG_UBIFS_FS_ZSTD=y
+# CONFIG_UBIFS_ATIME_SUPPORT is not set
+CONFIG_UBIFS_FS_XATTR=y
+CONFIG_UBIFS_FS_SECURITY=y
+CONFIG_UBIFS_FS_AUTHENTICATION=y
+CONFIG_CRAMFS=y
+CONFIG_CRAMFS_BLOCKDEV=y
+CONFIG_SQUASHFS=m
+# CONFIG_SQUASHFS_FILE_CACHE is not set
+CONFIG_SQUASHFS_FILE_DIRECT=y
+# CONFIG_SQUASHFS_DECOMP_SINGLE is not set
+CONFIG_SQUASHFS_DECOMP_MULTI=y
+# CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set
+CONFIG_SQUASHFS_XATTR=y
+CONFIG_SQUASHFS_ZLIB=y
+CONFIG_SQUASHFS_LZ4=y
+CONFIG_SQUASHFS_LZO=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_SQUASHFS_ZSTD=y
+# CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set
+# CONFIG_SQUASHFS_EMBEDDED is not set
+CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
+CONFIG_VXFS_FS=m
+CONFIG_MINIX_FS=m
+CONFIG_OMFS_FS=m
+CONFIG_HPFS_FS=m
+CONFIG_QNX4FS_FS=m
+CONFIG_QNX6FS_FS=m
+# CONFIG_QNX6FS_DEBUG is not set
+CONFIG_ROMFS_FS=m
+# CONFIG_ROMFS_BACKED_BY_BLOCK is not set
+# CONFIG_ROMFS_BACKED_BY_MTD is not set
+CONFIG_ROMFS_BACKED_BY_BOTH=y
+CONFIG_ROMFS_ON_BLOCK=y
+CONFIG_ROMFS_ON_MTD=y
+CONFIG_PSTORE=y
+CONFIG_PSTORE_DEFLATE_COMPRESS=m
+CONFIG_PSTORE_LZO_COMPRESS=m
+CONFIG_PSTORE_LZ4_COMPRESS=m
+CONFIG_PSTORE_LZ4HC_COMPRESS=m
+CONFIG_PSTORE_842_COMPRESS=y
+CONFIG_PSTORE_ZSTD_COMPRESS=y
+CONFIG_PSTORE_COMPRESS=y
+CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y
+# CONFIG_PSTORE_LZO_COMPRESS_DEFAULT is not set
+# CONFIG_PSTORE_LZ4_COMPRESS_DEFAULT is not set
+# CONFIG_PSTORE_LZ4HC_COMPRESS_DEFAULT is not set
+# CONFIG_PSTORE_842_COMPRESS_DEFAULT is not set
+# CONFIG_PSTORE_ZSTD_COMPRESS_DEFAULT is not set
+CONFIG_PSTORE_COMPRESS_DEFAULT="deflate"
+# CONFIG_PSTORE_CONSOLE is not set
+# CONFIG_PSTORE_PMSG is not set
+# CONFIG_PSTORE_FTRACE is not set
+CONFIG_PSTORE_RAM=m
+CONFIG_SYSV_FS=m
+CONFIG_UFS_FS=m
+# CONFIG_UFS_FS_WRITE is not set
+# CONFIG_UFS_DEBUG is not set
+CONFIG_EROFS_FS=m
+# CONFIG_EROFS_FS_DEBUG is not set
+CONFIG_EROFS_FS_XATTR=y
+CONFIG_EROFS_FS_POSIX_ACL=y
+# CONFIG_EROFS_FS_SECURITY is not set
+# CONFIG_EROFS_FS_ZIP is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=m
+CONFIG_NFS_V2=m
+CONFIG_NFS_V3=m
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=m
+CONFIG_NFS_SWAP=y
+CONFIG_NFS_V4_1=y
+CONFIG_NFS_V4_2=y
+CONFIG_PNFS_FILE_LAYOUT=m
+CONFIG_PNFS_BLOCK=m
+CONFIG_PNFS_FLEXFILE_LAYOUT=m
+CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN="kernel.org"
+# CONFIG_NFS_V4_1_MIGRATION is not set
+CONFIG_NFS_V4_SECURITY_LABEL=y
+CONFIG_NFS_FSCACHE=y
+# CONFIG_NFS_USE_LEGACY_DNS is not set
+CONFIG_NFS_USE_KERNEL_DNS=y
+CONFIG_NFS_DEBUG=y
+CONFIG_NFSD=m
+CONFIG_NFSD_V2_ACL=y
+CONFIG_NFSD_V3=y
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_NFSD_PNFS=y
+CONFIG_NFSD_BLOCKLAYOUT=y
+CONFIG_NFSD_SCSILAYOUT=y
+CONFIG_NFSD_FLEXFILELAYOUT=y
+# CONFIG_NFSD_V4_SECURITY_LABEL is not set
+CONFIG_GRACE_PERIOD=m
+CONFIG_LOCKD=m
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_ACL_SUPPORT=m
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=m
+CONFIG_SUNRPC_GSS=m
+CONFIG_SUNRPC_BACKCHANNEL=y
+CONFIG_SUNRPC_SWAP=y
+CONFIG_RPCSEC_GSS_KRB5=m
+# CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES is not set
+CONFIG_SUNRPC_DEBUG=y
+CONFIG_SUNRPC_XPRT_RDMA=m
+CONFIG_CEPH_FS=m
+CONFIG_CEPH_FSCACHE=y
+CONFIG_CEPH_FS_POSIX_ACL=y
+CONFIG_CEPH_FS_SECURITY_LABEL=y
+CONFIG_CIFS=m
+CONFIG_CIFS_STATS2=y
+CONFIG_CIFS_ALLOW_INSECURE_LEGACY=y
+CONFIG_CIFS_WEAK_PW_HASH=y
+CONFIG_CIFS_UPCALL=y
+CONFIG_CIFS_XATTR=y
+CONFIG_CIFS_POSIX=y
+CONFIG_CIFS_DEBUG=y
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_DEBUG_DUMP_KEYS is not set
+CONFIG_CIFS_DFS_UPCALL=y
+# CONFIG_CIFS_SMB_DIRECT is not set
+# CONFIG_CIFS_FSCACHE is not set
+CONFIG_CODA_FS=m
+CONFIG_AFS_FS=m
+# CONFIG_AFS_DEBUG is not set
+CONFIG_AFS_FSCACHE=y
+# CONFIG_AFS_DEBUG_CURSOR is not set
+CONFIG_9P_FS=m
+CONFIG_9P_FSCACHE=y
+CONFIG_9P_FS_POSIX_ACL=y
+# CONFIG_9P_FS_SECURITY is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=m
+CONFIG_NLS_CODEPAGE_737=m
+CONFIG_NLS_CODEPAGE_775=m
+CONFIG_NLS_CODEPAGE_850=m
+CONFIG_NLS_CODEPAGE_852=m
+CONFIG_NLS_CODEPAGE_855=m
+CONFIG_NLS_CODEPAGE_857=m
+CONFIG_NLS_CODEPAGE_860=m
+CONFIG_NLS_CODEPAGE_861=m
+CONFIG_NLS_CODEPAGE_862=m
+CONFIG_NLS_CODEPAGE_863=m
+CONFIG_NLS_CODEPAGE_864=m
+CONFIG_NLS_CODEPAGE_865=m
+CONFIG_NLS_CODEPAGE_866=m
+CONFIG_NLS_CODEPAGE_869=m
+CONFIG_NLS_CODEPAGE_936=m
+CONFIG_NLS_CODEPAGE_950=m
+CONFIG_NLS_CODEPAGE_932=m
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=m
+CONFIG_NLS_CODEPAGE_1251=m
+CONFIG_NLS_ASCII=m
+CONFIG_NLS_ISO8859_1=m
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_NLS_MAC_ROMAN=m
+CONFIG_NLS_MAC_CELTIC=m
+CONFIG_NLS_MAC_CENTEURO=m
+CONFIG_NLS_MAC_CROATIAN=m
+CONFIG_NLS_MAC_CYRILLIC=m
+CONFIG_NLS_MAC_GAELIC=m
+CONFIG_NLS_MAC_GREEK=m
+CONFIG_NLS_MAC_ICELAND=m
+CONFIG_NLS_MAC_INUIT=m
+CONFIG_NLS_MAC_ROMANIAN=m
+CONFIG_NLS_MAC_TURKISH=m
+CONFIG_NLS_UTF8=m
+CONFIG_DLM=m
+# CONFIG_DLM_DEBUG is not set
+# CONFIG_UNICODE is not set
+# end of File systems
+
+#
+# Security options
+#
+CONFIG_KEYS=y
+CONFIG_KEYS_COMPAT=y
+# CONFIG_KEYS_REQUEST_CACHE is not set
+# CONFIG_PERSISTENT_KEYRINGS is not set
+# CONFIG_BIG_KEYS is not set
+CONFIG_TRUSTED_KEYS=m
+CONFIG_ENCRYPTED_KEYS=y
+# CONFIG_KEY_DH_OPERATIONS is not set
+# CONFIG_SECURITY_DMESG_RESTRICT is not set
+CONFIG_SECURITY=y
+CONFIG_SECURITYFS=y
+CONFIG_SECURITY_NETWORK=y
+CONFIG_PAGE_TABLE_ISOLATION=y
+# CONFIG_SECURITY_INFINIBAND is not set
+CONFIG_SECURITY_NETWORK_XFRM=y
+CONFIG_SECURITY_PATH=y
+CONFIG_INTEL_TXT=y
+CONFIG_LSM_MMAP_MIN_ADDR=65536
+CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
+CONFIG_HARDENED_USERCOPY=y
+CONFIG_HARDENED_USERCOPY_FALLBACK=y
+# CONFIG_HARDENED_USERCOPY_PAGESPAN is not set
+CONFIG_FORTIFY_SOURCE=y
+# CONFIG_STATIC_USERMODEHELPER is not set
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SECURITY_SELINUX_BOOTPARAM=y
+# CONFIG_SECURITY_SELINUX_DISABLE is not set
+CONFIG_SECURITY_SELINUX_DEVELOP=y
+# CONFIG_SECURITY_SELINUX_AVC_STATS is not set
+CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=0
+# CONFIG_SECURITY_SMACK is not set
+CONFIG_SECURITY_TOMOYO=y
+CONFIG_SECURITY_TOMOYO_MAX_ACCEPT_ENTRY=2048
+CONFIG_SECURITY_TOMOYO_MAX_AUDIT_LOG=1024
+# CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER is not set
+CONFIG_SECURITY_TOMOYO_POLICY_LOADER="/sbin/tomoyo-init"
+CONFIG_SECURITY_TOMOYO_ACTIVATION_TRIGGER="/sbin/init"
+# CONFIG_SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING is not set
+# CONFIG_SECURITY_APPARMOR is not set
+# CONFIG_SECURITY_LOADPIN is not set
+# CONFIG_SECURITY_YAMA is not set
+# CONFIG_SECURITY_SAFESETID is not set
+# CONFIG_SECURITY_LOCKDOWN_LSM is not set
+CONFIG_INTEGRITY=y
+# CONFIG_INTEGRITY_SIGNATURE is not set
+CONFIG_INTEGRITY_AUDIT=y
+# CONFIG_IMA is not set
+# CONFIG_EVM is not set
+CONFIG_DEFAULT_SECURITY_SELINUX=y
+# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
+# CONFIG_DEFAULT_SECURITY_DAC is not set
+CONFIG_LSM=""
+
+#
+# Kernel hardening options
+#
+
+#
+# Memory initialization
+#
+CONFIG_INIT_STACK_NONE=y
+# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
+# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
+# end of Memory initialization
+# end of Kernel hardening options
+# end of Security options
+
+CONFIG_XOR_BLOCKS=y
+CONFIG_ASYNC_CORE=m
+CONFIG_ASYNC_MEMCPY=m
+CONFIG_ASYNC_XOR=m
+CONFIG_ASYNC_PQ=m
+CONFIG_ASYNC_RAID6_RECOV=m
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_BLKCIPHER2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_AKCIPHER2=y
+CONFIG_CRYPTO_AKCIPHER=y
+CONFIG_CRYPTO_KPP2=y
+CONFIG_CRYPTO_KPP=m
+CONFIG_CRYPTO_ACOMP2=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+CONFIG_CRYPTO_USER=m
+CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
+CONFIG_CRYPTO_GF128MUL=m
+CONFIG_CRYPTO_NULL=y
+CONFIG_CRYPTO_NULL2=y
+CONFIG_CRYPTO_PCRYPT=m
+CONFIG_CRYPTO_CRYPTD=m
+CONFIG_CRYPTO_AUTHENC=m
+CONFIG_CRYPTO_TEST=m
+CONFIG_CRYPTO_SIMD=m
+CONFIG_CRYPTO_GLUE_HELPER_X86=m
+CONFIG_CRYPTO_ENGINE=m
+
+#
+# Public-key cryptography
+#
+CONFIG_CRYPTO_RSA=y
+CONFIG_CRYPTO_DH=m
+CONFIG_CRYPTO_ECC=m
+CONFIG_CRYPTO_ECDH=m
+CONFIG_CRYPTO_ECRDSA=m
+
+#
+# Authenticated Encryption with Associated Data
+#
+CONFIG_CRYPTO_CCM=m
+CONFIG_CRYPTO_GCM=m
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_AEGIS128_AESNI_SSE2=m
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_ECHAINIV=m
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CFB=m
+CONFIG_CRYPTO_CTR=y
+CONFIG_CRYPTO_CTS=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_OFB=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_XTS=y
+CONFIG_CRYPTO_KEYWRAP=m
+CONFIG_CRYPTO_NHPOLY1305=m
+CONFIG_CRYPTO_NHPOLY1305_SSE2=m
+CONFIG_CRYPTO_NHPOLY1305_AVX2=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_ESSIV=m
+
+#
+# Hash modes
+#
+CONFIG_CRYPTO_CMAC=m
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_VMAC=m
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CRC32C_INTEL=m
+CONFIG_CRYPTO_CRC32=m
+CONFIG_CRYPTO_CRC32_PCLMUL=m
+CONFIG_CRYPTO_XXHASH=m
+CONFIG_CRYPTO_CRCT10DIF=y
+CONFIG_CRYPTO_CRCT10DIF_PCLMUL=y
+CONFIG_CRYPTO_GHASH=m
+CONFIG_CRYPTO_POLY1305=m
+CONFIG_CRYPTO_POLY1305_X86_64=m
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD128=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_RMD256=m
+CONFIG_CRYPTO_RMD320=m
+CONFIG_CRYPTO_SHA1=m
+CONFIG_CRYPTO_SHA1_SSSE3=m
+CONFIG_CRYPTO_SHA256_SSSE3=m
+CONFIG_CRYPTO_SHA512_SSSE3=m
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3=m
+CONFIG_CRYPTO_STREEBOG=m
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=m
+
+#
+# Ciphers
+#
+CONFIG_CRYPTO_LIB_AES=y
+CONFIG_CRYPTO_AES=y
+CONFIG_CRYPTO_AES_TI=m
+CONFIG_CRYPTO_AES_NI_INTEL=m
+CONFIG_CRYPTO_ANUBIS=m
+CONFIG_CRYPTO_LIB_ARC4=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_BLOWFISH=m
+CONFIG_CRYPTO_BLOWFISH_COMMON=m
+CONFIG_CRYPTO_BLOWFISH_X86_64=m
+CONFIG_CRYPTO_CAMELLIA=m
+CONFIG_CRYPTO_CAMELLIA_X86_64=m
+CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64=m
+CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=m
+CONFIG_CRYPTO_CAST_COMMON=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_CAST5_AVX_X86_64=m
+CONFIG_CRYPTO_CAST6=m
+CONFIG_CRYPTO_CAST6_AVX_X86_64=m
+CONFIG_CRYPTO_LIB_DES=m
+CONFIG_CRYPTO_DES=m
+CONFIG_CRYPTO_DES3_EDE_X86_64=m
+CONFIG_CRYPTO_FCRYPT=m
+CONFIG_CRYPTO_KHAZAD=m
+CONFIG_CRYPTO_SALSA20=m
+CONFIG_CRYPTO_CHACHA20=m
+CONFIG_CRYPTO_CHACHA20_X86_64=m
+CONFIG_CRYPTO_SEED=m
+CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
+CONFIG_CRYPTO_SERPENT_AVX_X86_64=m
+CONFIG_CRYPTO_SERPENT_AVX2_X86_64=m
+CONFIG_CRYPTO_SM4=m
+CONFIG_CRYPTO_TEA=m
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
+CONFIG_CRYPTO_TWOFISH_X86_64=m
+CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
+CONFIG_CRYPTO_TWOFISH_AVX_X86_64=m
+
+#
+# Compression
+#
+CONFIG_CRYPTO_DEFLATE=m
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_842=y
+CONFIG_CRYPTO_LZ4=m
+CONFIG_CRYPTO_LZ4HC=m
+CONFIG_CRYPTO_ZSTD=y
+
+#
+# Random Number Generation
+#
+CONFIG_CRYPTO_ANSI_CPRNG=m
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+# CONFIG_CRYPTO_DRBG_HASH is not set
+# CONFIG_CRYPTO_DRBG_CTR is not set
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_USER_API=m
+CONFIG_CRYPTO_USER_API_HASH=m
+CONFIG_CRYPTO_USER_API_SKCIPHER=m
+CONFIG_CRYPTO_USER_API_RNG=m
+CONFIG_CRYPTO_USER_API_AEAD=m
+# CONFIG_CRYPTO_STATS is not set
+CONFIG_CRYPTO_HASH_INFO=y
+CONFIG_CRYPTO_HW=y
+CONFIG_CRYPTO_DEV_PADLOCK=m
+CONFIG_CRYPTO_DEV_PADLOCK_AES=m
+CONFIG_CRYPTO_DEV_PADLOCK_SHA=m
+CONFIG_CRYPTO_DEV_ATMEL_I2C=m
+CONFIG_CRYPTO_DEV_ATMEL_ECC=m
+CONFIG_CRYPTO_DEV_ATMEL_SHA204A=m
+CONFIG_CRYPTO_DEV_CCP=y
+CONFIG_CRYPTO_DEV_CCP_DD=m
+CONFIG_CRYPTO_DEV_SP_CCP=y
+CONFIG_CRYPTO_DEV_CCP_CRYPTO=m
+CONFIG_CRYPTO_DEV_SP_PSP=y
+# CONFIG_CRYPTO_DEV_CCP_DEBUGFS is not set
+CONFIG_CRYPTO_DEV_QAT=m
+CONFIG_CRYPTO_DEV_QAT_DH895xCC=m
+CONFIG_CRYPTO_DEV_QAT_C3XXX=m
+CONFIG_CRYPTO_DEV_QAT_C62X=m
+CONFIG_CRYPTO_DEV_QAT_DH895xCCVF=m
+CONFIG_CRYPTO_DEV_QAT_C3XXXVF=m
+CONFIG_CRYPTO_DEV_QAT_C62XVF=m
+CONFIG_CRYPTO_DEV_NITROX=m
+CONFIG_CRYPTO_DEV_NITROX_CNN55XX=m
+CONFIG_CRYPTO_DEV_CHELSIO=m
+CONFIG_CHELSIO_IPSEC_INLINE=y
+CONFIG_CRYPTO_DEV_CHELSIO_TLS=m
+CONFIG_CRYPTO_DEV_VIRTIO=m
+CONFIG_CRYPTO_DEV_SAFEXCEL=m
+CONFIG_ASYMMETRIC_KEY_TYPE=y
+CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
+CONFIG_ASYMMETRIC_TPM_KEY_SUBTYPE=m
+CONFIG_X509_CERTIFICATE_PARSER=y
+CONFIG_PKCS8_PRIVATE_KEY_PARSER=m
+CONFIG_TPM_KEY_PARSER=m
+CONFIG_PKCS7_MESSAGE_PARSER=y
+# CONFIG_PKCS7_TEST_KEY is not set
+CONFIG_SIGNED_PE_FILE_VERIFICATION=y
+
+#
+# Certificates for signature checking
+#
+CONFIG_SYSTEM_TRUSTED_KEYRING=y
+CONFIG_SYSTEM_TRUSTED_KEYS=""
+# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
+# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
+# CONFIG_SYSTEM_BLACKLIST_KEYRING is not set
+# end of Certificates for signature checking
+
+CONFIG_BINARY_PRINTF=y
+
+#
+# Library routines
+#
+CONFIG_RAID6_PQ=y
+CONFIG_RAID6_PQ_BENCHMARK=y
+# CONFIG_PACKING is not set
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_NET_UTILS=y
+CONFIG_GENERIC_FIND_FIRST_BIT=y
+CONFIG_CORDIC=m
+CONFIG_RATIONAL=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_IOMAP=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
+CONFIG_CRC_CCITT=m
+CONFIG_CRC16=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRC_ITU_T=m
+CONFIG_CRC32=y
+# CONFIG_CRC32_SELFTEST is not set
+CONFIG_CRC32_SLICEBY8=y
+# CONFIG_CRC32_SLICEBY4 is not set
+# CONFIG_CRC32_SARWATE is not set
+# CONFIG_CRC32_BIT is not set
+CONFIG_CRC64=y
+CONFIG_CRC4=m
+CONFIG_CRC7=m
+CONFIG_LIBCRC32C=y
+CONFIG_CRC8=m
+CONFIG_XXHASH=y
+# CONFIG_RANDOM32_SELFTEST is not set
+CONFIG_842_COMPRESS=y
+CONFIG_842_DECOMPRESS=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_LZ4_COMPRESS=m
+CONFIG_LZ4HC_COMPRESS=m
+CONFIG_LZ4_DECOMPRESS=y
+CONFIG_ZSTD_COMPRESS=y
+CONFIG_ZSTD_DECOMPRESS=y
+CONFIG_XZ_DEC=y
+CONFIG_XZ_DEC_X86=y
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_SPARC is not set
+CONFIG_XZ_DEC_BCJ=y
+# CONFIG_XZ_DEC_TEST is not set
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DECOMPRESS_XZ=y
+CONFIG_DECOMPRESS_LZO=y
+CONFIG_DECOMPRESS_LZ4=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_REED_SOLOMON=m
+CONFIG_REED_SOLOMON_ENC8=y
+CONFIG_REED_SOLOMON_DEC8=y
+CONFIG_REED_SOLOMON_DEC16=y
+CONFIG_BCH=m
+CONFIG_TEXTSEARCH=y
+CONFIG_TEXTSEARCH_KMP=m
+CONFIG_TEXTSEARCH_BM=m
+CONFIG_TEXTSEARCH_FSM=m
+CONFIG_BTREE=y
+CONFIG_INTERVAL_TREE=y
+CONFIG_XARRAY_MULTI=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAS_DMA=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_DMA_VIRT_OPS=y
+CONFIG_SWIOTLB=y
+# CONFIG_DMA_CMA is not set
+# CONFIG_DMA_API_DEBUG is not set
+CONFIG_SGL_ALLOC=y
+CONFIG_IOMMU_HELPER=y
+CONFIG_CHECK_SIGNATURE=y
+CONFIG_CPU_RMAP=y
+CONFIG_DQL=y
+CONFIG_GLOB=y
+# CONFIG_GLOB_SELFTEST is not set
+CONFIG_NLATTR=y
+CONFIG_CLZ_TAB=y
+CONFIG_IRQ_POLL=y
+CONFIG_MPILIB=y
+CONFIG_DIMLIB=y
+CONFIG_OID_REGISTRY=y
+CONFIG_UCS2_STRING=y
+CONFIG_HAVE_GENERIC_VDSO=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_FONT_SUPPORT=y
+# CONFIG_FONTS is not set
+CONFIG_FONT_8x8=y
+CONFIG_FONT_8x16=y
+CONFIG_SG_POOL=y
+CONFIG_ARCH_HAS_PMEM_API=y
+CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
+CONFIG_ARCH_HAS_UACCESS_MCSAFE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_SBITMAP=y
+CONFIG_PARMAN=m
+CONFIG_OBJAGG=m
+# CONFIG_STRING_SELFTEST is not set
+# end of Library routines
+
+#
+# Kernel hacking
+#
+
+#
+# printk and dmesg options
+#
+CONFIG_PRINTK_TIME=y
+# CONFIG_PRINTK_CALLER is not set
+CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
+CONFIG_CONSOLE_LOGLEVEL_QUIET=4
+CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_DYNAMIC_DEBUG=y
+# end of printk and dmesg options
+
+#
+# Compile-time checks and compiler options
+#
+# CONFIG_DEBUG_INFO is not set
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=2048
+CONFIG_STRIP_ASM_SYMS=y
+# CONFIG_READABLE_ASM is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_INSTALL is not set
+CONFIG_OPTIMIZE_INLINING=y
+# CONFIG_DEBUG_SECTION_MISMATCH is not set
+CONFIG_SECTION_MISMATCH_WARN_ONLY=y
+CONFIG_STACK_VALIDATION=y
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# end of Compile-time checks and compiler options
+
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
+CONFIG_MAGIC_SYSRQ_SERIAL=y
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_MISC=y
+
+#
+# Memory Debugging
+#
+# CONFIG_PAGE_EXTENSION is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_PAGE_OWNER is not set
+# CONFIG_PAGE_POISONING is not set
+# CONFIG_DEBUG_PAGE_REF is not set
+# CONFIG_DEBUG_RODATA_TEST is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+# CONFIG_DEBUG_KMEMLEAK is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_VM is not set
+CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
+# CONFIG_DEBUG_VIRTUAL is not set
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
+# CONFIG_DEBUG_PER_CPU_MAPS is not set
+CONFIG_HAVE_ARCH_KASAN=y
+CONFIG_CC_HAS_KASAN_GENERIC=y
+# CONFIG_KASAN is not set
+CONFIG_KASAN_STACK=1
+# end of Memory Debugging
+
+CONFIG_ARCH_HAS_KCOV=y
+CONFIG_CC_HAS_SANCOV_TRACE_PC=y
+# CONFIG_KCOV is not set
+# CONFIG_DEBUG_SHIRQ is not set
+
+#
+# Debug Lockups and Hangs
+#
+# CONFIG_SOFTLOCKUP_DETECTOR is not set
+CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
+# CONFIG_HARDLOCKUP_DETECTOR is not set
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
+# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
+CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
+# CONFIG_WQ_WATCHDOG is not set
+# end of Debug Lockups and Hangs
+
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+CONFIG_PANIC_TIMEOUT=0
+CONFIG_SCHED_DEBUG=y
+CONFIG_SCHED_INFO=y
+CONFIG_SCHEDSTATS=y
+# CONFIG_SCHED_STACK_END_CHECK is not set
+# CONFIG_DEBUG_TIMEKEEPING is not set
+
+#
+# Lock Debugging (spinlocks, mutexes, etc...)
+#
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+# CONFIG_PROVE_LOCKING is not set
+# CONFIG_LOCK_STAT is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
+# CONFIG_DEBUG_RWSEMS is not set
+# CONFIG_DEBUG_LOCK_ALLOC is not set
+# CONFIG_DEBUG_ATOMIC_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_LOCK_TORTURE_TEST is not set
+# CONFIG_WW_MUTEX_SELFTEST is not set
+# end of Lock Debugging (spinlocks, mutexes, etc...)
+
+CONFIG_STACKTRACE=y
+# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_PLIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+
+#
+# RCU Debugging
+#
+CONFIG_TORTURE_TEST=m
+CONFIG_RCU_PERF_TEST=m
+# CONFIG_RCU_TORTURE_TEST is not set
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
+# CONFIG_RCU_TRACE is not set
+# CONFIG_RCU_EQS_DEBUG is not set
+# end of RCU Debugging
+
+# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
+CONFIG_NOTIFIER_ERROR_INJECTION=m
+CONFIG_PM_NOTIFIER_ERROR_INJECT=m
+# CONFIG_NETDEV_NOTIFIER_ERROR_INJECT is not set
+CONFIG_FUNCTION_ERROR_INJECTION=y
+# CONFIG_FAULT_INJECTION is not set
+CONFIG_LATENCYTOP=y
+CONFIG_USER_STACKTRACE_SUPPORT=y
+CONFIG_NOP_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_FENTRY=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_TRACER_MAX_TRACE=y
+CONFIG_TRACE_CLOCK=y
+CONFIG_RING_BUFFER=y
+CONFIG_EVENT_TRACING=y
+CONFIG_CONTEXT_SWITCH_TRACER=y
+CONFIG_RING_BUFFER_ALLOW_SWAP=y
+CONFIG_TRACING=y
+CONFIG_GENERIC_TRACER=y
+CONFIG_TRACING_SUPPORT=y
+CONFIG_FTRACE=y
+CONFIG_FUNCTION_TRACER=y
+# CONFIG_FUNCTION_GRAPH_TRACER is not set
+# CONFIG_PREEMPTIRQ_EVENTS is not set
+# CONFIG_IRQSOFF_TRACER is not set
+CONFIG_SCHED_TRACER=y
+# CONFIG_HWLAT_TRACER is not set
+CONFIG_FTRACE_SYSCALLS=y
+CONFIG_TRACER_SNAPSHOT=y
+# CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP is not set
+CONFIG_BRANCH_PROFILE_NONE=y
+# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
+CONFIG_STACK_TRACER=y
+CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_KPROBE_EVENTS=y
+# CONFIG_KPROBE_EVENTS_ON_NOTRACE is not set
+CONFIG_UPROBE_EVENTS=y
+CONFIG_BPF_EVENTS=y
+CONFIG_DYNAMIC_EVENTS=y
+CONFIG_PROBE_EVENTS=y
+CONFIG_DYNAMIC_FTRACE=y
+CONFIG_DYNAMIC_FTRACE_WITH_REGS=y
+CONFIG_FUNCTION_PROFILER=y
+# CONFIG_BPF_KPROBE_OVERRIDE is not set
+CONFIG_FTRACE_MCOUNT_RECORD=y
+# CONFIG_FTRACE_STARTUP_TEST is not set
+CONFIG_MMIOTRACE=y
+# CONFIG_HIST_TRIGGERS is not set
+# CONFIG_MMIOTRACE_TEST is not set
+# CONFIG_TRACEPOINT_BENCHMARK is not set
+CONFIG_RING_BUFFER_BENCHMARK=m
+# CONFIG_RING_BUFFER_STARTUP_TEST is not set
+# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
+# CONFIG_TRACE_EVAL_MAP_FILE is not set
+# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
+CONFIG_RUNTIME_TESTING_MENU=y
+# CONFIG_LKDTM is not set
+# CONFIG_TEST_LIST_SORT is not set
+# CONFIG_TEST_SORT is not set
+# CONFIG_KPROBES_SANITY_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+CONFIG_RBTREE_TEST=m
+# CONFIG_REED_SOLOMON_TEST is not set
+CONFIG_INTERVAL_TREE_TEST=m
+# CONFIG_PERCPU_TEST is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
+# CONFIG_ASYNC_RAID6_TEST is not set
+# CONFIG_TEST_HEXDUMP is not set
+# CONFIG_TEST_STRING_HELPERS is not set
+# CONFIG_TEST_STRSCPY is not set
+# CONFIG_TEST_KSTRTOX is not set
+# CONFIG_TEST_PRINTF is not set
+# CONFIG_TEST_BITMAP is not set
+# CONFIG_TEST_BITFIELD is not set
+# CONFIG_TEST_UUID is not set
+CONFIG_TEST_XARRAY=m
+# CONFIG_TEST_OVERFLOW is not set
+# CONFIG_TEST_RHASHTABLE is not set
+# CONFIG_TEST_HASH is not set
+# CONFIG_TEST_IDA is not set
+# CONFIG_TEST_PARMAN is not set
+# CONFIG_TEST_LKM is not set
+# CONFIG_TEST_VMALLOC is not set
+# CONFIG_TEST_USER_COPY is not set
+# CONFIG_TEST_BPF is not set
+# CONFIG_TEST_BLACKHOLE_DEV is not set
+# CONFIG_FIND_BIT_BENCHMARK is not set
+# CONFIG_TEST_FIRMWARE is not set
+# CONFIG_TEST_SYSCTL is not set
+# CONFIG_TEST_UDELAY is not set
+# CONFIG_TEST_STATIC_KEYS is not set
+# CONFIG_TEST_KMOD is not set
+# CONFIG_TEST_MEMCAT_P is not set
+# CONFIG_TEST_LIVEPATCH is not set
+# CONFIG_TEST_OBJAGG is not set
+# CONFIG_TEST_STACKINIT is not set
+# CONFIG_TEST_MEMINIT is not set
+CONFIG_MEMTEST=y
+# CONFIG_BUG_ON_DATA_CORRUPTION is not set
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
+# CONFIG_UBSAN is not set
+CONFIG_UBSAN_ALIGNMENT=y
+CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
+CONFIG_STRICT_DEVMEM=y
+CONFIG_IO_STRICT_DEVMEM=y
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_X86_VERBOSE_BOOTUP=y
+CONFIG_EARLY_PRINTK=y
+# CONFIG_EARLY_PRINTK_DBGP is not set
+# CONFIG_EARLY_PRINTK_USB_XDBC is not set
+CONFIG_X86_PTDUMP_CORE=y
+# CONFIG_X86_PTDUMP is not set
+# CONFIG_EFI_PGT_DUMP is not set
+CONFIG_DEBUG_WX=y
+CONFIG_DOUBLEFAULT=y
+# CONFIG_DEBUG_TLBFLUSH is not set
+# CONFIG_IOMMU_DEBUG is not set
+CONFIG_HAVE_MMIOTRACE_SUPPORT=y
+# CONFIG_X86_DECODER_SELFTEST is not set
+CONFIG_IO_DELAY_0X80=y
+# CONFIG_IO_DELAY_0XED is not set
+# CONFIG_IO_DELAY_UDELAY is not set
+# CONFIG_IO_DELAY_NONE is not set
+# CONFIG_DEBUG_BOOT_PARAMS is not set
+# CONFIG_CPA_DEBUG is not set
+# CONFIG_DEBUG_ENTRY is not set
+# CONFIG_DEBUG_NMI_SELFTEST is not set
+CONFIG_X86_DEBUG_FPU=y
+CONFIG_PUNIT_ATOM_DEBUG=m
+CONFIG_UNWINDER_ORC=y
+# CONFIG_UNWINDER_FRAME_POINTER is not set
+# CONFIG_UNWINDER_GUESS is not set
+# end of Kernel hacking
diff --git a/kernel/kernel/files/patches/linux/patch-5.4.6.xz b/kernel/kernel/files/patches/linux/patch-5.4.6.xz
new file mode 100644
index 00000000..96152450
Binary files /dev/null and b/kernel/kernel/files/patches/linux/patch-5.4.6.xz differ
diff --git a/kernel/kernel/files/patches/mageia/CVE-2019-12379.patch b/kernel/kernel/files/patches/mageia/CVE-2019-12379.patch
new file mode 100644
index 00000000..04d16049
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/CVE-2019-12379.patch
@@ -0,0 +1,37 @@
+From 84ecc2f6eb1cb12e6d44818f94fa49b50f06e6ac Mon Sep 17 00:00:00 2001
+From: Gen Zhang <blackgod016574@gmail.com>
+Date: Thu, 23 May 2019 08:34:52 +0800
+Subject: consolemap: Fix a memory leaking bug in drivers/tty/vt/consolemap.c
+
+In function con_insert_unipair(), when allocation for p2 and p1[n]
+fails, ENOMEM is returned, but previously allocated p1 is not freed,
+remains as leaking memory. Thus we should free p1 as well when this
+allocation fails.
+
+Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
+Reviewed-by: Kees Cook <keescook@chromium.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/tty/vt/consolemap.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
+index b28aa0d289f8..79fcc96cc7c0 100644
+--- a/drivers/tty/vt/consolemap.c
++++ b/drivers/tty/vt/consolemap.c
+@@ -489,7 +489,11 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
+ 	p2 = p1[n = (unicode >> 6) & 0x1f];
+ 	if (!p2) {
+ 		p2 = p1[n] = kmalloc_array(64, sizeof(u16), GFP_KERNEL);
+-		if (!p2) return -ENOMEM;
++		if (!p2) {
++			kfree(p1);
++			p->uni_pgdir[n] = NULL;
++			return -ENOMEM;
++		}
+ 		memset(p2, 0xff, 64*sizeof(u16)); /* No glyphs for the characters (yet) */
+ 	}
+ 
+-- 
+cgit 1.2-0.3.lf.el7
+
diff --git a/kernel/kernel/files/patches/mageia/disable-mrproper-in-devel-rpms.patch b/kernel/kernel/files/patches/mageia/disable-mrproper-in-devel-rpms.patch
new file mode 100644
index 00000000..150d8e1e
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/disable-mrproper-in-devel-rpms.patch
@@ -0,0 +1,74 @@
+
+ Makefile                 |   18 +++++-------------
+ scripts/kconfig/Makefile |    4 ----
+ 2 files changed, 5 insertions(+), 17 deletions(-)
+
+diff -Nurp linux-5.4.orig/Makefile linux-5.4/Makefile
+--- linux-5.4.orig/Makefile	2019-11-30 23:06:49.394199628 +0200
++++ linux-5.4/Makefile	2019-11-30 23:08:00.927203318 +0200
+@@ -1093,8 +1093,7 @@ include/config/kernel.release: FORCE
+ # Carefully list dependencies so we do not try to build scripts twice
+ # in parallel
+ PHONY += scripts
+-scripts: scripts_basic scripts_dtc
+-	$(Q)$(MAKE) $(build)=$(@)
++scripts:
+ 
+ # Things we need to do before we recursively start building the kernel
+ # or the modules are listed in "prepare".
+@@ -1112,7 +1111,7 @@ prepare0: archprepare
+ 	$(Q)$(MAKE) $(build)=.
+ 
+ # All the preparing..
+-prepare: prepare0 prepare-objtool
++prepare:
+ 
+ # Support for using generic headers in asm-generic
+ asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
+@@ -1363,15 +1362,8 @@ CLEAN_DIRS  += include/ksym
+ CLEAN_FILES += modules.builtin.modinfo
+ 
+ # Directories & files removed with 'make mrproper'
+-MRPROPER_DIRS  += include/config include/generated          \
+-		  arch/$(SRCARCH)/include/generated .tmp_objdiff \
+-		  debian/ snap/ tar-install/
+-MRPROPER_FILES += .config .config.old .version \
+-		  Module.symvers \
+-		  signing_key.pem signing_key.priv signing_key.x509	\
+-		  x509.genkey extra_certificates signing_key.x509.keyid	\
+-		  signing_key.x509.signer vmlinux-gdb.py \
+-		  *.spec
++MRPROPER_DIRS  += ""
++MRPROPER_FILES += ""
+ 
+ # Directories & files removed with 'make distclean'
+ DISTCLEAN_DIRS  +=
+@@ -1394,7 +1386,7 @@ clean: archclean vmlinuxclean
+ #
+ mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
+ mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
+-mrproper-dirs      := $(addprefix _mrproper_,scripts)
++mrproper-dirs      := $(addprefix _mrproper_,scripts)
+ 
+ PHONY += $(mrproper-dirs) mrproper
+ $(mrproper-dirs):
+diff -Nurp linux-5.4.orig/scripts/kconfig/Makefile linux-5.4/scripts/kconfig/Makefile
+--- linux-5.4.orig/scripts/kconfig/Makefile	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4/scripts/kconfig/Makefile	2019-11-30 23:07:24.957201462 +0200
+@@ -24,16 +24,12 @@ endif
+ unexport CONFIG_
+ 
+ xconfig: $(obj)/qconf
+-	$< $(silent) $(Kconfig)
+ 
+ gconfig: $(obj)/gconf
+-	$< $(silent) $(Kconfig)
+ 
+ menuconfig: $(obj)/mconf
+-	$< $(silent) $(Kconfig)
+ 
+ config: $(obj)/conf
+-	$< $(silent) --oldaskconfig $(Kconfig)
+ 
+ nconfig: $(obj)/nconf
+ 	$< $(silent) $(Kconfig)
diff --git a/kernel/kernel/files/patches/mageia/fs-aufs-5.4-modular.patch b/kernel/kernel/files/patches/mageia/fs-aufs-5.4-modular.patch
new file mode 100644
index 00000000..ec4a9135
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/fs-aufs-5.4-modular.patch
@@ -0,0 +1,321 @@
+
+ fs/aufs/Kconfig          |    2 +-
+ fs/dcache.c              |    2 ++
+ fs/exec.c                |    1 +
+ fs/fcntl.c               |    1 +
+ fs/file_table.c          |    2 ++
+ fs/inode.c               |    1 +
+ fs/namespace.c           |    3 +++
+ fs/notify/group.c        |    1 +
+ fs/open.c                |    1 +
+ fs/read_write.c          |    4 ++++
+ fs/splice.c              |    2 ++
+ fs/sync.c                |    1 +
+ fs/xattr.c               |    1 +
+ kernel/locking/lockdep.c |    1 +
+ kernel/task_work.c       |    1 +
+ security/device_cgroup.c |    1 +
+ security/security.c      |    8 ++++++++
+ 17 files changed, 32 insertions(+), 1 deletion(-)
+
+diff -Nurp linux-5.4-aufs/fs/aufs/Kconfig linux-5.4-aufs-mod/fs/aufs/Kconfig
+--- linux-5.4-aufs/fs/aufs/Kconfig	2019-11-28 01:25:59.062925618 +0200
++++ linux-5.4-aufs-mod/fs/aufs/Kconfig	2019-11-28 01:38:40.564895255 +0200
+@@ -1,6 +1,6 @@
+ # SPDX-License-Identifier: GPL-2.0
+ config AUFS_FS
+-	bool "Aufs (Advanced multi layered unification filesystem) support"
++	tristate "Aufs (Advanced multi layered unification filesystem) support"
+ 	help
+ 	Aufs is a stackable unification filesystem such as Unionfs,
+ 	which unifies several directories and provides a merged single
+diff -Nurp linux-5.4-aufs/fs/dcache.c linux-5.4-aufs-mod/fs/dcache.c
+--- linux-5.4-aufs/fs/dcache.c	2019-11-28 01:25:59.069925618 +0200
++++ linux-5.4-aufs-mod/fs/dcache.c	2019-11-28 01:38:40.585895254 +0200
+@@ -1369,6 +1369,7 @@ rename_retry:
+ 	seq = 1;
+ 	goto again;
+ }
++EXPORT_SYMBOL_GPL(d_walk);
+ 
+ struct check_mount {
+ 	struct vfsmount *mnt;
+@@ -2914,6 +2915,7 @@ void d_exchange(struct dentry *dentry1,
+ 
+ 	write_sequnlock(&rename_lock);
+ }
++EXPORT_SYMBOL_GPL(d_exchange);
+ 
+ /**
+  * d_ancestor - search for an ancestor
+diff -Nurp linux-5.4-aufs/fs/exec.c linux-5.4-aufs-mod/fs/exec.c
+--- linux-5.4-aufs/fs/exec.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/fs/exec.c	2019-11-28 01:38:40.589895254 +0200
+@@ -110,6 +110,7 @@ bool path_noexec(const struct path *path
+ 	return (path->mnt->mnt_flags & MNT_NOEXEC) ||
+ 	       (path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC);
+ }
++EXPORT_SYMBOL_GPL(path_noexec);
+ 
+ #ifdef CONFIG_USELIB
+ /*
+diff -Nurp linux-5.4-aufs/fs/fcntl.c linux-5.4-aufs-mod/fs/fcntl.c
+--- linux-5.4-aufs/fs/fcntl.c	2019-11-28 01:25:59.069925618 +0200
++++ linux-5.4-aufs-mod/fs/fcntl.c	2019-11-28 01:38:40.589895254 +0200
+@@ -85,6 +85,7 @@ int setfl(int fd, struct file * filp, un
+  out:
+ 	return error;
+ }
++EXPORT_SYMBOL_GPL(setfl);
+ 
+ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
+                      int force)
+diff -Nurp linux-5.4-aufs/fs/file_table.c linux-5.4-aufs-mod/fs/file_table.c
+--- linux-5.4-aufs/fs/file_table.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/fs/file_table.c	2019-11-28 01:38:40.589895254 +0200
+@@ -162,6 +162,7 @@ over:
+ 	}
+ 	return ERR_PTR(-ENFILE);
+ }
++EXPORT_SYMBOL_GPL(alloc_empty_file);
+ 
+ /*
+  * Variant of alloc_empty_file() that doesn't check and modify nr_files.
+@@ -375,6 +377,7 @@ void __fput_sync(struct file *file)
+ }
+ 
+ EXPORT_SYMBOL(fput);
++EXPORT_SYMBOL_GPL(__fput_sync);
+ 
+ void __init files_init(void)
+ {
+diff -Nurp linux-5.4-aufs/fs/inode.c linux-5.4-aufs-mod/fs/inode.c
+--- linux-5.4-aufs/fs/inode.c	2019-11-28 01:25:59.070925617 +0200
++++ linux-5.4-aufs-mod/fs/inode.c	2019-11-28 01:38:40.589895254 +0200
+@@ -1682,6 +1682,7 @@ int update_time(struct inode *inode, str
+ 
+ 	return update_time(inode, time, flags);
+ }
++EXPORT_SYMBOL_GPL(update_time);
+ 
+ /**
+  *	touch_atime	-	update the access time
+diff -Nurp linux-5.4-aufs/fs/namespace.c linux-5.4-aufs-mod/fs/namespace.c
+--- linux-5.4-aufs/fs/namespace.c	2019-11-28 01:25:59.070925617 +0200
++++ linux-5.4-aufs-mod/fs/namespace.c	2019-11-28 01:38:40.589895254 +0200
+@@ -431,6 +431,7 @@ void __mnt_drop_write(struct vfsmount *m
+ 	mnt_dec_writers(real_mount(mnt));
+ 	preempt_enable();
+ }
++EXPORT_SYMBOL_GPL(__mnt_drop_write);
+ 
+ /**
+  * mnt_drop_write - give up write access to a mount
+@@ -781,6 +782,7 @@ int is_current_mnt_ns(struct vfsmount *m
+ {
+ 	return check_mnt(real_mount(mnt));
+ }
++EXPORT_SYMBOL_GPL(is_current_mnt_ns);
+ 
+ /*
+  * vfsmount lock must be held for write
+@@ -1903,6 +1905,7 @@ int iterate_mounts(int (*f)(struct vfsmo
+ 	}
+ 	return 0;
+ }
++EXPORT_SYMBOL_GPL(iterate_mounts);
+ 
+ static void lock_mnt_tree(struct mount *mnt)
+ {
+diff -Nurp linux-5.4-aufs/fs/notify/group.c linux-5.4-aufs-mod/fs/notify/group.c
+--- linux-5.4-aufs/fs/notify/group.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/fs/notify/group.c	2019-11-28 01:38:40.590895253 +0200
+@@ -99,6 +99,7 @@ void fsnotify_get_group(struct fsnotify_
+ {
+ 	refcount_inc(&group->refcnt);
+ }
++EXPORT_SYMBOL_GPL(fsnotify_get_group);
+ 
+ /*
+  * Drop a reference to a group.  Free it if it's through.
+diff -Nurp linux-5.4-aufs/fs/open.c linux-5.4-aufs-mod/fs/open.c
+--- linux-5.4-aufs/fs/open.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/fs/open.c	2019-11-28 01:38:48.762894928 +0200
+@@ -65,6 +65,7 @@ int do_truncate(struct dentry *dentry, l
+ 	inode_unlock(dentry->d_inode);
+ 	return ret;
+ }
++EXPORT_SYMBOL_GPL(do_truncate);
+ 
+ long vfs_truncate(const struct path *path, loff_t length)
+ {
+diff -Nurp linux-5.4-aufs/fs/read_write.c linux-5.4-aufs-mod/fs/read_write.c
+--- linux-5.4-aufs/fs/read_write.c	2019-11-28 01:25:59.070925617 +0200
++++ linux-5.4-aufs-mod/fs/read_write.c	2019-11-28 01:38:48.780894927 +0200
+@@ -468,6 +468,7 @@ ssize_t vfs_read(struct file *file, char
+ 
+ 	return ret;
+ }
++EXPORT_SYMBOL_GPL(vfs_read);
+ 
+ static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
+ {
+@@ -508,6 +509,7 @@ vfs_readf_t vfs_readf(struct file *file)
+ 		return new_sync_read;
+ 	return ERR_PTR(-ENOSYS);
+ }
++EXPORT_SYMBOL_GPL(vfs_readf);
+ 
+ vfs_writef_t vfs_writef(struct file *file)
+ {
+@@ -519,6 +521,7 @@ vfs_writef_t vfs_writef(struct file *fil
+ 		return new_sync_write;
+ 	return ERR_PTR(-ENOSYS);
+ }
++EXPORT_SYMBOL_GPL(vfs_writef);
+ 
+ ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos)
+ {
+@@ -588,6 +591,7 @@ ssize_t vfs_write(struct file *file, con
+ 
+ 	return ret;
+ }
++EXPORT_SYMBOL_GPL(vfs_write);
+ 
+ /* file_ppos returns &file->f_pos or NULL if file is stream */
+ static inline loff_t *file_ppos(struct file *file)
+diff -Nurp linux-5.4-aufs/fs/splice.c linux-5.4-aufs-mod/fs/splice.c
+--- linux-5.4-aufs/fs/splice.c	2019-11-28 01:25:59.071925617 +0200
++++ linux-5.4-aufs-mod/fs/splice.c	2019-11-28 01:38:48.780894927 +0200
+@@ -847,6 +847,7 @@ long do_splice_from(struct pipe_inode_in
+ 
+ 	return splice_write(pipe, out, ppos, len, flags);
+ }
++EXPORT_SYMBOL_GPL(do_splice_from);
+ 
+ /*
+  * Attempt to initiate a splice from a file to a pipe.
+@@ -876,6 +877,7 @@ long do_splice_to(struct file *in, loff_
+ 
+ 	return splice_read(in, ppos, pipe, len, flags);
+ }
++EXPORT_SYMBOL_GPL(do_splice_to);
+ 
+ /**
+  * splice_direct_to_actor - splices data directly between two non-pipes
+diff -Nurp linux-5.4-aufs/fs/sync.c linux-5.4-aufs-mod/fs/sync.c
+--- linux-5.4-aufs/fs/sync.c	2019-11-28 01:25:59.071925617 +0200
++++ linux-5.4-aufs-mod/fs/sync.c	2019-11-28 01:38:48.780894927 +0200
+@@ -39,6 +39,7 @@ int __sync_filesystem(struct super_block
+ 		sb->s_op->sync_fs(sb, wait);
+ 	return __sync_blockdev(sb->s_bdev, wait);
+ }
++EXPORT_SYMBOL_GPL(__sync_filesystem);
+ 
+ /*
+  * Write out and wait upon all dirty data associated with this
+diff -Nurp linux-5.4-aufs/fs/xattr.c linux-5.4-aufs-mod/fs/xattr.c
+--- linux-5.4-aufs/fs/xattr.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/fs/xattr.c	2019-11-28 01:38:48.780894927 +0200
+@@ -296,6 +296,7 @@ vfs_getxattr_alloc(struct dentry *dentry
+ 	*xattr_value = value;
+ 	return error;
+ }
++EXPORT_SYMBOL_GPL(vfs_getxattr_alloc);
+ 
+ ssize_t
+ __vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
+diff -Nurp linux-5.4-aufs/kernel/locking/lockdep.c linux-5.4-aufs-mod/kernel/locking/lockdep.c
+--- linux-5.4-aufs/kernel/locking/lockdep.c	2019-11-28 01:25:59.072925617 +0200
++++ linux-5.4-aufs-mod/kernel/locking/lockdep.c	2019-11-28 01:38:48.780894927 +0200
+@@ -174,6 +174,7 @@ inline struct lock_class *lockdep_hlock_
+ 	 */
+ 	return lock_classes + class_idx;
+ }
++EXPORT_SYMBOL_GPL(lockdep_hlock_class);
+ #define hlock_class(hlock) lockdep_hlock_class(hlock)
+ 
+ #ifdef CONFIG_LOCK_STAT
+diff -Nurp linux-5.4-aufs/kernel/task_work.c linux-5.4-aufs-mod/kernel/task_work.c
+--- linux-5.4-aufs/kernel/task_work.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/kernel/task_work.c	2019-11-28 01:38:48.786894927 +0200
+@@ -116,3 +116,4 @@ void task_work_run(void)
+ 		} while (work);
+ 	}
+ }
++EXPORT_SYMBOL_GPL(task_work_run);
+diff -Nurp linux-5.4-aufs/security/device_cgroup.c linux-5.4-aufs-mod/security/device_cgroup.c
+--- linux-5.4-aufs/security/device_cgroup.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/security/device_cgroup.c	2019-11-28 01:38:48.790894927 +0200
+@@ -824,3 +824,4 @@ int __devcgroup_check_permission(short t
+ 
+ 	return 0;
+ }
++EXPORT_SYMBOL_GPL(__devcgroup_check_permission);
+diff -Nurp linux-5.4-aufs/security/security.c linux-5.4-aufs-mod/security/security.c
+--- linux-5.4-aufs/security/security.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs-mod/security/security.c	2019-11-28 01:38:48.794894926 +0200
+@@ -1036,6 +1036,7 @@ int security_path_rmdir(const struct pat
+ 		return 0;
+ 	return call_int_hook(path_rmdir, 0, dir, dentry);
+ }
++EXPORT_SYMBOL_GPL(security_path_rmdir);
+ 
+ int security_path_unlink(const struct path *dir, struct dentry *dentry)
+ {
+@@ -1052,6 +1053,7 @@ int security_path_symlink(const struct p
+ 		return 0;
+ 	return call_int_hook(path_symlink, 0, dir, dentry, old_name);
+ }
++EXPORT_SYMBOL_GPL(security_path_symlink);
+ 
+ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
+ 		       struct dentry *new_dentry)
+@@ -1060,6 +1062,7 @@ int security_path_link(struct dentry *ol
+ 		return 0;
+ 	return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
+ }
++EXPORT_SYMBOL_GPL(security_path_link);
+ 
+ int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
+ 			 const struct path *new_dir, struct dentry *new_dentry,
+@@ -1087,6 +1090,7 @@ int security_path_truncate(const struct
+ 		return 0;
+ 	return call_int_hook(path_truncate, 0, path);
+ }
++EXPORT_SYMBOL_GPL(security_path_truncate);
+ 
+ int security_path_chmod(const struct path *path, umode_t mode)
+ {
+@@ -1094,6 +1098,7 @@ int security_path_chmod(const struct pat
+ 		return 0;
+ 	return call_int_hook(path_chmod, 0, path, mode);
+ }
++EXPORT_SYMBOL_GPL(security_path_chmod);
+ 
+ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
+ {
+@@ -1101,6 +1106,7 @@ int security_path_chown(const struct pat
+ 		return 0;
+ 	return call_int_hook(path_chown, 0, path, uid, gid);
+ }
++EXPORT_SYMBOL_GPL(security_path_chown);
+ 
+ int security_path_chroot(const struct path *path)
+ {
+@@ -1201,6 +1207,7 @@ int security_inode_permission(struct ino
+ 		return 0;
+ 	return call_int_hook(inode_permission, 0, inode, mask);
+ }
++EXPORT_SYMBOL_GPL(security_inode_permission);
+ 
+ int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
+ {
+@@ -1378,6 +1385,7 @@ int security_file_permission(struct file
+ 
+ 	return fsnotify_perm(file, mask);
+ }
++EXPORT_SYMBOL_GPL(security_file_permission);
+ 
+ int security_file_alloc(struct file *file)
+ {
diff --git a/kernel/kernel/files/patches/mageia/fs-aufs-5.4-version.patch b/kernel/kernel/files/patches/mageia/fs-aufs-5.4-version.patch
new file mode 100755
index 00000000..85c71bf3
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/fs-aufs-5.4-version.patch
@@ -0,0 +1,12 @@
+diff -Nurp linux-5.3-aufs/include/uapi/linux/aufs_type.h linux-5.3-aufs-ver/include/uapi/linux/aufs_type.h
+--- linux-5.3-aufs/include/uapi/linux/aufs_type.h	2019-09-24 16:13:44.012259519 +0300
++++ linux-5.3-aufs-ver/include/uapi/linux/aufs_type.h	2019-09-24 20:04:21.924707762 +0300
+@@ -27,7 +27,7 @@
+ 
+ #include <linux/limits.h>
+ 
+-#define AUFS_VERSION	"5.x-rcN"
++#define AUFS_VERSION	"5.4"
+ 
+ /* todo? move this to linux-2.6.19/include/magic.h */
+ #define AUFS_SUPER_MAGIC	('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
diff --git a/kernel/kernel/files/patches/mageia/fs-aufs-5.4.patch b/kernel/kernel/files/patches/mageia/fs-aufs-5.4.patch
new file mode 100644
index 00000000..0f717dbf
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/fs-aufs-5.4.patch
@@ -0,0 +1,37876 @@
+
+ Documentation/ABI/testing/debugfs-aufs                  |   55 
+ Documentation/ABI/testing/sysfs-aufs                    |   31 
+ Documentation/filesystems/aufs/README                   |  399 +++
+ Documentation/filesystems/aufs/design/01intro.txt       |  158 +
+ Documentation/filesystems/aufs/design/02struct.txt      |  245 ++
+ Documentation/filesystems/aufs/design/03atomic_open.txt |   72 
+ Documentation/filesystems/aufs/design/03lookup.txt      |  100 
+ Documentation/filesystems/aufs/design/04branch.txt      |   61 
+ Documentation/filesystems/aufs/design/05wbr_policy.txt  |   51 
+ Documentation/filesystems/aufs/design/06dirren.dot      |   31 
+ Documentation/filesystems/aufs/design/06dirren.txt      |   89 
+ Documentation/filesystems/aufs/design/06fhsm.txt        |  105 
+ Documentation/filesystems/aufs/design/06mmap.txt        |   59 
+ Documentation/filesystems/aufs/design/06xattr.txt       |   81 
+ Documentation/filesystems/aufs/design/07export.txt      |   45 
+ Documentation/filesystems/aufs/design/08shwh.txt        |   39 
+ Documentation/filesystems/aufs/design/10dynop.txt       |   34 
+ MAINTAINERS                                             |   13 
+ drivers/block/loop.c                                    |   18 
+ fs/Kconfig                                              |    1 
+ fs/Makefile                                             |    1 
+ fs/aufs/Kconfig                                         |  199 +
+ fs/aufs/Makefile                                        |   39 
+ fs/aufs/aufs.h                                          |   49 
+ fs/aufs/branch.c                                        | 1415 +++++++++++
+ fs/aufs/branch.h                                        |  353 ++
+ fs/aufs/cpup.c                                          | 1445 +++++++++++
+ fs/aufs/cpup.h                                          |   87 
+ fs/aufs/dbgaufs.c                                       |  513 ++++
+ fs/aufs/dbgaufs.h                                       |   40 
+ fs/aufs/dcsub.c                                         |  212 +
+ fs/aufs/dcsub.h                                         |  124 +
+ fs/aufs/debug.c                                         |  428 +++
+ fs/aufs/debug.h                                         |  213 +
+ fs/aufs/dentry.c                                        | 1141 +++++++++
+ fs/aufs/dentry.h                                        |  255 ++
+ fs/aufs/dinfo.c                                         |  541 ++++
+ fs/aufs/dir.c                                           |  750 ++++++
+ fs/aufs/dir.h                                           |  121 
+ fs/aufs/dirren.c                                        | 1303 ++++++++++
+ fs/aufs/dirren.h                                        |  127 +
+ fs/aufs/dynop.c                                         |  354 ++
+ fs/aufs/dynop.h                                         |   64 
+ fs/aufs/export.c                                        |  825 ++++++
+ fs/aufs/f_op.c                                          |  806 ++++++
+ fs/aufs/fhsm.c                                          |  413 +++
+ fs/aufs/file.c                                          |  850 ++++++
+ fs/aufs/file.h                                          |  329 ++
+ fs/aufs/finfo.c                                         |  136 +
+ fs/aufs/fstype.h                                        |  388 +++
+ fs/aufs/hbl.h                                           |   52 
+ fs/aufs/hfsnotify.c                                     |  275 ++
+ fs/aufs/hfsplus.c                                       |   47 
+ fs/aufs/hnotify.c                                       |  708 +++++
+ fs/aufs/i_op.c                                          | 1492 ++++++++++++
+ fs/aufs/i_op_add.c                                      |  923 +++++++
+ fs/aufs/i_op_del.c                                      |  500 ++++
+ fs/aufs/i_op_ren.c                                      | 1237 ++++++++++
+ fs/aufs/iinfo.c                                         |  273 ++
+ fs/aufs/inode.c                                         |  516 ++++
+ fs/aufs/inode.h                                         |  685 +++++
+ fs/aufs/ioctl.c                                         |  207 +
+ fs/aufs/lcnt.h                                          |  173 +
+ fs/aufs/loop.c                                          |  135 +
+ fs/aufs/loop.h                                          |   42 
+ fs/aufs/magic.mk                                        |   31 
+ fs/aufs/module.c                                        |  259 ++
+ fs/aufs/module.h                                        |  153 +
+ fs/aufs/mvdown.c                                        |  693 +++++
+ fs/aufs/opts.c                                          | 1867 +++++++++++++++
+ fs/aufs/opts.h                                          |  212 +
+ fs/aufs/plink.c                                         |  503 ++++
+ fs/aufs/poll.c                                          |   38 
+ fs/aufs/posix_acl.c                                     |   92 
+ fs/aufs/procfs.c                                        |  158 +
+ fs/aufs/rdu.c                                           |  371 +++
+ fs/aufs/rwsem.h                                         |   60 
+ fs/aufs/sbinfo.c                                        |  301 ++
+ fs/aufs/super.c                                         | 1034 ++++++++
+ fs/aufs/super.h                                         |  576 ++++
+ fs/aufs/sysaufs.c                                       |   80 
+ fs/aufs/sysaufs.h                                       |   89 
+ fs/aufs/sysfs.c                                         |  338 ++
+ fs/aufs/sysrq.c                                         |  147 +
+ fs/aufs/vdir.c                                          |  883 +++++++
+ fs/aufs/vfsub.c                                         |  889 +++++++
+ fs/aufs/vfsub.h                                         |  341 ++
+ fs/aufs/wbr_policy.c                                    |  817 ++++++
+ fs/aufs/whout.c                                         | 1049 ++++++++
+ fs/aufs/whout.h                                         |   73 
+ fs/aufs/wkq.c                                           |  379 +++
+ fs/aufs/wkq.h                                           |   76 
+ fs/aufs/xattr.c                                         |  343 ++
+ fs/aufs/xino.c                                          | 1952 ++++++++++++++++
+ fs/dcache.c                                             |    2 
+ fs/fcntl.c                                              |    4 
+ fs/inode.c                                              |    2 
+ fs/namespace.c                                          |    6 
+ fs/proc/base.c                                          |    2 
+ fs/proc/nommu.c                                         |    5 
+ fs/proc/task_mmu.c                                      |    7 
+ fs/proc/task_nommu.c                                    |    5 
+ fs/read_write.c                                         |   22 
+ fs/splice.c                                             |   10 
+ fs/sync.c                                               |    2 
+ include/linux/fs.h                                      |   10 
+ include/linux/lockdep.h                                 |    3 
+ include/linux/mm.h                                      |   22 
+ include/linux/mm_types.h                                |    2 
+ include/linux/mnt_namespace.h                           |    3 
+ include/linux/splice.h                                  |    6 
+ include/uapi/linux/aufs_type.h                          |  439 +++
+ kernel/fork.c                                           |    2 
+ kernel/locking/lockdep.c                                |    3 
+ mm/Makefile                                             |    2 
+ mm/filemap.c                                            |    2 
+ mm/mmap.c                                               |   33 
+ mm/nommu.c                                              |   10 
+ mm/prfile.c                                             |   86 
+ 119 files changed, 36936 insertions(+), 31 deletions(-)
+
+diff -Nurp linux-5.4/Documentation/ABI/testing/debugfs-aufs linux-5.4-aufs/Documentation/ABI/testing/debugfs-aufs
+--- linux-5.4/Documentation/ABI/testing/debugfs-aufs	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/ABI/testing/debugfs-aufs	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,55 @@
++What:		/debug/aufs/si_<id>/
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		Under /debug/aufs, a directory named si_<id> is created
++		per aufs mount, where <id> is a unique id generated
++		internally.
++
++What:		/debug/aufs/si_<id>/plink
++Date:		Apr 2013
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It has three lines and shows the information about the
++		pseudo-link. The first line is a single number
++		representing a number of buckets. The second line is a
++		number of pseudo-links per buckets (separated by a
++		blank). The last line is a single number representing a
++		total number of psedo-links.
++		When the aufs mount option 'noplink' is specified, it
++		will show "1\n0\n0\n".
++
++What:		/debug/aufs/si_<id>/xib
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the consumed blocks by xib (External Inode Number
++		Bitmap), its block size and file size.
++		When the aufs mount option 'noxino' is specified, it
++		will be empty. About XINO files, see the aufs manual.
++
++What:		/debug/aufs/si_<id>/xi0, xi1 ... xiN and xiN-N
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the consumed blocks by xino (External Inode Number
++		Translation Table), its link count, block size and file
++		size.
++		Due to the file size limit, there may exist multiple
++		xino files per branch.  In this case, "-N" is added to
++		the filename and it corresponds to the index of the
++		internal xino array.  "-0" is omitted.
++		When the aufs mount option 'noxino' is specified, Those
++		entries won't exist.  About XINO files, see the aufs
++		manual.
++
++What:		/debug/aufs/si_<id>/xigen
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the consumed blocks by xigen (External Inode
++		Generation Table), its block size and file size.
++		If CONFIG_AUFS_EXPORT is disabled, this entry will not
++		be created.
++		When the aufs mount option 'noxino' is specified, it
++		will be empty. About XINO files, see the aufs manual.
+diff -Nurp linux-5.4/Documentation/ABI/testing/sysfs-aufs linux-5.4-aufs/Documentation/ABI/testing/sysfs-aufs
+--- linux-5.4/Documentation/ABI/testing/sysfs-aufs	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/ABI/testing/sysfs-aufs	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,31 @@
++What:		/sys/fs/aufs/si_<id>/
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		Under /sys/fs/aufs, a directory named si_<id> is created
++		per aufs mount, where <id> is a unique id generated
++		internally.
++
++What:		/sys/fs/aufs/si_<id>/br0, br1 ... brN
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the abolute path of a member directory (which
++		is called branch) in aufs, and its permission.
++
++What:		/sys/fs/aufs/si_<id>/brid0, brid1 ... bridN
++Date:		July 2013
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the id of a member directory (which is called
++		branch) in aufs.
++
++What:		/sys/fs/aufs/si_<id>/xi_path
++Date:		March 2009
++Contact:	J. R. Okajima <hooanon05g@gmail.com>
++Description:
++		It shows the abolute path of XINO (External Inode Number
++		Bitmap, Translation Table and Generation Table) file
++		even if it is the default path.
++		When the aufs mount option 'noxino' is specified, it
++		will be empty. About XINO files, see the aufs manual.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/01intro.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/01intro.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/01intro.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/01intro.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,158 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Introduction
++----------------------------------------
++
++aufs [ei ju: ef es] | /ey-yoo-ef-es/ | [a u f s]
++1. abbrev. for "advanced multi-layered unification filesystem".
++2. abbrev. for "another unionfs".
++3. abbrev. for "auf das" in German which means "on the" in English.
++   Ex. "Butter aufs Brot"(G) means "butter onto bread"(E).
++   But "Filesystem aufs Filesystem" is hard to understand.
++4. abbrev. for "African Urban Fashion Show".
++
++AUFS is a filesystem with features:
++- multi layered stackable unification filesystem, the member directory
++  is called as a branch.
++- branch permission and attribute, 'readonly', 'real-readonly',
++  'readwrite', 'whiteout-able', 'link-able whiteout', etc. and their
++  combination.
++- internal "file copy-on-write".
++- logical deletion, whiteout.
++- dynamic branch manipulation, adding, deleting and changing permission.
++- allow bypassing aufs, user's direct branch access.
++- external inode number translation table and bitmap which maintains the
++  persistent aufs inode number.
++- seekable directory, including NFS readdir.
++- file mapping, mmap and sharing pages.
++- pseudo-link, hardlink over branches.
++- loopback mounted filesystem as a branch.
++- several policies to select one among multiple writable branches.
++- revert a single systemcall when an error occurs in aufs.
++- and more...
++
++
++Multi Layered Stackable Unification Filesystem
++----------------------------------------------------------------------
++Most people already knows what it is.
++It is a filesystem which unifies several directories and provides a
++merged single directory. When users access a file, the access will be
++passed/re-directed/converted (sorry, I am not sure which English word is
++correct) to the real file on the member filesystem. The member
++filesystem is called 'lower filesystem' or 'branch' and has a mode
++'readonly' and 'readwrite.' And the deletion for a file on the lower
++readonly branch is handled by creating 'whiteout' on the upper writable
++branch.
++
++On LKML, there have been discussions about UnionMount (Jan Blunck,
++Bharata B Rao and Valerie Aurora) and Unionfs (Erez Zadok). They took
++different approaches to implement the merged-view.
++The former tries putting it into VFS, and the latter implements as a
++separate filesystem.
++(If I misunderstand about these implementations, please let me know and
++I shall correct it. Because it is a long time ago when I read their
++source files last time).
++
++UnionMount's approach will be able to small, but may be hard to share
++branches between several UnionMount since the whiteout in it is
++implemented in the inode on branch filesystem and always
++shared. According to Bharata's post, readdir does not seems to be
++finished yet.
++There are several missing features known in this implementations such as
++- for users, the inode number may change silently. eg. copy-up.
++- link(2) may break by copy-up.
++- read(2) may get an obsoleted filedata (fstat(2) too).
++- fcntl(F_SETLK) may be broken by copy-up.
++- unnecessary copy-up may happen, for example mmap(MAP_PRIVATE) after
++  open(O_RDWR).
++
++In linux-3.18, "overlay" filesystem (formerly known as "overlayfs") was
++merged into mainline. This is another implementation of UnionMount as a
++separated filesystem. All the limitations and known problems which
++UnionMount are equally inherited to "overlay" filesystem.
++
++Unionfs has a longer history. When I started implementing a stackable
++filesystem (Aug 2005), it already existed. It has virtual super_block,
++inode, dentry and file objects and they have an array pointing lower
++same kind objects. After contributing many patches for Unionfs, I
++re-started my project AUFS (Jun 2006).
++
++In AUFS, the structure of filesystem resembles to Unionfs, but I
++implemented my own ideas, approaches and enhancements and it became
++totally different one.
++
++Comparing DM snapshot and fs based implementation
++- the number of bytes to be copied between devices is much smaller.
++- the type of filesystem must be one and only.
++- the fs must be writable, no readonly fs, even for the lower original
++  device. so the compression fs will not be usable. but if we use
++  loopback mount, we may address this issue.
++  for instance,
++	mount /cdrom/squashfs.img /sq
++	losetup /sq/ext2.img
++	losetup /somewhere/cow
++	dmsetup "snapshot /dev/loop0 /dev/loop1 ..."
++- it will be difficult (or needs more operations) to extract the
++  difference between the original device and COW.
++- DM snapshot-merge may help a lot when users try merging. in the
++  fs-layer union, users will use rsync(1).
++
++You may want to read my old paper "Filesystems in LiveCD"
++(http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf).
++
++
++Several characters/aspects/persona of aufs
++----------------------------------------------------------------------
++
++Aufs has several characters, aspects or persona.
++1. a filesystem, callee of VFS helper
++2. sub-VFS, caller of VFS helper for branches
++3. a virtual filesystem which maintains persistent inode number
++4. reader/writer of files on branches such like an application
++
++1. Callee of VFS Helper
++As an ordinary linux filesystem, aufs is a callee of VFS. For instance,
++unlink(2) from an application reaches sys_unlink() kernel function and
++then vfs_unlink() is called. vfs_unlink() is one of VFS helper and it
++calls filesystem specific unlink operation. Actually aufs implements the
++unlink operation but it behaves like a redirector.
++
++2. Caller of VFS Helper for Branches
++aufs_unlink() passes the unlink request to the branch filesystem as if
++it were called from VFS. So the called unlink operation of the branch
++filesystem acts as usual. As a caller of VFS helper, aufs should handle
++every necessary pre/post operation for the branch filesystem.
++- acquire the lock for the parent dir on a branch
++- lookup in a branch
++- revalidate dentry on a branch
++- mnt_want_write() for a branch
++- vfs_unlink() for a branch
++- mnt_drop_write() for a branch
++- release the lock on a branch
++
++3. Persistent Inode Number
++One of the most important issue for a filesystem is to maintain inode
++numbers. This is particularly important to support exporting a
++filesystem via NFS. Aufs is a virtual filesystem which doesn't have a
++backend block device for its own. But some storage is necessary to
++keep and maintain the inode numbers. It may be a large space and may not
++suit to keep in memory. Aufs rents some space from its first writable
++branch filesystem (by default) and creates file(s) on it. These files
++are created by aufs internally and removed soon (currently) keeping
++opened.
++Note: Because these files are removed, they are totally gone after
++      unmounting aufs. It means the inode numbers are not persistent
++      across unmount or reboot. I have a plan to make them really
++      persistent which will be important for aufs on NFS server.
++
++4. Read/Write Files Internally (copy-on-write)
++Because a branch can be readonly, when you write a file on it, aufs will
++"copy-up" it to the upper writable branch internally. And then write the
++originally requested thing to the file. Generally kernel doesn't
++open/read/write file actively. In aufs, even a single write may cause a
++internal "file copy". This behaviour is very similar to cp(1) command.
++
++Some people may think it is better to pass such work to user space
++helper, instead of doing in kernel space. Actually I am still thinking
++about it. But currently I have implemented it in kernel space.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/02struct.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/02struct.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/02struct.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/02struct.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,245 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Basic Aufs Internal Structure
++
++Superblock/Inode/Dentry/File Objects
++----------------------------------------------------------------------
++As like an ordinary filesystem, aufs has its own
++superblock/inode/dentry/file objects. All these objects have a
++dynamically allocated array and store the same kind of pointers to the
++lower filesystem, branch.
++For example, when you build a union with one readwrite branch and one
++readonly, mounted /au, /rw and /ro respectively.
++- /au = /rw + /ro
++- /ro/fileA exists but /rw/fileA
++
++Aufs lookup operation finds /ro/fileA and gets dentry for that. These
++pointers are stored in a aufs dentry. The array in aufs dentry will be,
++- [0] = NULL (because /rw/fileA doesn't exist)
++- [1] = /ro/fileA
++
++This style of an array is essentially same to the aufs
++superblock/inode/dentry/file objects.
++
++Because aufs supports manipulating branches, ie. add/delete/change
++branches dynamically, these objects has its own generation. When
++branches are changed, the generation in aufs superblock is
++incremented. And a generation in other object are compared when it is
++accessed. When a generation in other objects are obsoleted, aufs
++refreshes the internal array.
++
++
++Superblock
++----------------------------------------------------------------------
++Additionally aufs superblock has some data for policies to select one
++among multiple writable branches, XIB files, pseudo-links and kobject.
++See below in detail.
++About the policies which supports copy-down a directory, see
++wbr_policy.txt too.
++
++
++Branch and XINO(External Inode Number Translation Table)
++----------------------------------------------------------------------
++Every branch has its own xino (external inode number translation table)
++file. The xino file is created and unlinked by aufs internally. When two
++members of a union exist on the same filesystem, they share the single
++xino file.
++The struct of a xino file is simple, just a sequence of aufs inode
++numbers which is indexed by the lower inode number.
++In the above sample, assume the inode number of /ro/fileA is i111 and
++aufs assigns the inode number i999 for fileA. Then aufs writes 999 as
++4(8) bytes at 111 * 4(8) bytes offset in the xino file.
++
++When the inode numbers are not contiguous, the xino file will be sparse
++which has a hole in it and doesn't consume as much disk space as it
++might appear. If your branch filesystem consumes disk space for such
++holes, then you should specify 'xino=' option at mounting aufs.
++
++Aufs has a mount option to free the disk blocks for such holes in XINO
++files on tmpfs or ramdisk. But it is not so effective actually. If you
++meet a problem of disk shortage due to XINO files, then you should try
++"tmpfs-ino.patch" (and "vfs-ino.patch" too) in aufs4-standalone.git.
++The patch localizes the assignment inumbers per tmpfs-mount and avoid
++the holes in XINO files.
++
++Also a writable branch has three kinds of "whiteout bases". All these
++are existed when the branch is joined to aufs, and their names are
++whiteout-ed doubly, so that users will never see their names in aufs
++hierarchy.
++1. a regular file which will be hardlinked to all whiteouts.
++2. a directory to store a pseudo-link.
++3. a directory to store an "orphan"-ed file temporary.
++
++1. Whiteout Base
++   When you remove a file on a readonly branch, aufs handles it as a
++   logical deletion and creates a whiteout on the upper writable branch
++   as a hardlink of this file in order not to consume inode on the
++   writable branch.
++2. Pseudo-link Dir
++   See below, Pseudo-link.
++3. Step-Parent Dir
++   When "fileC" exists on the lower readonly branch only and it is
++   opened and removed with its parent dir, and then user writes
++   something into it, then aufs copies-up fileC to this
++   directory. Because there is no other dir to store fileC. After
++   creating a file under this dir, the file is unlinked.
++
++Because aufs supports manipulating branches, ie. add/delete/change
++dynamically, a branch has its own id. When the branch order changes,
++aufs finds the new index by searching the branch id.
++
++
++Pseudo-link
++----------------------------------------------------------------------
++Assume "fileA" exists on the lower readonly branch only and it is
++hardlinked to "fileB" on the branch. When you write something to fileA,
++aufs copies-up it to the upper writable branch. Additionally aufs
++creates a hardlink under the Pseudo-link Directory of the writable
++branch. The inode of a pseudo-link is kept in aufs super_block as a
++simple list. If fileB is read after unlinking fileA, aufs returns
++filedata from the pseudo-link instead of the lower readonly
++branch. Because the pseudo-link is based upon the inode, to keep the
++inode number by xino (see above) is essentially necessary.
++
++All the hardlinks under the Pseudo-link Directory of the writable branch
++should be restored in a proper location later. Aufs provides a utility
++to do this. The userspace helpers executed at remounting and unmounting
++aufs by default.
++During this utility is running, it puts aufs into the pseudo-link
++maintenance mode. In this mode, only the process which began the
++maintenance mode (and its child processes) is allowed to operate in
++aufs. Some other processes which are not related to the pseudo-link will
++be allowed to run too, but the rest have to return an error or wait
++until the maintenance mode ends. If a process already acquires an inode
++mutex (in VFS), it has to return an error.
++
++
++XIB(external inode number bitmap)
++----------------------------------------------------------------------
++Addition to the xino file per a branch, aufs has an external inode number
++bitmap in a superblock object. It is also an internal file such like a
++xino file.
++It is a simple bitmap to mark whether the aufs inode number is in-use or
++not.
++To reduce the file I/O, aufs prepares a single memory page to cache xib.
++
++As well as XINO files, aufs has a feature to truncate/refresh XIB to
++reduce the number of consumed disk blocks for these files.
++
++
++Virtual or Vertical Dir, and Readdir in Userspace
++----------------------------------------------------------------------
++In order to support multiple layers (branches), aufs readdir operation
++constructs a virtual dir block on memory. For readdir, aufs calls
++vfs_readdir() internally for each dir on branches, merges their entries
++with eliminating the whiteout-ed ones, and sets it to file (dir)
++object. So the file object has its entry list until it is closed. The
++entry list will be updated when the file position is zero and becomes
++obsoleted. This decision is made in aufs automatically.
++
++The dynamically allocated memory block for the name of entries has a
++unit of 512 bytes (by default) and stores the names contiguously (no
++padding). Another block for each entry is handled by kmem_cache too.
++During building dir blocks, aufs creates hash list and judging whether
++the entry is whiteouted by its upper branch or already listed.
++The merged result is cached in the corresponding inode object and
++maintained by a customizable life-time option.
++
++Some people may call it can be a security hole or invite DoS attack
++since the opened and once readdir-ed dir (file object) holds its entry
++list and becomes a pressure for system memory. But I'd say it is similar
++to files under /proc or /sys. The virtual files in them also holds a
++memory page (generally) while they are opened. When an idea to reduce
++memory for them is introduced, it will be applied to aufs too.
++For those who really hate this situation, I've developed readdir(3)
++library which operates this merging in userspace. You just need to set
++LD_PRELOAD environment variable, and aufs will not consume no memory in
++kernel space for readdir(3).
++
++
++Workqueue
++----------------------------------------------------------------------
++Aufs sometimes requires privilege access to a branch. For instance,
++in copy-up/down operation. When a user process is going to make changes
++to a file which exists in the lower readonly branch only, and the mode
++of one of ancestor directories may not be writable by a user
++process. Here aufs copy-up the file with its ancestors and they may
++require privilege to set its owner/group/mode/etc.
++This is a typical case of a application character of aufs (see
++Introduction).
++
++Aufs uses workqueue synchronously for this case. It creates its own
++workqueue. The workqueue is a kernel thread and has privilege. Aufs
++passes the request to call mkdir or write (for example), and wait for
++its completion. This approach solves a problem of a signal handler
++simply.
++If aufs didn't adopt the workqueue and changed the privilege of the
++process, then the process may receive the unexpected SIGXFSZ or other
++signals.
++
++Also aufs uses the system global workqueue ("events" kernel thread) too
++for asynchronous tasks, such like handling inotify/fsnotify, re-creating a
++whiteout base and etc. This is unrelated to a privilege.
++Most of aufs operation tries acquiring a rw_semaphore for aufs
++superblock at the beginning, at the same time waits for the completion
++of all queued asynchronous tasks.
++
++
++Whiteout
++----------------------------------------------------------------------
++The whiteout in aufs is very similar to Unionfs's. That is represented
++by its filename. UnionMount takes an approach of a file mode, but I am
++afraid several utilities (find(1) or something) will have to support it.
++
++Basically the whiteout represents "logical deletion" which stops aufs to
++lookup further, but also it represents "dir is opaque" which also stop
++further lookup.
++
++In aufs, rmdir(2) and rename(2) for dir uses whiteout alternatively.
++In order to make several functions in a single systemcall to be
++revertible, aufs adopts an approach to rename a directory to a temporary
++unique whiteouted name.
++For example, in rename(2) dir where the target dir already existed, aufs
++renames the target dir to a temporary unique whiteouted name before the
++actual rename on a branch, and then handles other actions (make it opaque,
++update the attributes, etc). If an error happens in these actions, aufs
++simply renames the whiteouted name back and returns an error. If all are
++succeeded, aufs registers a function to remove the whiteouted unique
++temporary name completely and asynchronously to the system global
++workqueue.
++
++
++Copy-up
++----------------------------------------------------------------------
++It is a well-known feature or concept.
++When user modifies a file on a readonly branch, aufs operate "copy-up"
++internally and makes change to the new file on the upper writable branch.
++When the trigger systemcall does not update the timestamps of the parent
++dir, aufs reverts it after copy-up.
++
++
++Move-down (aufs3.9 and later)
++----------------------------------------------------------------------
++"Copy-up" is one of the essential feature in aufs. It copies a file from
++the lower readonly branch to the upper writable branch when a user
++changes something about the file.
++"Move-down" is an opposite action of copy-up. Basically this action is
++ran manually instead of automatically and internally.
++For desgin and implementation, aufs has to consider these issues.
++- whiteout for the file may exist on the lower branch.
++- ancestor directories may not exist on the lower branch.
++- diropq for the ancestor directories may exist on the upper branch.
++- free space on the lower branch will reduce.
++- another access to the file may happen during moving-down, including
++  UDBA (see "Revalidate Dentry and UDBA").
++- the file should not be hard-linked nor pseudo-linked. they should be
++  handled by auplink utility later.
++
++Sometimes users want to move-down a file from the upper writable branch
++to the lower readonly or writable branch. For instance,
++- the free space of the upper writable branch is going to run out.
++- create a new intermediate branch between the upper and lower branch.
++- etc.
++
++For this purpose, use "aumvdown" command in aufs-util.git.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/03atomic_open.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/03atomic_open.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/03atomic_open.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/03atomic_open.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,72 @@
++
++# Copyright (C) 2015-2019 Junjiro R. Okajima
++
++Support for a branch who has its ->atomic_open()
++----------------------------------------------------------------------
++The filesystems who implement its ->atomic_open() are not majority. For
++example NFSv4 does, and aufs should call NFSv4 ->atomic_open,
++particularly for open(O_CREAT|O_EXCL, 0400) case. Other than
++->atomic_open(), NFSv4 returns an error for this open(2). While I am not
++sure whether all filesystems who have ->atomic_open() behave like this,
++but NFSv4 surely returns the error.
++
++In order to support ->atomic_open() for aufs, there are a few
++approaches.
++
++A. Introduce aufs_atomic_open()
++   - calls one of VFS:do_last(), lookup_open() or atomic_open() for
++     branch fs.
++B. Introduce aufs_atomic_open() calling create, open and chmod. this is
++   an aufs user Pip Cet's approach
++   - calls aufs_create(), VFS finish_open() and notify_change().
++   - pass fake-mode to finish_open(), and then correct the mode by
++     notify_change().
++C. Extend aufs_open() to call branch fs's ->atomic_open()
++   - no aufs_atomic_open().
++   - aufs_lookup() registers the TID to an aufs internal object.
++   - aufs_create() does nothing when the matching TID is registered, but
++     registers the mode.
++   - aufs_open() calls branch fs's ->atomic_open() when the matching
++     TID is registered.
++D. Extend aufs_open() to re-try branch fs's ->open() with superuser's
++   credential
++   - no aufs_atomic_open().
++   - aufs_create() registers the TID to an internal object. this info
++     represents "this process created this file just now."
++   - when aufs gets EACCES from branch fs's ->open(), then confirm the
++     registered TID and re-try open() with superuser's credential.
++
++Pros and cons for each approach.
++
++A.
++   - straightforward but highly depends upon VFS internal.
++   - the atomic behavaiour is kept.
++   - some of parameters such as nameidata are hard to reproduce for
++     branch fs.
++   - large overhead.
++B.
++   - easy to implement.
++   - the atomic behavaiour is lost.
++C.
++   - the atomic behavaiour is kept.
++   - dirty and tricky.
++   - VFS checks whether the file is created correctly after calling
++     ->create(), which means this approach doesn't work.
++D.
++   - easy to implement.
++   - the atomic behavaiour is lost.
++   - to open a file with superuser's credential and give it to a user
++     process is a bad idea, since the file object keeps the credential
++     in it. It may affect LSM or something. This approach doesn't work
++     either.
++
++The approach A is ideal, but it hard to implement. So here is a
++variation of A, which is to be implemented.
++
++A-1. Introduce aufs_atomic_open()
++     - calls branch fs ->atomic_open() if exists. otherwise calls
++       vfs_create() and finish_open().
++     - the demerit is that the several checks after branch fs
++       ->atomic_open() are lost. in the ordinary case, the checks are
++       done by VFS:do_last(), lookup_open() and atomic_open(). some can
++       be implemented in aufs, but not all I am afraid.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/03lookup.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/03lookup.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/03lookup.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/03lookup.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,100 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Lookup in a Branch
++----------------------------------------------------------------------
++Since aufs has a character of sub-VFS (see Introduction), it operates
++lookup for branches as VFS does. It may be a heavy work. But almost all
++lookup operation in aufs is the simplest case, ie. lookup only an entry
++directly connected to its parent. Digging down the directory hierarchy
++is unnecessary. VFS has a function lookup_one_len() for that use, and
++aufs calls it.
++
++When a branch is a remote filesystem, aufs basically relies upon its
++->d_revalidate(), also aufs forces the hardest revalidate tests for
++them.
++For d_revalidate, aufs implements three levels of revalidate tests. See
++"Revalidate Dentry and UDBA" in detail.
++
++
++Test Only the Highest One for the Directory Permission (dirperm1 option)
++----------------------------------------------------------------------
++Let's try case study.
++- aufs has two branches, upper readwrite and lower readonly.
++  /au = /rw + /ro
++- "dirA" exists under /ro, but /rw. and its mode is 0700.
++- user invoked "chmod a+rx /au/dirA"
++- the internal copy-up is activated and "/rw/dirA" is created and its
++  permission bits are set to world readable.
++- then "/au/dirA" becomes world readable?
++
++In this case, /ro/dirA is still 0700 since it exists in readonly branch,
++or it may be a natively readonly filesystem. If aufs respects the lower
++branch, it should not respond readdir request from other users. But user
++allowed it by chmod. Should really aufs rejects showing the entries
++under /ro/dirA?
++
++To be honest, I don't have a good solution for this case. So aufs
++implements 'dirperm1' and 'nodirperm1' mount options, and leave it to
++users.
++When dirperm1 is specified, aufs checks only the highest one for the
++directory permission, and shows the entries. Otherwise, as usual, checks
++every dir existing on all branches and rejects the request.
++
++As a side effect, dirperm1 option improves the performance of aufs
++because the number of permission check is reduced when the number of
++branch is many.
++
++
++Revalidate Dentry and UDBA (User's Direct Branch Access)
++----------------------------------------------------------------------
++Generally VFS helpers re-validate a dentry as a part of lookup.
++0. digging down the directory hierarchy.
++1. lock the parent dir by its i_mutex.
++2. lookup the final (child) entry.
++3. revalidate it.
++4. call the actual operation (create, unlink, etc.)
++5. unlock the parent dir
++
++If the filesystem implements its ->d_revalidate() (step 3), then it is
++called. Actually aufs implements it and checks the dentry on a branch is
++still valid.
++But it is not enough. Because aufs has to release the lock for the
++parent dir on a branch at the end of ->lookup() (step 2) and
++->d_revalidate() (step 3) while the i_mutex of the aufs dir is still
++held by VFS.
++If the file on a branch is changed directly, eg. bypassing aufs, after
++aufs released the lock, then the subsequent operation may cause
++something unpleasant result.
++
++This situation is a result of VFS architecture, ->lookup() and
++->d_revalidate() is separated. But I never say it is wrong. It is a good
++design from VFS's point of view. It is just not suitable for sub-VFS
++character in aufs.
++
++Aufs supports such case by three level of revalidation which is
++selectable by user.
++1. Simple Revalidate
++   Addition to the native flow in VFS's, confirm the child-parent
++   relationship on the branch just after locking the parent dir on the
++   branch in the "actual operation" (step 4). When this validation
++   fails, aufs returns EBUSY. ->d_revalidate() (step 3) in aufs still
++   checks the validation of the dentry on branches.
++2. Monitor Changes Internally by Inotify/Fsnotify
++   Addition to above, in the "actual operation" (step 4) aufs re-lookup
++   the dentry on the branch, and returns EBUSY if it finds different
++   dentry.
++   Additionally, aufs sets the inotify/fsnotify watch for every dir on branches
++   during it is in cache. When the event is notified, aufs registers a
++   function to kernel 'events' thread by schedule_work(). And the
++   function sets some special status to the cached aufs dentry and inode
++   private data. If they are not cached, then aufs has nothing to
++   do. When the same file is accessed through aufs (step 0-3) later,
++   aufs will detect the status and refresh all necessary data.
++   In this mode, aufs has to ignore the event which is fired by aufs
++   itself.
++3. No Extra Validation
++   This is the simplest test and doesn't add any additional revalidation
++   test, and skip the revalidation in step 4. It is useful and improves
++   aufs performance when system surely hide the aufs branches from user,
++   by over-mounting something (or another method).
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/04branch.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/04branch.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/04branch.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/04branch.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,61 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Branch Manipulation
++
++Since aufs supports dynamic branch manipulation, ie. add/remove a branch
++and changing its permission/attribute, there are a lot of works to do.
++
++
++Add a Branch
++----------------------------------------------------------------------
++o Confirm the adding dir exists outside of aufs, including loopback
++  mount, and its various attributes.
++o Initialize the xino file and whiteout bases if necessary.
++  See struct.txt.
++
++o Check the owner/group/mode of the directory
++  When the owner/group/mode of the adding directory differs from the
++  existing branch, aufs issues a warning because it may impose a
++  security risk.
++  For example, when a upper writable branch has a world writable empty
++  top directory, a malicious user can create any files on the writable
++  branch directly, like copy-up and modify manually. If something like
++  /etc/{passwd,shadow} exists on the lower readonly branch but the upper
++  writable branch, and the writable branch is world-writable, then a
++  malicious guy may create /etc/passwd on the writable branch directly
++  and the infected file will be valid in aufs.
++  I am afraid it can be a security issue, but aufs can do nothing except
++  producing a warning.
++
++
++Delete a Branch
++----------------------------------------------------------------------
++o Confirm the deleting branch is not busy
++  To be general, there is one merit to adopt "remount" interface to
++  manipulate branches. It is to discard caches. At deleting a branch,
++  aufs checks the still cached (and connected) dentries and inodes. If
++  there are any, then they are all in-use. An inode without its
++  corresponding dentry can be alive alone (for example, inotify/fsnotify case).
++
++  For the cached one, aufs checks whether the same named entry exists on
++  other branches.
++  If the cached one is a directory, because aufs provides a merged view
++  to users, as long as one dir is left on any branch aufs can show the
++  dir to users. In this case, the branch can be removed from aufs.
++  Otherwise aufs rejects deleting the branch.
++
++  If any file on the deleting branch is opened by aufs, then aufs
++  rejects deleting.
++
++
++Modify the Permission of a Branch
++----------------------------------------------------------------------
++o Re-initialize or remove the xino file and whiteout bases if necessary.
++  See struct.txt.
++
++o rw --> ro: Confirm the modifying branch is not busy
++  Aufs rejects the request if any of these conditions are true.
++  - a file on the branch is mmap-ed.
++  - a regular file on the branch is opened for write and there is no
++    same named entry on the upper branch.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/05wbr_policy.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/05wbr_policy.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/05wbr_policy.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/05wbr_policy.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,51 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Policies to Select One among Multiple Writable Branches
++----------------------------------------------------------------------
++When the number of writable branch is more than one, aufs has to decide
++the target branch for file creation or copy-up. By default, the highest
++writable branch which has the parent (or ancestor) dir of the target
++file is chosen (top-down-parent policy).
++By user's request, aufs implements some other policies to select the
++writable branch, for file creation several policies, round-robin,
++most-free-space, and other policies. For copy-up, top-down-parent,
++bottom-up-parent, bottom-up and others.
++
++As expected, the round-robin policy selects the branch in circular. When
++you have two writable branches and creates 10 new files, 5 files will be
++created for each branch. mkdir(2) systemcall is an exception. When you
++create 10 new directories, all will be created on the same branch.
++And the most-free-space policy selects the one which has most free
++space among the writable branches. The amount of free space will be
++checked by aufs internally, and users can specify its time interval.
++
++The policies for copy-up is more simple,
++top-down-parent is equivalent to the same named on in create policy,
++bottom-up-parent selects the writable branch where the parent dir
++exists and the nearest upper one from the copyup-source,
++bottom-up selects the nearest upper writable branch from the
++copyup-source, regardless the existence of the parent dir.
++
++There are some rules or exceptions to apply these policies.
++- If there is a readonly branch above the policy-selected branch and
++  the parent dir is marked as opaque (a variation of whiteout), or the
++  target (creating) file is whiteout-ed on the upper readonly branch,
++  then the result of the policy is ignored and the target file will be
++  created on the nearest upper writable branch than the readonly branch.
++- If there is a writable branch above the policy-selected branch and
++  the parent dir is marked as opaque or the target file is whiteouted
++  on the branch, then the result of the policy is ignored and the target
++  file will be created on the highest one among the upper writable
++  branches who has diropq or whiteout. In case of whiteout, aufs removes
++  it as usual.
++- link(2) and rename(2) systemcalls are exceptions in every policy.
++  They try selecting the branch where the source exists as possible
++  since copyup a large file will take long time. If it can't be,
++  ie. the branch where the source exists is readonly, then they will
++  follow the copyup policy.
++- There is an exception for rename(2) when the target exists.
++  If the rename target exists, aufs compares the index of the branches
++  where the source and the target exists and selects the higher
++  one. If the selected branch is readonly, then aufs follows the
++  copyup policy.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/06dirren.dot linux-5.4-aufs/Documentation/filesystems/aufs/design/06dirren.dot
+--- linux-5.4/Documentation/filesystems/aufs/design/06dirren.dot	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/06dirren.dot	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,31 @@
++
++// to view this graph, run dot(1) command in GRAPHVIZ.
++
++digraph G {
++node [shape=box];
++whinfo [label="detailed info file\n(lower_brid_root-hinum, h_inum, namelen, old name)"];
++
++node [shape=oval];
++
++aufs_rename -> whinfo [label="store/remove"];
++
++node [shape=oval];
++inode_list [label="h_inum list in branch\ncache"];
++
++node [shape=box];
++whinode [label="h_inum list file"];
++
++node [shape=oval];
++brmgmt [label="br_add/del/mod/umount"];
++
++brmgmt -> inode_list [label="create/remove"];
++brmgmt -> whinode [label="load/store"];
++
++inode_list -> whinode [style=dashed,dir=both];
++
++aufs_rename -> inode_list [label="add/del"];
++
++aufs_lookup -> inode_list [label="search"];
++
++aufs_lookup -> whinfo [label="load/remove"];
++}
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/06dirren.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/06dirren.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/06dirren.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/06dirren.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,89 @@
++
++# Copyright (C) 2017-2019 Junjiro R. Okajima
++
++Special handling for renaming a directory (DIRREN)
++----------------------------------------------------------------------
++First, let's assume we have a simple usecase.
++
++- /u = /rw + /ro
++- /rw/dirA exists
++- /ro/dirA and /ro/dirA/file exist too
++- there is no dirB on both branches
++- a user issues rename("dirA", "dirB")
++
++Now, what should aufs behave against this rename(2)?
++There are a few possible cases.
++
++A. returns EROFS.
++   since dirA exists on a readonly branch which cannot be renamed.
++B. returns EXDEV.
++   it is possible to copy-up dirA (only the dir itself), but the child
++   entries ("file" in this case) should not be. it must be a bad
++   approach to copy-up recursively.
++C. returns a success.
++   even the branch /ro is readonly, aufs tries renaming it. Obviously it
++   is a violation of aufs' policy.
++D. construct an extra information which indicates that /ro/dirA should
++   be handled as the name of dirB.
++   overlayfs has a similar feature called REDIRECT.
++
++Until now, aufs implements the case B only which returns EXDEV, and
++expects the userspace application behaves like mv(1) which tries
++issueing rename(2) recursively.
++
++A new aufs feature called DIRREN is introduced which implements the case
++D. There are several "extra information" added.
++
++1. detailed info per renamed directory
++   path: /rw/dirB/$AUFS_WH_DR_INFO_PFX.<lower branch-id>
++2. the inode-number list of directories on a branch
++   path: /rw/dirB/$AUFS_WH_DR_BRHINO
++
++The filename of "detailed info per directory" represents the lower
++branch, and its format is
++- a type of the branch id
++  one of these.
++  + uuid (not implemented yet)
++  + fsid
++  + dev
++- the inode-number of the branch root dir
++
++And it contains these info in a single regular file.
++- magic number
++- branch's inode-number of the logically renamed dir
++- the name of the before-renamed dir
++
++The "detailed info per directory" file is created in aufs rename(2), and
++loaded in any lookup.
++The info is considered in lookup for the matching case only. Here
++"matching" means that the root of branch (in the info filename) is same
++to the current looking-up branch. After looking-up the before-renamed
++name, the inode-number is compared. And the matched dentry is used.
++
++The "inode-number list of directories" is a regular file which contains
++simply the inode-numbers on the branch. The file is created or updated
++in removing the branch, and loaded in adding the branch. Its lifetime is
++equal to the branch.
++The list is refered in lookup, and when the current target inode is
++found in the list, the aufs tries loading the "detailed info per
++directory" and get the changed and valid name of the dir.
++
++Theoretically these "extra informaiton" may be able to be put into XATTR
++in the dir inode. But aufs doesn't choose this way because
++1. XATTR may not be supported by the branch (or its configuration)
++2. XATTR may have its size limit.
++3. XATTR may be less easy to convert than a regular file, when the
++   format of the info is changed in the future.
++At the same time, I agree that the regular file approach is much slower
++than XATTR approach. So, in the future, aufs may take the XATTR or other
++better approach.
++
++This DIRREN feature is enabled by aufs configuration, and is activated
++by a new mount option.
++
++For the more complicated case, there is a work with UDBA option, which
++is to dected the direct access to the branches (by-passing aufs) and to
++maintain the cashes in aufs. Since a single cached aufs dentry may
++contains two names, before- and after-rename, the name comparision in
++UDBA handler may not work correctly. In this case, the behaviour will be
++equivalen to udba=reval case.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/06fhsm.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/06fhsm.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/06fhsm.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/06fhsm.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,105 @@
++
++# Copyright (C) 2011-2019 Junjiro R. Okajima
++
++File-based Hierarchical Storage Management (FHSM)
++----------------------------------------------------------------------
++Hierarchical Storage Management (or HSM) is a well-known feature in the
++storage world. Aufs provides this feature as file-based with multiple
++writable branches, based upon the principle of "Colder, the Lower".
++Here the word "colder" means that the less used files, and "lower" means
++that the position in the order of the stacked branches vertically.
++These multiple writable branches are prioritized, ie. the topmost one
++should be the fastest drive and be used heavily.
++
++o Characters in aufs FHSM story
++- aufs itself and a new branch attribute.
++- a new ioctl interface to move-down and to establish a connection with
++  the daemon ("move-down" is a converse of "copy-up").
++- userspace tool and daemon.
++
++The userspace daemon establishes a connection with aufs and waits for
++the notification. The notified information is very similar to struct
++statfs containing the number of consumed blocks and inodes.
++When the consumed blocks/inodes of a branch exceeds the user-specified
++upper watermark, the daemon activates its move-down process until the
++consumed blocks/inodes reaches the user-specified lower watermark.
++
++The actual move-down is done by aufs based upon the request from
++user-space since we need to maintain the inode number and the internal
++pointer arrays in aufs.
++
++Currently aufs FHSM handles the regular files only. Additionally they
++must not be hard-linked nor pseudo-linked.
++
++
++o Cowork of aufs and the user-space daemon
++  During the userspace daemon established the connection, aufs sends a
++  small notification to it whenever aufs writes something into the
++  writable branch. But it may cost high since aufs issues statfs(2)
++  internally. So user can specify a new option to cache the
++  info. Actually the notification is controlled by these factors.
++  + the specified cache time.
++  + classified as "force" by aufs internally.
++  Until the specified time expires, aufs doesn't send the info
++  except the forced cases. When aufs decide forcing, the info is always
++  notified to userspace.
++  For example, the number of free inodes is generally large enough and
++  the shortage of it happens rarely. So aufs doesn't force the
++  notification when creating a new file, directory and others. This is
++  the typical case which aufs doesn't force.
++  When aufs writes the actual filedata and the files consumes any of new
++  blocks, the aufs forces notifying.
++
++
++o Interfaces in aufs
++- New branch attribute.
++  + fhsm
++    Specifies that the branch is managed by FHSM feature. In other word,
++    participant in the FHSM.
++    When nofhsm is set to the branch, it will not be the source/target
++    branch of the move-down operation. This attribute is set
++    independently from coo and moo attributes, and if you want full
++    FHSM, you should specify them as well.
++- New mount option.
++  + fhsm_sec
++    Specifies a second to suppress many less important info to be
++    notified.
++- New ioctl.
++  + AUFS_CTL_FHSM_FD
++    create a new file descriptor which userspace can read the notification
++    (a subset of struct statfs) from aufs.
++- Module parameter 'brs'
++  It has to be set to 1. Otherwise the new mount option 'fhsm' will not
++  be set.
++- mount helpers /sbin/mount.aufs and /sbin/umount.aufs
++  When there are two or more branches with fhsm attributes,
++  /sbin/mount.aufs invokes the user-space daemon and /sbin/umount.aufs
++  terminates it. As a result of remounting and branch-manipulation, the
++  number of branches with fhsm attribute can be one. In this case,
++  /sbin/mount.aufs will terminate the user-space daemon.
++
++
++Finally the operation is done as these steps in kernel-space.
++- make sure that,
++  + no one else is using the file.
++  + the file is not hard-linked.
++  + the file is not pseudo-linked.
++  + the file is a regular file.
++  + the parent dir is not opaqued.
++- find the target writable branch.
++- make sure the file is not whiteout-ed by the upper (than the target)
++  branch.
++- make the parent dir on the target branch.
++- mutex lock the inode on the branch.
++- unlink the whiteout on the target branch (if exists).
++- lookup and create the whiteout-ed temporary name on the target branch.
++- copy the file as the whiteout-ed temporary name on the target branch.
++- rename the whiteout-ed temporary name to the original name.
++- unlink the file on the source branch.
++- maintain the internal pointer array and the external inode number
++  table (XINO).
++- maintain the timestamps and other attributes of the parent dir and the
++  file.
++
++And of course, in every step, an error may happen. So the operation
++should restore the original file state after an error happens.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/06mmap.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/06mmap.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/06mmap.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/06mmap.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,59 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++mmap(2) -- File Memory Mapping
++----------------------------------------------------------------------
++In aufs, the file-mapped pages are handled by a branch fs directly, no
++interaction with aufs. It means aufs_mmap() calls the branch fs's
++->mmap().
++This approach is simple and good, but there is one problem.
++Under /proc, several entries show the mmapped files by its path (with
++device and inode number), and the printed path will be the path on the
++branch fs's instead of virtual aufs's.
++This is not a problem in most cases, but some utilities lsof(1) (and its
++user) may expect the path on aufs.
++
++To address this issue, aufs adds a new member called vm_prfile in struct
++vm_area_struct (and struct vm_region). The original vm_file points to
++the file on the branch fs in order to handle everything correctly as
++usual. The new vm_prfile points to a virtual file in aufs, and the
++show-functions in procfs refers to vm_prfile if it is set.
++Also we need to maintain several other places where touching vm_file
++such like
++- fork()/clone() copies vma and the reference count of vm_file is
++  incremented.
++- merging vma maintains the ref count too.
++
++This is not a good approach. It just fakes the printed path. But it
++leaves all behaviour around f_mapping unchanged. This is surely an
++advantage.
++Actually aufs had adopted another complicated approach which calls
++generic_file_mmap() and handles struct vm_operations_struct. In this
++approach, aufs met a hard problem and I could not solve it without
++switching the approach.
++
++There may be one more another approach which is
++- bind-mount the branch-root onto the aufs-root internally
++- grab the new vfsmount (ie. struct mount)
++- lazy-umount the branch-root internally
++- in open(2) the aufs-file, open the branch-file with the hidden
++  vfsmount (instead of the original branch's vfsmount)
++- ideally this "bind-mount and lazy-umount" should be done atomically,
++  but it may be possible from userspace by the mount helper.
++
++Adding the internal hidden vfsmount and using it in opening a file, the
++file path under /proc will be printed correctly. This approach looks
++smarter, but is not possible I am afraid.
++- aufs-root may be bind-mount later. when it happens, another hidden
++  vfsmount will be required.
++- it is hard to get the chance to bind-mount and lazy-umount
++  + in kernel-space, FS can have vfsmount in open(2) via
++    file->f_path, and aufs can know its vfsmount. But several locks are
++    already acquired, and if aufs tries to bind-mount and lazy-umount
++    here, then it may cause a deadlock.
++  + in user-space, bind-mount doesn't invoke the mount helper.
++- since /proc shows dev and ino, aufs has to give vma these info. it
++  means a new member vm_prinode will be necessary. this is essentially
++  equivalent to vm_prfile described above.
++
++I have to give up this "looks-smater" approach.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/06xattr.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/06xattr.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/06xattr.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/06xattr.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,81 @@
++
++# Copyright (C) 2014-2019 Junjiro R. Okajima
++
++Listing XATTR/EA and getting the value
++----------------------------------------------------------------------
++For the inode standard attributes (owner, group, timestamps, etc.), aufs
++shows the values from the topmost existing file. This behaviour is good
++for the non-dir entries since the bahaviour exactly matches the shown
++information. But for the directories, aufs considers all the same named
++entries on the lower branches. Which means, if one of the lower entry
++rejects readdir call, then aufs returns an error even if the topmost
++entry allows it. This behaviour is necessary to respect the branch fs's
++security, but can make users confused since the user-visible standard
++attributes don't match the behaviour.
++To address this issue, aufs has a mount option called dirperm1 which
++checks the permission for the topmost entry only, and ignores the lower
++entry's permission.
++
++A similar issue can happen around XATTR.
++getxattr(2) and listxattr(2) families behave as if dirperm1 option is
++always set. Otherwise these very unpleasant situation would happen.
++- listxattr(2) may return the duplicated entries.
++- users may not be able to remove or reset the XATTR forever,
++
++
++XATTR/EA support in the internal (copy,move)-(up,down)
++----------------------------------------------------------------------
++Generally the extended attributes of inode are categorized as these.
++- "security" for LSM and capability.
++- "system" for posix ACL, 'acl' mount option is required for the branch
++  fs generally.
++- "trusted" for userspace, CAP_SYS_ADMIN is required.
++- "user" for userspace, 'user_xattr' mount option is required for the
++  branch fs generally.
++
++Moreover there are some other categories. Aufs handles these rather
++unpopular categories as the ordinary ones, ie. there is no special
++condition nor exception.
++
++In copy-up, the support for XATTR on the dst branch may differ from the
++src branch. In this case, the copy-up operation will get an error and
++the original user operation which triggered the copy-up will fail. It
++can happen that even all copy-up will fail.
++When both of src and dst branches support XATTR and if an error occurs
++during copying XATTR, then the copy-up should fail obviously. That is a
++good reason and aufs should return an error to userspace. But when only
++the src branch support that XATTR, aufs should not return an error.
++For example, the src branch supports ACL but the dst branch doesn't
++because the dst branch may natively un-support it or temporary
++un-support it due to "noacl" mount option. Of course, the dst branch fs
++may NOT return an error even if the XATTR is not supported. It is
++totally up to the branch fs.
++
++Anyway when the aufs internal copy-up gets an error from the dst branch
++fs, then aufs tries removing the just copied entry and returns the error
++to the userspace. The worst case of this situation will be all copy-up
++will fail.
++
++For the copy-up operation, there two basic approaches.
++- copy the specified XATTR only (by category above), and return the
++  error unconditionally if it happens.
++- copy all XATTR, and ignore the error on the specified category only.
++
++In order to support XATTR and to implement the correct behaviour, aufs
++chooses the latter approach and introduces some new branch attributes,
++"icexsec", "icexsys", "icextr", "icexusr", and "icexoth".
++They correspond to the XATTR namespaces (see above). Additionally, to be
++convenient, "icex" is also provided which means all "icex*" attributes
++are set (here the word "icex" stands for "ignore copy-error on XATTR").
++
++The meaning of these attributes is to ignore the error from setting
++XATTR on that branch.
++Note that aufs tries copying all XATTR unconditionally, and ignores the
++error from the dst branch according to the specified attributes.
++
++Some XATTR may have its default value. The default value may come from
++the parent dir or the environment. If the default value is set at the
++file creating-time, it will be overwritten by copy-up.
++Some contradiction may happen I am afraid.
++Do we need another attribute to stop copying XATTR? I am unsure. For
++now, aufs implements the branch attributes to ignore the error.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/07export.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/07export.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/07export.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/07export.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,45 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Export Aufs via NFS
++----------------------------------------------------------------------
++Here is an approach.
++- like xino/xib, add a new file 'xigen' which stores aufs inode
++  generation.
++- iget_locked(): initialize aufs inode generation for a new inode, and
++  store it in xigen file.
++- destroy_inode(): increment aufs inode generation and store it in xigen
++  file. it is necessary even if it is not unlinked, because any data of
++  inode may be changed by UDBA.
++- encode_fh(): for a root dir, simply return FILEID_ROOT. otherwise
++  build file handle by
++  + branch id (4 bytes)
++  + superblock generation (4 bytes)
++  + inode number (4 or 8 bytes)
++  + parent dir inode number (4 or 8 bytes)
++  + inode generation (4 bytes))
++  + return value of exportfs_encode_fh() for the parent on a branch (4
++    bytes)
++  + file handle for a branch (by exportfs_encode_fh())
++- fh_to_dentry():
++  + find the index of a branch from its id in handle, and check it is
++    still exist in aufs.
++  + 1st level: get the inode number from handle and search it in cache.
++  + 2nd level: if not found in cache, get the parent inode number from
++    the handle and search it in cache. and then open the found parent
++    dir, find the matching inode number by vfs_readdir() and get its
++    name, and call lookup_one_len() for the target dentry.
++  + 3rd level: if the parent dir is not cached, call
++    exportfs_decode_fh() for a branch and get the parent on a branch,
++    build a pathname of it, convert it a pathname in aufs, call
++    path_lookup(). now aufs gets a parent dir dentry, then handle it as
++    the 2nd level.
++  + to open the dir, aufs needs struct vfsmount. aufs keeps vfsmount
++    for every branch, but not itself. to get this, (currently) aufs
++    searches in current->nsproxy->mnt_ns list. it may not be a good
++    idea, but I didn't get other approach.
++  + test the generation of the gotten inode.
++- every inode operation: they may get EBUSY due to UDBA. in this case,
++  convert it into ESTALE for NFSD.
++- readdir(): call lockdep_on/off() because filldir in NFSD calls
++  lookup_one_len(), vfs_getattr(), encode_fh() and others.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/08shwh.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/08shwh.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/08shwh.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/08shwh.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,39 @@
++
++# Copyright (C) 2005-2019 Junjiro R. Okajima
++
++Show Whiteout Mode (shwh)
++----------------------------------------------------------------------
++Generally aufs hides the name of whiteouts. But in some cases, to show
++them is very useful for users. For instance, creating a new middle layer
++(branch) by merging existing layers.
++
++(borrowing aufs1 HOW-TO from a user, Michael Towers)
++When you have three branches,
++- Bottom: 'system', squashfs (underlying base system), read-only
++- Middle: 'mods', squashfs, read-only
++- Top: 'overlay', ram (tmpfs), read-write
++
++The top layer is loaded at boot time and saved at shutdown, to preserve
++the changes made to the system during the session.
++When larger changes have been made, or smaller changes have accumulated,
++the size of the saved top layer data grows. At this point, it would be
++nice to be able to merge the two overlay branches ('mods' and 'overlay')
++and rewrite the 'mods' squashfs, clearing the top layer and thus
++restoring save and load speed.
++
++This merging is simplified by the use of another aufs mount, of just the
++two overlay branches using the 'shwh' option.
++# mount -t aufs -o ro,shwh,br:/livesys/overlay=ro+wh:/livesys/mods=rr+wh \
++	aufs /livesys/merge_union
++
++A merged view of these two branches is then available at
++/livesys/merge_union, and the new feature is that the whiteouts are
++visible!
++Note that in 'shwh' mode the aufs mount must be 'ro', which will disable
++writing to all branches. Also the default mode for all branches is 'ro'.
++It is now possible to save the combined contents of the two overlay
++branches to a new squashfs, e.g.:
++# mksquashfs /livesys/merge_union /path/to/newmods.squash
++
++This new squashfs archive can be stored on the boot device and the
++initramfs will use it to replace the old one at the next boot.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/design/10dynop.txt linux-5.4-aufs/Documentation/filesystems/aufs/design/10dynop.txt
+--- linux-5.4/Documentation/filesystems/aufs/design/10dynop.txt	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/design/10dynop.txt	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,34 @@
++
++# Copyright (C) 2010-2019 Junjiro R. Okajima
++
++Dynamically customizable FS operations
++----------------------------------------------------------------------
++Generally FS operations (struct inode_operations, struct
++address_space_operations, struct file_operations, etc.) are defined as
++"static const", but it never means that FS have only one set of
++operation. Some FS have multiple sets of them. For instance, ext2 has
++three sets, one for XIP, for NOBH, and for normal.
++Since aufs overrides and redirects these operations, sometimes aufs has
++to change its behaviour according to the branch FS type. More importantly
++VFS acts differently if a function (member in the struct) is set or
++not. It means aufs should have several sets of operations and select one
++among them according to the branch FS definition.
++
++In order to solve this problem and not to affect the behaviour of VFS,
++aufs defines these operations dynamically. For instance, aufs defines
++dummy direct_IO function for struct address_space_operations, but it may
++not be set to the address_space_operations actually. When the branch FS
++doesn't have it, aufs doesn't set it to its address_space_operations
++while the function definition itself is still alive. So the behaviour
++itself will not change, and it will return an error when direct_IO is
++not set.
++
++The lifetime of these dynamically generated operation object is
++maintained by aufs branch object. When the branch is removed from aufs,
++the reference counter of the object is decremented. When it reaches
++zero, the dynamically generated operation object will be freed.
++
++This approach is designed to support AIO (io_submit), Direct I/O and
++XIP (DAX) mainly.
++Currently this approach is applied to address_space_operations for
++regular files only.
+diff -Nurp linux-5.4/Documentation/filesystems/aufs/README linux-5.4-aufs/Documentation/filesystems/aufs/README
+--- linux-5.4/Documentation/filesystems/aufs/README	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/Documentation/filesystems/aufs/README	2019-11-28 01:25:59.060925618 +0200
+@@ -0,0 +1,399 @@
++
++Aufs5 -- advanced multi layered unification filesystem version 5.x
++http://aufs.sf.net
++Junjiro R. Okajima
++
++
++0. Introduction
++----------------------------------------
++In the early days, aufs was entirely re-designed and re-implemented
++Unionfs Version 1.x series. Adding many original ideas, approaches,
++improvements and implementations, it became totally different from
++Unionfs while keeping the basic features.
++Later, Unionfs Version 2.x series began taking some of the same
++approaches to aufs1's.
++Unionfs was being developed by Professor Erez Zadok at Stony Brook
++University and his team.
++
++Aufs5 supports linux-v5.0 and later, If you want older kernel version
++support,
++- for linux-v4.x series, try aufs4-linux.git or aufs4-standalone.git
++- for linux-v3.x series, try aufs3-linux.git or aufs3-standalone.git
++- for linux-v2.6.16 and later, try aufs2-2.6.git, aufs2-standalone.git
++  or aufs1 from CVS on SourceForge.
++
++Note: it becomes clear that "Aufs was rejected. Let's give it up."
++      According to Christoph Hellwig, linux rejects all union-type
++      filesystems but UnionMount.
++<http://marc.info/?l=linux-kernel&m=123938533724484&w=2>
++
++PS. Al Viro seems have a plan to merge aufs as well as overlayfs and
++    UnionMount, and he pointed out an issue around a directory mutex
++    lock and aufs addressed it. But it is still unsure whether aufs will
++    be merged (or any other union solution).
++<http://marc.info/?l=linux-kernel&m=136312705029295&w=1>
++
++
++1. Features
++----------------------------------------
++- unite several directories into a single virtual filesystem. The member
++  directory is called as a branch.
++- you can specify the permission flags to the branch, which are 'readonly',
++  'readwrite' and 'whiteout-able.'
++- by upper writable branch, internal copyup and whiteout, files/dirs on
++  readonly branch are modifiable logically.
++- dynamic branch manipulation, add, del.
++- etc...
++
++Also there are many enhancements in aufs, such as:
++- test only the highest one for the directory permission (dirperm1)
++- copyup on open (coo=)
++- 'move' policy for copy-up between two writable branches, after
++  checking free space.
++- xattr, acl
++- readdir(3) in userspace.
++- keep inode number by external inode number table
++- keep the timestamps of file/dir in internal copyup operation
++- seekable directory, supporting NFS readdir.
++- whiteout is hardlinked in order to reduce the consumption of inodes
++  on branch
++- do not copyup, nor create a whiteout when it is unnecessary
++- revert a single systemcall when an error occurs in aufs
++- remount interface instead of ioctl
++- maintain /etc/mtab by an external command, /sbin/mount.aufs.
++- loopback mounted filesystem as a branch
++- kernel thread for removing the dir who has a plenty of whiteouts
++- support copyup sparse file (a file which has a 'hole' in it)
++- default permission flags for branches
++- selectable permission flags for ro branch, whether whiteout can
++  exist or not
++- export via NFS.
++- support <sysfs>/fs/aufs and <debugfs>/aufs.
++- support multiple writable branches, some policies to select one
++  among multiple writable branches.
++- a new semantics for link(2) and rename(2) to support multiple
++  writable branches.
++- no glibc changes are required.
++- pseudo hardlink (hardlink over branches)
++- allow a direct access manually to a file on branch, e.g. bypassing aufs.
++  including NFS or remote filesystem branch.
++- userspace wrapper for pathconf(3)/fpathconf(3) with _PC_LINK_MAX.
++- and more...
++
++Currently these features are dropped temporary from aufs5.
++See design/08plan.txt in detail.
++- nested mount, i.e. aufs as readonly no-whiteout branch of another aufs
++  (robr)
++- statistics of aufs thread (/sys/fs/aufs/stat)
++
++Features or just an idea in the future (see also design/*.txt),
++- reorder the branch index without del/re-add.
++- permanent xino files for NFSD
++- an option for refreshing the opened files after add/del branches
++- light version, without branch manipulation. (unnecessary?)
++- copyup in userspace
++- inotify in userspace
++- readv/writev
++
++
++2. Download
++----------------------------------------
++There are three GIT trees for aufs5, aufs5-linux.git,
++aufs5-standalone.git, and aufs-util.git. Note that there is no "5" in
++"aufs-util.git."
++While the aufs-util is always necessary, you need either of aufs5-linux
++or aufs5-standalone.
++
++The aufs5-linux tree includes the whole linux mainline GIT tree,
++git://git.kernel.org/.../torvalds/linux.git.
++And you cannot select CONFIG_AUFS_FS=m for this version, eg. you cannot
++build aufs5 as an external kernel module.
++Several extra patches are not included in this tree. Only
++aufs5-standalone tree contains them. They are described in the later
++section "Configuration and Compilation."
++
++On the other hand, the aufs5-standalone tree has only aufs source files
++and necessary patches, and you can select CONFIG_AUFS_FS=m.
++But you need to apply all aufs patches manually.
++
++You will find GIT branches whose name is in form of "aufs5.x" where "x"
++represents the linux kernel version, "linux-5.x". For instance,
++"aufs5.0" is for linux-5.0. For latest "linux-5.x-rcN", use
++"aufs5.x-rcN" branch.
++
++o aufs5-linux tree
++$ git clone --reference /your/linux/git/tree \
++	git://github.com/sfjro/aufs5-linux.git aufs5-linux.git
++- if you don't have linux GIT tree, then remove "--reference ..."
++$ cd aufs5-linux.git
++$ git checkout origin/aufs5.0
++
++Or You may want to directly git-pull aufs into your linux GIT tree, and
++leave the patch-work to GIT.
++$ cd /your/linux/git/tree
++$ git remote add aufs5 git://github.com/sfjro/aufs5-linux.git
++$ git fetch aufs5
++$ git checkout -b my5.0 v5.0
++$ (add your local change...)
++$ git pull aufs5 aufs5.0
++- now you have v5.0 + your_changes + aufs5.0 in you my5.0 branch.
++- you may need to solve some conflicts between your_changes and
++  aufs5.0. in this case, git-rerere is recommended so that you can
++  solve the similar conflicts automatically when you upgrade to 5.1 or
++  later in the future.
++
++o aufs5-standalone tree
++$ git clone git://github.com/sfjro/aufs5-standalone.git aufs5-standalone.git
++$ cd aufs5-standalone.git
++$ git checkout origin/aufs5.0
++
++o aufs-util tree
++$ git clone git://git.code.sf.net/p/aufs/aufs-util aufs-util.git
++- note that the public aufs-util.git is on SourceForge instead of
++  GitHUB.
++$ cd aufs-util.git
++$ git checkout origin/aufs5.0
++
++Note: The 5.x-rcN branch is to be used with `rc' kernel versions ONLY.
++The minor version number, 'x' in '5.x', of aufs may not always
++follow the minor version number of the kernel.
++Because changes in the kernel that cause the use of a new
++minor version number do not always require changes to aufs-util.
++
++Since aufs-util has its own minor version number, you may not be
++able to find a GIT branch in aufs-util for your kernel's
++exact minor version number.
++In this case, you should git-checkout the branch for the
++nearest lower number.
++
++For (an unreleased) example:
++If you are using "linux-5.10" and the "aufs5.10" branch
++does not exist in aufs-util repository, then "aufs5.9", "aufs5.8"
++or something numerically smaller is the branch for your kernel.
++
++Also you can view all branches by
++	$ git branch -a
++
++
++3. Configuration and Compilation
++----------------------------------------
++Make sure you have git-checkout'ed the correct branch.
++
++For aufs5-linux tree,
++- enable CONFIG_AUFS_FS.
++- set other aufs configurations if necessary.
++
++For aufs5-standalone tree,
++There are several ways to build.
++
++1.
++- apply ./aufs5-kbuild.patch to your kernel source files.
++- apply ./aufs5-base.patch too.
++- apply ./aufs5-mmap.patch too.
++- apply ./aufs5-standalone.patch too, if you have a plan to set
++  CONFIG_AUFS_FS=m. otherwise you don't need ./aufs5-standalone.patch.
++- copy ./{Documentation,fs,include/uapi/linux/aufs_type.h} files to your
++  kernel source tree. Never copy $PWD/include/uapi/linux/Kbuild.
++- enable CONFIG_AUFS_FS, you can select either
++  =m or =y.
++- and build your kernel as usual.
++- install the built kernel.
++- install the header files too by "make headers_install" to the
++  directory where you specify. By default, it is $PWD/usr.
++  "make help" shows a brief note for headers_install.
++- and reboot your system.
++
++2.
++- module only (CONFIG_AUFS_FS=m).
++- apply ./aufs5-base.patch to your kernel source files.
++- apply ./aufs5-mmap.patch too.
++- apply ./aufs5-standalone.patch too.
++- build your kernel, don't forget "make headers_install", and reboot.
++- edit ./config.mk and set other aufs configurations if necessary.
++  Note: You should read $PWD/fs/aufs/Kconfig carefully which describes
++  every aufs configurations.
++- build the module by simple "make".
++- you can specify ${KDIR} make variable which points to your kernel
++  source tree.
++- install the files
++  + run "make install" to install the aufs module, or copy the built
++    $PWD/aufs.ko to /lib/modules/... and run depmod -a (or reboot simply).
++  + run "make install_headers" (instead of headers_install) to install
++    the modified aufs header file (you can specify DESTDIR which is
++    available in aufs standalone version's Makefile only), or copy
++    $PWD/usr/include/linux/aufs_type.h to /usr/include/linux or wherever
++    you like manually. By default, the target directory is $PWD/usr.
++- no need to apply aufs5-kbuild.patch, nor copying source files to your
++  kernel source tree.
++
++Note: The header file aufs_type.h is necessary to build aufs-util
++      as well as "make headers_install" in the kernel source tree.
++      headers_install is subject to be forgotten, but it is essentially
++      necessary, not only for building aufs-util.
++      You may not meet problems without headers_install in some older
++      version though.
++
++And then,
++- read README in aufs-util, build and install it
++- note that your distribution may contain an obsoleted version of
++  aufs_type.h in /usr/include/linux or something. When you build aufs
++  utilities, make sure that your compiler refers the correct aufs header
++  file which is built by "make headers_install."
++- if you want to use readdir(3) in userspace or pathconf(3) wrapper,
++  then run "make install_ulib" too. And refer to the aufs manual in
++  detail.
++
++There several other patches in aufs5-standalone.git. They are all
++optional. When you meet some problems, they will help you.
++- aufs5-loopback.patch
++  Supports a nested loopback mount in a branch-fs. This patch is
++  unnecessary until aufs produces a message like "you may want to try
++  another patch for loopback file".
++- proc_mounts.patch
++  When there are many mountpoints and many mount(2)/umount(2) are
++  running, then /proc/mounts may not show the all mountpoints.  This
++  patch makes /proc/mounts always show the full mountpoints list.
++  If you don't want to apply this patch and meet such problem, then you
++  need to increase the value of 'ProcMounts_Times' make-variable in
++  aufs-util.git as a second best solution.
++- vfs-ino.patch
++  Modifies a system global kernel internal function get_next_ino() in
++  order to stop assigning 0 for an inode-number. Not directly related to
++  aufs, but recommended generally.
++- tmpfs-idr.patch
++  Keeps the tmpfs inode number as the lowest value. Effective to reduce
++  the size of aufs XINO files for tmpfs branch. Also it prevents the
++  duplication of inode number, which is important for backup tools and
++  other utilities. When you find aufs XINO files for tmpfs branch
++  growing too much, try this patch.
++- lockdep-debug.patch
++  Because aufs is not only an ordinary filesystem (callee of VFS), but
++  also a caller of VFS functions for branch filesystems, subclassing of
++  the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging
++  feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will
++  need to apply this debug patch to expand several constant values.
++  If don't know what LOCKDEP is, then you don't have apply this patch.
++
++
++4. Usage
++----------------------------------------
++At first, make sure aufs-util are installed, and please read the aufs
++manual, aufs.5 in aufs-util.git tree.
++$ man -l aufs.5
++
++And then,
++$ mkdir /tmp/rw /tmp/aufs
++# mount -t aufs -o br=/tmp/rw:${HOME} none /tmp/aufs
++
++Here is another example. The result is equivalent.
++# mount -t aufs -o br=/tmp/rw=rw:${HOME}=ro none /tmp/aufs
++  Or
++# mount -t aufs -o br:/tmp/rw none /tmp/aufs
++# mount -o remount,append:${HOME} /tmp/aufs
++
++Then, you can see whole tree of your home dir through /tmp/aufs. If
++you modify a file under /tmp/aufs, the one on your home directory is
++not affected, instead the same named file will be newly created under
++/tmp/rw. And all of your modification to a file will be applied to
++the one under /tmp/rw. This is called the file based Copy on Write
++(COW) method.
++Aufs mount options are described in aufs.5.
++If you run chroot or something and make your aufs as a root directory,
++then you need to customize the shutdown script. See the aufs manual in
++detail.
++
++Additionally, there are some sample usages of aufs which are a
++diskless system with network booting, and LiveCD over NFS.
++See sample dir in CVS tree on SourceForge.
++
++
++5. Contact
++----------------------------------------
++When you have any problems or strange behaviour in aufs, please let me
++know with:
++- /proc/mounts (instead of the output of mount(8))
++- /sys/module/aufs/*
++- /sys/fs/aufs/* (if you have them)
++- /debug/aufs/* (if you have them)
++- linux kernel version
++  if your kernel is not plain, for example modified by distributor,
++  the url where i can download its source is necessary too.
++- aufs version which was printed at loading the module or booting the
++  system, instead of the date you downloaded.
++- configuration (define/undefine CONFIG_AUFS_xxx)
++- kernel configuration or /proc/config.gz (if you have it)
++- behaviour which you think to be incorrect
++- actual operation, reproducible one is better
++- mailto: aufs-users at lists.sourceforge.net
++
++Usually, I don't watch the Public Areas(Bugs, Support Requests, Patches,
++and Feature Requests) on SourceForge. Please join and write to
++aufs-users ML.
++
++
++6. Acknowledgements
++----------------------------------------
++Thanks to everyone who have tried and are using aufs, whoever
++have reported a bug or any feedback.
++
++Especially donators:
++Tomas Matejicek(slax.org) made a donation (much more than once).
++	Since Apr 2010, Tomas M (the author of Slax and Linux Live
++	scripts) is making "doubling" donations.
++	Unfortunately I cannot list all of the donators, but I really
++	appreciate.
++	It ends Aug 2010, but the ordinary donation URL is still available.
++	<http://sourceforge.net/donate/index.php?group_id=167503>
++Dai Itasaka made a donation (2007/8).
++Chuck Smith made a donation (2008/4, 10 and 12).
++Henk Schoneveld made a donation (2008/9).
++Chih-Wei Huang, ASUS, CTC donated Eee PC 4G (2008/10).
++Francois Dupoux made a donation (2008/11).
++Bruno Cesar Ribas and Luis Carlos Erpen de Bona, C3SL serves public
++	aufs2 GIT tree (2009/2).
++William Grant made a donation (2009/3).
++Patrick Lane made a donation (2009/4).
++The Mail Archive (mail-archive.com) made donations (2009/5).
++Nippy Networks (Ed Wildgoose) made a donation (2009/7).
++New Dream Network, LLC (www.dreamhost.com) made a donation (2009/11).
++Pavel Pronskiy made a donation (2011/2).
++Iridium and Inmarsat satellite phone retailer (www.mailasail.com), Nippy
++	Networks (Ed Wildgoose) made a donation for hardware (2011/3).
++Max Lekomcev (DOM-TV project) made a donation (2011/7, 12, 2012/3, 6 and
++11).
++Sam Liddicott made a donation (2011/9).
++Era Scarecrow made a donation (2013/4).
++Bor Ratajc made a donation (2013/4).
++Alessandro Gorreta made a donation (2013/4).
++POIRETTE Marc made a donation (2013/4).
++Alessandro Gorreta made a donation (2013/4).
++lauri kasvandik made a donation (2013/5).
++"pemasu from Finland" made a donation (2013/7).
++The Parted Magic Project made a donation (2013/9 and 11).
++Pavel Barta made a donation (2013/10).
++Nikolay Pertsev made a donation (2014/5).
++James B made a donation (2014/7 and 2015/7).
++Stefano Di Biase made a donation (2014/8).
++Daniel Epellei made a donation (2015/1).
++OmegaPhil made a donation (2016/1, 2018/4).
++Tomasz Szewczyk made a donation (2016/4).
++James Burry made a donation (2016/12).
++Carsten Rose made a donation (2018/9).
++Porteus Kiosk made a donation (2018/10).
++
++Thank you very much.
++Donations are always, including future donations, very important and
++helpful for me to keep on developing aufs.
++
++
++7.
++----------------------------------------
++If you are an experienced user, no explanation is needed. Aufs is
++just a linux filesystem.
++
++
++Enjoy!
++
++# Local variables: ;
++# mode: text;
++# End: ;
+diff -Nurp linux-5.4/drivers/block/loop.c linux-5.4-aufs/drivers/block/loop.c
+--- linux-5.4/drivers/block/loop.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/drivers/block/loop.c	2019-11-28 01:25:59.062925618 +0200
+@@ -738,6 +738,24 @@ out_err:
+ 	return error;
+ }
+ 
++/*
++ * for AUFS
++ * no get/put for file.
++ */
++struct file *loop_backing_file(struct super_block *sb)
++{
++	struct file *ret;
++	struct loop_device *l;
++
++	ret = NULL;
++	if (MAJOR(sb->s_dev) == LOOP_MAJOR) {
++		l = sb->s_bdev->bd_disk->private_data;
++		ret = l->lo_backing_file;
++	}
++	return ret;
++}
++EXPORT_SYMBOL_GPL(loop_backing_file);
++
+ /* loop sysfs attributes */
+ 
+ static ssize_t loop_attr_show(struct device *dev, char *page,
+diff -Nurp linux-5.4/fs/aufs/aufs.h linux-5.4-aufs/fs/aufs/aufs.h
+--- linux-5.4/fs/aufs/aufs.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/aufs.h	2019-11-28 01:25:59.062925618 +0200
+@@ -0,0 +1,49 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * all header files
++ */
++
++#ifndef __AUFS_H__
++#define __AUFS_H__
++
++#ifdef __KERNEL__
++
++#define AuStub(type, name, body, ...) \
++	static inline type name(__VA_ARGS__) { body; }
++
++#define AuStubVoid(name, ...) \
++	AuStub(void, name, , __VA_ARGS__)
++#define AuStubInt0(name, ...) \
++	AuStub(int, name, return 0, __VA_ARGS__)
++
++#include "debug.h"
++
++#include "branch.h"
++#include "cpup.h"
++#include "dcsub.h"
++#include "dbgaufs.h"
++#include "dentry.h"
++#include "dir.h"
++#include "dirren.h"
++#include "dynop.h"
++#include "file.h"
++#include "fstype.h"
++#include "hbl.h"
++#include "inode.h"
++#include "lcnt.h"
++#include "loop.h"
++#include "module.h"
++#include "opts.h"
++#include "rwsem.h"
++#include "super.h"
++#include "sysaufs.h"
++#include "vfsub.h"
++#include "whout.h"
++#include "wkq.h"
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_H__ */
+diff -Nurp linux-5.4/fs/aufs/branch.c linux-5.4-aufs/fs/aufs/branch.c
+--- linux-5.4/fs/aufs/branch.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/branch.c	2019-11-28 01:25:59.062925618 +0200
+@@ -0,0 +1,1415 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * branch management
++ */
++
++#include <linux/compat.h>
++#include <linux/statfs.h>
++#include "aufs.h"
++
++/*
++ * free a single branch
++ */
++static void au_br_do_free(struct au_branch *br)
++{
++	int i;
++	struct au_wbr *wbr;
++	struct au_dykey **key;
++
++	au_hnotify_fin_br(br);
++	/* always, regardless the mount option */
++	au_dr_hino_free(&br->br_dirren);
++	au_xino_put(br);
++
++	AuLCntZero(au_lcnt_read(&br->br_nfiles, /*do_rev*/0));
++	au_lcnt_fin(&br->br_nfiles, /*do_sync*/0);
++	AuLCntZero(au_lcnt_read(&br->br_count, /*do_rev*/0));
++	au_lcnt_fin(&br->br_count, /*do_sync*/0);
++
++	wbr = br->br_wbr;
++	if (wbr) {
++		for (i = 0; i < AuBrWh_Last; i++)
++			dput(wbr->wbr_wh[i]);
++		AuDebugOn(atomic_read(&wbr->wbr_wh_running));
++		AuRwDestroy(&wbr->wbr_wh_rwsem);
++	}
++
++	if (br->br_fhsm) {
++		au_br_fhsm_fin(br->br_fhsm);
++		au_kfree_try_rcu(br->br_fhsm);
++	}
++
++	key = br->br_dykey;
++	for (i = 0; i < AuBrDynOp; i++, key++)
++		if (*key)
++			au_dy_put(*key);
++		else
++			break;
++
++	/* recursive lock, s_umount of branch's */
++	/* synchronize_rcu(); */ /* why? */
++	lockdep_off();
++	path_put(&br->br_path);
++	lockdep_on();
++	au_kfree_rcu(wbr);
++	au_lcnt_wait_for_fin(&br->br_nfiles);
++	au_lcnt_wait_for_fin(&br->br_count);
++	/* I don't know why, but percpu_refcount requires this */
++	/* synchronize_rcu(); */
++	au_kfree_rcu(br);
++}
++
++/*
++ * frees all branches
++ */
++void au_br_free(struct au_sbinfo *sbinfo)
++{
++	aufs_bindex_t bmax;
++	struct au_branch **br;
++
++	AuRwMustWriteLock(&sbinfo->si_rwsem);
++
++	bmax = sbinfo->si_bbot + 1;
++	br = sbinfo->si_branch;
++	while (bmax--)
++		au_br_do_free(*br++);
++}
++
++/*
++ * find the index of a branch which is specified by @br_id.
++ */
++int au_br_index(struct super_block *sb, aufs_bindex_t br_id)
++{
++	aufs_bindex_t bindex, bbot;
++
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++)
++		if (au_sbr_id(sb, bindex) == br_id)
++			return bindex;
++	return -1;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * add a branch
++ */
++
++static int test_overlap(struct super_block *sb, struct dentry *h_adding,
++			struct dentry *h_root)
++{
++	if (unlikely(h_adding == h_root
++		     || au_test_loopback_overlap(sb, h_adding)))
++		return 1;
++	if (h_adding->d_sb != h_root->d_sb)
++		return 0;
++	return au_test_subdir(h_adding, h_root)
++		|| au_test_subdir(h_root, h_adding);
++}
++
++/*
++ * returns a newly allocated branch. @new_nbranch is a number of branches
++ * after adding a branch.
++ */
++static struct au_branch *au_br_alloc(struct super_block *sb, int new_nbranch,
++				     int perm)
++{
++	struct au_branch *add_branch;
++	struct dentry *root;
++	struct inode *inode;
++	int err;
++
++	err = -ENOMEM;
++	add_branch = kzalloc(sizeof(*add_branch), GFP_NOFS);
++	if (unlikely(!add_branch))
++		goto out;
++	add_branch->br_xino = au_xino_alloc(/*nfile*/1);
++	if (unlikely(!add_branch->br_xino))
++		goto out_br;
++	err = au_hnotify_init_br(add_branch, perm);
++	if (unlikely(err))
++		goto out_xino;
++
++	if (au_br_writable(perm)) {
++		/* may be freed separately at changing the branch permission */
++		add_branch->br_wbr = kzalloc(sizeof(*add_branch->br_wbr),
++					     GFP_NOFS);
++		if (unlikely(!add_branch->br_wbr))
++			goto out_hnotify;
++	}
++
++	if (au_br_fhsm(perm)) {
++		err = au_fhsm_br_alloc(add_branch);
++		if (unlikely(err))
++			goto out_wbr;
++	}
++
++	root = sb->s_root;
++	err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0);
++	if (!err)
++		err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0);
++	if (!err) {
++		inode = d_inode(root);
++		err = au_hinode_realloc(au_ii(inode), new_nbranch,
++					/*may_shrink*/0);
++	}
++	if (!err)
++		return add_branch; /* success */
++
++out_wbr:
++	au_kfree_rcu(add_branch->br_wbr);
++out_hnotify:
++	au_hnotify_fin_br(add_branch);
++out_xino:
++	au_xino_put(add_branch);
++out_br:
++	au_kfree_rcu(add_branch);
++out:
++	return ERR_PTR(err);
++}
++
++/*
++ * test if the branch permission is legal or not.
++ */
++static int test_br(struct inode *inode, int brperm, char *path)
++{
++	int err;
++
++	err = (au_br_writable(brperm) && IS_RDONLY(inode));
++	if (!err)
++		goto out;
++
++	err = -EINVAL;
++	pr_err("write permission for readonly mount or inode, %s\n", path);
++
++out:
++	return err;
++}
++
++/*
++ * returns:
++ * 0: success, the caller will add it
++ * plus: success, it is already unified, the caller should ignore it
++ * minus: error
++ */
++static int test_add(struct super_block *sb, struct au_opt_add *add, int remount)
++{
++	int err;
++	aufs_bindex_t bbot, bindex;
++	struct dentry *root, *h_dentry;
++	struct inode *inode, *h_inode;
++
++	root = sb->s_root;
++	bbot = au_sbbot(sb);
++	if (unlikely(bbot >= 0
++		     && au_find_dbindex(root, add->path.dentry) >= 0)) {
++		err = 1;
++		if (!remount) {
++			err = -EINVAL;
++			pr_err("%s duplicated\n", add->pathname);
++		}
++		goto out;
++	}
++
++	err = -ENOSPC; /* -E2BIG; */
++	if (unlikely(AUFS_BRANCH_MAX <= add->bindex
++		     || AUFS_BRANCH_MAX - 1 <= bbot)) {
++		pr_err("number of branches exceeded %s\n", add->pathname);
++		goto out;
++	}
++
++	err = -EDOM;
++	if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) {
++		pr_err("bad index %d\n", add->bindex);
++		goto out;
++	}
++
++	inode = d_inode(add->path.dentry);
++	err = -ENOENT;
++	if (unlikely(!inode->i_nlink)) {
++		pr_err("no existence %s\n", add->pathname);
++		goto out;
++	}
++
++	err = -EINVAL;
++	if (unlikely(inode->i_sb == sb)) {
++		pr_err("%s must be outside\n", add->pathname);
++		goto out;
++	}
++
++	if (unlikely(au_test_fs_unsuppoted(inode->i_sb))) {
++		pr_err("unsupported filesystem, %s (%s)\n",
++		       add->pathname, au_sbtype(inode->i_sb));
++		goto out;
++	}
++
++	if (unlikely(inode->i_sb->s_stack_depth)) {
++		pr_err("already stacked, %s (%s)\n",
++		       add->pathname, au_sbtype(inode->i_sb));
++		goto out;
++	}
++
++	err = test_br(d_inode(add->path.dentry), add->perm, add->pathname);
++	if (unlikely(err))
++		goto out;
++
++	if (bbot < 0)
++		return 0; /* success */
++
++	err = -EINVAL;
++	for (bindex = 0; bindex <= bbot; bindex++)
++		if (unlikely(test_overlap(sb, add->path.dentry,
++					  au_h_dptr(root, bindex)))) {
++			pr_err("%s is overlapped\n", add->pathname);
++			goto out;
++		}
++
++	err = 0;
++	if (au_opt_test(au_mntflags(sb), WARN_PERM)) {
++		h_dentry = au_h_dptr(root, 0);
++		h_inode = d_inode(h_dentry);
++		if ((h_inode->i_mode & S_IALLUGO) != (inode->i_mode & S_IALLUGO)
++		    || !uid_eq(h_inode->i_uid, inode->i_uid)
++		    || !gid_eq(h_inode->i_gid, inode->i_gid))
++			pr_warn("uid/gid/perm %s %u/%u/0%o, %u/%u/0%o\n",
++				add->pathname,
++				i_uid_read(inode), i_gid_read(inode),
++				(inode->i_mode & S_IALLUGO),
++				i_uid_read(h_inode), i_gid_read(h_inode),
++				(h_inode->i_mode & S_IALLUGO));
++	}
++
++out:
++	return err;
++}
++
++/*
++ * initialize or clean the whiteouts for an adding branch
++ */
++static int au_br_init_wh(struct super_block *sb, struct au_branch *br,
++			 int new_perm)
++{
++	int err, old_perm;
++	aufs_bindex_t bindex;
++	struct inode *h_inode;
++	struct au_wbr *wbr;
++	struct au_hinode *hdir;
++	struct dentry *h_dentry;
++
++	err = vfsub_mnt_want_write(au_br_mnt(br));
++	if (unlikely(err))
++		goto out;
++
++	wbr = br->br_wbr;
++	old_perm = br->br_perm;
++	br->br_perm = new_perm;
++	hdir = NULL;
++	h_inode = NULL;
++	bindex = au_br_index(sb, br->br_id);
++	if (0 <= bindex) {
++		hdir = au_hi(d_inode(sb->s_root), bindex);
++		au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
++	} else {
++		h_dentry = au_br_dentry(br);
++		h_inode = d_inode(h_dentry);
++		inode_lock_nested(h_inode, AuLsc_I_PARENT);
++	}
++	if (!wbr)
++		err = au_wh_init(br, sb);
++	else {
++		wbr_wh_write_lock(wbr);
++		err = au_wh_init(br, sb);
++		wbr_wh_write_unlock(wbr);
++	}
++	if (hdir)
++		au_hn_inode_unlock(hdir);
++	else
++		inode_unlock(h_inode);
++	vfsub_mnt_drop_write(au_br_mnt(br));
++	br->br_perm = old_perm;
++
++	if (!err && wbr && !au_br_writable(new_perm)) {
++		au_kfree_rcu(wbr);
++		br->br_wbr = NULL;
++	}
++
++out:
++	return err;
++}
++
++static int au_wbr_init(struct au_branch *br, struct super_block *sb,
++		       int perm)
++{
++	int err;
++	struct kstatfs kst;
++	struct au_wbr *wbr;
++
++	wbr = br->br_wbr;
++	au_rw_init(&wbr->wbr_wh_rwsem);
++	atomic_set(&wbr->wbr_wh_running, 0);
++
++	/*
++	 * a limit for rmdir/rename a dir
++	 * cf. AUFS_MAX_NAMELEN in include/uapi/linux/aufs_type.h
++	 */
++	err = vfs_statfs(&br->br_path, &kst);
++	if (unlikely(err))
++		goto out;
++	err = -EINVAL;
++	if (kst.f_namelen >= NAME_MAX)
++		err = au_br_init_wh(sb, br, perm);
++	else
++		pr_err("%pd(%s), unsupported namelen %ld\n",
++		       au_br_dentry(br),
++		       au_sbtype(au_br_dentry(br)->d_sb), kst.f_namelen);
++
++out:
++	return err;
++}
++
++/* initialize a new branch */
++static int au_br_init(struct au_branch *br, struct super_block *sb,
++		      struct au_opt_add *add)
++{
++	int err;
++	struct au_branch *brbase;
++	struct file *xf;
++	struct inode *h_inode;
++
++	err = 0;
++	br->br_perm = add->perm;
++	br->br_path = add->path; /* set first, path_get() later */
++	spin_lock_init(&br->br_dykey_lock);
++	au_lcnt_init(&br->br_nfiles, /*release*/NULL);
++	au_lcnt_init(&br->br_count, /*release*/NULL);
++	br->br_id = au_new_br_id(sb);
++	AuDebugOn(br->br_id < 0);
++
++	/* always, regardless the given option */
++	err = au_dr_br_init(sb, br, &add->path);
++	if (unlikely(err))
++		goto out_err;
++
++	if (au_br_writable(add->perm)) {
++		err = au_wbr_init(br, sb, add->perm);
++		if (unlikely(err))
++			goto out_err;
++	}
++
++	if (au_opt_test(au_mntflags(sb), XINO)) {
++		brbase = au_sbr(sb, 0);
++		xf = au_xino_file(brbase->br_xino, /*idx*/-1);
++		AuDebugOn(!xf);
++		h_inode = d_inode(add->path.dentry);
++		err = au_xino_init_br(sb, br, h_inode->i_ino, &xf->f_path);
++		if (unlikely(err)) {
++			AuDebugOn(au_xino_file(br->br_xino, /*idx*/-1));
++			goto out_err;
++		}
++	}
++
++	sysaufs_br_init(br);
++	path_get(&br->br_path);
++	goto out; /* success */
++
++out_err:
++	memset(&br->br_path, 0, sizeof(br->br_path));
++out:
++	return err;
++}
++
++static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex,
++			     struct au_branch *br, aufs_bindex_t bbot,
++			     aufs_bindex_t amount)
++{
++	struct au_branch **brp;
++
++	AuRwMustWriteLock(&sbinfo->si_rwsem);
++
++	brp = sbinfo->si_branch + bindex;
++	memmove(brp + 1, brp, sizeof(*brp) * amount);
++	*brp = br;
++	sbinfo->si_bbot++;
++	if (unlikely(bbot < 0))
++		sbinfo->si_bbot = 0;
++}
++
++static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex,
++			     aufs_bindex_t bbot, aufs_bindex_t amount)
++{
++	struct au_hdentry *hdp;
++
++	AuRwMustWriteLock(&dinfo->di_rwsem);
++
++	hdp = au_hdentry(dinfo, bindex);
++	memmove(hdp + 1, hdp, sizeof(*hdp) * amount);
++	au_h_dentry_init(hdp);
++	dinfo->di_bbot++;
++	if (unlikely(bbot < 0))
++		dinfo->di_btop = 0;
++}
++
++static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex,
++			     aufs_bindex_t bbot, aufs_bindex_t amount)
++{
++	struct au_hinode *hip;
++
++	AuRwMustWriteLock(&iinfo->ii_rwsem);
++
++	hip = au_hinode(iinfo, bindex);
++	memmove(hip + 1, hip, sizeof(*hip) * amount);
++	au_hinode_init(hip);
++	iinfo->ii_bbot++;
++	if (unlikely(bbot < 0))
++		iinfo->ii_btop = 0;
++}
++
++static void au_br_do_add(struct super_block *sb, struct au_branch *br,
++			 aufs_bindex_t bindex)
++{
++	struct dentry *root, *h_dentry;
++	struct inode *root_inode, *h_inode;
++	aufs_bindex_t bbot, amount;
++
++	root = sb->s_root;
++	root_inode = d_inode(root);
++	bbot = au_sbbot(sb);
++	amount = bbot + 1 - bindex;
++	h_dentry = au_br_dentry(br);
++	au_sbilist_lock();
++	au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount);
++	au_br_do_add_hdp(au_di(root), bindex, bbot, amount);
++	au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount);
++	au_set_h_dptr(root, bindex, dget(h_dentry));
++	h_inode = d_inode(h_dentry);
++	au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0);
++	au_sbilist_unlock();
++}
++
++int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount)
++{
++	int err;
++	aufs_bindex_t bbot, add_bindex;
++	struct dentry *root, *h_dentry;
++	struct inode *root_inode;
++	struct au_branch *add_branch;
++
++	root = sb->s_root;
++	root_inode = d_inode(root);
++	IMustLock(root_inode);
++	IiMustWriteLock(root_inode);
++	err = test_add(sb, add, remount);
++	if (unlikely(err < 0))
++		goto out;
++	if (err) {
++		err = 0;
++		goto out; /* success */
++	}
++
++	bbot = au_sbbot(sb);
++	add_branch = au_br_alloc(sb, bbot + 2, add->perm);
++	err = PTR_ERR(add_branch);
++	if (IS_ERR(add_branch))
++		goto out;
++
++	err = au_br_init(add_branch, sb, add);
++	if (unlikely(err)) {
++		au_br_do_free(add_branch);
++		goto out;
++	}
++
++	add_bindex = add->bindex;
++	sysaufs_brs_del(sb, add_bindex);	/* remove successors */
++	au_br_do_add(sb, add_branch, add_bindex);
++	sysaufs_brs_add(sb, add_bindex);	/* append successors */
++	dbgaufs_brs_add(sb, add_bindex, /*topdown*/0);	/* rename successors */
++
++	h_dentry = add->path.dentry;
++	if (!add_bindex) {
++		au_cpup_attr_all(root_inode, /*force*/1);
++		sb->s_maxbytes = h_dentry->d_sb->s_maxbytes;
++	} else
++		au_add_nlink(root_inode, d_inode(h_dentry));
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static unsigned long long au_farray_cb(struct super_block *sb, void *a,
++				       unsigned long long max __maybe_unused,
++				       void *arg)
++{
++	unsigned long long n;
++	struct file **p, *f;
++	struct hlist_bl_head *files;
++	struct hlist_bl_node *pos;
++	struct au_finfo *finfo;
++
++	n = 0;
++	p = a;
++	files = &au_sbi(sb)->si_files;
++	hlist_bl_lock(files);
++	hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
++		f = finfo->fi_file;
++		if (file_count(f)
++		    && !special_file(file_inode(f)->i_mode)) {
++			get_file(f);
++			*p++ = f;
++			n++;
++			AuDebugOn(n > max);
++		}
++	}
++	hlist_bl_unlock(files);
++
++	return n;
++}
++
++static struct file **au_farray_alloc(struct super_block *sb,
++				     unsigned long long *max)
++{
++	struct au_sbinfo *sbi;
++
++	sbi = au_sbi(sb);
++	*max = au_lcnt_read(&sbi->si_nfiles, /*do_rev*/1);
++	return au_array_alloc(max, au_farray_cb, sb, /*arg*/NULL);
++}
++
++static void au_farray_free(struct file **a, unsigned long long max)
++{
++	unsigned long long ull;
++
++	for (ull = 0; ull < max; ull++)
++		if (a[ull])
++			fput(a[ull]);
++	kvfree(a);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * delete a branch
++ */
++
++/* to show the line number, do not make it inlined function */
++#define AuVerbose(do_info, fmt, ...) do { \
++	if (do_info) \
++		pr_info(fmt, ##__VA_ARGS__); \
++} while (0)
++
++static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop,
++			 aufs_bindex_t bbot)
++{
++	return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot;
++}
++
++static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop,
++			 aufs_bindex_t bbot)
++{
++	return au_test_ibusy(d_inode(dentry), btop, bbot);
++}
++
++/*
++ * test if the branch is deletable or not.
++ */
++static int test_dentry_busy(struct dentry *root, aufs_bindex_t bindex,
++			    unsigned int sigen, const unsigned int verbose)
++{
++	int err, i, j, ndentry;
++	aufs_bindex_t btop, bbot;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry *d;
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	err = au_dcsub_pages(&dpages, root, NULL, NULL);
++	if (unlikely(err))
++		goto out_dpages;
++
++	for (i = 0; !err && i < dpages.ndpage; i++) {
++		dpage = dpages.dpages + i;
++		ndentry = dpage->ndentry;
++		for (j = 0; !err && j < ndentry; j++) {
++			d = dpage->dentries[j];
++			AuDebugOn(au_dcount(d) <= 0);
++			if (!au_digen_test(d, sigen)) {
++				di_read_lock_child(d, AuLock_IR);
++				if (unlikely(au_dbrange_test(d))) {
++					di_read_unlock(d, AuLock_IR);
++					continue;
++				}
++			} else {
++				di_write_lock_child(d);
++				if (unlikely(au_dbrange_test(d))) {
++					di_write_unlock(d);
++					continue;
++				}
++				err = au_reval_dpath(d, sigen);
++				if (!err)
++					di_downgrade_lock(d, AuLock_IR);
++				else {
++					di_write_unlock(d);
++					break;
++				}
++			}
++
++			/* AuDbgDentry(d); */
++			btop = au_dbtop(d);
++			bbot = au_dbbot(d);
++			if (btop <= bindex
++			    && bindex <= bbot
++			    && au_h_dptr(d, bindex)
++			    && au_test_dbusy(d, btop, bbot)) {
++				err = -EBUSY;
++				AuVerbose(verbose, "busy %pd\n", d);
++				AuDbgDentry(d);
++			}
++			di_read_unlock(d, AuLock_IR);
++		}
++	}
++
++out_dpages:
++	au_dpages_free(&dpages);
++out:
++	return err;
++}
++
++static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex,
++			   unsigned int sigen, const unsigned int verbose)
++{
++	int err;
++	unsigned long long max, ull;
++	struct inode *i, **array;
++	aufs_bindex_t btop, bbot;
++
++	array = au_iarray_alloc(sb, &max);
++	err = PTR_ERR(array);
++	if (IS_ERR(array))
++		goto out;
++
++	err = 0;
++	AuDbg("b%d\n", bindex);
++	for (ull = 0; !err && ull < max; ull++) {
++		i = array[ull];
++		if (unlikely(!i))
++			break;
++		if (i->i_ino == AUFS_ROOT_INO)
++			continue;
++
++		/* AuDbgInode(i); */
++		if (au_iigen(i, NULL) == sigen)
++			ii_read_lock_child(i);
++		else {
++			ii_write_lock_child(i);
++			err = au_refresh_hinode_self(i);
++			au_iigen_dec(i);
++			if (!err)
++				ii_downgrade_lock(i);
++			else {
++				ii_write_unlock(i);
++				break;
++			}
++		}
++
++		btop = au_ibtop(i);
++		bbot = au_ibbot(i);
++		if (btop <= bindex
++		    && bindex <= bbot
++		    && au_h_iptr(i, bindex)
++		    && au_test_ibusy(i, btop, bbot)) {
++			err = -EBUSY;
++			AuVerbose(verbose, "busy i%lu\n", i->i_ino);
++			AuDbgInode(i);
++		}
++		ii_read_unlock(i);
++	}
++	au_iarray_free(array, max);
++
++out:
++	return err;
++}
++
++static int test_children_busy(struct dentry *root, aufs_bindex_t bindex,
++			      const unsigned int verbose)
++{
++	int err;
++	unsigned int sigen;
++
++	sigen = au_sigen(root->d_sb);
++	DiMustNoWaiters(root);
++	IiMustNoWaiters(d_inode(root));
++	di_write_unlock(root);
++	err = test_dentry_busy(root, bindex, sigen, verbose);
++	if (!err)
++		err = test_inode_busy(root->d_sb, bindex, sigen, verbose);
++	di_write_lock_child(root); /* aufs_write_lock() calls ..._child() */
++
++	return err;
++}
++
++static int test_dir_busy(struct file *file, aufs_bindex_t br_id,
++			 struct file **to_free, int *idx)
++{
++	int err;
++	unsigned char matched, root;
++	aufs_bindex_t bindex, bbot;
++	struct au_fidir *fidir;
++	struct au_hfile *hfile;
++
++	err = 0;
++	root = IS_ROOT(file->f_path.dentry);
++	if (root) {
++		get_file(file);
++		to_free[*idx] = file;
++		(*idx)++;
++		goto out;
++	}
++
++	matched = 0;
++	fidir = au_fi(file)->fi_hdir;
++	AuDebugOn(!fidir);
++	bbot = au_fbbot_dir(file);
++	for (bindex = au_fbtop(file); bindex <= bbot; bindex++) {
++		hfile = fidir->fd_hfile + bindex;
++		if (!hfile->hf_file)
++			continue;
++
++		if (hfile->hf_br->br_id == br_id) {
++			matched = 1;
++			break;
++		}
++	}
++	if (matched)
++		err = -EBUSY;
++
++out:
++	return err;
++}
++
++static int test_file_busy(struct super_block *sb, aufs_bindex_t br_id,
++			  struct file **to_free, int opened)
++{
++	int err, idx;
++	unsigned long long ull, max;
++	aufs_bindex_t btop;
++	struct file *file, **array;
++	struct dentry *root;
++	struct au_hfile *hfile;
++
++	array = au_farray_alloc(sb, &max);
++	err = PTR_ERR(array);
++	if (IS_ERR(array))
++		goto out;
++
++	err = 0;
++	idx = 0;
++	root = sb->s_root;
++	di_write_unlock(root);
++	for (ull = 0; ull < max; ull++) {
++		file = array[ull];
++		if (unlikely(!file))
++			break;
++
++		/* AuDbg("%pD\n", file); */
++		fi_read_lock(file);
++		btop = au_fbtop(file);
++		if (!d_is_dir(file->f_path.dentry)) {
++			hfile = &au_fi(file)->fi_htop;
++			if (hfile->hf_br->br_id == br_id)
++				err = -EBUSY;
++		} else
++			err = test_dir_busy(file, br_id, to_free, &idx);
++		fi_read_unlock(file);
++		if (unlikely(err))
++			break;
++	}
++	di_write_lock_child(root);
++	au_farray_free(array, max);
++	AuDebugOn(idx > opened);
++
++out:
++	return err;
++}
++
++static void br_del_file(struct file **to_free, unsigned long long opened,
++			aufs_bindex_t br_id)
++{
++	unsigned long long ull;
++	aufs_bindex_t bindex, btop, bbot, bfound;
++	struct file *file;
++	struct au_fidir *fidir;
++	struct au_hfile *hfile;
++
++	for (ull = 0; ull < opened; ull++) {
++		file = to_free[ull];
++		if (unlikely(!file))
++			break;
++
++		/* AuDbg("%pD\n", file); */
++		AuDebugOn(!d_is_dir(file->f_path.dentry));
++		bfound = -1;
++		fidir = au_fi(file)->fi_hdir;
++		AuDebugOn(!fidir);
++		fi_write_lock(file);
++		btop = au_fbtop(file);
++		bbot = au_fbbot_dir(file);
++		for (bindex = btop; bindex <= bbot; bindex++) {
++			hfile = fidir->fd_hfile + bindex;
++			if (!hfile->hf_file)
++				continue;
++
++			if (hfile->hf_br->br_id == br_id) {
++				bfound = bindex;
++				break;
++			}
++		}
++		AuDebugOn(bfound < 0);
++		au_set_h_fptr(file, bfound, NULL);
++		if (bfound == btop) {
++			for (btop++; btop <= bbot; btop++)
++				if (au_hf_dir(file, btop)) {
++					au_set_fbtop(file, btop);
++					break;
++				}
++		}
++		fi_write_unlock(file);
++	}
++}
++
++static void au_br_do_del_brp(struct au_sbinfo *sbinfo,
++			     const aufs_bindex_t bindex,
++			     const aufs_bindex_t bbot)
++{
++	struct au_branch **brp, **p;
++
++	AuRwMustWriteLock(&sbinfo->si_rwsem);
++
++	brp = sbinfo->si_branch + bindex;
++	if (bindex < bbot)
++		memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex));
++	sbinfo->si_branch[0 + bbot] = NULL;
++	sbinfo->si_bbot--;
++
++	p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST,
++			/*may_shrink*/1);
++	if (p)
++		sbinfo->si_branch = p;
++	/* harmless error */
++}
++
++static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex,
++			     const aufs_bindex_t bbot)
++{
++	struct au_hdentry *hdp, *p;
++
++	AuRwMustWriteLock(&dinfo->di_rwsem);
++
++	hdp = au_hdentry(dinfo, bindex);
++	if (bindex < bbot)
++		memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex));
++	/* au_h_dentry_init(au_hdentry(dinfo, bbot); */
++	dinfo->di_bbot--;
++
++	p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST,
++			/*may_shrink*/1);
++	if (p)
++		dinfo->di_hdentry = p;
++	/* harmless error */
++}
++
++static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex,
++			     const aufs_bindex_t bbot)
++{
++	struct au_hinode *hip, *p;
++
++	AuRwMustWriteLock(&iinfo->ii_rwsem);
++
++	hip = au_hinode(iinfo, bindex);
++	if (bindex < bbot)
++		memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex));
++	/* au_hinode_init(au_hinode(iinfo, bbot)); */
++	iinfo->ii_bbot--;
++
++	p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST,
++			/*may_shrink*/1);
++	if (p)
++		iinfo->ii_hinode = p;
++	/* harmless error */
++}
++
++static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex,
++			 struct au_branch *br)
++{
++	aufs_bindex_t bbot;
++	struct au_sbinfo *sbinfo;
++	struct dentry *root, *h_root;
++	struct inode *inode, *h_inode;
++	struct au_hinode *hinode;
++
++	SiMustWriteLock(sb);
++
++	root = sb->s_root;
++	inode = d_inode(root);
++	sbinfo = au_sbi(sb);
++	bbot = sbinfo->si_bbot;
++
++	h_root = au_h_dptr(root, bindex);
++	hinode = au_hi(inode, bindex);
++	h_inode = au_igrab(hinode->hi_inode);
++	au_hiput(hinode);
++
++	au_sbilist_lock();
++	au_br_do_del_brp(sbinfo, bindex, bbot);
++	au_br_do_del_hdp(au_di(root), bindex, bbot);
++	au_br_do_del_hip(au_ii(inode), bindex, bbot);
++	au_sbilist_unlock();
++
++	/* ignore an error */
++	au_dr_br_fin(sb, br); /* always, regardless the mount option */
++
++	dput(h_root);
++	iput(h_inode);
++	au_br_do_free(br);
++}
++
++static unsigned long long empty_cb(struct super_block *sb, void *array,
++				   unsigned long long max, void *arg)
++{
++	return max;
++}
++
++int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount)
++{
++	int err, rerr, i;
++	unsigned long long opened;
++	unsigned int mnt_flags;
++	aufs_bindex_t bindex, bbot, br_id;
++	unsigned char do_wh, verbose;
++	struct au_branch *br;
++	struct au_wbr *wbr;
++	struct dentry *root;
++	struct file **to_free;
++
++	err = 0;
++	opened = 0;
++	to_free = NULL;
++	root = sb->s_root;
++	bindex = au_find_dbindex(root, del->h_path.dentry);
++	if (bindex < 0) {
++		if (remount)
++			goto out; /* success */
++		err = -ENOENT;
++		pr_err("%s no such branch\n", del->pathname);
++		goto out;
++	}
++	AuDbg("bindex b%d\n", bindex);
++
++	err = -EBUSY;
++	mnt_flags = au_mntflags(sb);
++	verbose = !!au_opt_test(mnt_flags, VERBOSE);
++	bbot = au_sbbot(sb);
++	if (unlikely(!bbot)) {
++		AuVerbose(verbose, "no more branches left\n");
++		goto out;
++	}
++
++	br = au_sbr(sb, bindex);
++	AuDebugOn(!path_equal(&br->br_path, &del->h_path));
++	if (unlikely(au_lcnt_read(&br->br_count, /*do_rev*/1))) {
++		AuVerbose(verbose, "br %pd2 is busy now\n", del->h_path.dentry);
++		goto out;
++	}
++
++	br_id = br->br_id;
++	opened = au_lcnt_read(&br->br_nfiles, /*do_rev*/1);
++	if (unlikely(opened)) {
++		to_free = au_array_alloc(&opened, empty_cb, sb, NULL);
++		err = PTR_ERR(to_free);
++		if (IS_ERR(to_free))
++			goto out;
++
++		err = test_file_busy(sb, br_id, to_free, opened);
++		if (unlikely(err)) {
++			AuVerbose(verbose, "%llu file(s) opened\n", opened);
++			goto out;
++		}
++	}
++
++	wbr = br->br_wbr;
++	do_wh = wbr && (wbr->wbr_whbase || wbr->wbr_plink || wbr->wbr_orph);
++	if (do_wh) {
++		/* instead of WbrWhMustWriteLock(wbr) */
++		SiMustWriteLock(sb);
++		for (i = 0; i < AuBrWh_Last; i++) {
++			dput(wbr->wbr_wh[i]);
++			wbr->wbr_wh[i] = NULL;
++		}
++	}
++
++	err = test_children_busy(root, bindex, verbose);
++	if (unlikely(err)) {
++		if (do_wh)
++			goto out_wh;
++		goto out;
++	}
++
++	err = 0;
++	if (to_free) {
++		/*
++		 * now we confirmed the branch is deletable.
++		 * let's free the remaining opened dirs on the branch.
++		 */
++		di_write_unlock(root);
++		br_del_file(to_free, opened, br_id);
++		di_write_lock_child(root);
++	}
++
++	sysaufs_brs_del(sb, bindex);	/* remove successors */
++	dbgaufs_xino_del(br);		/* remove one */
++	au_br_do_del(sb, bindex, br);
++	sysaufs_brs_add(sb, bindex);	/* append successors */
++	dbgaufs_brs_add(sb, bindex, /*topdown*/1);	/* rename successors */
++
++	if (!bindex) {
++		au_cpup_attr_all(d_inode(root), /*force*/1);
++		sb->s_maxbytes = au_sbr_sb(sb, 0)->s_maxbytes;
++	} else
++		au_sub_nlink(d_inode(root), d_inode(del->h_path.dentry));
++	if (au_opt_test(mnt_flags, PLINK))
++		au_plink_half_refresh(sb, br_id);
++
++	goto out; /* success */
++
++out_wh:
++	/* revert */
++	rerr = au_br_init_wh(sb, br, br->br_perm);
++	if (rerr)
++		pr_warn("failed re-creating base whiteout, %s. (%d)\n",
++			del->pathname, rerr);
++out:
++	if (to_free)
++		au_farray_free(to_free, opened);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg)
++{
++	int err;
++	aufs_bindex_t btop, bbot;
++	struct aufs_ibusy ibusy;
++	struct inode *inode, *h_inode;
++
++	err = -EPERM;
++	if (unlikely(!capable(CAP_SYS_ADMIN)))
++		goto out;
++
++	err = copy_from_user(&ibusy, arg, sizeof(ibusy));
++	if (!err)
++		/* VERIFY_WRITE */
++		err = !access_ok(&arg->h_ino, sizeof(arg->h_ino));
++	if (unlikely(err)) {
++		err = -EFAULT;
++		AuTraceErr(err);
++		goto out;
++	}
++
++	err = -EINVAL;
++	si_read_lock(sb, AuLock_FLUSH);
++	if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb)))
++		goto out_unlock;
++
++	err = 0;
++	ibusy.h_ino = 0; /* invalid */
++	inode = ilookup(sb, ibusy.ino);
++	if (!inode
++	    || inode->i_ino == AUFS_ROOT_INO
++	    || au_is_bad_inode(inode))
++		goto out_unlock;
++
++	ii_read_lock_child(inode);
++	btop = au_ibtop(inode);
++	bbot = au_ibbot(inode);
++	if (btop <= ibusy.bindex && ibusy.bindex <= bbot) {
++		h_inode = au_h_iptr(inode, ibusy.bindex);
++		if (h_inode && au_test_ibusy(inode, btop, bbot))
++			ibusy.h_ino = h_inode->i_ino;
++	}
++	ii_read_unlock(inode);
++	iput(inode);
++
++out_unlock:
++	si_read_unlock(sb);
++	if (!err) {
++		err = __put_user(ibusy.h_ino, &arg->h_ino);
++		if (unlikely(err)) {
++			err = -EFAULT;
++			AuTraceErr(err);
++		}
++	}
++out:
++	return err;
++}
++
++long au_ibusy_ioctl(struct file *file, unsigned long arg)
++{
++	return au_ibusy(file->f_path.dentry->d_sb, (void __user *)arg);
++}
++
++#ifdef CONFIG_COMPAT
++long au_ibusy_compat_ioctl(struct file *file, unsigned long arg)
++{
++	return au_ibusy(file->f_path.dentry->d_sb, compat_ptr(arg));
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * change a branch permission
++ */
++
++static void au_warn_ima(void)
++{
++#ifdef CONFIG_IMA
++	/* since it doesn't support mark_files_ro() */
++	AuWarn1("RW -> RO makes IMA to produce wrong message\n");
++#endif
++}
++
++static int do_need_sigen_inc(int a, int b)
++{
++	return au_br_whable(a) && !au_br_whable(b);
++}
++
++static int need_sigen_inc(int old, int new)
++{
++	return do_need_sigen_inc(old, new)
++		|| do_need_sigen_inc(new, old);
++}
++
++static int au_br_mod_files_ro(struct super_block *sb, aufs_bindex_t bindex)
++{
++	int err, do_warn;
++	unsigned int mnt_flags;
++	unsigned long long ull, max;
++	aufs_bindex_t br_id;
++	unsigned char verbose, writer;
++	struct file *file, *hf, **array;
++	struct au_hfile *hfile;
++	struct inode *h_inode;
++
++	mnt_flags = au_mntflags(sb);
++	verbose = !!au_opt_test(mnt_flags, VERBOSE);
++
++	array = au_farray_alloc(sb, &max);
++	err = PTR_ERR(array);
++	if (IS_ERR(array))
++		goto out;
++
++	do_warn = 0;
++	br_id = au_sbr_id(sb, bindex);
++	for (ull = 0; ull < max; ull++) {
++		file = array[ull];
++		if (unlikely(!file))
++			break;
++
++		/* AuDbg("%pD\n", file); */
++		fi_read_lock(file);
++		if (unlikely(au_test_mmapped(file))) {
++			err = -EBUSY;
++			AuVerbose(verbose, "mmapped %pD\n", file);
++			AuDbgFile(file);
++			FiMustNoWaiters(file);
++			fi_read_unlock(file);
++			goto out_array;
++		}
++
++		hfile = &au_fi(file)->fi_htop;
++		hf = hfile->hf_file;
++		if (!d_is_reg(file->f_path.dentry)
++		    || !(file->f_mode & FMODE_WRITE)
++		    || hfile->hf_br->br_id != br_id
++		    || !(hf->f_mode & FMODE_WRITE))
++			array[ull] = NULL;
++		else {
++			do_warn = 1;
++			get_file(file);
++		}
++
++		FiMustNoWaiters(file);
++		fi_read_unlock(file);
++		fput(file);
++	}
++
++	err = 0;
++	if (do_warn)
++		au_warn_ima();
++
++	for (ull = 0; ull < max; ull++) {
++		file = array[ull];
++		if (!file)
++			continue;
++
++		/* todo: already flushed? */
++		/*
++		 * fs/super.c:mark_files_ro() is gone, but aufs keeps its
++		 * approach which resets f_mode and calls mnt_drop_write() and
++		 * file_release_write() for each file, because the branch
++		 * attribute in aufs world is totally different from the native
++		 * fs rw/ro mode.
++		*/
++		/* fi_read_lock(file); */
++		hfile = &au_fi(file)->fi_htop;
++		hf = hfile->hf_file;
++		/* fi_read_unlock(file); */
++		spin_lock(&hf->f_lock);
++		writer = !!(hf->f_mode & FMODE_WRITER);
++		hf->f_mode &= ~(FMODE_WRITE | FMODE_WRITER);
++		spin_unlock(&hf->f_lock);
++		if (writer) {
++			h_inode = file_inode(hf);
++			put_write_access(h_inode);
++			__mnt_drop_write(hf->f_path.mnt);
++			if ((hf->f_mode & (FMODE_READ | FMODE_WRITE))
++			    == FMODE_READ)
++				i_readcount_inc(h_inode);
++		}
++	}
++
++out_array:
++	au_farray_free(array, max);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
++	      int *do_refresh)
++{
++	int err, rerr;
++	aufs_bindex_t bindex;
++	struct dentry *root;
++	struct au_branch *br;
++	struct au_br_fhsm *bf;
++
++	root = sb->s_root;
++	bindex = au_find_dbindex(root, mod->h_root);
++	if (bindex < 0) {
++		if (remount)
++			return 0; /* success */
++		err = -ENOENT;
++		pr_err("%s no such branch\n", mod->path);
++		goto out;
++	}
++	AuDbg("bindex b%d\n", bindex);
++
++	err = test_br(d_inode(mod->h_root), mod->perm, mod->path);
++	if (unlikely(err))
++		goto out;
++
++	br = au_sbr(sb, bindex);
++	AuDebugOn(mod->h_root != au_br_dentry(br));
++	if (br->br_perm == mod->perm)
++		return 0; /* success */
++
++	/* pre-allocate for non-fhsm --> fhsm */
++	bf = NULL;
++	if (!au_br_fhsm(br->br_perm) && au_br_fhsm(mod->perm)) {
++		err = au_fhsm_br_alloc(br);
++		if (unlikely(err))
++			goto out;
++		bf = br->br_fhsm;
++		br->br_fhsm = NULL;
++	}
++
++	if (au_br_writable(br->br_perm)) {
++		/* remove whiteout base */
++		err = au_br_init_wh(sb, br, mod->perm);
++		if (unlikely(err))
++			goto out_bf;
++
++		if (!au_br_writable(mod->perm)) {
++			/* rw --> ro, file might be mmapped */
++			DiMustNoWaiters(root);
++			IiMustNoWaiters(d_inode(root));
++			di_write_unlock(root);
++			err = au_br_mod_files_ro(sb, bindex);
++			/* aufs_write_lock() calls ..._child() */
++			di_write_lock_child(root);
++
++			if (unlikely(err)) {
++				rerr = -ENOMEM;
++				br->br_wbr = kzalloc(sizeof(*br->br_wbr),
++						     GFP_NOFS);
++				if (br->br_wbr)
++					rerr = au_wbr_init(br, sb, br->br_perm);
++				if (unlikely(rerr)) {
++					AuIOErr("nested error %d (%d)\n",
++						rerr, err);
++					br->br_perm = mod->perm;
++				}
++			}
++		}
++	} else if (au_br_writable(mod->perm)) {
++		/* ro --> rw */
++		err = -ENOMEM;
++		br->br_wbr = kzalloc(sizeof(*br->br_wbr), GFP_NOFS);
++		if (br->br_wbr) {
++			err = au_wbr_init(br, sb, mod->perm);
++			if (unlikely(err)) {
++				au_kfree_rcu(br->br_wbr);
++				br->br_wbr = NULL;
++			}
++		}
++	}
++	if (unlikely(err))
++		goto out_bf;
++
++	if (au_br_fhsm(br->br_perm)) {
++		if (!au_br_fhsm(mod->perm)) {
++			/* fhsm --> non-fhsm */
++			au_br_fhsm_fin(br->br_fhsm);
++			au_kfree_rcu(br->br_fhsm);
++			br->br_fhsm = NULL;
++		}
++	} else if (au_br_fhsm(mod->perm))
++		/* non-fhsm --> fhsm */
++		br->br_fhsm = bf;
++
++	*do_refresh |= need_sigen_inc(br->br_perm, mod->perm);
++	br->br_perm = mod->perm;
++	goto out; /* success */
++
++out_bf:
++	au_kfree_try_rcu(bf);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs)
++{
++	int err;
++	struct kstatfs kstfs;
++
++	err = vfs_statfs(&br->br_path, &kstfs);
++	if (!err) {
++		stfs->f_blocks = kstfs.f_blocks;
++		stfs->f_bavail = kstfs.f_bavail;
++		stfs->f_files = kstfs.f_files;
++		stfs->f_ffree = kstfs.f_ffree;
++	}
++
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/branch.h linux-5.4-aufs/fs/aufs/branch.h
+--- linux-5.4/fs/aufs/branch.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/branch.h	2019-11-28 01:25:59.062925618 +0200
+@@ -0,0 +1,353 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * branch filesystems and xino for them
++ */
++
++#ifndef __AUFS_BRANCH_H__
++#define __AUFS_BRANCH_H__
++
++#ifdef __KERNEL__
++
++#include <linux/mount.h>
++#include "dirren.h"
++#include "dynop.h"
++#include "lcnt.h"
++#include "rwsem.h"
++#include "super.h"
++
++/* ---------------------------------------------------------------------- */
++
++/* a xino file */
++struct au_xino {
++	struct file		**xi_file;
++	unsigned int		xi_nfile;
++
++	struct {
++		spinlock_t		spin;
++		ino_t			*array;
++		int			total;
++		/* reserved for future use */
++		/* unsigned long	*bitmap; */
++		wait_queue_head_t	wqh;
++	} xi_nondir;
++
++	struct mutex		xi_mtx;	/* protects xi_file array */
++	struct hlist_bl_head	xi_writing;
++
++	atomic_t		xi_truncating;
++
++	struct kref		xi_kref;
++};
++
++/* File-based Hierarchical Storage Management */
++struct au_br_fhsm {
++#ifdef CONFIG_AUFS_FHSM
++	struct mutex		bf_lock;
++	unsigned long		bf_jiffy;
++	struct aufs_stfs	bf_stfs;
++	int			bf_readable;
++#endif
++};
++
++/* members for writable branch only */
++enum {AuBrWh_BASE, AuBrWh_PLINK, AuBrWh_ORPH, AuBrWh_Last};
++struct au_wbr {
++	struct au_rwsem		wbr_wh_rwsem;
++	struct dentry		*wbr_wh[AuBrWh_Last];
++	atomic_t		wbr_wh_running;
++#define wbr_whbase		wbr_wh[AuBrWh_BASE]	/* whiteout base */
++#define wbr_plink		wbr_wh[AuBrWh_PLINK]	/* pseudo-link dir */
++#define wbr_orph		wbr_wh[AuBrWh_ORPH]	/* dir for orphans */
++
++	/* mfs mode */
++	unsigned long long	wbr_bytes;
++};
++
++/* ext2 has 3 types of operations at least, ext3 has 4 */
++#define AuBrDynOp (AuDyLast * 4)
++
++#ifdef CONFIG_AUFS_HFSNOTIFY
++/* support for asynchronous destruction */
++struct au_br_hfsnotify {
++	struct fsnotify_group	*hfsn_group;
++};
++#endif
++
++/* sysfs entries */
++struct au_brsysfs {
++	char			name[16];
++	struct attribute	attr;
++};
++
++enum {
++	AuBrSysfs_BR,
++	AuBrSysfs_BRID,
++	AuBrSysfs_Last
++};
++
++/* protected by superblock rwsem */
++struct au_branch {
++	struct au_xino		*br_xino;
++
++	aufs_bindex_t		br_id;
++
++	int			br_perm;
++	struct path		br_path;
++	spinlock_t		br_dykey_lock;
++	struct au_dykey		*br_dykey[AuBrDynOp];
++	au_lcnt_t		br_nfiles;	/* opened files */
++	au_lcnt_t		br_count;	/* in-use for other */
++
++	struct au_wbr		*br_wbr;
++	struct au_br_fhsm	*br_fhsm;
++
++#ifdef CONFIG_AUFS_HFSNOTIFY
++	struct au_br_hfsnotify	*br_hfsn;
++#endif
++
++#ifdef CONFIG_SYSFS
++	/* entries under sysfs per mount-point */
++	struct au_brsysfs	br_sysfs[AuBrSysfs_Last];
++#endif
++
++#ifdef CONFIG_DEBUG_FS
++	struct dentry		 *br_dbgaufs; /* xino */
++#endif
++
++	struct au_dr_br		br_dirren;
++};
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct vfsmount *au_br_mnt(struct au_branch *br)
++{
++	return br->br_path.mnt;
++}
++
++static inline struct dentry *au_br_dentry(struct au_branch *br)
++{
++	return br->br_path.dentry;
++}
++
++static inline struct super_block *au_br_sb(struct au_branch *br)
++{
++	return au_br_mnt(br)->mnt_sb;
++}
++
++static inline int au_br_rdonly(struct au_branch *br)
++{
++	return (sb_rdonly(au_br_sb(br))
++		|| !au_br_writable(br->br_perm))
++		? -EROFS : 0;
++}
++
++static inline int au_br_hnotifyable(int brperm __maybe_unused)
++{
++#ifdef CONFIG_AUFS_HNOTIFY
++	return !(brperm & AuBrPerm_RR);
++#else
++	return 0;
++#endif
++}
++
++static inline int au_br_test_oflag(int oflag, struct au_branch *br)
++{
++	int err, exec_flag;
++
++	err = 0;
++	exec_flag = oflag & __FMODE_EXEC;
++	if (unlikely(exec_flag && path_noexec(&br->br_path)))
++		err = -EACCES;
++
++	return err;
++}
++
++static inline void au_xino_get(struct au_branch *br)
++{
++	struct au_xino *xi;
++
++	xi = br->br_xino;
++	if (xi)
++		kref_get(&xi->xi_kref);
++}
++
++static inline int au_xino_count(struct au_branch *br)
++{
++	int v;
++	struct au_xino *xi;
++
++	v = 0;
++	xi = br->br_xino;
++	if (xi)
++		v = kref_read(&xi->xi_kref);
++
++	return v;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* branch.c */
++struct au_sbinfo;
++void au_br_free(struct au_sbinfo *sinfo);
++int au_br_index(struct super_block *sb, aufs_bindex_t br_id);
++struct au_opt_add;
++int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount);
++struct au_opt_del;
++int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount);
++long au_ibusy_ioctl(struct file *file, unsigned long arg);
++#ifdef CONFIG_COMPAT
++long au_ibusy_compat_ioctl(struct file *file, unsigned long arg);
++#endif
++struct au_opt_mod;
++int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
++	      int *do_refresh);
++struct aufs_stfs;
++int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs);
++
++/* xino.c */
++static const loff_t au_loff_max = LLONG_MAX;
++
++aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry);
++struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
++			    int wbrtop);
++struct file *au_xino_create2(struct super_block *sb, struct path *base,
++			     struct file *copy_src);
++struct au_xi_new {
++	struct au_xino *xi;	/* switch between xino and xigen */
++	int idx;
++	struct path *base;
++	struct file *copy_src;
++};
++struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew);
++
++int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		 ino_t *ino);
++int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		  ino_t ino);
++ssize_t xino_fread(vfs_readf_t func, struct file *file, void *buf, size_t size,
++		   loff_t *pos);
++ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf,
++		    size_t size, loff_t *pos);
++
++int au_xib_trunc(struct super_block *sb);
++int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin);
++
++struct au_xino *au_xino_alloc(unsigned int nfile);
++int au_xino_put(struct au_branch *br);
++struct file *au_xino_file1(struct au_xino *xi);
++
++struct au_opt_xino;
++void au_xino_clr(struct super_block *sb);
++int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount);
++struct file *au_xino_def(struct super_block *sb);
++int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t hino,
++		    struct path *base);
++
++ino_t au_xino_new_ino(struct super_block *sb);
++void au_xino_delete_inode(struct inode *inode, const int unlinked);
++
++void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
++		       ino_t h_ino, int idx);
++int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		      int *idx);
++
++int au_xino_path(struct seq_file *seq, struct file *file);
++
++/* ---------------------------------------------------------------------- */
++
++/* @idx is signed to accept -1 meaning the first file */
++static inline struct file *au_xino_file(struct au_xino *xi, int idx)
++{
++	struct file *file;
++
++	file = NULL;
++	if (!xi)
++		goto out;
++
++	if (idx >= 0) {
++		if (idx < xi->xi_nfile)
++			file = xi->xi_file[idx];
++	} else
++		file = au_xino_file1(xi);
++
++out:
++	return file;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* Superblock to branch */
++static inline
++aufs_bindex_t au_sbr_id(struct super_block *sb, aufs_bindex_t bindex)
++{
++	return au_sbr(sb, bindex)->br_id;
++}
++
++static inline
++struct vfsmount *au_sbr_mnt(struct super_block *sb, aufs_bindex_t bindex)
++{
++	return au_br_mnt(au_sbr(sb, bindex));
++}
++
++static inline
++struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex)
++{
++	return au_br_sb(au_sbr(sb, bindex));
++}
++
++static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex)
++{
++	return au_sbr(sb, bindex)->br_perm;
++}
++
++static inline int au_sbr_whable(struct super_block *sb, aufs_bindex_t bindex)
++{
++	return au_br_whable(au_sbr_perm(sb, bindex));
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define wbr_wh_read_lock(wbr)	au_rw_read_lock(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_write_lock(wbr)	au_rw_write_lock(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_read_trylock(wbr)	au_rw_read_trylock(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_write_trylock(wbr) au_rw_write_trylock(&(wbr)->wbr_wh_rwsem)
++/*
++#define wbr_wh_read_trylock_nested(wbr) \
++	au_rw_read_trylock_nested(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_write_trylock_nested(wbr) \
++	au_rw_write_trylock_nested(&(wbr)->wbr_wh_rwsem)
++*/
++
++#define wbr_wh_read_unlock(wbr)	au_rw_read_unlock(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_write_unlock(wbr)	au_rw_write_unlock(&(wbr)->wbr_wh_rwsem)
++#define wbr_wh_downgrade_lock(wbr)	au_rw_dgrade_lock(&(wbr)->wbr_wh_rwsem)
++
++#define WbrWhMustNoWaiters(wbr)	AuRwMustNoWaiters(&(wbr)->wbr_wh_rwsem)
++#define WbrWhMustAnyLock(wbr)	AuRwMustAnyLock(&(wbr)->wbr_wh_rwsem)
++#define WbrWhMustWriteLock(wbr)	AuRwMustWriteLock(&(wbr)->wbr_wh_rwsem)
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_FHSM
++static inline void au_br_fhsm_init(struct au_br_fhsm *brfhsm)
++{
++	mutex_init(&brfhsm->bf_lock);
++	brfhsm->bf_jiffy = 0;
++	brfhsm->bf_readable = 0;
++}
++
++static inline void au_br_fhsm_fin(struct au_br_fhsm *brfhsm)
++{
++	mutex_destroy(&brfhsm->bf_lock);
++}
++#else
++AuStubVoid(au_br_fhsm_init, struct au_br_fhsm *brfhsm)
++AuStubVoid(au_br_fhsm_fin, struct au_br_fhsm *brfhsm)
++#endif
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_BRANCH_H__ */
+diff -Nurp linux-5.4/fs/aufs/cpup.c linux-5.4-aufs/fs/aufs/cpup.c
+--- linux-5.4/fs/aufs/cpup.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/cpup.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,1445 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * copy-up functions, see wbr_policy.c for copy-down
++ */
++
++#include <linux/fs_stack.h>
++#include <linux/mm.h>
++#include <linux/task_work.h>
++#include "aufs.h"
++
++void au_cpup_attr_flags(struct inode *dst, unsigned int iflags)
++{
++	const unsigned int mask = S_DEAD | S_SWAPFILE | S_PRIVATE
++		| S_NOATIME | S_NOCMTIME | S_AUTOMOUNT;
++
++	BUILD_BUG_ON(sizeof(iflags) != sizeof(dst->i_flags));
++
++	dst->i_flags |= iflags & ~mask;
++	if (au_test_fs_notime(dst->i_sb))
++		dst->i_flags |= S_NOATIME | S_NOCMTIME;
++}
++
++void au_cpup_attr_timesizes(struct inode *inode)
++{
++	struct inode *h_inode;
++
++	h_inode = au_h_iptr(inode, au_ibtop(inode));
++	fsstack_copy_attr_times(inode, h_inode);
++	fsstack_copy_inode_size(inode, h_inode);
++}
++
++void au_cpup_attr_nlink(struct inode *inode, int force)
++{
++	struct inode *h_inode;
++	struct super_block *sb;
++	aufs_bindex_t bindex, bbot;
++
++	sb = inode->i_sb;
++	bindex = au_ibtop(inode);
++	h_inode = au_h_iptr(inode, bindex);
++	if (!force
++	    && !S_ISDIR(h_inode->i_mode)
++	    && au_opt_test(au_mntflags(sb), PLINK)
++	    && au_plink_test(inode))
++		return;
++
++	/*
++	 * 0 can happen in revalidating.
++	 * h_inode->i_mutex may not be held here, but it is harmless since once
++	 * i_nlink reaches 0, it will never become positive except O_TMPFILE
++	 * case.
++	 * todo: O_TMPFILE+linkat(AT_SYMLINK_FOLLOW) bypassing aufs may cause
++	 *	 the incorrect link count.
++	 */
++	set_nlink(inode, h_inode->i_nlink);
++
++	/*
++	 * fewer nlink makes find(1) noisy, but larger nlink doesn't.
++	 * it may includes whplink directory.
++	 */
++	if (S_ISDIR(h_inode->i_mode)) {
++		bbot = au_ibbot(inode);
++		for (bindex++; bindex <= bbot; bindex++) {
++			h_inode = au_h_iptr(inode, bindex);
++			if (h_inode)
++				au_add_nlink(inode, h_inode);
++		}
++	}
++}
++
++void au_cpup_attr_changeable(struct inode *inode)
++{
++	struct inode *h_inode;
++
++	h_inode = au_h_iptr(inode, au_ibtop(inode));
++	inode->i_mode = h_inode->i_mode;
++	inode->i_uid = h_inode->i_uid;
++	inode->i_gid = h_inode->i_gid;
++	au_cpup_attr_timesizes(inode);
++	au_cpup_attr_flags(inode, h_inode->i_flags);
++}
++
++void au_cpup_igen(struct inode *inode, struct inode *h_inode)
++{
++	struct au_iinfo *iinfo = au_ii(inode);
++
++	IiMustWriteLock(inode);
++
++	iinfo->ii_higen = h_inode->i_generation;
++	iinfo->ii_hsb1 = h_inode->i_sb;
++}
++
++void au_cpup_attr_all(struct inode *inode, int force)
++{
++	struct inode *h_inode;
++
++	h_inode = au_h_iptr(inode, au_ibtop(inode));
++	au_cpup_attr_changeable(inode);
++	if (inode->i_nlink > 0)
++		au_cpup_attr_nlink(inode, force);
++	inode->i_rdev = h_inode->i_rdev;
++	inode->i_blkbits = h_inode->i_blkbits;
++	au_cpup_igen(inode, h_inode);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* Note: dt_dentry and dt_h_dentry are not dget/dput-ed */
++
++/* keep the timestamps of the parent dir when cpup */
++void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
++		    struct path *h_path)
++{
++	struct inode *h_inode;
++
++	dt->dt_dentry = dentry;
++	dt->dt_h_path = *h_path;
++	h_inode = d_inode(h_path->dentry);
++	dt->dt_atime = h_inode->i_atime;
++	dt->dt_mtime = h_inode->i_mtime;
++	/* smp_mb(); */
++}
++
++void au_dtime_revert(struct au_dtime *dt)
++{
++	struct iattr attr;
++	int err;
++
++	attr.ia_atime = dt->dt_atime;
++	attr.ia_mtime = dt->dt_mtime;
++	attr.ia_valid = ATTR_FORCE | ATTR_MTIME | ATTR_MTIME_SET
++		| ATTR_ATIME | ATTR_ATIME_SET;
++
++	/* no delegation since this is a directory */
++	err = vfsub_notify_change(&dt->dt_h_path, &attr, /*delegated*/NULL);
++	if (unlikely(err))
++		pr_warn("restoring timestamps failed(%d). ignored\n", err);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* internal use only */
++struct au_cpup_reg_attr {
++	int		valid;
++	struct kstat	st;
++	unsigned int	iflags; /* inode->i_flags */
++};
++
++static noinline_for_stack
++int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src,
++	       struct au_cpup_reg_attr *h_src_attr)
++{
++	int err, sbits, icex;
++	unsigned int mnt_flags;
++	unsigned char verbose;
++	struct iattr ia;
++	struct path h_path;
++	struct inode *h_isrc, *h_idst;
++	struct kstat *h_st;
++	struct au_branch *br;
++
++	h_path.dentry = au_h_dptr(dst, bindex);
++	h_idst = d_inode(h_path.dentry);
++	br = au_sbr(dst->d_sb, bindex);
++	h_path.mnt = au_br_mnt(br);
++	h_isrc = d_inode(h_src);
++	ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID
++		| ATTR_ATIME | ATTR_MTIME
++		| ATTR_ATIME_SET | ATTR_MTIME_SET;
++	if (h_src_attr && h_src_attr->valid) {
++		h_st = &h_src_attr->st;
++		ia.ia_uid = h_st->uid;
++		ia.ia_gid = h_st->gid;
++		ia.ia_atime = h_st->atime;
++		ia.ia_mtime = h_st->mtime;
++		if (h_idst->i_mode != h_st->mode
++		    && !S_ISLNK(h_idst->i_mode)) {
++			ia.ia_valid |= ATTR_MODE;
++			ia.ia_mode = h_st->mode;
++		}
++		sbits = !!(h_st->mode & (S_ISUID | S_ISGID));
++		au_cpup_attr_flags(h_idst, h_src_attr->iflags);
++	} else {
++		ia.ia_uid = h_isrc->i_uid;
++		ia.ia_gid = h_isrc->i_gid;
++		ia.ia_atime = h_isrc->i_atime;
++		ia.ia_mtime = h_isrc->i_mtime;
++		if (h_idst->i_mode != h_isrc->i_mode
++		    && !S_ISLNK(h_idst->i_mode)) {
++			ia.ia_valid |= ATTR_MODE;
++			ia.ia_mode = h_isrc->i_mode;
++		}
++		sbits = !!(h_isrc->i_mode & (S_ISUID | S_ISGID));
++		au_cpup_attr_flags(h_idst, h_isrc->i_flags);
++	}
++	/* no delegation since it is just created */
++	err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
++
++	/* is this nfs only? */
++	if (!err && sbits && au_test_nfs(h_path.dentry->d_sb)) {
++		ia.ia_valid = ATTR_FORCE | ATTR_MODE;
++		ia.ia_mode = h_isrc->i_mode;
++		err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
++	}
++
++	icex = br->br_perm & AuBrAttr_ICEX;
++	if (!err) {
++		mnt_flags = au_mntflags(dst->d_sb);
++		verbose = !!au_opt_test(mnt_flags, VERBOSE);
++		err = au_cpup_xattr(h_path.dentry, h_src, icex, verbose);
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_do_copy_file(struct file *dst, struct file *src, loff_t len,
++			   char *buf, unsigned long blksize)
++{
++	int err;
++	size_t sz, rbytes, wbytes;
++	unsigned char all_zero;
++	char *p, *zp;
++	struct inode *h_inode;
++	/* reduce stack usage */
++	struct iattr *ia;
++
++	zp = page_address(ZERO_PAGE(0));
++	if (unlikely(!zp))
++		return -ENOMEM; /* possible? */
++
++	err = 0;
++	all_zero = 0;
++	while (len) {
++		AuDbg("len %lld\n", len);
++		sz = blksize;
++		if (len < blksize)
++			sz = len;
++
++		rbytes = 0;
++		/* todo: signal_pending? */
++		while (!rbytes || err == -EAGAIN || err == -EINTR) {
++			rbytes = vfsub_read_k(src, buf, sz, &src->f_pos);
++			err = rbytes;
++		}
++		if (unlikely(err < 0))
++			break;
++
++		all_zero = 0;
++		if (len >= rbytes && rbytes == blksize)
++			all_zero = !memcmp(buf, zp, rbytes);
++		if (!all_zero) {
++			wbytes = rbytes;
++			p = buf;
++			while (wbytes) {
++				size_t b;
++
++				b = vfsub_write_k(dst, p, wbytes, &dst->f_pos);
++				err = b;
++				/* todo: signal_pending? */
++				if (unlikely(err == -EAGAIN || err == -EINTR))
++					continue;
++				if (unlikely(err < 0))
++					break;
++				wbytes -= b;
++				p += b;
++			}
++			if (unlikely(err < 0))
++				break;
++		} else {
++			loff_t res;
++
++			AuLabel(hole);
++			res = vfsub_llseek(dst, rbytes, SEEK_CUR);
++			err = res;
++			if (unlikely(res < 0))
++				break;
++		}
++		len -= rbytes;
++		err = 0;
++	}
++
++	/* the last block may be a hole */
++	if (!err && all_zero) {
++		AuLabel(last hole);
++
++		err = 1;
++		if (au_test_nfs(dst->f_path.dentry->d_sb)) {
++			/* nfs requires this step to make last hole */
++			/* is this only nfs? */
++			do {
++				/* todo: signal_pending? */
++				err = vfsub_write_k(dst, "\0", 1, &dst->f_pos);
++			} while (err == -EAGAIN || err == -EINTR);
++			if (err == 1)
++				dst->f_pos--;
++		}
++
++		if (err == 1) {
++			ia = (void *)buf;
++			ia->ia_size = dst->f_pos;
++			ia->ia_valid = ATTR_SIZE | ATTR_FILE;
++			ia->ia_file = dst;
++			h_inode = file_inode(dst);
++			inode_lock_nested(h_inode, AuLsc_I_CHILD2);
++			/* no delegation since it is just created */
++			err = vfsub_notify_change(&dst->f_path, ia,
++						  /*delegated*/NULL);
++			inode_unlock(h_inode);
++		}
++	}
++
++	return err;
++}
++
++int au_copy_file(struct file *dst, struct file *src, loff_t len)
++{
++	int err;
++	unsigned long blksize;
++	unsigned char do_kfree;
++	char *buf;
++	struct super_block *h_sb;
++
++	err = -ENOMEM;
++	h_sb = file_inode(dst)->i_sb;
++	blksize = h_sb->s_blocksize;
++	if (!blksize || PAGE_SIZE < blksize)
++		blksize = PAGE_SIZE;
++	AuDbg("blksize %lu\n", blksize);
++	do_kfree = (blksize != PAGE_SIZE && blksize >= sizeof(struct iattr *));
++	if (do_kfree)
++		buf = kmalloc(blksize, GFP_NOFS);
++	else
++		buf = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!buf))
++		goto out;
++
++	if (len > (1 << 22))
++		AuDbg("copying a large file %lld\n", (long long)len);
++
++	src->f_pos = 0;
++	dst->f_pos = 0;
++	err = au_do_copy_file(dst, src, len, buf, blksize);
++	if (do_kfree) {
++		AuDebugOn(!au_kfree_do_sz_test(blksize));
++		au_kfree_do_rcu(buf);
++	} else
++		free_page((unsigned long)buf);
++
++out:
++	return err;
++}
++
++static int au_do_copy(struct file *dst, struct file *src, loff_t len)
++{
++	int err;
++	struct super_block *h_src_sb;
++	struct inode *h_src_inode;
++
++	h_src_inode = file_inode(src);
++	h_src_sb = h_src_inode->i_sb;
++
++	/* XFS acquires inode_lock */
++	if (!au_test_xfs(h_src_sb))
++		err = au_copy_file(dst, src, len);
++	else {
++		inode_unlock_shared(h_src_inode);
++		err = au_copy_file(dst, src, len);
++		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
++	}
++
++	return err;
++}
++
++static int au_clone_or_copy(struct file *dst, struct file *src, loff_t len)
++{
++	int err;
++	loff_t lo;
++	struct super_block *h_src_sb;
++	struct inode *h_src_inode;
++
++	h_src_inode = file_inode(src);
++	h_src_sb = h_src_inode->i_sb;
++	if (h_src_sb != file_inode(dst)->i_sb
++	    || !dst->f_op->remap_file_range) {
++		err = au_do_copy(dst, src, len);
++		goto out;
++	}
++
++	if (!au_test_nfs(h_src_sb)) {
++		inode_unlock_shared(h_src_inode);
++		lo = vfsub_clone_file_range(src, dst, len);
++		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
++	} else
++		lo = vfsub_clone_file_range(src, dst, len);
++	if (lo == len) {
++		err = 0;
++		goto out; /* success */
++	} else if (lo >= 0)
++		/* todo: possible? */
++		/* paritially succeeded */
++		AuDbg("lo %lld, len %lld. Retrying.\n", lo, len);
++	else if (lo != -EOPNOTSUPP) {
++		/* older XFS has a condition in cloning */
++		err = lo;
++		goto out;
++	}
++
++	/* the backend fs on NFS may not support cloning */
++	err = au_do_copy(dst, src, len);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * to support a sparse file which is opened with O_APPEND,
++ * we need to close the file.
++ */
++static int au_cp_regular(struct au_cp_generic *cpg)
++{
++	int err, i;
++	enum { SRC, DST };
++	struct {
++		aufs_bindex_t bindex;
++		unsigned int flags;
++		struct dentry *dentry;
++		int force_wr;
++		struct file *file;
++	} *f, file[] = {
++		{
++			.bindex = cpg->bsrc,
++			.flags = O_RDONLY | O_NOATIME | O_LARGEFILE,
++		},
++		{
++			.bindex = cpg->bdst,
++			.flags = O_WRONLY | O_NOATIME | O_LARGEFILE,
++			.force_wr = !!au_ftest_cpup(cpg->flags, RWDST),
++		}
++	};
++	struct au_branch *br;
++	struct super_block *sb, *h_src_sb;
++	struct inode *h_src_inode;
++	struct task_struct *tsk = current;
++
++	/* bsrc branch can be ro/rw. */
++	sb = cpg->dentry->d_sb;
++	f = file;
++	for (i = 0; i < 2; i++, f++) {
++		f->dentry = au_h_dptr(cpg->dentry, f->bindex);
++		f->file = au_h_open(cpg->dentry, f->bindex, f->flags,
++				    /*file*/NULL, f->force_wr);
++		if (IS_ERR(f->file)) {
++			err = PTR_ERR(f->file);
++			if (i == SRC)
++				goto out;
++			else
++				goto out_src;
++		}
++	}
++
++	/* try stopping to update while we copyup */
++	h_src_inode = d_inode(file[SRC].dentry);
++	h_src_sb = h_src_inode->i_sb;
++	if (!au_test_nfs(h_src_sb))
++		IMustLock(h_src_inode);
++	err = au_clone_or_copy(file[DST].file, file[SRC].file, cpg->len);
++
++	/* i wonder if we had O_NO_DELAY_FPUT flag */
++	if (tsk->flags & PF_KTHREAD)
++		__fput_sync(file[DST].file);
++	else {
++		/* it happened actually */
++		fput(file[DST].file);
++		/*
++		 * too bad.
++		 * we have to call both since we don't know which place the file
++		 * was added to.
++		 */
++		task_work_run();
++		flush_delayed_fput();
++	}
++	br = au_sbr(sb, file[DST].bindex);
++	au_lcnt_dec(&br->br_nfiles);
++
++out_src:
++	fput(file[SRC].file);
++	br = au_sbr(sb, file[SRC].bindex);
++	au_lcnt_dec(&br->br_nfiles);
++out:
++	return err;
++}
++
++static int au_do_cpup_regular(struct au_cp_generic *cpg,
++			      struct au_cpup_reg_attr *h_src_attr)
++{
++	int err, rerr;
++	loff_t l;
++	struct path h_path;
++	struct inode *h_src_inode, *h_dst_inode;
++
++	err = 0;
++	h_src_inode = au_h_iptr(d_inode(cpg->dentry), cpg->bsrc);
++	l = i_size_read(h_src_inode);
++	if (cpg->len == -1 || l < cpg->len)
++		cpg->len = l;
++	if (cpg->len) {
++		/* try stopping to update while we are referencing */
++		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
++		au_pin_hdir_unlock(cpg->pin);
++
++		h_path.dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
++		h_path.mnt = au_sbr_mnt(cpg->dentry->d_sb, cpg->bsrc);
++		h_src_attr->iflags = h_src_inode->i_flags;
++		if (!au_test_nfs(h_src_inode->i_sb))
++			err = vfsub_getattr(&h_path, &h_src_attr->st);
++		else {
++			inode_unlock_shared(h_src_inode);
++			err = vfsub_getattr(&h_path, &h_src_attr->st);
++			inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
++		}
++		if (unlikely(err)) {
++			inode_unlock_shared(h_src_inode);
++			goto out;
++		}
++		h_src_attr->valid = 1;
++		if (!au_test_nfs(h_src_inode->i_sb)) {
++			err = au_cp_regular(cpg);
++			inode_unlock_shared(h_src_inode);
++		} else {
++			inode_unlock_shared(h_src_inode);
++			err = au_cp_regular(cpg);
++		}
++		rerr = au_pin_hdir_relock(cpg->pin);
++		if (!err && rerr)
++			err = rerr;
++	}
++	if (!err && (h_src_inode->i_state & I_LINKABLE)) {
++		h_path.dentry = au_h_dptr(cpg->dentry, cpg->bdst);
++		h_dst_inode = d_inode(h_path.dentry);
++		spin_lock(&h_dst_inode->i_lock);
++		h_dst_inode->i_state |= I_LINKABLE;
++		spin_unlock(&h_dst_inode->i_lock);
++	}
++
++out:
++	return err;
++}
++
++static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src,
++			      struct inode *h_dir)
++{
++	int err, symlen;
++	mm_segment_t old_fs;
++	union {
++		char *k;
++		char __user *u;
++	} sym;
++
++	err = -ENOMEM;
++	sym.k = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!sym.k))
++		goto out;
++
++	/* unnecessary to support mmap_sem since symlink is not mmap-able */
++	old_fs = get_fs();
++	set_fs(KERNEL_DS);
++	symlen = vfs_readlink(h_src, sym.u, PATH_MAX);
++	err = symlen;
++	set_fs(old_fs);
++
++	if (symlen > 0) {
++		sym.k[symlen] = 0;
++		err = vfsub_symlink(h_dir, h_path, sym.k);
++	}
++	free_page((unsigned long)sym.k);
++
++out:
++	return err;
++}
++
++/*
++ * regardless 'acl' option, reset all ACL.
++ * All ACL will be copied up later from the original entry on the lower branch.
++ */
++static int au_reset_acl(struct inode *h_dir, struct path *h_path, umode_t mode)
++{
++	int err;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++
++	h_dentry = h_path->dentry;
++	h_inode = d_inode(h_dentry);
++	/* forget_all_cached_acls(h_inode)); */
++	err = vfsub_removexattr(h_dentry, XATTR_NAME_POSIX_ACL_ACCESS);
++	AuTraceErr(err);
++	if (err == -EOPNOTSUPP)
++		err = 0;
++	if (!err)
++		err = vfsub_acl_chmod(h_inode, mode);
++
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_do_cpup_dir(struct au_cp_generic *cpg, struct dentry *dst_parent,
++			  struct inode *h_dir, struct path *h_path)
++{
++	int err;
++	struct inode *dir, *inode;
++
++	err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT);
++	AuTraceErr(err);
++	if (err == -EOPNOTSUPP)
++		err = 0;
++	if (unlikely(err))
++		goto out;
++
++	/*
++	 * strange behaviour from the users view,
++	 * particularly setattr case
++	 */
++	dir = d_inode(dst_parent);
++	if (au_ibtop(dir) == cpg->bdst)
++		au_cpup_attr_nlink(dir, /*force*/1);
++	inode = d_inode(cpg->dentry);
++	au_cpup_attr_nlink(inode, /*force*/1);
++
++out:
++	return err;
++}
++
++static noinline_for_stack
++int cpup_entry(struct au_cp_generic *cpg, struct dentry *dst_parent,
++	       struct au_cpup_reg_attr *h_src_attr)
++{
++	int err;
++	umode_t mode;
++	unsigned int mnt_flags;
++	unsigned char isdir, isreg, force;
++	const unsigned char do_dt = !!au_ftest_cpup(cpg->flags, DTIME);
++	struct au_dtime dt;
++	struct path h_path;
++	struct dentry *h_src, *h_dst, *h_parent;
++	struct inode *h_inode, *h_dir;
++	struct super_block *sb;
++
++	/* bsrc branch can be ro/rw. */
++	h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
++	h_inode = d_inode(h_src);
++	AuDebugOn(h_inode != au_h_iptr(d_inode(cpg->dentry), cpg->bsrc));
++
++	/* try stopping to be referenced while we are creating */
++	h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
++	if (au_ftest_cpup(cpg->flags, RENAME))
++		AuDebugOn(strncmp(h_dst->d_name.name, AUFS_WH_PFX,
++				  AUFS_WH_PFX_LEN));
++	h_parent = h_dst->d_parent; /* dir inode is locked */
++	h_dir = d_inode(h_parent);
++	IMustLock(h_dir);
++	AuDebugOn(h_parent != h_dst->d_parent);
++
++	sb = cpg->dentry->d_sb;
++	h_path.mnt = au_sbr_mnt(sb, cpg->bdst);
++	if (do_dt) {
++		h_path.dentry = h_parent;
++		au_dtime_store(&dt, dst_parent, &h_path);
++	}
++	h_path.dentry = h_dst;
++
++	isreg = 0;
++	isdir = 0;
++	mode = h_inode->i_mode;
++	switch (mode & S_IFMT) {
++	case S_IFREG:
++		isreg = 1;
++		err = vfsub_create(h_dir, &h_path, 0600, /*want_excl*/true);
++		if (!err)
++			err = au_do_cpup_regular(cpg, h_src_attr);
++		break;
++	case S_IFDIR:
++		isdir = 1;
++		err = vfsub_mkdir(h_dir, &h_path, mode);
++		if (!err)
++			err = au_do_cpup_dir(cpg, dst_parent, h_dir, &h_path);
++		break;
++	case S_IFLNK:
++		err = au_do_cpup_symlink(&h_path, h_src, h_dir);
++		break;
++	case S_IFCHR:
++	case S_IFBLK:
++		AuDebugOn(!capable(CAP_MKNOD));
++		/*FALLTHROUGH*/
++	case S_IFIFO:
++	case S_IFSOCK:
++		err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev);
++		break;
++	default:
++		AuIOErr("Unknown inode type 0%o\n", mode);
++		err = -EIO;
++	}
++	if (!err)
++		err = au_reset_acl(h_dir, &h_path, mode);
++
++	mnt_flags = au_mntflags(sb);
++	if (!au_opt_test(mnt_flags, UDBA_NONE)
++	    && !isdir
++	    && au_opt_test(mnt_flags, XINO)
++	    && (h_inode->i_nlink == 1
++		|| (h_inode->i_state & I_LINKABLE))
++	    /* todo: unnecessary? */
++	    /* && d_inode(cpg->dentry)->i_nlink == 1 */
++	    && cpg->bdst < cpg->bsrc
++	    && !au_ftest_cpup(cpg->flags, KEEPLINO))
++		au_xino_write(sb, cpg->bsrc, h_inode->i_ino, /*ino*/0);
++		/* ignore this error */
++
++	if (!err) {
++		force = 0;
++		if (isreg) {
++			force = !!cpg->len;
++			if (cpg->len == -1)
++				force = !!i_size_read(h_inode);
++		}
++		au_fhsm_wrote(sb, cpg->bdst, force);
++	}
++
++	if (do_dt)
++		au_dtime_revert(&dt);
++	return err;
++}
++
++static int au_do_ren_after_cpup(struct au_cp_generic *cpg, struct path *h_path)
++{
++	int err;
++	struct dentry *dentry, *h_dentry, *h_parent, *parent;
++	struct inode *h_dir;
++	aufs_bindex_t bdst;
++
++	dentry = cpg->dentry;
++	bdst = cpg->bdst;
++	h_dentry = au_h_dptr(dentry, bdst);
++	if (!au_ftest_cpup(cpg->flags, OVERWRITE)) {
++		dget(h_dentry);
++		au_set_h_dptr(dentry, bdst, NULL);
++		err = au_lkup_neg(dentry, bdst, /*wh*/0);
++		if (!err)
++			h_path->dentry = dget(au_h_dptr(dentry, bdst));
++		au_set_h_dptr(dentry, bdst, h_dentry);
++	} else {
++		err = 0;
++		parent = dget_parent(dentry);
++		h_parent = au_h_dptr(parent, bdst);
++		dput(parent);
++		h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent);
++		if (IS_ERR(h_path->dentry))
++			err = PTR_ERR(h_path->dentry);
++	}
++	if (unlikely(err))
++		goto out;
++
++	h_parent = h_dentry->d_parent; /* dir inode is locked */
++	h_dir = d_inode(h_parent);
++	IMustLock(h_dir);
++	AuDbg("%pd %pd\n", h_dentry, h_path->dentry);
++	/* no delegation since it is just created */
++	err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL,
++			   /*flags*/0);
++	dput(h_path->dentry);
++
++out:
++	return err;
++}
++
++/*
++ * copyup the @dentry from @bsrc to @bdst.
++ * the caller must set the both of lower dentries.
++ * @len is for truncating when it is -1 copyup the entire file.
++ * in link/rename cases, @dst_parent may be different from the real one.
++ * basic->bsrc can be larger than basic->bdst.
++ * aufs doesn't touch the credential so
++ * security_inode_copy_up{,_xattr}() are unnecessary.
++ */
++static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
++{
++	int err, rerr;
++	aufs_bindex_t old_ibtop;
++	unsigned char isdir, plink;
++	struct dentry *h_src, *h_dst, *h_parent;
++	struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode;
++	struct super_block *sb;
++	struct au_branch *br;
++	/* to reduce stack size */
++	struct {
++		struct au_dtime dt;
++		struct path h_path;
++		struct au_cpup_reg_attr h_src_attr;
++	} *a;
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++	a->h_src_attr.valid = 0;
++
++	sb = cpg->dentry->d_sb;
++	br = au_sbr(sb, cpg->bdst);
++	a->h_path.mnt = au_br_mnt(br);
++	h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
++	h_parent = h_dst->d_parent; /* dir inode is locked */
++	h_dir = d_inode(h_parent);
++	IMustLock(h_dir);
++
++	h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
++	inode = d_inode(cpg->dentry);
++
++	if (!dst_parent)
++		dst_parent = dget_parent(cpg->dentry);
++	else
++		dget(dst_parent);
++
++	plink = !!au_opt_test(au_mntflags(sb), PLINK);
++	dst_inode = au_h_iptr(inode, cpg->bdst);
++	if (dst_inode) {
++		if (unlikely(!plink)) {
++			err = -EIO;
++			AuIOErr("hi%lu(i%lu) exists on b%d "
++				"but plink is disabled\n",
++				dst_inode->i_ino, inode->i_ino, cpg->bdst);
++			goto out_parent;
++		}
++
++		if (dst_inode->i_nlink) {
++			const int do_dt = au_ftest_cpup(cpg->flags, DTIME);
++
++			h_src = au_plink_lkup(inode, cpg->bdst);
++			err = PTR_ERR(h_src);
++			if (IS_ERR(h_src))
++				goto out_parent;
++			if (unlikely(d_is_negative(h_src))) {
++				err = -EIO;
++				AuIOErr("i%lu exists on b%d "
++					"but not pseudo-linked\n",
++					inode->i_ino, cpg->bdst);
++				dput(h_src);
++				goto out_parent;
++			}
++
++			if (do_dt) {
++				a->h_path.dentry = h_parent;
++				au_dtime_store(&a->dt, dst_parent, &a->h_path);
++			}
++
++			a->h_path.dentry = h_dst;
++			delegated = NULL;
++			err = vfsub_link(h_src, h_dir, &a->h_path, &delegated);
++			if (!err && au_ftest_cpup(cpg->flags, RENAME))
++				err = au_do_ren_after_cpup(cpg, &a->h_path);
++			if (do_dt)
++				au_dtime_revert(&a->dt);
++			if (unlikely(err == -EWOULDBLOCK)) {
++				pr_warn("cannot retry for NFSv4 delegation"
++					" for an internal link\n");
++				iput(delegated);
++			}
++			dput(h_src);
++			goto out_parent;
++		} else
++			/* todo: cpup_wh_file? */
++			/* udba work */
++			au_update_ibrange(inode, /*do_put_zero*/1);
++	}
++
++	isdir = S_ISDIR(inode->i_mode);
++	old_ibtop = au_ibtop(inode);
++	err = cpup_entry(cpg, dst_parent, &a->h_src_attr);
++	if (unlikely(err))
++		goto out_rev;
++	dst_inode = d_inode(h_dst);
++	inode_lock_nested(dst_inode, AuLsc_I_CHILD2);
++	/* todo: necessary? */
++	/* au_pin_hdir_unlock(cpg->pin); */
++
++	err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr);
++	if (unlikely(err)) {
++		/* todo: necessary? */
++		/* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */
++		inode_unlock(dst_inode);
++		goto out_rev;
++	}
++
++	if (cpg->bdst < old_ibtop) {
++		if (S_ISREG(inode->i_mode)) {
++			err = au_dy_iaop(inode, cpg->bdst, dst_inode);
++			if (unlikely(err)) {
++				/* ignore an error */
++				/* au_pin_hdir_relock(cpg->pin); */
++				inode_unlock(dst_inode);
++				goto out_rev;
++			}
++		}
++		au_set_ibtop(inode, cpg->bdst);
++	} else
++		au_set_ibbot(inode, cpg->bdst);
++	au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode),
++		      au_hi_flags(inode, isdir));
++
++	/* todo: necessary? */
++	/* err = au_pin_hdir_relock(cpg->pin); */
++	inode_unlock(dst_inode);
++	if (unlikely(err))
++		goto out_rev;
++
++	src_inode = d_inode(h_src);
++	if (!isdir
++	    && (src_inode->i_nlink > 1
++		|| src_inode->i_state & I_LINKABLE)
++	    && plink)
++		au_plink_append(inode, cpg->bdst, h_dst);
++
++	if (au_ftest_cpup(cpg->flags, RENAME)) {
++		a->h_path.dentry = h_dst;
++		err = au_do_ren_after_cpup(cpg, &a->h_path);
++	}
++	if (!err)
++		goto out_parent; /* success */
++
++	/* revert */
++out_rev:
++	a->h_path.dentry = h_parent;
++	au_dtime_store(&a->dt, dst_parent, &a->h_path);
++	a->h_path.dentry = h_dst;
++	rerr = 0;
++	if (d_is_positive(h_dst)) {
++		if (!isdir) {
++			/* no delegation since it is just created */
++			rerr = vfsub_unlink(h_dir, &a->h_path,
++					    /*delegated*/NULL, /*force*/0);
++		} else
++			rerr = vfsub_rmdir(h_dir, &a->h_path);
++	}
++	au_dtime_revert(&a->dt);
++	if (rerr) {
++		AuIOErr("failed removing broken entry(%d, %d)\n", err, rerr);
++		err = -EIO;
++	}
++out_parent:
++	dput(dst_parent);
++	au_kfree_rcu(a);
++out:
++	return err;
++}
++
++#if 0 /* reserved */
++struct au_cpup_single_args {
++	int *errp;
++	struct au_cp_generic *cpg;
++	struct dentry *dst_parent;
++};
++
++static void au_call_cpup_single(void *args)
++{
++	struct au_cpup_single_args *a = args;
++
++	au_pin_hdir_acquire_nest(a->cpg->pin);
++	*a->errp = au_cpup_single(a->cpg, a->dst_parent);
++	au_pin_hdir_release(a->cpg->pin);
++}
++#endif
++
++/*
++ * prevent SIGXFSZ in copy-up.
++ * testing CAP_MKNOD is for generic fs,
++ * but CAP_FSETID is for xfs only, currently.
++ */
++static int au_cpup_sio_test(struct au_pin *pin, umode_t mode)
++{
++	int do_sio;
++	struct super_block *sb;
++	struct inode *h_dir;
++
++	do_sio = 0;
++	sb = au_pinned_parent(pin)->d_sb;
++	if (!au_wkq_test()
++	    && (!au_sbi(sb)->si_plink_maint_pid
++		|| au_plink_maint(sb, AuLock_NOPLM))) {
++		switch (mode & S_IFMT) {
++		case S_IFREG:
++			/* no condition about RLIMIT_FSIZE and the file size */
++			do_sio = 1;
++			break;
++		case S_IFCHR:
++		case S_IFBLK:
++			do_sio = !capable(CAP_MKNOD);
++			break;
++		}
++		if (!do_sio)
++			do_sio = ((mode & (S_ISUID | S_ISGID))
++				  && !capable(CAP_FSETID));
++		/* this workaround may be removed in the future */
++		if (!do_sio) {
++			h_dir = au_pinned_h_dir(pin);
++			do_sio = h_dir->i_mode & S_ISVTX;
++		}
++	}
++
++	return do_sio;
++}
++
++#if 0 /* reserved */
++int au_sio_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
++{
++	int err, wkq_err;
++	struct dentry *h_dentry;
++
++	h_dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
++	if (!au_cpup_sio_test(pin, d_inode(h_dentry)->i_mode))
++		err = au_cpup_single(cpg, dst_parent);
++	else {
++		struct au_cpup_single_args args = {
++			.errp		= &err,
++			.cpg		= cpg,
++			.dst_parent	= dst_parent
++		};
++		wkq_err = au_wkq_wait(au_call_cpup_single, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	return err;
++}
++#endif
++
++/*
++ * copyup the @dentry from the first active lower branch to @bdst,
++ * using au_cpup_single().
++ */
++static int au_cpup_simple(struct au_cp_generic *cpg)
++{
++	int err;
++	unsigned int flags_orig;
++	struct dentry *dentry;
++
++	AuDebugOn(cpg->bsrc < 0);
++
++	dentry = cpg->dentry;
++	DiMustWriteLock(dentry);
++
++	err = au_lkup_neg(dentry, cpg->bdst, /*wh*/1);
++	if (!err) {
++		flags_orig = cpg->flags;
++		au_fset_cpup(cpg->flags, RENAME);
++		err = au_cpup_single(cpg, NULL);
++		cpg->flags = flags_orig;
++		if (!err)
++			return 0; /* success */
++
++		/* revert */
++		au_set_h_dptr(dentry, cpg->bdst, NULL);
++		au_set_dbtop(dentry, cpg->bsrc);
++	}
++
++	return err;
++}
++
++struct au_cpup_simple_args {
++	int *errp;
++	struct au_cp_generic *cpg;
++};
++
++static void au_call_cpup_simple(void *args)
++{
++	struct au_cpup_simple_args *a = args;
++
++	au_pin_hdir_acquire_nest(a->cpg->pin);
++	*a->errp = au_cpup_simple(a->cpg);
++	au_pin_hdir_release(a->cpg->pin);
++}
++
++static int au_do_sio_cpup_simple(struct au_cp_generic *cpg)
++{
++	int err, wkq_err;
++	struct dentry *dentry, *parent;
++	struct file *h_file;
++	struct inode *h_dir;
++
++	dentry = cpg->dentry;
++	h_file = NULL;
++	if (au_ftest_cpup(cpg->flags, HOPEN)) {
++		AuDebugOn(cpg->bsrc < 0);
++		h_file = au_h_open_pre(dentry, cpg->bsrc, /*force_wr*/0);
++		err = PTR_ERR(h_file);
++		if (IS_ERR(h_file))
++			goto out;
++	}
++
++	parent = dget_parent(dentry);
++	h_dir = au_h_iptr(d_inode(parent), cpg->bdst);
++	if (!au_test_h_perm_sio(h_dir, MAY_EXEC | MAY_WRITE)
++	    && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
++		err = au_cpup_simple(cpg);
++	else {
++		struct au_cpup_simple_args args = {
++			.errp		= &err,
++			.cpg		= cpg
++		};
++		wkq_err = au_wkq_wait(au_call_cpup_simple, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	dput(parent);
++	if (h_file)
++		au_h_open_post(dentry, cpg->bsrc, h_file);
++
++out:
++	return err;
++}
++
++int au_sio_cpup_simple(struct au_cp_generic *cpg)
++{
++	aufs_bindex_t bsrc, bbot;
++	struct dentry *dentry, *h_dentry;
++
++	if (cpg->bsrc < 0) {
++		dentry = cpg->dentry;
++		bbot = au_dbbot(dentry);
++		for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) {
++			h_dentry = au_h_dptr(dentry, bsrc);
++			if (h_dentry) {
++				AuDebugOn(d_is_negative(h_dentry));
++				break;
++			}
++		}
++		AuDebugOn(bsrc > bbot);
++		cpg->bsrc = bsrc;
++	}
++	AuDebugOn(cpg->bsrc <= cpg->bdst);
++	return au_do_sio_cpup_simple(cpg);
++}
++
++int au_sio_cpdown_simple(struct au_cp_generic *cpg)
++{
++	AuDebugOn(cpg->bdst <= cpg->bsrc);
++	return au_do_sio_cpup_simple(cpg);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * copyup the deleted file for writing.
++ */
++static int au_do_cpup_wh(struct au_cp_generic *cpg, struct dentry *wh_dentry,
++			 struct file *file)
++{
++	int err;
++	unsigned int flags_orig;
++	aufs_bindex_t bsrc_orig;
++	struct au_dinfo *dinfo;
++	struct {
++		struct au_hdentry *hd;
++		struct dentry *h_dentry;
++	} hdst, hsrc;
++
++	dinfo = au_di(cpg->dentry);
++	AuRwMustWriteLock(&dinfo->di_rwsem);
++
++	bsrc_orig = cpg->bsrc;
++	cpg->bsrc = dinfo->di_btop;
++	hdst.hd = au_hdentry(dinfo, cpg->bdst);
++	hdst.h_dentry = hdst.hd->hd_dentry;
++	hdst.hd->hd_dentry = wh_dentry;
++	dinfo->di_btop = cpg->bdst;
++
++	hsrc.h_dentry = NULL;
++	if (file) {
++		hsrc.hd = au_hdentry(dinfo, cpg->bsrc);
++		hsrc.h_dentry = hsrc.hd->hd_dentry;
++		hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry;
++	}
++	flags_orig = cpg->flags;
++	cpg->flags = !AuCpup_DTIME;
++	err = au_cpup_single(cpg, /*h_parent*/NULL);
++	cpg->flags = flags_orig;
++	if (file) {
++		if (!err)
++			err = au_reopen_nondir(file);
++		hsrc.hd->hd_dentry = hsrc.h_dentry;
++	}
++	hdst.hd->hd_dentry = hdst.h_dentry;
++	dinfo->di_btop = cpg->bsrc;
++	cpg->bsrc = bsrc_orig;
++
++	return err;
++}
++
++static int au_cpup_wh(struct au_cp_generic *cpg, struct file *file)
++{
++	int err;
++	aufs_bindex_t bdst;
++	struct au_dtime dt;
++	struct dentry *dentry, *parent, *h_parent, *wh_dentry;
++	struct au_branch *br;
++	struct path h_path;
++
++	dentry = cpg->dentry;
++	bdst = cpg->bdst;
++	br = au_sbr(dentry->d_sb, bdst);
++	parent = dget_parent(dentry);
++	h_parent = au_h_dptr(parent, bdst);
++	wh_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out;
++
++	h_path.dentry = h_parent;
++	h_path.mnt = au_br_mnt(br);
++	au_dtime_store(&dt, parent, &h_path);
++	err = au_do_cpup_wh(cpg, wh_dentry, file);
++	if (unlikely(err))
++		goto out_wh;
++
++	dget(wh_dentry);
++	h_path.dentry = wh_dentry;
++	if (!d_is_dir(wh_dentry)) {
++		/* no delegation since it is just created */
++		err = vfsub_unlink(d_inode(h_parent), &h_path,
++				   /*delegated*/NULL, /*force*/0);
++	} else
++		err = vfsub_rmdir(d_inode(h_parent), &h_path);
++	if (unlikely(err)) {
++		AuIOErr("failed remove copied-up tmp file %pd(%d)\n",
++			wh_dentry, err);
++		err = -EIO;
++	}
++	au_dtime_revert(&dt);
++	au_set_hi_wh(d_inode(dentry), bdst, wh_dentry);
++
++out_wh:
++	dput(wh_dentry);
++out:
++	dput(parent);
++	return err;
++}
++
++struct au_cpup_wh_args {
++	int *errp;
++	struct au_cp_generic *cpg;
++	struct file *file;
++};
++
++static void au_call_cpup_wh(void *args)
++{
++	struct au_cpup_wh_args *a = args;
++
++	au_pin_hdir_acquire_nest(a->cpg->pin);
++	*a->errp = au_cpup_wh(a->cpg, a->file);
++	au_pin_hdir_release(a->cpg->pin);
++}
++
++int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file)
++{
++	int err, wkq_err;
++	aufs_bindex_t bdst;
++	struct dentry *dentry, *parent, *h_orph, *h_parent;
++	struct inode *dir, *h_dir, *h_tmpdir;
++	struct au_wbr *wbr;
++	struct au_pin wh_pin, *pin_orig;
++
++	dentry = cpg->dentry;
++	bdst = cpg->bdst;
++	parent = dget_parent(dentry);
++	dir = d_inode(parent);
++	h_orph = NULL;
++	h_parent = NULL;
++	h_dir = au_igrab(au_h_iptr(dir, bdst));
++	h_tmpdir = h_dir;
++	pin_orig = NULL;
++	if (!h_dir->i_nlink) {
++		wbr = au_sbr(dentry->d_sb, bdst)->br_wbr;
++		h_orph = wbr->wbr_orph;
++
++		h_parent = dget(au_h_dptr(parent, bdst));
++		au_set_h_dptr(parent, bdst, dget(h_orph));
++		h_tmpdir = d_inode(h_orph);
++		au_set_h_iptr(dir, bdst, au_igrab(h_tmpdir), /*flags*/0);
++
++		inode_lock_nested(h_tmpdir, AuLsc_I_PARENT3);
++		/* todo: au_h_open_pre()? */
++
++		pin_orig = cpg->pin;
++		au_pin_init(&wh_pin, dentry, bdst, AuLsc_DI_PARENT,
++			    AuLsc_I_PARENT3, cpg->pin->udba, AuPin_DI_LOCKED);
++		cpg->pin = &wh_pin;
++	}
++
++	if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE)
++	    && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
++		err = au_cpup_wh(cpg, file);
++	else {
++		struct au_cpup_wh_args args = {
++			.errp	= &err,
++			.cpg	= cpg,
++			.file	= file
++		};
++		wkq_err = au_wkq_wait(au_call_cpup_wh, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	if (h_orph) {
++		inode_unlock(h_tmpdir);
++		/* todo: au_h_open_post()? */
++		au_set_h_iptr(dir, bdst, au_igrab(h_dir), /*flags*/0);
++		au_set_h_dptr(parent, bdst, h_parent);
++		AuDebugOn(!pin_orig);
++		cpg->pin = pin_orig;
++	}
++	iput(h_dir);
++	dput(parent);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * generic routine for both of copy-up and copy-down.
++ */
++/* cf. revalidate function in file.c */
++int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
++	       int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
++			 struct au_pin *pin,
++			 struct dentry *h_parent, void *arg),
++	       void *arg)
++{
++	int err;
++	struct au_pin pin;
++	struct dentry *d, *parent, *h_parent, *real_parent, *h_dentry;
++
++	err = 0;
++	parent = dget_parent(dentry);
++	if (IS_ROOT(parent))
++		goto out;
++
++	au_pin_init(&pin, dentry, bdst, AuLsc_DI_PARENT2, AuLsc_I_PARENT2,
++		    au_opt_udba(dentry->d_sb), AuPin_MNT_WRITE);
++
++	/* do not use au_dpage */
++	real_parent = parent;
++	while (1) {
++		dput(parent);
++		parent = dget_parent(dentry);
++		h_parent = au_h_dptr(parent, bdst);
++		if (h_parent)
++			goto out; /* success */
++
++		/* find top dir which is necessary to cpup */
++		do {
++			d = parent;
++			dput(parent);
++			parent = dget_parent(d);
++			di_read_lock_parent3(parent, !AuLock_IR);
++			h_parent = au_h_dptr(parent, bdst);
++			di_read_unlock(parent, !AuLock_IR);
++		} while (!h_parent);
++
++		if (d != real_parent)
++			di_write_lock_child3(d);
++
++		/* somebody else might create while we were sleeping */
++		h_dentry = au_h_dptr(d, bdst);
++		if (!h_dentry || d_is_negative(h_dentry)) {
++			if (h_dentry)
++				au_update_dbtop(d);
++
++			au_pin_set_dentry(&pin, d);
++			err = au_do_pin(&pin);
++			if (!err) {
++				err = cp(d, bdst, &pin, h_parent, arg);
++				au_unpin(&pin);
++			}
++		}
++
++		if (d != real_parent)
++			di_write_unlock(d);
++		if (unlikely(err))
++			break;
++	}
++
++out:
++	dput(parent);
++	return err;
++}
++
++static int au_cpup_dir(struct dentry *dentry, aufs_bindex_t bdst,
++		       struct au_pin *pin,
++		       struct dentry *h_parent __maybe_unused,
++		       void *arg __maybe_unused)
++{
++	struct au_cp_generic cpg = {
++		.dentry	= dentry,
++		.bdst	= bdst,
++		.bsrc	= -1,
++		.len	= 0,
++		.pin	= pin,
++		.flags	= AuCpup_DTIME
++	};
++	return au_sio_cpup_simple(&cpg);
++}
++
++int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
++{
++	return au_cp_dirs(dentry, bdst, au_cpup_dir, NULL);
++}
++
++int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
++{
++	int err;
++	struct dentry *parent;
++	struct inode *dir;
++
++	parent = dget_parent(dentry);
++	dir = d_inode(parent);
++	err = 0;
++	if (au_h_iptr(dir, bdst))
++		goto out;
++
++	di_read_unlock(parent, AuLock_IR);
++	di_write_lock_parent(parent);
++	/* someone else might change our inode while we were sleeping */
++	if (!au_h_iptr(dir, bdst))
++		err = au_cpup_dirs(dentry, bdst);
++	di_downgrade_lock(parent, AuLock_IR);
++
++out:
++	dput(parent);
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/cpup.h linux-5.4-aufs/fs/aufs/cpup.h
+--- linux-5.4/fs/aufs/cpup.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/cpup.h	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,87 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * copy-up/down functions
++ */
++
++#ifndef __AUFS_CPUP_H__
++#define __AUFS_CPUP_H__
++
++#ifdef __KERNEL__
++
++#include <linux/path.h>
++
++struct inode;
++struct file;
++struct au_pin;
++
++void au_cpup_attr_flags(struct inode *dst, unsigned int iflags);
++void au_cpup_attr_timesizes(struct inode *inode);
++void au_cpup_attr_nlink(struct inode *inode, int force);
++void au_cpup_attr_changeable(struct inode *inode);
++void au_cpup_igen(struct inode *inode, struct inode *h_inode);
++void au_cpup_attr_all(struct inode *inode, int force);
++
++/* ---------------------------------------------------------------------- */
++
++struct au_cp_generic {
++	struct dentry	*dentry;
++	aufs_bindex_t	bdst, bsrc;
++	loff_t		len;
++	struct au_pin	*pin;
++	unsigned int	flags;
++};
++
++/* cpup flags */
++#define AuCpup_DTIME		1		/* do dtime_store/revert */
++#define AuCpup_KEEPLINO		(1 << 1)	/* do not clear the lower xino,
++						   for link(2) */
++#define AuCpup_RENAME		(1 << 2)	/* rename after cpup */
++#define AuCpup_HOPEN		(1 << 3)	/* call h_open_pre/post() in
++						   cpup */
++#define AuCpup_OVERWRITE	(1 << 4)	/* allow overwriting the
++						   existing entry */
++#define AuCpup_RWDST		(1 << 5)	/* force write target even if
++						   the branch is marked as RO */
++
++#ifndef CONFIG_AUFS_BR_HFSPLUS
++#undef AuCpup_HOPEN
++#define AuCpup_HOPEN		0
++#endif
++
++#define au_ftest_cpup(flags, name)	((flags) & AuCpup_##name)
++#define au_fset_cpup(flags, name) \
++	do { (flags) |= AuCpup_##name; } while (0)
++#define au_fclr_cpup(flags, name) \
++	do { (flags) &= ~AuCpup_##name; } while (0)
++
++int au_copy_file(struct file *dst, struct file *src, loff_t len);
++int au_sio_cpup_simple(struct au_cp_generic *cpg);
++int au_sio_cpdown_simple(struct au_cp_generic *cpg);
++int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file);
++
++int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
++	       int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
++			 struct au_pin *pin,
++			 struct dentry *h_parent, void *arg),
++	       void *arg);
++int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
++int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
++
++/* ---------------------------------------------------------------------- */
++
++/* keep timestamps when copyup */
++struct au_dtime {
++	struct dentry *dt_dentry;
++	struct path dt_h_path;
++	struct timespec64 dt_atime, dt_mtime;
++};
++void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
++		    struct path *h_path);
++void au_dtime_revert(struct au_dtime *dt);
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_CPUP_H__ */
+diff -Nurp linux-5.4/fs/aufs/dbgaufs.c linux-5.4-aufs/fs/aufs/dbgaufs.c
+--- linux-5.4/fs/aufs/dbgaufs.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dbgaufs.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,513 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * debugfs interface
++ */
++
++#include <linux/debugfs.h>
++#include "aufs.h"
++
++#ifndef CONFIG_SYSFS
++#error DEBUG_FS depends upon SYSFS
++#endif
++
++static struct dentry *dbgaufs;
++static const mode_t dbgaufs_mode = 0444;
++
++/* 20 is max digits length of ulong 64 */
++struct dbgaufs_arg {
++	int n;
++	char a[20 * 4];
++};
++
++/*
++ * common function for all XINO files
++ */
++static int dbgaufs_xi_release(struct inode *inode __maybe_unused,
++			      struct file *file)
++{
++	void *p;
++
++	p = file->private_data;
++	if (p) {
++		/* this is struct dbgaufs_arg */
++		AuDebugOn(!au_kfree_sz_test(p));
++		au_kfree_do_rcu(p);
++	}
++	return 0;
++}
++
++static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt,
++			   int cnt)
++{
++	int err;
++	struct kstat st;
++	struct dbgaufs_arg *p;
++
++	err = -ENOMEM;
++	p = kmalloc(sizeof(*p), GFP_NOFS);
++	if (unlikely(!p))
++		goto out;
++
++	err = 0;
++	p->n = 0;
++	file->private_data = p;
++	if (!xf)
++		goto out;
++
++	err = vfsub_getattr(&xf->f_path, &st);
++	if (!err) {
++		if (do_fcnt)
++			p->n = snprintf
++				(p->a, sizeof(p->a), "%d, %llux%u %lld\n",
++				 cnt, st.blocks, st.blksize,
++				 (long long)st.size);
++		else
++			p->n = snprintf(p->a, sizeof(p->a), "%llux%u %lld\n",
++					st.blocks, st.blksize,
++					(long long)st.size);
++		AuDebugOn(p->n >= sizeof(p->a));
++	} else {
++		p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err);
++		err = 0;
++	}
++
++out:
++	return err;
++}
++
++static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf,
++			       size_t count, loff_t *ppos)
++{
++	struct dbgaufs_arg *p;
++
++	p = file->private_data;
++	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct dbgaufs_plink_arg {
++	int n;
++	char a[];
++};
++
++static int dbgaufs_plink_release(struct inode *inode __maybe_unused,
++				 struct file *file)
++{
++	free_page((unsigned long)file->private_data);
++	return 0;
++}
++
++static int dbgaufs_plink_open(struct inode *inode, struct file *file)
++{
++	int err, i, limit;
++	unsigned long n, sum;
++	struct dbgaufs_plink_arg *p;
++	struct au_sbinfo *sbinfo;
++	struct super_block *sb;
++	struct hlist_bl_head *hbl;
++
++	err = -ENOMEM;
++	p = (void *)get_zeroed_page(GFP_NOFS);
++	if (unlikely(!p))
++		goto out;
++
++	err = -EFBIG;
++	sbinfo = inode->i_private;
++	sb = sbinfo->si_sb;
++	si_noflush_read_lock(sb);
++	if (au_opt_test(au_mntflags(sb), PLINK)) {
++		limit = PAGE_SIZE - sizeof(p->n);
++
++		/* the number of buckets */
++		n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH);
++		p->n += n;
++		limit -= n;
++
++		sum = 0;
++		for (i = 0, hbl = sbinfo->si_plink; i < AuPlink_NHASH;
++		     i++, hbl++) {
++			n = au_hbl_count(hbl);
++			sum += n;
++
++			n = snprintf(p->a + p->n, limit, "%lu ", n);
++			p->n += n;
++			limit -= n;
++			if (unlikely(limit <= 0))
++				goto out_free;
++		}
++		p->a[p->n - 1] = '\n';
++
++		/* the sum of plinks */
++		n = snprintf(p->a + p->n, limit, "%lu\n", sum);
++		p->n += n;
++		limit -= n;
++		if (unlikely(limit <= 0))
++			goto out_free;
++	} else {
++#define str "1\n0\n0\n"
++		p->n = sizeof(str) - 1;
++		strcpy(p->a, str);
++#undef str
++	}
++	si_read_unlock(sb);
++
++	err = 0;
++	file->private_data = p;
++	goto out; /* success */
++
++out_free:
++	free_page((unsigned long)p);
++out:
++	return err;
++}
++
++static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf,
++				  size_t count, loff_t *ppos)
++{
++	struct dbgaufs_plink_arg *p;
++
++	p = file->private_data;
++	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
++}
++
++static const struct file_operations dbgaufs_plink_fop = {
++	.owner		= THIS_MODULE,
++	.open		= dbgaufs_plink_open,
++	.release	= dbgaufs_plink_release,
++	.read		= dbgaufs_plink_read
++};
++
++/* ---------------------------------------------------------------------- */
++
++static int dbgaufs_xib_open(struct inode *inode, struct file *file)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++	struct super_block *sb;
++
++	sbinfo = inode->i_private;
++	sb = sbinfo->si_sb;
++	si_noflush_read_lock(sb);
++	err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0, /*cnt*/0);
++	si_read_unlock(sb);
++	return err;
++}
++
++static const struct file_operations dbgaufs_xib_fop = {
++	.owner		= THIS_MODULE,
++	.open		= dbgaufs_xib_open,
++	.release	= dbgaufs_xi_release,
++	.read		= dbgaufs_xi_read
++};
++
++/* ---------------------------------------------------------------------- */
++
++#define DbgaufsXi_PREFIX "xi"
++
++static int dbgaufs_xino_open(struct inode *inode, struct file *file)
++{
++	int err, idx;
++	long l;
++	aufs_bindex_t bindex;
++	char *p, a[sizeof(DbgaufsXi_PREFIX) + 8];
++	struct au_sbinfo *sbinfo;
++	struct super_block *sb;
++	struct au_xino *xi;
++	struct file *xf;
++	struct qstr *name;
++	struct au_branch *br;
++
++	err = -ENOENT;
++	name = &file->f_path.dentry->d_name;
++	if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX)
++		     || memcmp(name->name, DbgaufsXi_PREFIX,
++			       sizeof(DbgaufsXi_PREFIX) - 1)))
++		goto out;
++
++	AuDebugOn(name->len >= sizeof(a));
++	memcpy(a, name->name, name->len);
++	a[name->len] = '\0';
++	p = strchr(a, '-');
++	if (p)
++		*p = '\0';
++	err = kstrtol(a + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l);
++	if (unlikely(err))
++		goto out;
++	bindex = l;
++	idx = 0;
++	if (p) {
++		err = kstrtol(p + 1, 10, &l);
++		if (unlikely(err))
++			goto out;
++		idx = l;
++	}
++
++	err = -ENOENT;
++	sbinfo = inode->i_private;
++	sb = sbinfo->si_sb;
++	si_noflush_read_lock(sb);
++	if (unlikely(bindex < 0 || bindex > au_sbbot(sb)))
++		goto out_si;
++	br = au_sbr(sb, bindex);
++	xi = br->br_xino;
++	if (unlikely(idx >= xi->xi_nfile))
++		goto out_si;
++	xf = au_xino_file(xi, idx);
++	if (xf)
++		err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1,
++				      au_xino_count(br));
++
++out_si:
++	si_read_unlock(sb);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static const struct file_operations dbgaufs_xino_fop = {
++	.owner		= THIS_MODULE,
++	.open		= dbgaufs_xino_open,
++	.release	= dbgaufs_xi_release,
++	.read		= dbgaufs_xi_read
++};
++
++void dbgaufs_xino_del(struct au_branch *br)
++{
++	struct dentry *dbgaufs;
++
++	dbgaufs = br->br_dbgaufs;
++	if (!dbgaufs)
++		return;
++
++	br->br_dbgaufs = NULL;
++	/* debugfs acquires the parent i_mutex */
++	lockdep_off();
++	debugfs_remove(dbgaufs);
++	lockdep_on();
++}
++
++void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
++{
++	aufs_bindex_t bbot;
++	struct au_branch *br;
++
++	if (!au_sbi(sb)->si_dbgaufs)
++		return;
++
++	bbot = au_sbbot(sb);
++	for (; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		dbgaufs_xino_del(br);
++	}
++}
++
++static void dbgaufs_br_do_add(struct super_block *sb, aufs_bindex_t bindex,
++			      unsigned int idx, struct dentry *parent,
++			      struct au_sbinfo *sbinfo)
++{
++	struct au_branch *br;
++	struct dentry *d;
++	/* "xi" bindex(5) "-" idx(2) NULL */
++	char name[sizeof(DbgaufsXi_PREFIX) + 8];
++
++	if (!idx)
++		snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex);
++	else
++		snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d-%u",
++			 bindex, idx);
++	br = au_sbr(sb, bindex);
++	if (br->br_dbgaufs) {
++		struct qstr qstr = QSTR_INIT(name, strlen(name));
++
++		if (!au_qstreq(&br->br_dbgaufs->d_name, &qstr)) {
++			/* debugfs acquires the parent i_mutex */
++			lockdep_off();
++			d = debugfs_rename(parent, br->br_dbgaufs, parent,
++					   name);
++			lockdep_on();
++			if (unlikely(!d))
++				pr_warn("failed renaming %pd/%s, ignored.\n",
++					parent, name);
++		}
++	} else {
++		lockdep_off();
++		br->br_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent,
++						     sbinfo, &dbgaufs_xino_fop);
++		lockdep_on();
++		if (unlikely(!br->br_dbgaufs))
++			pr_warn("failed creating %pd/%s, ignored.\n",
++				parent, name);
++	}
++}
++
++static void dbgaufs_br_add(struct super_block *sb, aufs_bindex_t bindex,
++			   struct dentry *parent, struct au_sbinfo *sbinfo)
++{
++	struct au_branch *br;
++	struct au_xino *xi;
++	unsigned int u;
++
++	br = au_sbr(sb, bindex);
++	xi = br->br_xino;
++	for (u = 0; u < xi->xi_nfile; u++)
++		dbgaufs_br_do_add(sb, bindex, u, parent, sbinfo);
++}
++
++void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown)
++{
++	struct au_sbinfo *sbinfo;
++	struct dentry *parent;
++	aufs_bindex_t bbot;
++
++	if (!au_opt_test(au_mntflags(sb), XINO))
++		return;
++
++	sbinfo = au_sbi(sb);
++	parent = sbinfo->si_dbgaufs;
++	if (!parent)
++		return;
++
++	bbot = au_sbbot(sb);
++	if (topdown)
++		for (; bindex <= bbot; bindex++)
++			dbgaufs_br_add(sb, bindex, parent, sbinfo);
++	else
++		for (; bbot >= bindex; bbot--)
++			dbgaufs_br_add(sb, bbot, parent, sbinfo);
++}
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_EXPORT
++static int dbgaufs_xigen_open(struct inode *inode, struct file *file)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++	struct super_block *sb;
++
++	sbinfo = inode->i_private;
++	sb = sbinfo->si_sb;
++	si_noflush_read_lock(sb);
++	err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0, /*cnt*/0);
++	si_read_unlock(sb);
++	return err;
++}
++
++static const struct file_operations dbgaufs_xigen_fop = {
++	.owner		= THIS_MODULE,
++	.open		= dbgaufs_xigen_open,
++	.release	= dbgaufs_xi_release,
++	.read		= dbgaufs_xi_read
++};
++
++static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
++{
++	int err;
++
++	/*
++	 * This function is a dynamic '__init' function actually,
++	 * so the tiny check for si_rwsem is unnecessary.
++	 */
++	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
++
++	err = -EIO;
++	sbinfo->si_dbgaufs_xigen = debugfs_create_file
++		("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
++		 &dbgaufs_xigen_fop);
++	if (sbinfo->si_dbgaufs_xigen)
++		err = 0;
++
++	return err;
++}
++#else
++static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
++{
++	return 0;
++}
++#endif /* CONFIG_AUFS_EXPORT */
++
++/* ---------------------------------------------------------------------- */
++
++void dbgaufs_si_fin(struct au_sbinfo *sbinfo)
++{
++	/*
++	 * This function is a dynamic '__fin' function actually,
++	 * so the tiny check for si_rwsem is unnecessary.
++	 */
++	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
++
++	debugfs_remove_recursive(sbinfo->si_dbgaufs);
++	sbinfo->si_dbgaufs = NULL;
++}
++
++int dbgaufs_si_init(struct au_sbinfo *sbinfo)
++{
++	int err;
++	char name[SysaufsSiNameLen];
++
++	/*
++	 * This function is a dynamic '__init' function actually,
++	 * so the tiny check for si_rwsem is unnecessary.
++	 */
++	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
++
++	err = -ENOENT;
++	if (!dbgaufs) {
++		AuErr1("/debug/aufs is uninitialized\n");
++		goto out;
++	}
++
++	err = -EIO;
++	sysaufs_name(sbinfo, name);
++	sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs);
++	if (unlikely(!sbinfo->si_dbgaufs))
++		goto out;
++
++	/* regardless plink/noplink option */
++	sbinfo->si_dbgaufs_plink = debugfs_create_file
++		("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
++		 &dbgaufs_plink_fop);
++	if (unlikely(!sbinfo->si_dbgaufs_plink))
++		goto out_dir;
++
++	/* regardless xino/noxino option */
++	sbinfo->si_dbgaufs_xib = debugfs_create_file
++		("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
++		 &dbgaufs_xib_fop);
++	if (unlikely(!sbinfo->si_dbgaufs_xib))
++		goto out_dir;
++
++	err = dbgaufs_xigen_init(sbinfo);
++	if (!err)
++		goto out; /* success */
++
++out_dir:
++	dbgaufs_si_fin(sbinfo);
++out:
++	if (unlikely(err))
++		pr_err("debugfs/aufs failed\n");
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void dbgaufs_fin(void)
++{
++	debugfs_remove(dbgaufs);
++}
++
++int __init dbgaufs_init(void)
++{
++	int err;
++
++	err = -EIO;
++	dbgaufs = debugfs_create_dir(AUFS_NAME, NULL);
++	if (dbgaufs)
++		err = 0;
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/dbgaufs.h linux-5.4-aufs/fs/aufs/dbgaufs.h
+--- linux-5.4/fs/aufs/dbgaufs.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dbgaufs.h	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,40 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * debugfs interface
++ */
++
++#ifndef __DBGAUFS_H__
++#define __DBGAUFS_H__
++
++#ifdef __KERNEL__
++
++struct super_block;
++struct au_sbinfo;
++struct au_branch;
++
++#ifdef CONFIG_DEBUG_FS
++/* dbgaufs.c */
++void dbgaufs_xino_del(struct au_branch *br);
++void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
++void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown);
++void dbgaufs_si_fin(struct au_sbinfo *sbinfo);
++int dbgaufs_si_init(struct au_sbinfo *sbinfo);
++void dbgaufs_fin(void);
++int __init dbgaufs_init(void);
++#else
++AuStubVoid(dbgaufs_xino_del, struct au_branch *br)
++AuStubVoid(dbgaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
++AuStubVoid(dbgaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex,
++	   int topdown)
++AuStubVoid(dbgaufs_si_fin, struct au_sbinfo *sbinfo)
++AuStubInt0(dbgaufs_si_init, struct au_sbinfo *sbinfo)
++AuStubVoid(dbgaufs_fin, void)
++AuStubInt0(__init dbgaufs_init, void)
++#endif /* CONFIG_DEBUG_FS */
++
++#endif /* __KERNEL__ */
++#endif /* __DBGAUFS_H__ */
+diff -Nurp linux-5.4/fs/aufs/dcsub.c linux-5.4-aufs/fs/aufs/dcsub.c
+--- linux-5.4/fs/aufs/dcsub.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dcsub.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,212 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sub-routines for dentry cache
++ */
++
++#include "aufs.h"
++
++static void au_dpage_free(struct au_dpage *dpage)
++{
++	int i;
++	struct dentry **p;
++
++	p = dpage->dentries;
++	for (i = 0; i < dpage->ndentry; i++)
++		dput(*p++);
++	free_page((unsigned long)dpage->dentries);
++}
++
++int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp)
++{
++	int err;
++	void *p;
++
++	err = -ENOMEM;
++	dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp);
++	if (unlikely(!dpages->dpages))
++		goto out;
++
++	p = (void *)__get_free_page(gfp);
++	if (unlikely(!p))
++		goto out_dpages;
++
++	dpages->dpages[0].ndentry = 0;
++	dpages->dpages[0].dentries = p;
++	dpages->ndpage = 1;
++	return 0; /* success */
++
++out_dpages:
++	au_kfree_try_rcu(dpages->dpages);
++out:
++	return err;
++}
++
++void au_dpages_free(struct au_dcsub_pages *dpages)
++{
++	int i;
++	struct au_dpage *p;
++
++	p = dpages->dpages;
++	for (i = 0; i < dpages->ndpage; i++)
++		au_dpage_free(p++);
++	au_kfree_try_rcu(dpages->dpages);
++}
++
++static int au_dpages_append(struct au_dcsub_pages *dpages,
++			    struct dentry *dentry, gfp_t gfp)
++{
++	int err, sz;
++	struct au_dpage *dpage;
++	void *p;
++
++	dpage = dpages->dpages + dpages->ndpage - 1;
++	sz = PAGE_SIZE / sizeof(dentry);
++	if (unlikely(dpage->ndentry >= sz)) {
++		AuLabel(new dpage);
++		err = -ENOMEM;
++		sz = dpages->ndpage * sizeof(*dpages->dpages);
++		p = au_kzrealloc(dpages->dpages, sz,
++				 sz + sizeof(*dpages->dpages), gfp,
++				 /*may_shrink*/0);
++		if (unlikely(!p))
++			goto out;
++
++		dpages->dpages = p;
++		dpage = dpages->dpages + dpages->ndpage;
++		p = (void *)__get_free_page(gfp);
++		if (unlikely(!p))
++			goto out;
++
++		dpage->ndentry = 0;
++		dpage->dentries = p;
++		dpages->ndpage++;
++	}
++
++	AuDebugOn(au_dcount(dentry) <= 0);
++	dpage->dentries[dpage->ndentry++] = dget_dlock(dentry);
++	return 0; /* success */
++
++out:
++	return err;
++}
++
++/* todo: BAD approach */
++/* copied from linux/fs/dcache.c */
++enum d_walk_ret {
++	D_WALK_CONTINUE,
++	D_WALK_QUIT,
++	D_WALK_NORETRY,
++	D_WALK_SKIP,
++};
++
++extern void d_walk(struct dentry *parent, void *data,
++		   enum d_walk_ret (*enter)(void *, struct dentry *));
++
++struct ac_dpages_arg {
++	int err;
++	struct au_dcsub_pages *dpages;
++	struct super_block *sb;
++	au_dpages_test test;
++	void *arg;
++};
++
++static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry)
++{
++	enum d_walk_ret ret;
++	struct ac_dpages_arg *arg = _arg;
++
++	ret = D_WALK_CONTINUE;
++	if (dentry->d_sb == arg->sb
++	    && !IS_ROOT(dentry)
++	    && au_dcount(dentry) > 0
++	    && au_di(dentry)
++	    && (!arg->test || arg->test(dentry, arg->arg))) {
++		arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC);
++		if (unlikely(arg->err))
++			ret = D_WALK_QUIT;
++	}
++
++	return ret;
++}
++
++int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
++		   au_dpages_test test, void *arg)
++{
++	struct ac_dpages_arg args = {
++		.err	= 0,
++		.dpages	= dpages,
++		.sb	= root->d_sb,
++		.test	= test,
++		.arg	= arg
++	};
++
++	d_walk(root, &args, au_call_dpages_append);
++
++	return args.err;
++}
++
++int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
++		       int do_include, au_dpages_test test, void *arg)
++{
++	int err;
++
++	err = 0;
++	write_seqlock(&rename_lock);
++	spin_lock(&dentry->d_lock);
++	if (do_include
++	    && au_dcount(dentry) > 0
++	    && (!test || test(dentry, arg)))
++		err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
++	spin_unlock(&dentry->d_lock);
++	if (unlikely(err))
++		goto out;
++
++	/*
++	 * RCU for vfsmount is unnecessary since this is a traverse in a single
++	 * mount
++	 */
++	while (!IS_ROOT(dentry)) {
++		dentry = dentry->d_parent; /* rename_lock is locked */
++		spin_lock(&dentry->d_lock);
++		if (au_dcount(dentry) > 0
++		    && (!test || test(dentry, arg)))
++			err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
++		spin_unlock(&dentry->d_lock);
++		if (unlikely(err))
++			break;
++	}
++
++out:
++	write_sequnlock(&rename_lock);
++	return err;
++}
++
++static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg)
++{
++	return au_di(dentry) && dentry->d_sb == arg;
++}
++
++int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
++			    struct dentry *dentry, int do_include)
++{
++	return au_dcsub_pages_rev(dpages, dentry, do_include,
++				  au_dcsub_dpages_aufs, dentry->d_sb);
++}
++
++int au_test_subdir(struct dentry *d1, struct dentry *d2)
++{
++	struct path path[2] = {
++		{
++			.dentry = d1
++		},
++		{
++			.dentry = d2
++		}
++	};
++
++	return path_is_under(path + 0, path + 1);
++}
+diff -Nurp linux-5.4/fs/aufs/dcsub.h linux-5.4-aufs/fs/aufs/dcsub.h
+--- linux-5.4/fs/aufs/dcsub.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dcsub.h	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,124 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sub-routines for dentry cache
++ */
++
++#ifndef __AUFS_DCSUB_H__
++#define __AUFS_DCSUB_H__
++
++#ifdef __KERNEL__
++
++#include <linux/dcache.h>
++#include <linux/fs.h>
++
++struct au_dpage {
++	int ndentry;
++	struct dentry **dentries;
++};
++
++struct au_dcsub_pages {
++	int ndpage;
++	struct au_dpage *dpages;
++};
++
++/* ---------------------------------------------------------------------- */
++
++/* dcsub.c */
++int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp);
++void au_dpages_free(struct au_dcsub_pages *dpages);
++typedef int (*au_dpages_test)(struct dentry *dentry, void *arg);
++int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
++		   au_dpages_test test, void *arg);
++int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
++		       int do_include, au_dpages_test test, void *arg);
++int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
++			    struct dentry *dentry, int do_include);
++int au_test_subdir(struct dentry *d1, struct dentry *d2);
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * todo: in linux-3.13, several similar (but faster) helpers are added to
++ * include/linux/dcache.h. Try them (in the future).
++ */
++
++static inline int au_d_hashed_positive(struct dentry *d)
++{
++	int err;
++	struct inode *inode = d_inode(d);
++
++	err = 0;
++	if (unlikely(d_unhashed(d)
++		     || d_is_negative(d)
++		     || !inode->i_nlink))
++		err = -ENOENT;
++	return err;
++}
++
++static inline int au_d_linkable(struct dentry *d)
++{
++	int err;
++	struct inode *inode = d_inode(d);
++
++	err = au_d_hashed_positive(d);
++	if (err
++	    && d_is_positive(d)
++	    && (inode->i_state & I_LINKABLE))
++		err = 0;
++	return err;
++}
++
++static inline int au_d_alive(struct dentry *d)
++{
++	int err;
++	struct inode *inode;
++
++	err = 0;
++	if (!IS_ROOT(d))
++		err = au_d_hashed_positive(d);
++	else {
++		inode = d_inode(d);
++		if (unlikely(d_unlinked(d)
++			     || d_is_negative(d)
++			     || !inode->i_nlink))
++			err = -ENOENT;
++	}
++	return err;
++}
++
++static inline int au_alive_dir(struct dentry *d)
++{
++	int err;
++
++	err = au_d_alive(d);
++	if (unlikely(err || IS_DEADDIR(d_inode(d))))
++		err = -ENOENT;
++	return err;
++}
++
++static inline int au_qstreq(struct qstr *a, struct qstr *b)
++{
++	return a->len == b->len
++		&& !memcmp(a->name, b->name, a->len);
++}
++
++/*
++ * by the commit
++ * 360f547 2015-01-25 dcache: let the dentry count go down to zero without
++ *			taking d_lock
++ * the type of d_lockref.count became int, but the inlined function d_count()
++ * still returns unsigned int.
++ * I don't know why. Maybe it is for every d_count() users?
++ * Anyway au_dcount() lives on.
++ */
++static inline int au_dcount(struct dentry *d)
++{
++	return (int)d_count(d);
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DCSUB_H__ */
+diff -Nurp linux-5.4/fs/aufs/debug.c linux-5.4-aufs/fs/aufs/debug.c
+--- linux-5.4/fs/aufs/debug.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/debug.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,428 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * debug print functions
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++/* Returns 0, or -errno.  arg is in kp->arg. */
++static int param_atomic_t_set(const char *val, const struct kernel_param *kp)
++{
++	int err, n;
++
++	err = kstrtoint(val, 0, &n);
++	if (!err) {
++		if (n > 0)
++			au_debug_on();
++		else
++			au_debug_off();
++	}
++	return err;
++}
++
++/* Returns length written or -errno.  Buffer is 4k (ie. be short!) */
++static int param_atomic_t_get(char *buffer, const struct kernel_param *kp)
++{
++	atomic_t *a;
++
++	a = kp->arg;
++	return sprintf(buffer, "%d", atomic_read(a));
++}
++
++static struct kernel_param_ops param_ops_atomic_t = {
++	.set = param_atomic_t_set,
++	.get = param_atomic_t_get
++	/* void (*free)(void *arg) */
++};
++
++atomic_t aufs_debug = ATOMIC_INIT(0);
++MODULE_PARM_DESC(debug, "debug print");
++module_param_named(debug, aufs_debug, atomic_t, 0664);
++
++DEFINE_MUTEX(au_dbg_mtx);	/* just to serialize the dbg msgs */
++char *au_plevel = KERN_DEBUG;
++#define dpri(fmt, ...) do {					\
++	if ((au_plevel						\
++	     && strcmp(au_plevel, KERN_DEBUG))			\
++	    || au_debug_test())					\
++		printk("%s" fmt, au_plevel, ##__VA_ARGS__);	\
++} while (0)
++
++/* ---------------------------------------------------------------------- */
++
++void au_dpri_whlist(struct au_nhash *whlist)
++{
++	unsigned long ul, n;
++	struct hlist_head *head;
++	struct au_vdir_wh *pos;
++
++	n = whlist->nh_num;
++	head = whlist->nh_head;
++	for (ul = 0; ul < n; ul++) {
++		hlist_for_each_entry(pos, head, wh_hash)
++			dpri("b%d, %.*s, %d\n",
++			     pos->wh_bindex,
++			     pos->wh_str.len, pos->wh_str.name,
++			     pos->wh_str.len);
++		head++;
++	}
++}
++
++void au_dpri_vdir(struct au_vdir *vdir)
++{
++	unsigned long ul;
++	union au_vdir_deblk_p p;
++	unsigned char *o;
++
++	if (!vdir || IS_ERR(vdir)) {
++		dpri("err %ld\n", PTR_ERR(vdir));
++		return;
++	}
++
++	dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %llu\n",
++	     vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk,
++	     vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version);
++	for (ul = 0; ul < vdir->vd_nblk; ul++) {
++		p.deblk = vdir->vd_deblk[ul];
++		o = p.deblk;
++		dpri("[%lu]: %p\n", ul, o);
++	}
++}
++
++static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn,
++			struct dentry *wh)
++{
++	char *n = NULL;
++	int l = 0;
++
++	if (!inode || IS_ERR(inode)) {
++		dpri("i%d: err %ld\n", bindex, PTR_ERR(inode));
++		return -1;
++	}
++
++	/* the type of i_blocks depends upon CONFIG_LBDAF */
++	BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long)
++		     && sizeof(inode->i_blocks) != sizeof(u64));
++	if (wh) {
++		n = (void *)wh->d_name.name;
++		l = wh->d_name.len;
++	}
++
++	dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu,"
++	     " hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n",
++	     bindex, inode,
++	     inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??",
++	     atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode,
++	     i_size_read(inode), (unsigned long long)inode->i_blocks,
++	     hn, (long long)timespec64_to_ns(&inode->i_ctime) & 0x0ffff,
++	     inode->i_mapping ? inode->i_mapping->nrpages : 0,
++	     inode->i_state, inode->i_flags, inode_peek_iversion(inode),
++	     inode->i_generation,
++	     l ? ", wh " : "", l, n);
++	return 0;
++}
++
++void au_dpri_inode(struct inode *inode)
++{
++	struct au_iinfo *iinfo;
++	struct au_hinode *hi;
++	aufs_bindex_t bindex;
++	int err, hn;
++
++	err = do_pri_inode(-1, inode, -1, NULL);
++	if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode))
++		return;
++
++	iinfo = au_ii(inode);
++	dpri("i-1: btop %d, bbot %d, gen %d\n",
++	     iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL));
++	if (iinfo->ii_btop < 0)
++		return;
++	hn = 0;
++	for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) {
++		hi = au_hinode(iinfo, bindex);
++		hn = !!au_hn(hi);
++		do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry);
++	}
++}
++
++void au_dpri_dalias(struct inode *inode)
++{
++	struct dentry *d;
++
++	spin_lock(&inode->i_lock);
++	hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias)
++		au_dpri_dentry(d);
++	spin_unlock(&inode->i_lock);
++}
++
++static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry)
++{
++	struct dentry *wh = NULL;
++	int hn;
++	struct inode *inode;
++	struct au_iinfo *iinfo;
++	struct au_hinode *hi;
++
++	if (!dentry || IS_ERR(dentry)) {
++		dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
++		return -1;
++	}
++	/* do not call dget_parent() here */
++	/* note: access d_xxx without d_lock */
++	dpri("d%d: %p, %pd2?, %s, cnt %d, flags 0x%x, %shashed\n",
++	     bindex, dentry, dentry,
++	     dentry->d_sb ? au_sbtype(dentry->d_sb) : "??",
++	     au_dcount(dentry), dentry->d_flags,
++	     d_unhashed(dentry) ? "un" : "");
++	hn = -1;
++	inode = NULL;
++	if (d_is_positive(dentry))
++		inode = d_inode(dentry);
++	if (inode
++	    && au_test_aufs(dentry->d_sb)
++	    && bindex >= 0
++	    && !au_is_bad_inode(inode)) {
++		iinfo = au_ii(inode);
++		hi = au_hinode(iinfo, bindex);
++		hn = !!au_hn(hi);
++		wh = hi->hi_whdentry;
++	}
++	do_pri_inode(bindex, inode, hn, wh);
++	return 0;
++}
++
++void au_dpri_dentry(struct dentry *dentry)
++{
++	struct au_dinfo *dinfo;
++	aufs_bindex_t bindex;
++	int err;
++
++	err = do_pri_dentry(-1, dentry);
++	if (err || !au_test_aufs(dentry->d_sb))
++		return;
++
++	dinfo = au_di(dentry);
++	if (!dinfo)
++		return;
++	dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n",
++	     dinfo->di_btop, dinfo->di_bbot,
++	     dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry),
++	     dinfo->di_tmpfile);
++	if (dinfo->di_btop < 0)
++		return;
++	for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++)
++		do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry);
++}
++
++static int do_pri_file(aufs_bindex_t bindex, struct file *file)
++{
++	char a[32];
++
++	if (!file || IS_ERR(file)) {
++		dpri("f%d: err %ld\n", bindex, PTR_ERR(file));
++		return -1;
++	}
++	a[0] = 0;
++	if (bindex < 0
++	    && !IS_ERR_OR_NULL(file->f_path.dentry)
++	    && au_test_aufs(file->f_path.dentry->d_sb)
++	    && au_fi(file))
++		snprintf(a, sizeof(a), ", gen %d, mmapped %d",
++			 au_figen(file), atomic_read(&au_fi(file)->fi_mmapped));
++	dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n",
++	     bindex, file->f_mode, file->f_flags, (long)file_count(file),
++	     file->f_version, file->f_pos, a);
++	if (!IS_ERR_OR_NULL(file->f_path.dentry))
++		do_pri_dentry(bindex, file->f_path.dentry);
++	return 0;
++}
++
++void au_dpri_file(struct file *file)
++{
++	struct au_finfo *finfo;
++	struct au_fidir *fidir;
++	struct au_hfile *hfile;
++	aufs_bindex_t bindex;
++	int err;
++
++	err = do_pri_file(-1, file);
++	if (err
++	    || IS_ERR_OR_NULL(file->f_path.dentry)
++	    || !au_test_aufs(file->f_path.dentry->d_sb))
++		return;
++
++	finfo = au_fi(file);
++	if (!finfo)
++		return;
++	if (finfo->fi_btop < 0)
++		return;
++	fidir = finfo->fi_hdir;
++	if (!fidir)
++		do_pri_file(finfo->fi_btop, finfo->fi_htop.hf_file);
++	else
++		for (bindex = finfo->fi_btop;
++		     bindex >= 0 && bindex <= fidir->fd_bbot;
++		     bindex++) {
++			hfile = fidir->fd_hfile + bindex;
++			do_pri_file(bindex, hfile ? hfile->hf_file : NULL);
++		}
++}
++
++static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br)
++{
++	struct vfsmount *mnt;
++	struct super_block *sb;
++
++	if (!br || IS_ERR(br))
++		goto out;
++	mnt = au_br_mnt(br);
++	if (!mnt || IS_ERR(mnt))
++		goto out;
++	sb = mnt->mnt_sb;
++	if (!sb || IS_ERR(sb))
++		goto out;
++
++	dpri("s%d: {perm 0x%x, id %d, wbr %p}, "
++	     "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, "
++	     "xino %d\n",
++	     bindex, br->br_perm, br->br_id, br->br_wbr,
++	     au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev),
++	     sb->s_flags, sb->s_count,
++	     atomic_read(&sb->s_active),
++	     !!au_xino_file(br->br_xino, /*idx*/-1));
++	return 0;
++
++out:
++	dpri("s%d: err %ld\n", bindex, PTR_ERR(br));
++	return -1;
++}
++
++void au_dpri_sb(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++	aufs_bindex_t bindex;
++	int err;
++	/* to reduce stack size */
++	struct {
++		struct vfsmount mnt;
++		struct au_branch fake;
++	} *a;
++
++	/* this function can be called from magic sysrq */
++	a = kzalloc(sizeof(*a), GFP_ATOMIC);
++	if (unlikely(!a)) {
++		dpri("no memory\n");
++		return;
++	}
++
++	a->mnt.mnt_sb = sb;
++	a->fake.br_path.mnt = &a->mnt;
++	err = do_pri_br(-1, &a->fake);
++	au_kfree_rcu(a);
++	dpri("dev 0x%x\n", sb->s_dev);
++	if (err || !au_test_aufs(sb))
++		return;
++
++	sbinfo = au_sbi(sb);
++	if (!sbinfo)
++		return;
++	dpri("nw %d, gen %u, kobj %d\n",
++	     atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation,
++	     kref_read(&sbinfo->si_kobj.kref));
++	for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++)
++		do_pri_br(bindex, sbinfo->si_branch[0 + bindex]);
++}
++
++/* ---------------------------------------------------------------------- */
++
++void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line)
++{
++	struct inode *h_inode, *inode = d_inode(dentry);
++	struct dentry *h_dentry;
++	aufs_bindex_t bindex, bbot, bi;
++
++	if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */)
++		return;
++
++	bbot = au_dbbot(dentry);
++	bi = au_ibbot(inode);
++	if (bi < bbot)
++		bbot = bi;
++	bindex = au_dbtop(dentry);
++	bi = au_ibtop(inode);
++	if (bi > bindex)
++		bindex = bi;
++
++	for (; bindex <= bbot; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++		h_inode = au_h_iptr(inode, bindex);
++		if (unlikely(h_inode != d_inode(h_dentry))) {
++			au_debug_on();
++			AuDbg("b%d, %s:%d\n", bindex, func, line);
++			AuDbgDentry(dentry);
++			AuDbgInode(inode);
++			au_debug_off();
++			BUG();
++		}
++	}
++}
++
++void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen)
++{
++	int err, i, j;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry **dentries;
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	AuDebugOn(err);
++	err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/1);
++	AuDebugOn(err);
++	for (i = dpages.ndpage - 1; !err && i >= 0; i--) {
++		dpage = dpages.dpages + i;
++		dentries = dpage->dentries;
++		for (j = dpage->ndentry - 1; !err && j >= 0; j--)
++			AuDebugOn(au_digen_test(dentries[j], sigen));
++	}
++	au_dpages_free(&dpages);
++}
++
++void au_dbg_verify_kthread(void)
++{
++	if (au_wkq_test()) {
++		au_dbg_blocked();
++		/*
++		 * It may be recursive, but udba=notify between two aufs mounts,
++		 * where a single ro branch is shared, is not a problem.
++		 */
++		/* WARN_ON(1); */
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++int __init au_debug_init(void)
++{
++	aufs_bindex_t bindex;
++	struct au_vdir_destr destr;
++
++	bindex = -1;
++	AuDebugOn(bindex >= 0);
++
++	destr.len = -1;
++	AuDebugOn(destr.len < NAME_MAX);
++
++#ifdef CONFIG_4KSTACKS
++	pr_warn("CONFIG_4KSTACKS is defined.\n");
++#endif
++
++	return 0;
++}
+diff -Nurp linux-5.4/fs/aufs/debug.h linux-5.4-aufs/fs/aufs/debug.h
+--- linux-5.4/fs/aufs/debug.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/debug.h	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,213 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * debug print functions
++ */
++
++#ifndef __AUFS_DEBUG_H__
++#define __AUFS_DEBUG_H__
++
++#ifdef __KERNEL__
++
++#include <linux/atomic.h>
++#include <linux/module.h>
++#include <linux/kallsyms.h>
++#include <linux/sysrq.h>
++
++#ifdef CONFIG_AUFS_DEBUG
++#define AuDebugOn(a)		BUG_ON(a)
++
++/* module parameter */
++extern atomic_t aufs_debug;
++static inline void au_debug_on(void)
++{
++	atomic_inc(&aufs_debug);
++}
++static inline void au_debug_off(void)
++{
++	atomic_dec_if_positive(&aufs_debug);
++}
++
++static inline int au_debug_test(void)
++{
++	return atomic_read(&aufs_debug) > 0;
++}
++#else
++#define AuDebugOn(a)		do {} while (0)
++AuStubVoid(au_debug_on, void)
++AuStubVoid(au_debug_off, void)
++AuStubInt0(au_debug_test, void)
++#endif /* CONFIG_AUFS_DEBUG */
++
++#define param_check_atomic_t(name, p) __param_check(name, p, atomic_t)
++
++/* ---------------------------------------------------------------------- */
++
++/* debug print */
++
++#define AuDbg(fmt, ...) do { \
++	if (au_debug_test()) \
++		pr_debug("DEBUG: " fmt, ##__VA_ARGS__); \
++} while (0)
++#define AuLabel(l)		AuDbg(#l "\n")
++#define AuIOErr(fmt, ...)	pr_err("I/O Error, " fmt, ##__VA_ARGS__)
++#define AuWarn1(fmt, ...) do { \
++	static unsigned char _c; \
++	if (!_c++) \
++		pr_warn(fmt, ##__VA_ARGS__); \
++} while (0)
++
++#define AuErr1(fmt, ...) do { \
++	static unsigned char _c; \
++	if (!_c++) \
++		pr_err(fmt, ##__VA_ARGS__); \
++} while (0)
++
++#define AuIOErr1(fmt, ...) do { \
++	static unsigned char _c; \
++	if (!_c++) \
++		AuIOErr(fmt, ##__VA_ARGS__); \
++} while (0)
++
++#define AuUnsupportMsg	"This operation is not supported." \
++			" Please report this application to aufs-users ML."
++#define AuUnsupport(fmt, ...) do { \
++	pr_err(AuUnsupportMsg "\n" fmt, ##__VA_ARGS__); \
++	dump_stack(); \
++} while (0)
++
++#define AuTraceErr(e) do { \
++	if (unlikely((e) < 0)) \
++		AuDbg("err %d\n", (int)(e)); \
++} while (0)
++
++#define AuTraceErrPtr(p) do { \
++	if (IS_ERR(p)) \
++		AuDbg("err %ld\n", PTR_ERR(p)); \
++} while (0)
++
++/* dirty macros for debug print, use with "%.*s" and caution */
++#define AuLNPair(qstr)		(qstr)->len, (qstr)->name
++
++/* ---------------------------------------------------------------------- */
++
++struct dentry;
++#ifdef CONFIG_AUFS_DEBUG
++extern struct mutex au_dbg_mtx;
++extern char *au_plevel;
++struct au_nhash;
++void au_dpri_whlist(struct au_nhash *whlist);
++struct au_vdir;
++void au_dpri_vdir(struct au_vdir *vdir);
++struct inode;
++void au_dpri_inode(struct inode *inode);
++void au_dpri_dalias(struct inode *inode);
++void au_dpri_dentry(struct dentry *dentry);
++struct file;
++void au_dpri_file(struct file *filp);
++struct super_block;
++void au_dpri_sb(struct super_block *sb);
++
++#define au_dbg_verify_dinode(d) __au_dbg_verify_dinode(d, __func__, __LINE__)
++void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line);
++void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen);
++void au_dbg_verify_kthread(void);
++
++int __init au_debug_init(void);
++
++#define AuDbgWhlist(w) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#w "\n"); \
++	au_dpri_whlist(w); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgVdir(v) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#v "\n"); \
++	au_dpri_vdir(v); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgInode(i) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#i "\n"); \
++	au_dpri_inode(i); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgDAlias(i) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#i "\n"); \
++	au_dpri_dalias(i); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgDentry(d) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#d "\n"); \
++	au_dpri_dentry(d); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgFile(f) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#f "\n"); \
++	au_dpri_file(f); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgSb(sb) do { \
++	mutex_lock(&au_dbg_mtx); \
++	AuDbg(#sb "\n"); \
++	au_dpri_sb(sb); \
++	mutex_unlock(&au_dbg_mtx); \
++} while (0)
++
++#define AuDbgSym(addr) do {				\
++	char sym[KSYM_SYMBOL_LEN];			\
++	sprint_symbol(sym, (unsigned long)addr);	\
++	AuDbg("%s\n", sym);				\
++} while (0)
++#else
++AuStubVoid(au_dbg_verify_dinode, struct dentry *dentry)
++AuStubVoid(au_dbg_verify_gen, struct dentry *parent, unsigned int sigen)
++AuStubVoid(au_dbg_verify_kthread, void)
++AuStubInt0(__init au_debug_init, void)
++
++#define AuDbgWhlist(w)		do {} while (0)
++#define AuDbgVdir(v)		do {} while (0)
++#define AuDbgInode(i)		do {} while (0)
++#define AuDbgDAlias(i)		do {} while (0)
++#define AuDbgDentry(d)		do {} while (0)
++#define AuDbgFile(f)		do {} while (0)
++#define AuDbgSb(sb)		do {} while (0)
++#define AuDbgSym(addr)		do {} while (0)
++#endif /* CONFIG_AUFS_DEBUG */
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_MAGIC_SYSRQ
++int __init au_sysrq_init(void);
++void au_sysrq_fin(void);
++
++#ifdef CONFIG_HW_CONSOLE
++#define au_dbg_blocked() do { \
++	WARN_ON(1); \
++	handle_sysrq('w'); \
++} while (0)
++#else
++AuStubVoid(au_dbg_blocked, void)
++#endif
++
++#else
++AuStubInt0(__init au_sysrq_init, void)
++AuStubVoid(au_sysrq_fin, void)
++AuStubVoid(au_dbg_blocked, void)
++#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DEBUG_H__ */
+diff -Nurp linux-5.4/fs/aufs/dentry.c linux-5.4-aufs/fs/aufs/dentry.c
+--- linux-5.4/fs/aufs/dentry.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dentry.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,1141 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * lookup and dentry operations
++ */
++
++#include <linux/iversion.h>
++#include <linux/namei.h>
++#include "aufs.h"
++
++/*
++ * returns positive/negative dentry, NULL or an error.
++ * NULL means whiteout-ed or not-found.
++ */
++static struct dentry*
++au_do_lookup(struct dentry *h_parent, struct dentry *dentry,
++	     aufs_bindex_t bindex, struct au_do_lookup_args *args)
++{
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++	struct au_branch *br;
++	int wh_found, opq;
++	unsigned char wh_able;
++	const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG);
++	const unsigned char ignore_perm = !!au_ftest_lkup(args->flags,
++							  IGNORE_PERM);
++
++	wh_found = 0;
++	br = au_sbr(dentry->d_sb, bindex);
++	wh_able = !!au_br_whable(br->br_perm);
++	if (wh_able)
++		wh_found = au_wh_test(h_parent, &args->whname, ignore_perm);
++	h_dentry = ERR_PTR(wh_found);
++	if (!wh_found)
++		goto real_lookup;
++	if (unlikely(wh_found < 0))
++		goto out;
++
++	/* We found a whiteout */
++	/* au_set_dbbot(dentry, bindex); */
++	au_set_dbwh(dentry, bindex);
++	if (!allow_neg)
++		return NULL; /* success */
++
++real_lookup:
++	if (!ignore_perm)
++		h_dentry = vfsub_lkup_one(args->name, h_parent);
++	else
++		h_dentry = au_sio_lkup_one(args->name, h_parent);
++	if (IS_ERR(h_dentry)) {
++		if (PTR_ERR(h_dentry) == -ENAMETOOLONG
++		    && !allow_neg)
++			h_dentry = NULL;
++		goto out;
++	}
++
++	h_inode = d_inode(h_dentry);
++	if (d_is_negative(h_dentry)) {
++		if (!allow_neg)
++			goto out_neg;
++	} else if (wh_found
++		   || (args->type && args->type != (h_inode->i_mode & S_IFMT)))
++		goto out_neg;
++	else if (au_ftest_lkup(args->flags, DIRREN)
++		 /* && h_inode */
++		 && !au_dr_lkup_h_ino(args, bindex, h_inode->i_ino)) {
++		AuDbg("b%d %pd ignored hi%llu\n", bindex, h_dentry,
++		      (unsigned long long)h_inode->i_ino);
++		goto out_neg;
++	}
++
++	if (au_dbbot(dentry) <= bindex)
++		au_set_dbbot(dentry, bindex);
++	if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
++		au_set_dbtop(dentry, bindex);
++	au_set_h_dptr(dentry, bindex, h_dentry);
++
++	if (!d_is_dir(h_dentry)
++	    || !wh_able
++	    || (d_really_is_positive(dentry) && !d_is_dir(dentry)))
++		goto out; /* success */
++
++	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
++	opq = au_diropq_test(h_dentry);
++	inode_unlock_shared(h_inode);
++	if (opq > 0)
++		au_set_dbdiropq(dentry, bindex);
++	else if (unlikely(opq < 0)) {
++		au_set_h_dptr(dentry, bindex, NULL);
++		h_dentry = ERR_PTR(opq);
++	}
++	goto out;
++
++out_neg:
++	dput(h_dentry);
++	h_dentry = NULL;
++out:
++	return h_dentry;
++}
++
++static int au_test_shwh(struct super_block *sb, const struct qstr *name)
++{
++	if (unlikely(!au_opt_test(au_mntflags(sb), SHWH)
++		     && !strncmp(name->name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)))
++		return -EPERM;
++	return 0;
++}
++
++/*
++ * returns the number of lower positive dentries,
++ * otherwise an error.
++ * can be called at unlinking with @type is zero.
++ */
++int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
++		   unsigned int flags)
++{
++	int npositive, err;
++	aufs_bindex_t bindex, btail, bdiropq;
++	unsigned char isdir, dirperm1, dirren;
++	struct au_do_lookup_args args = {
++		.flags		= flags,
++		.name		= &dentry->d_name
++	};
++	struct dentry *parent;
++	struct super_block *sb;
++
++	sb = dentry->d_sb;
++	err = au_test_shwh(sb, args.name);
++	if (unlikely(err))
++		goto out;
++
++	err = au_wh_name_alloc(&args.whname, args.name);
++	if (unlikely(err))
++		goto out;
++
++	isdir = !!d_is_dir(dentry);
++	dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1);
++	dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
++	if (dirren)
++		au_fset_lkup(args.flags, DIRREN);
++
++	npositive = 0;
++	parent = dget_parent(dentry);
++	btail = au_dbtaildir(parent);
++	for (bindex = btop; bindex <= btail; bindex++) {
++		struct dentry *h_parent, *h_dentry;
++		struct inode *h_inode, *h_dir;
++		struct au_branch *br;
++
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (h_dentry) {
++			if (d_is_positive(h_dentry))
++				npositive++;
++			break;
++		}
++		h_parent = au_h_dptr(parent, bindex);
++		if (!h_parent || !d_is_dir(h_parent))
++			continue;
++
++		if (dirren) {
++			/* if the inum matches, then use the prepared name */
++			err = au_dr_lkup_name(&args, bindex);
++			if (unlikely(err))
++				goto out_parent;
++		}
++
++		h_dir = d_inode(h_parent);
++		inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
++		h_dentry = au_do_lookup(h_parent, dentry, bindex, &args);
++		inode_unlock_shared(h_dir);
++		err = PTR_ERR(h_dentry);
++		if (IS_ERR(h_dentry))
++			goto out_parent;
++		if (h_dentry)
++			au_fclr_lkup(args.flags, ALLOW_NEG);
++		if (dirperm1)
++			au_fset_lkup(args.flags, IGNORE_PERM);
++
++		if (au_dbwh(dentry) == bindex)
++			break;
++		if (!h_dentry)
++			continue;
++		if (d_is_negative(h_dentry))
++			continue;
++		h_inode = d_inode(h_dentry);
++		npositive++;
++		if (!args.type)
++			args.type = h_inode->i_mode & S_IFMT;
++		if (args.type != S_IFDIR)
++			break;
++		else if (isdir) {
++			/* the type of lower may be different */
++			bdiropq = au_dbdiropq(dentry);
++			if (bdiropq >= 0 && bdiropq <= bindex)
++				break;
++		}
++		br = au_sbr(sb, bindex);
++		if (dirren
++		    && au_dr_hino_test_add(&br->br_dirren, h_inode->i_ino,
++					   /*add_ent*/NULL)) {
++			/* prepare next name to lookup */
++			err = au_dr_lkup(&args, dentry, bindex);
++			if (unlikely(err))
++				goto out_parent;
++		}
++	}
++
++	if (npositive) {
++		AuLabel(positive);
++		au_update_dbtop(dentry);
++	}
++	err = npositive;
++	if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE)
++		     && au_dbtop(dentry) < 0)) {
++		err = -EIO;
++		AuIOErr("both of real entry and whiteout found, %pd, err %d\n",
++			dentry, err);
++	}
++
++out_parent:
++	dput(parent);
++	au_kfree_try_rcu(args.whname.name);
++	if (dirren)
++		au_dr_lkup_fin(&args);
++out:
++	return err;
++}
++
++struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent)
++{
++	struct dentry *dentry;
++	int wkq_err;
++
++	if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC))
++		dentry = vfsub_lkup_one(name, parent);
++	else {
++		struct vfsub_lkup_one_args args = {
++			.errp	= &dentry,
++			.name	= name,
++			.parent	= parent
++		};
++
++		wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args);
++		if (unlikely(wkq_err))
++			dentry = ERR_PTR(wkq_err);
++	}
++
++	return dentry;
++}
++
++/*
++ * lookup @dentry on @bindex which should be negative.
++ */
++int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh)
++{
++	int err;
++	struct dentry *parent, *h_parent, *h_dentry;
++	struct au_branch *br;
++
++	parent = dget_parent(dentry);
++	h_parent = au_h_dptr(parent, bindex);
++	br = au_sbr(dentry->d_sb, bindex);
++	if (wh)
++		h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
++	else
++		h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent);
++	err = PTR_ERR(h_dentry);
++	if (IS_ERR(h_dentry))
++		goto out;
++	if (unlikely(d_is_positive(h_dentry))) {
++		err = -EIO;
++		AuIOErr("%pd should be negative on b%d.\n", h_dentry, bindex);
++		dput(h_dentry);
++		goto out;
++	}
++
++	err = 0;
++	if (bindex < au_dbtop(dentry))
++		au_set_dbtop(dentry, bindex);
++	if (au_dbbot(dentry) < bindex)
++		au_set_dbbot(dentry, bindex);
++	au_set_h_dptr(dentry, bindex, h_dentry);
++
++out:
++	dput(parent);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* subset of struct inode */
++struct au_iattr {
++	unsigned long		i_ino;
++	/* unsigned int		i_nlink; */
++	kuid_t			i_uid;
++	kgid_t			i_gid;
++	u64			i_version;
++/*
++	loff_t			i_size;
++	blkcnt_t		i_blocks;
++*/
++	umode_t			i_mode;
++};
++
++static void au_iattr_save(struct au_iattr *ia, struct inode *h_inode)
++{
++	ia->i_ino = h_inode->i_ino;
++	/* ia->i_nlink = h_inode->i_nlink; */
++	ia->i_uid = h_inode->i_uid;
++	ia->i_gid = h_inode->i_gid;
++	ia->i_version = inode_query_iversion(h_inode);
++/*
++	ia->i_size = h_inode->i_size;
++	ia->i_blocks = h_inode->i_blocks;
++*/
++	ia->i_mode = (h_inode->i_mode & S_IFMT);
++}
++
++static int au_iattr_test(struct au_iattr *ia, struct inode *h_inode)
++{
++	return ia->i_ino != h_inode->i_ino
++		/* || ia->i_nlink != h_inode->i_nlink */
++		|| !uid_eq(ia->i_uid, h_inode->i_uid)
++		|| !gid_eq(ia->i_gid, h_inode->i_gid)
++		|| !inode_eq_iversion(h_inode, ia->i_version)
++/*
++		|| ia->i_size != h_inode->i_size
++		|| ia->i_blocks != h_inode->i_blocks
++*/
++		|| ia->i_mode != (h_inode->i_mode & S_IFMT);
++}
++
++static int au_h_verify_dentry(struct dentry *h_dentry, struct dentry *h_parent,
++			      struct au_branch *br)
++{
++	int err;
++	struct au_iattr ia;
++	struct inode *h_inode;
++	struct dentry *h_d;
++	struct super_block *h_sb;
++
++	err = 0;
++	memset(&ia, -1, sizeof(ia));
++	h_sb = h_dentry->d_sb;
++	h_inode = NULL;
++	if (d_is_positive(h_dentry)) {
++		h_inode = d_inode(h_dentry);
++		au_iattr_save(&ia, h_inode);
++	} else if (au_test_nfs(h_sb) || au_test_fuse(h_sb))
++		/* nfs d_revalidate may return 0 for negative dentry */
++		/* fuse d_revalidate always return 0 for negative dentry */
++		goto out;
++
++	/* main purpose is namei.c:cached_lookup() and d_revalidate */
++	h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent);
++	err = PTR_ERR(h_d);
++	if (IS_ERR(h_d))
++		goto out;
++
++	err = 0;
++	if (unlikely(h_d != h_dentry
++		     || d_inode(h_d) != h_inode
++		     || (h_inode && au_iattr_test(&ia, h_inode))))
++		err = au_busy_or_stale();
++	dput(h_d);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
++		struct dentry *h_parent, struct au_branch *br)
++{
++	int err;
++
++	err = 0;
++	if (udba == AuOpt_UDBA_REVAL
++	    && !au_test_fs_remote(h_dentry->d_sb)) {
++		IMustLock(h_dir);
++		err = (d_inode(h_dentry->d_parent) != h_dir);
++	} else if (udba != AuOpt_UDBA_NONE)
++		err = au_h_verify_dentry(h_dentry, h_parent, br);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent)
++{
++	int err;
++	aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq;
++	struct au_hdentry tmp, *p, *q;
++	struct au_dinfo *dinfo;
++	struct super_block *sb;
++
++	DiMustWriteLock(dentry);
++
++	sb = dentry->d_sb;
++	dinfo = au_di(dentry);
++	bbot = dinfo->di_bbot;
++	bwh = dinfo->di_bwh;
++	bdiropq = dinfo->di_bdiropq;
++	bindex = dinfo->di_btop;
++	p = au_hdentry(dinfo, bindex);
++	for (; bindex <= bbot; bindex++, p++) {
++		if (!p->hd_dentry)
++			continue;
++
++		new_bindex = au_br_index(sb, p->hd_id);
++		if (new_bindex == bindex)
++			continue;
++
++		if (dinfo->di_bwh == bindex)
++			bwh = new_bindex;
++		if (dinfo->di_bdiropq == bindex)
++			bdiropq = new_bindex;
++		if (new_bindex < 0) {
++			au_hdput(p);
++			p->hd_dentry = NULL;
++			continue;
++		}
++
++		/* swap two lower dentries, and loop again */
++		q = au_hdentry(dinfo, new_bindex);
++		tmp = *q;
++		*q = *p;
++		*p = tmp;
++		if (tmp.hd_dentry) {
++			bindex--;
++			p--;
++		}
++	}
++
++	dinfo->di_bwh = -1;
++	if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh))
++		dinfo->di_bwh = bwh;
++
++	dinfo->di_bdiropq = -1;
++	if (bdiropq >= 0
++	    && bdiropq <= au_sbbot(sb)
++	    && au_sbr_whable(sb, bdiropq))
++		dinfo->di_bdiropq = bdiropq;
++
++	err = -EIO;
++	dinfo->di_btop = -1;
++	dinfo->di_bbot = -1;
++	bbot = au_dbbot(parent);
++	bindex = 0;
++	p = au_hdentry(dinfo, bindex);
++	for (; bindex <= bbot; bindex++, p++)
++		if (p->hd_dentry) {
++			dinfo->di_btop = bindex;
++			break;
++		}
++
++	if (dinfo->di_btop >= 0) {
++		bindex = bbot;
++		p = au_hdentry(dinfo, bindex);
++		for (; bindex >= 0; bindex--, p--)
++			if (p->hd_dentry) {
++				dinfo->di_bbot = bindex;
++				err = 0;
++				break;
++			}
++	}
++
++	return err;
++}
++
++static void au_do_hide(struct dentry *dentry)
++{
++	struct inode *inode;
++
++	if (d_really_is_positive(dentry)) {
++		inode = d_inode(dentry);
++		if (!d_is_dir(dentry)) {
++			if (inode->i_nlink && !d_unhashed(dentry))
++				drop_nlink(inode);
++		} else {
++			clear_nlink(inode);
++			/* stop next lookup */
++			inode->i_flags |= S_DEAD;
++		}
++		smp_mb(); /* necessary? */
++	}
++	d_drop(dentry);
++}
++
++static int au_hide_children(struct dentry *parent)
++{
++	int err, i, j, ndentry;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry *dentry;
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	err = au_dcsub_pages(&dpages, parent, NULL, NULL);
++	if (unlikely(err))
++		goto out_dpages;
++
++	/* in reverse order */
++	for (i = dpages.ndpage - 1; i >= 0; i--) {
++		dpage = dpages.dpages + i;
++		ndentry = dpage->ndentry;
++		for (j = ndentry - 1; j >= 0; j--) {
++			dentry = dpage->dentries[j];
++			if (dentry != parent)
++				au_do_hide(dentry);
++		}
++	}
++
++out_dpages:
++	au_dpages_free(&dpages);
++out:
++	return err;
++}
++
++static void au_hide(struct dentry *dentry)
++{
++	int err;
++
++	AuDbgDentry(dentry);
++	if (d_is_dir(dentry)) {
++		/* shrink_dcache_parent(dentry); */
++		err = au_hide_children(dentry);
++		if (unlikely(err))
++			AuIOErr("%pd, failed hiding children, ignored %d\n",
++				dentry, err);
++	}
++	au_do_hide(dentry);
++}
++
++/*
++ * By adding a dirty branch, a cached dentry may be affected in various ways.
++ *
++ * a dirty branch is added
++ * - on the top of layers
++ * - in the middle of layers
++ * - to the bottom of layers
++ *
++ * on the added branch there exists
++ * - a whiteout
++ * - a diropq
++ * - a same named entry
++ *   + exist
++ *     * negative --> positive
++ *     * positive --> positive
++ *	 - type is unchanged
++ *	 - type is changed
++ *   + doesn't exist
++ *     * negative --> negative
++ *     * positive --> negative (rejected by au_br_del() for non-dir case)
++ * - none
++ */
++static int au_refresh_by_dinfo(struct dentry *dentry, struct au_dinfo *dinfo,
++			       struct au_dinfo *tmp)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct {
++		struct dentry *dentry;
++		struct inode *inode;
++		mode_t mode;
++	} orig_h, tmp_h = {
++		.dentry = NULL
++	};
++	struct au_hdentry *hd;
++	struct inode *inode, *h_inode;
++	struct dentry *h_dentry;
++
++	err = 0;
++	AuDebugOn(dinfo->di_btop < 0);
++	orig_h.mode = 0;
++	orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry;
++	orig_h.inode = NULL;
++	if (d_is_positive(orig_h.dentry)) {
++		orig_h.inode = d_inode(orig_h.dentry);
++		orig_h.mode = orig_h.inode->i_mode & S_IFMT;
++	}
++	if (tmp->di_btop >= 0) {
++		tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry;
++		if (d_is_positive(tmp_h.dentry)) {
++			tmp_h.inode = d_inode(tmp_h.dentry);
++			tmp_h.mode = tmp_h.inode->i_mode & S_IFMT;
++		}
++	}
++
++	inode = NULL;
++	if (d_really_is_positive(dentry))
++		inode = d_inode(dentry);
++	if (!orig_h.inode) {
++		AuDbg("negative originally\n");
++		if (inode) {
++			au_hide(dentry);
++			goto out;
++		}
++		AuDebugOn(inode);
++		AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
++		AuDebugOn(dinfo->di_bdiropq != -1);
++
++		if (!tmp_h.inode) {
++			AuDbg("negative --> negative\n");
++			/* should have only one negative lower */
++			if (tmp->di_btop >= 0
++			    && tmp->di_btop < dinfo->di_btop) {
++				AuDebugOn(tmp->di_btop != tmp->di_bbot);
++				AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
++				au_set_h_dptr(dentry, dinfo->di_btop, NULL);
++				au_di_cp(dinfo, tmp);
++				hd = au_hdentry(tmp, tmp->di_btop);
++				au_set_h_dptr(dentry, tmp->di_btop,
++					      dget(hd->hd_dentry));
++			}
++			au_dbg_verify_dinode(dentry);
++		} else {
++			AuDbg("negative --> positive\n");
++			/*
++			 * similar to the behaviour of creating with bypassing
++			 * aufs.
++			 * unhash it in order to force an error in the
++			 * succeeding create operation.
++			 * we should not set S_DEAD here.
++			 */
++			d_drop(dentry);
++			/* au_di_swap(tmp, dinfo); */
++			au_dbg_verify_dinode(dentry);
++		}
++	} else {
++		AuDbg("positive originally\n");
++		/* inode may be NULL */
++		AuDebugOn(inode && (inode->i_mode & S_IFMT) != orig_h.mode);
++		if (!tmp_h.inode) {
++			AuDbg("positive --> negative\n");
++			/* or bypassing aufs */
++			au_hide(dentry);
++			if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop)
++				dinfo->di_bwh = tmp->di_bwh;
++			if (inode)
++				err = au_refresh_hinode_self(inode);
++			au_dbg_verify_dinode(dentry);
++		} else if (orig_h.mode == tmp_h.mode) {
++			AuDbg("positive --> positive, same type\n");
++			if (!S_ISDIR(orig_h.mode)
++			    && dinfo->di_btop > tmp->di_btop) {
++				/*
++				 * similar to the behaviour of removing and
++				 * creating.
++				 */
++				au_hide(dentry);
++				if (inode)
++					err = au_refresh_hinode_self(inode);
++				au_dbg_verify_dinode(dentry);
++			} else {
++				/* fill empty slots */
++				if (dinfo->di_btop > tmp->di_btop)
++					dinfo->di_btop = tmp->di_btop;
++				if (dinfo->di_bbot < tmp->di_bbot)
++					dinfo->di_bbot = tmp->di_bbot;
++				dinfo->di_bwh = tmp->di_bwh;
++				dinfo->di_bdiropq = tmp->di_bdiropq;
++				bbot = dinfo->di_bbot;
++				bindex = tmp->di_btop;
++				hd = au_hdentry(tmp, bindex);
++				for (; bindex <= bbot; bindex++, hd++) {
++					if (au_h_dptr(dentry, bindex))
++						continue;
++					h_dentry = hd->hd_dentry;
++					if (!h_dentry)
++						continue;
++					AuDebugOn(d_is_negative(h_dentry));
++					h_inode = d_inode(h_dentry);
++					AuDebugOn(orig_h.mode
++						  != (h_inode->i_mode
++						      & S_IFMT));
++					au_set_h_dptr(dentry, bindex,
++						      dget(h_dentry));
++				}
++				if (inode)
++					err = au_refresh_hinode(inode, dentry);
++				au_dbg_verify_dinode(dentry);
++			}
++		} else {
++			AuDbg("positive --> positive, different type\n");
++			/* similar to the behaviour of removing and creating */
++			au_hide(dentry);
++			if (inode)
++				err = au_refresh_hinode_self(inode);
++			au_dbg_verify_dinode(dentry);
++		}
++	}
++
++out:
++	return err;
++}
++
++void au_refresh_dop(struct dentry *dentry, int force_reval)
++{
++	const struct dentry_operations *dop
++		= force_reval ? &aufs_dop : dentry->d_sb->s_d_op;
++	static const unsigned int mask
++		= DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE;
++
++	BUILD_BUG_ON(sizeof(mask) != sizeof(dentry->d_flags));
++
++	if (dentry->d_op == dop)
++		return;
++
++	AuDbg("%pd\n", dentry);
++	spin_lock(&dentry->d_lock);
++	if (dop == &aufs_dop)
++		dentry->d_flags |= mask;
++	else
++		dentry->d_flags &= ~mask;
++	dentry->d_op = dop;
++	spin_unlock(&dentry->d_lock);
++}
++
++int au_refresh_dentry(struct dentry *dentry, struct dentry *parent)
++{
++	int err, ebrange, nbr;
++	unsigned int sigen;
++	struct au_dinfo *dinfo, *tmp;
++	struct super_block *sb;
++	struct inode *inode;
++
++	DiMustWriteLock(dentry);
++	AuDebugOn(IS_ROOT(dentry));
++	AuDebugOn(d_really_is_negative(parent));
++
++	sb = dentry->d_sb;
++	sigen = au_sigen(sb);
++	err = au_digen_test(parent, sigen);
++	if (unlikely(err))
++		goto out;
++
++	nbr = au_sbbot(sb) + 1;
++	dinfo = au_di(dentry);
++	err = au_di_realloc(dinfo, nbr, /*may_shrink*/0);
++	if (unlikely(err))
++		goto out;
++	ebrange = au_dbrange_test(dentry);
++	if (!ebrange)
++		ebrange = au_do_refresh_hdentry(dentry, parent);
++
++	if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) {
++		AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0);
++		if (d_really_is_positive(dentry)) {
++			inode = d_inode(dentry);
++			err = au_refresh_hinode_self(inode);
++		}
++		au_dbg_verify_dinode(dentry);
++		if (!err)
++			goto out_dgen; /* success */
++		goto out;
++	}
++
++	/* temporary dinfo */
++	AuDbgDentry(dentry);
++	err = -ENOMEM;
++	tmp = au_di_alloc(sb, AuLsc_DI_TMP);
++	if (unlikely(!tmp))
++		goto out;
++	au_di_swap(tmp, dinfo);
++	/* returns the number of positive dentries */
++	/*
++	 * if current working dir is removed, it returns an error.
++	 * but the dentry is legal.
++	 */
++	err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
++	AuDbgDentry(dentry);
++	au_di_swap(tmp, dinfo);
++	if (err == -ENOENT)
++		err = 0;
++	if (err >= 0) {
++		/* compare/refresh by dinfo */
++		AuDbgDentry(dentry);
++		err = au_refresh_by_dinfo(dentry, dinfo, tmp);
++		au_dbg_verify_dinode(dentry);
++		AuTraceErr(err);
++	}
++	au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */
++	au_rw_write_unlock(&tmp->di_rwsem);
++	au_di_free(tmp);
++	if (unlikely(err))
++		goto out;
++
++out_dgen:
++	au_update_digen(dentry);
++out:
++	if (unlikely(err && !(dentry->d_flags & DCACHE_NFSFS_RENAMED))) {
++		AuIOErr("failed refreshing %pd, %d\n", dentry, err);
++		AuDbgDentry(dentry);
++	}
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_do_h_d_reval(struct dentry *h_dentry, unsigned int flags,
++			   struct dentry *dentry, aufs_bindex_t bindex)
++{
++	int err, valid;
++
++	err = 0;
++	if (!(h_dentry->d_flags & DCACHE_OP_REVALIDATE))
++		goto out;
++
++	AuDbg("b%d\n", bindex);
++	/*
++	 * gave up supporting LOOKUP_CREATE/OPEN for lower fs,
++	 * due to whiteout and branch permission.
++	 */
++	flags &= ~(/*LOOKUP_PARENT |*/ LOOKUP_OPEN | LOOKUP_CREATE
++		   | LOOKUP_FOLLOW | LOOKUP_EXCL);
++	/* it may return tri-state */
++	valid = h_dentry->d_op->d_revalidate(h_dentry, flags);
++
++	if (unlikely(valid < 0))
++		err = valid;
++	else if (!valid)
++		err = -EINVAL;
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* todo: remove this */
++static int h_d_revalidate(struct dentry *dentry, struct inode *inode,
++			  unsigned int flags, int do_udba, int dirren)
++{
++	int err;
++	umode_t mode, h_mode;
++	aufs_bindex_t bindex, btail, btop, ibs, ibe;
++	unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile;
++	struct inode *h_inode, *h_cached_inode;
++	struct dentry *h_dentry;
++	struct qstr *name, *h_name;
++
++	err = 0;
++	plus = 0;
++	mode = 0;
++	ibs = -1;
++	ibe = -1;
++	unhashed = !!d_unhashed(dentry);
++	is_root = !!IS_ROOT(dentry);
++	name = &dentry->d_name;
++	tmpfile = au_di(dentry)->di_tmpfile;
++
++	/*
++	 * Theoretically, REVAL test should be unnecessary in case of
++	 * {FS,I}NOTIFY.
++	 * But {fs,i}notify doesn't fire some necessary events,
++	 *	IN_ATTRIB for atime/nlink/pageio
++	 * Let's do REVAL test too.
++	 */
++	if (do_udba && inode) {
++		mode = (inode->i_mode & S_IFMT);
++		plus = (inode->i_nlink > 0);
++		ibs = au_ibtop(inode);
++		ibe = au_ibbot(inode);
++	}
++
++	btop = au_dbtop(dentry);
++	btail = btop;
++	if (inode && S_ISDIR(inode->i_mode))
++		btail = au_dbtaildir(dentry);
++	for (bindex = btop; bindex <= btail; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++
++		AuDbg("b%d, %pd\n", bindex, h_dentry);
++		h_nfs = !!au_test_nfs(h_dentry->d_sb);
++		spin_lock(&h_dentry->d_lock);
++		h_name = &h_dentry->d_name;
++		if (unlikely(do_udba
++			     && !is_root
++			     && ((!h_nfs
++				  && (unhashed != !!d_unhashed(h_dentry)
++				      || (!tmpfile && !dirren
++					  && !au_qstreq(name, h_name))
++					  ))
++				 || (h_nfs
++				     && !(flags & LOOKUP_OPEN)
++				     && (h_dentry->d_flags
++					 & DCACHE_NFSFS_RENAMED)))
++			    )) {
++			int h_unhashed;
++
++			h_unhashed = d_unhashed(h_dentry);
++			spin_unlock(&h_dentry->d_lock);
++			AuDbg("unhash 0x%x 0x%x, %pd %pd\n",
++			      unhashed, h_unhashed, dentry, h_dentry);
++			goto err;
++		}
++		spin_unlock(&h_dentry->d_lock);
++
++		err = au_do_h_d_reval(h_dentry, flags, dentry, bindex);
++		if (unlikely(err))
++			/* do not goto err, to keep the errno */
++			break;
++
++		/* todo: plink too? */
++		if (!do_udba)
++			continue;
++
++		/* UDBA tests */
++		if (unlikely(!!inode != d_is_positive(h_dentry)))
++			goto err;
++
++		h_inode = NULL;
++		if (d_is_positive(h_dentry))
++			h_inode = d_inode(h_dentry);
++		h_plus = plus;
++		h_mode = mode;
++		h_cached_inode = h_inode;
++		if (h_inode) {
++			h_mode = (h_inode->i_mode & S_IFMT);
++			h_plus = (h_inode->i_nlink > 0);
++		}
++		if (inode && ibs <= bindex && bindex <= ibe)
++			h_cached_inode = au_h_iptr(inode, bindex);
++
++		if (!h_nfs) {
++			if (unlikely(plus != h_plus && !tmpfile))
++				goto err;
++		} else {
++			if (unlikely(!(h_dentry->d_flags & DCACHE_NFSFS_RENAMED)
++				     && !is_root
++				     && !IS_ROOT(h_dentry)
++				     && unhashed != d_unhashed(h_dentry)))
++				goto err;
++		}
++		if (unlikely(mode != h_mode
++			     || h_cached_inode != h_inode))
++			goto err;
++		continue;
++
++err:
++		err = -EINVAL;
++		break;
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++/* todo: consolidate with do_refresh() and au_reval_for_attr() */
++static int simple_reval_dpath(struct dentry *dentry, unsigned int sigen)
++{
++	int err;
++	struct dentry *parent;
++
++	if (!au_digen_test(dentry, sigen))
++		return 0;
++
++	parent = dget_parent(dentry);
++	di_read_lock_parent(parent, AuLock_IR);
++	AuDebugOn(au_digen_test(parent, sigen));
++	au_dbg_verify_gen(parent, sigen);
++	err = au_refresh_dentry(dentry, parent);
++	di_read_unlock(parent, AuLock_IR);
++	dput(parent);
++	AuTraceErr(err);
++	return err;
++}
++
++int au_reval_dpath(struct dentry *dentry, unsigned int sigen)
++{
++	int err;
++	struct dentry *d, *parent;
++
++	if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR))
++		return simple_reval_dpath(dentry, sigen);
++
++	/* slow loop, keep it simple and stupid */
++	/* cf: au_cpup_dirs() */
++	err = 0;
++	parent = NULL;
++	while (au_digen_test(dentry, sigen)) {
++		d = dentry;
++		while (1) {
++			dput(parent);
++			parent = dget_parent(d);
++			if (!au_digen_test(parent, sigen))
++				break;
++			d = parent;
++		}
++
++		if (d != dentry)
++			di_write_lock_child2(d);
++
++		/* someone might update our dentry while we were sleeping */
++		if (au_digen_test(d, sigen)) {
++			/*
++			 * todo: consolidate with simple_reval_dpath(),
++			 * do_refresh() and au_reval_for_attr().
++			 */
++			di_read_lock_parent(parent, AuLock_IR);
++			err = au_refresh_dentry(d, parent);
++			di_read_unlock(parent, AuLock_IR);
++		}
++
++		if (d != dentry)
++			di_write_unlock(d);
++		dput(parent);
++		if (unlikely(err))
++			break;
++	}
++
++	return err;
++}
++
++/*
++ * if valid returns 1, otherwise 0.
++ */
++static int aufs_d_revalidate(struct dentry *dentry, unsigned int flags)
++{
++	int valid, err;
++	unsigned int sigen;
++	unsigned char do_udba, dirren;
++	struct super_block *sb;
++	struct inode *inode;
++
++	/* todo: support rcu-walk? */
++	if (flags & LOOKUP_RCU)
++		return -ECHILD;
++
++	valid = 0;
++	if (unlikely(!au_di(dentry)))
++		goto out;
++
++	valid = 1;
++	sb = dentry->d_sb;
++	/*
++	 * todo: very ugly
++	 * i_mutex of parent dir may be held,
++	 * but we should not return 'invalid' due to busy.
++	 */
++	err = aufs_read_lock(dentry, AuLock_FLUSH | AuLock_DW | AuLock_NOPLM);
++	if (unlikely(err)) {
++		valid = err;
++		AuTraceErr(err);
++		goto out;
++	}
++	inode = NULL;
++	if (d_really_is_positive(dentry))
++		inode = d_inode(dentry);
++	if (unlikely(inode && au_is_bad_inode(inode))) {
++		err = -EINVAL;
++		AuTraceErr(err);
++		goto out_dgrade;
++	}
++	if (unlikely(au_dbrange_test(dentry))) {
++		err = -EINVAL;
++		AuTraceErr(err);
++		goto out_dgrade;
++	}
++
++	sigen = au_sigen(sb);
++	if (au_digen_test(dentry, sigen)) {
++		AuDebugOn(IS_ROOT(dentry));
++		err = au_reval_dpath(dentry, sigen);
++		if (unlikely(err)) {
++			AuTraceErr(err);
++			goto out_dgrade;
++		}
++	}
++	di_downgrade_lock(dentry, AuLock_IR);
++
++	err = -EINVAL;
++	if (!(flags & (LOOKUP_OPEN | LOOKUP_EMPTY))
++	    && inode
++	    && !(inode->i_state && I_LINKABLE)
++	    && (IS_DEADDIR(inode) || !inode->i_nlink)) {
++		AuTraceErr(err);
++		goto out_inval;
++	}
++
++	do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE);
++	if (do_udba && inode) {
++		aufs_bindex_t btop = au_ibtop(inode);
++		struct inode *h_inode;
++
++		if (btop >= 0) {
++			h_inode = au_h_iptr(inode, btop);
++			if (h_inode && au_test_higen(inode, h_inode)) {
++				AuTraceErr(err);
++				goto out_inval;
++			}
++		}
++	}
++
++	dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
++	err = h_d_revalidate(dentry, inode, flags, do_udba, dirren);
++	if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) {
++		err = -EIO;
++		AuDbg("both of real entry and whiteout found, %p, err %d\n",
++		      dentry, err);
++	}
++	goto out_inval;
++
++out_dgrade:
++	di_downgrade_lock(dentry, AuLock_IR);
++out_inval:
++	aufs_read_unlock(dentry, AuLock_IR);
++	AuTraceErr(err);
++	valid = !err;
++out:
++	if (!valid) {
++		AuDbg("%pd invalid, %d\n", dentry, valid);
++		d_drop(dentry);
++	}
++	return valid;
++}
++
++static void aufs_d_release(struct dentry *dentry)
++{
++	if (au_di(dentry)) {
++		au_di_fin(dentry);
++		au_hn_di_reinit(dentry);
++	}
++}
++
++const struct dentry_operations aufs_dop = {
++	.d_revalidate		= aufs_d_revalidate,
++	.d_weak_revalidate	= aufs_d_revalidate,
++	.d_release		= aufs_d_release
++};
++
++/* aufs_dop without d_revalidate */
++const struct dentry_operations aufs_dop_noreval = {
++	.d_release		= aufs_d_release
++};
+diff -Nurp linux-5.4/fs/aufs/dentry.h linux-5.4-aufs/fs/aufs/dentry.h
+--- linux-5.4/fs/aufs/dentry.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dentry.h	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,255 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * lookup and dentry operations
++ */
++
++#ifndef __AUFS_DENTRY_H__
++#define __AUFS_DENTRY_H__
++
++#ifdef __KERNEL__
++
++#include <linux/dcache.h>
++#include "dirren.h"
++#include "rwsem.h"
++
++struct au_hdentry {
++	struct dentry		*hd_dentry;
++	aufs_bindex_t		hd_id;
++};
++
++struct au_dinfo {
++	atomic_t		di_generation;
++
++	struct au_rwsem		di_rwsem;
++	aufs_bindex_t		di_btop, di_bbot, di_bwh, di_bdiropq;
++	unsigned char		di_tmpfile; /* to allow the different name */
++	struct au_hdentry	*di_hdentry;
++	struct rcu_head		rcu;
++} ____cacheline_aligned_in_smp;
++
++/* ---------------------------------------------------------------------- */
++
++/* flags for au_lkup_dentry() */
++#define AuLkup_ALLOW_NEG	1
++#define AuLkup_IGNORE_PERM	(1 << 1)
++#define AuLkup_DIRREN		(1 << 2)
++#define au_ftest_lkup(flags, name)	((flags) & AuLkup_##name)
++#define au_fset_lkup(flags, name) \
++	do { (flags) |= AuLkup_##name; } while (0)
++#define au_fclr_lkup(flags, name) \
++	do { (flags) &= ~AuLkup_##name; } while (0)
++
++#ifndef CONFIG_AUFS_DIRREN
++#undef AuLkup_DIRREN
++#define AuLkup_DIRREN 0
++#endif
++
++struct au_do_lookup_args {
++	unsigned int		flags;
++	mode_t			type;
++	struct qstr		whname, *name;
++	struct au_dr_lookup	dirren;
++};
++
++/* ---------------------------------------------------------------------- */
++
++/* dentry.c */
++extern const struct dentry_operations aufs_dop, aufs_dop_noreval;
++struct au_branch;
++struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent);
++int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
++		struct dentry *h_parent, struct au_branch *br);
++
++int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
++		   unsigned int flags);
++int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh);
++int au_refresh_dentry(struct dentry *dentry, struct dentry *parent);
++int au_reval_dpath(struct dentry *dentry, unsigned int sigen);
++void au_refresh_dop(struct dentry *dentry, int force_reval);
++
++/* dinfo.c */
++void au_di_init_once(void *_di);
++struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc);
++void au_di_free(struct au_dinfo *dinfo);
++void au_di_swap(struct au_dinfo *a, struct au_dinfo *b);
++void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src);
++int au_di_init(struct dentry *dentry);
++void au_di_fin(struct dentry *dentry);
++int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink);
++
++void di_read_lock(struct dentry *d, int flags, unsigned int lsc);
++void di_read_unlock(struct dentry *d, int flags);
++void di_downgrade_lock(struct dentry *d, int flags);
++void di_write_lock(struct dentry *d, unsigned int lsc);
++void di_write_unlock(struct dentry *d);
++void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir);
++void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir);
++void di_write_unlock2(struct dentry *d1, struct dentry *d2);
++
++struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex);
++struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex);
++aufs_bindex_t au_dbtail(struct dentry *dentry);
++aufs_bindex_t au_dbtaildir(struct dentry *dentry);
++
++void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
++		   struct dentry *h_dentry);
++int au_digen_test(struct dentry *dentry, unsigned int sigen);
++int au_dbrange_test(struct dentry *dentry);
++void au_update_digen(struct dentry *dentry);
++void au_update_dbrange(struct dentry *dentry, int do_put_zero);
++void au_update_dbtop(struct dentry *dentry);
++void au_update_dbbot(struct dentry *dentry);
++int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry);
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct au_dinfo *au_di(struct dentry *dentry)
++{
++	return dentry->d_fsdata;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* lock subclass for dinfo */
++enum {
++	AuLsc_DI_CHILD,		/* child first */
++	AuLsc_DI_CHILD2,	/* rename(2), link(2), and cpup at hnotify */
++	AuLsc_DI_CHILD3,	/* copyup dirs */
++	AuLsc_DI_PARENT,
++	AuLsc_DI_PARENT2,
++	AuLsc_DI_PARENT3,
++	AuLsc_DI_TMP		/* temp for replacing dinfo */
++};
++
++/*
++ * di_read_lock_child, di_write_lock_child,
++ * di_read_lock_child2, di_write_lock_child2,
++ * di_read_lock_child3, di_write_lock_child3,
++ * di_read_lock_parent, di_write_lock_parent,
++ * di_read_lock_parent2, di_write_lock_parent2,
++ * di_read_lock_parent3, di_write_lock_parent3,
++ */
++#define AuReadLockFunc(name, lsc) \
++static inline void di_read_lock_##name(struct dentry *d, int flags) \
++{ di_read_lock(d, flags, AuLsc_DI_##lsc); }
++
++#define AuWriteLockFunc(name, lsc) \
++static inline void di_write_lock_##name(struct dentry *d) \
++{ di_write_lock(d, AuLsc_DI_##lsc); }
++
++#define AuRWLockFuncs(name, lsc) \
++	AuReadLockFunc(name, lsc) \
++	AuWriteLockFunc(name, lsc)
++
++AuRWLockFuncs(child, CHILD);
++AuRWLockFuncs(child2, CHILD2);
++AuRWLockFuncs(child3, CHILD3);
++AuRWLockFuncs(parent, PARENT);
++AuRWLockFuncs(parent2, PARENT2);
++AuRWLockFuncs(parent3, PARENT3);
++
++#undef AuReadLockFunc
++#undef AuWriteLockFunc
++#undef AuRWLockFuncs
++
++#define DiMustNoWaiters(d)	AuRwMustNoWaiters(&au_di(d)->di_rwsem)
++#define DiMustAnyLock(d)	AuRwMustAnyLock(&au_di(d)->di_rwsem)
++#define DiMustWriteLock(d)	AuRwMustWriteLock(&au_di(d)->di_rwsem)
++
++/* ---------------------------------------------------------------------- */
++
++/* todo: memory barrier? */
++static inline unsigned int au_digen(struct dentry *d)
++{
++	return atomic_read(&au_di(d)->di_generation);
++}
++
++static inline void au_h_dentry_init(struct au_hdentry *hdentry)
++{
++	hdentry->hd_dentry = NULL;
++}
++
++static inline struct au_hdentry *au_hdentry(struct au_dinfo *di,
++					    aufs_bindex_t bindex)
++{
++	return di->di_hdentry + bindex;
++}
++
++static inline void au_hdput(struct au_hdentry *hd)
++{
++	if (hd)
++		dput(hd->hd_dentry);
++}
++
++static inline aufs_bindex_t au_dbtop(struct dentry *dentry)
++{
++	DiMustAnyLock(dentry);
++	return au_di(dentry)->di_btop;
++}
++
++static inline aufs_bindex_t au_dbbot(struct dentry *dentry)
++{
++	DiMustAnyLock(dentry);
++	return au_di(dentry)->di_bbot;
++}
++
++static inline aufs_bindex_t au_dbwh(struct dentry *dentry)
++{
++	DiMustAnyLock(dentry);
++	return au_di(dentry)->di_bwh;
++}
++
++static inline aufs_bindex_t au_dbdiropq(struct dentry *dentry)
++{
++	DiMustAnyLock(dentry);
++	return au_di(dentry)->di_bdiropq;
++}
++
++/* todo: hard/soft set? */
++static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	DiMustWriteLock(dentry);
++	au_di(dentry)->di_btop = bindex;
++}
++
++static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	DiMustWriteLock(dentry);
++	au_di(dentry)->di_bbot = bindex;
++}
++
++static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	DiMustWriteLock(dentry);
++	/* dbwh can be outside of btop - bbot range */
++	au_di(dentry)->di_bwh = bindex;
++}
++
++static inline void au_set_dbdiropq(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	DiMustWriteLock(dentry);
++	au_di(dentry)->di_bdiropq = bindex;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_HNOTIFY
++static inline void au_digen_dec(struct dentry *d)
++{
++	atomic_dec(&au_di(d)->di_generation);
++}
++
++static inline void au_hn_di_reinit(struct dentry *dentry)
++{
++	dentry->d_fsdata = NULL;
++}
++#else
++AuStubVoid(au_hn_di_reinit, struct dentry *dentry __maybe_unused)
++#endif /* CONFIG_AUFS_HNOTIFY */
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DENTRY_H__ */
+diff -Nurp linux-5.4/fs/aufs/dinfo.c linux-5.4-aufs/fs/aufs/dinfo.c
+--- linux-5.4/fs/aufs/dinfo.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dinfo.c	2019-11-28 01:25:59.063925618 +0200
+@@ -0,0 +1,541 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * dentry private data
++ */
++
++#include "aufs.h"
++
++void au_di_init_once(void *_dinfo)
++{
++	struct au_dinfo *dinfo = _dinfo;
++
++	au_rw_init(&dinfo->di_rwsem);
++}
++
++struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
++{
++	struct au_dinfo *dinfo;
++	int nbr, i;
++
++	dinfo = au_cache_alloc_dinfo();
++	if (unlikely(!dinfo))
++		goto out;
++
++	nbr = au_sbbot(sb) + 1;
++	if (nbr <= 0)
++		nbr = 1;
++	dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS);
++	if (dinfo->di_hdentry) {
++		au_rw_write_lock_nested(&dinfo->di_rwsem, lsc);
++		dinfo->di_btop = -1;
++		dinfo->di_bbot = -1;
++		dinfo->di_bwh = -1;
++		dinfo->di_bdiropq = -1;
++		dinfo->di_tmpfile = 0;
++		for (i = 0; i < nbr; i++)
++			dinfo->di_hdentry[i].hd_id = -1;
++		goto out;
++	}
++
++	au_cache_free_dinfo(dinfo);
++	dinfo = NULL;
++
++out:
++	return dinfo;
++}
++
++void au_di_free(struct au_dinfo *dinfo)
++{
++	struct au_hdentry *p;
++	aufs_bindex_t bbot, bindex;
++
++	/* dentry may not be revalidated */
++	bindex = dinfo->di_btop;
++	if (bindex >= 0) {
++		bbot = dinfo->di_bbot;
++		p = au_hdentry(dinfo, bindex);
++		while (bindex++ <= bbot)
++			au_hdput(p++);
++	}
++	au_kfree_try_rcu(dinfo->di_hdentry);
++	au_cache_free_dinfo(dinfo);
++}
++
++void au_di_swap(struct au_dinfo *a, struct au_dinfo *b)
++{
++	struct au_hdentry *p;
++	aufs_bindex_t bi;
++
++	AuRwMustWriteLock(&a->di_rwsem);
++	AuRwMustWriteLock(&b->di_rwsem);
++
++#define DiSwap(v, name)				\
++	do {					\
++		v = a->di_##name;		\
++		a->di_##name = b->di_##name;	\
++		b->di_##name = v;		\
++	} while (0)
++
++	DiSwap(p, hdentry);
++	DiSwap(bi, btop);
++	DiSwap(bi, bbot);
++	DiSwap(bi, bwh);
++	DiSwap(bi, bdiropq);
++	/* smp_mb(); */
++
++#undef DiSwap
++}
++
++void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src)
++{
++	AuRwMustWriteLock(&dst->di_rwsem);
++	AuRwMustWriteLock(&src->di_rwsem);
++
++	dst->di_btop = src->di_btop;
++	dst->di_bbot = src->di_bbot;
++	dst->di_bwh = src->di_bwh;
++	dst->di_bdiropq = src->di_bdiropq;
++	/* smp_mb(); */
++}
++
++int au_di_init(struct dentry *dentry)
++{
++	int err;
++	struct super_block *sb;
++	struct au_dinfo *dinfo;
++
++	err = 0;
++	sb = dentry->d_sb;
++	dinfo = au_di_alloc(sb, AuLsc_DI_CHILD);
++	if (dinfo) {
++		atomic_set(&dinfo->di_generation, au_sigen(sb));
++		/* smp_mb(); */ /* atomic_set */
++		dentry->d_fsdata = dinfo;
++	} else
++		err = -ENOMEM;
++
++	return err;
++}
++
++void au_di_fin(struct dentry *dentry)
++{
++	struct au_dinfo *dinfo;
++
++	dinfo = au_di(dentry);
++	AuRwDestroy(&dinfo->di_rwsem);
++	au_di_free(dinfo);
++}
++
++int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink)
++{
++	int err, sz;
++	struct au_hdentry *hdp;
++
++	AuRwMustWriteLock(&dinfo->di_rwsem);
++
++	err = -ENOMEM;
++	sz = sizeof(*hdp) * (dinfo->di_bbot + 1);
++	if (!sz)
++		sz = sizeof(*hdp);
++	hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS,
++			   may_shrink);
++	if (hdp) {
++		dinfo->di_hdentry = hdp;
++		err = 0;
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void do_ii_write_lock(struct inode *inode, unsigned int lsc)
++{
++	switch (lsc) {
++	case AuLsc_DI_CHILD:
++		ii_write_lock_child(inode);
++		break;
++	case AuLsc_DI_CHILD2:
++		ii_write_lock_child2(inode);
++		break;
++	case AuLsc_DI_CHILD3:
++		ii_write_lock_child3(inode);
++		break;
++	case AuLsc_DI_PARENT:
++		ii_write_lock_parent(inode);
++		break;
++	case AuLsc_DI_PARENT2:
++		ii_write_lock_parent2(inode);
++		break;
++	case AuLsc_DI_PARENT3:
++		ii_write_lock_parent3(inode);
++		break;
++	default:
++		BUG();
++	}
++}
++
++static void do_ii_read_lock(struct inode *inode, unsigned int lsc)
++{
++	switch (lsc) {
++	case AuLsc_DI_CHILD:
++		ii_read_lock_child(inode);
++		break;
++	case AuLsc_DI_CHILD2:
++		ii_read_lock_child2(inode);
++		break;
++	case AuLsc_DI_CHILD3:
++		ii_read_lock_child3(inode);
++		break;
++	case AuLsc_DI_PARENT:
++		ii_read_lock_parent(inode);
++		break;
++	case AuLsc_DI_PARENT2:
++		ii_read_lock_parent2(inode);
++		break;
++	case AuLsc_DI_PARENT3:
++		ii_read_lock_parent3(inode);
++		break;
++	default:
++		BUG();
++	}
++}
++
++void di_read_lock(struct dentry *d, int flags, unsigned int lsc)
++{
++	struct inode *inode;
++
++	au_rw_read_lock_nested(&au_di(d)->di_rwsem, lsc);
++	if (d_really_is_positive(d)) {
++		inode = d_inode(d);
++		if (au_ftest_lock(flags, IW))
++			do_ii_write_lock(inode, lsc);
++		else if (au_ftest_lock(flags, IR))
++			do_ii_read_lock(inode, lsc);
++	}
++}
++
++void di_read_unlock(struct dentry *d, int flags)
++{
++	struct inode *inode;
++
++	if (d_really_is_positive(d)) {
++		inode = d_inode(d);
++		if (au_ftest_lock(flags, IW)) {
++			au_dbg_verify_dinode(d);
++			ii_write_unlock(inode);
++		} else if (au_ftest_lock(flags, IR)) {
++			au_dbg_verify_dinode(d);
++			ii_read_unlock(inode);
++		}
++	}
++	au_rw_read_unlock(&au_di(d)->di_rwsem);
++}
++
++void di_downgrade_lock(struct dentry *d, int flags)
++{
++	if (d_really_is_positive(d) && au_ftest_lock(flags, IR))
++		ii_downgrade_lock(d_inode(d));
++	au_rw_dgrade_lock(&au_di(d)->di_rwsem);
++}
++
++void di_write_lock(struct dentry *d, unsigned int lsc)
++{
++	au_rw_write_lock_nested(&au_di(d)->di_rwsem, lsc);
++	if (d_really_is_positive(d))
++		do_ii_write_lock(d_inode(d), lsc);
++}
++
++void di_write_unlock(struct dentry *d)
++{
++	au_dbg_verify_dinode(d);
++	if (d_really_is_positive(d))
++		ii_write_unlock(d_inode(d));
++	au_rw_write_unlock(&au_di(d)->di_rwsem);
++}
++
++void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir)
++{
++	AuDebugOn(d1 == d2
++		  || d_inode(d1) == d_inode(d2)
++		  || d1->d_sb != d2->d_sb);
++
++	if ((isdir && au_test_subdir(d1, d2))
++	    || d1 < d2) {
++		di_write_lock_child(d1);
++		di_write_lock_child2(d2);
++	} else {
++		di_write_lock_child(d2);
++		di_write_lock_child2(d1);
++	}
++}
++
++void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir)
++{
++	AuDebugOn(d1 == d2
++		  || d_inode(d1) == d_inode(d2)
++		  || d1->d_sb != d2->d_sb);
++
++	if ((isdir && au_test_subdir(d1, d2))
++	    || d1 < d2) {
++		di_write_lock_parent(d1);
++		di_write_lock_parent2(d2);
++	} else {
++		di_write_lock_parent(d2);
++		di_write_lock_parent2(d1);
++	}
++}
++
++void di_write_unlock2(struct dentry *d1, struct dentry *d2)
++{
++	di_write_unlock(d1);
++	if (d_inode(d1) == d_inode(d2))
++		au_rw_write_unlock(&au_di(d2)->di_rwsem);
++	else
++		di_write_unlock(d2);
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	struct dentry *d;
++
++	DiMustAnyLock(dentry);
++
++	if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
++		return NULL;
++	AuDebugOn(bindex < 0);
++	d = au_hdentry(au_di(dentry), bindex)->hd_dentry;
++	AuDebugOn(d && au_dcount(d) <= 0);
++	return d;
++}
++
++/*
++ * extended version of au_h_dptr().
++ * returns a hashed and positive (or linkable) h_dentry in bindex, NULL, or
++ * error.
++ */
++struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	struct dentry *h_dentry;
++	struct inode *inode, *h_inode;
++
++	AuDebugOn(d_really_is_negative(dentry));
++
++	h_dentry = NULL;
++	if (au_dbtop(dentry) <= bindex
++	    && bindex <= au_dbbot(dentry))
++		h_dentry = au_h_dptr(dentry, bindex);
++	if (h_dentry && !au_d_linkable(h_dentry)) {
++		dget(h_dentry);
++		goto out; /* success */
++	}
++
++	inode = d_inode(dentry);
++	AuDebugOn(bindex < au_ibtop(inode));
++	AuDebugOn(au_ibbot(inode) < bindex);
++	h_inode = au_h_iptr(inode, bindex);
++	h_dentry = d_find_alias(h_inode);
++	if (h_dentry) {
++		if (!IS_ERR(h_dentry)) {
++			if (!au_d_linkable(h_dentry))
++				goto out; /* success */
++			dput(h_dentry);
++		} else
++			goto out;
++	}
++
++	if (au_opt_test(au_mntflags(dentry->d_sb), PLINK)) {
++		h_dentry = au_plink_lkup(inode, bindex);
++		AuDebugOn(!h_dentry);
++		if (!IS_ERR(h_dentry)) {
++			if (!au_d_hashed_positive(h_dentry))
++				goto out; /* success */
++			dput(h_dentry);
++			h_dentry = NULL;
++		}
++	}
++
++out:
++	AuDbgDentry(h_dentry);
++	return h_dentry;
++}
++
++aufs_bindex_t au_dbtail(struct dentry *dentry)
++{
++	aufs_bindex_t bbot, bwh;
++
++	bbot = au_dbbot(dentry);
++	if (0 <= bbot) {
++		bwh = au_dbwh(dentry);
++		if (!bwh)
++			return bwh;
++		if (0 < bwh && bwh < bbot)
++			return bwh - 1;
++	}
++	return bbot;
++}
++
++aufs_bindex_t au_dbtaildir(struct dentry *dentry)
++{
++	aufs_bindex_t bbot, bopq;
++
++	bbot = au_dbtail(dentry);
++	if (0 <= bbot) {
++		bopq = au_dbdiropq(dentry);
++		if (0 <= bopq && bopq < bbot)
++			bbot = bopq;
++	}
++	return bbot;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
++		   struct dentry *h_dentry)
++{
++	struct au_dinfo *dinfo;
++	struct au_hdentry *hd;
++	struct au_branch *br;
++
++	DiMustWriteLock(dentry);
++
++	dinfo = au_di(dentry);
++	hd = au_hdentry(dinfo, bindex);
++	au_hdput(hd);
++	hd->hd_dentry = h_dentry;
++	if (h_dentry) {
++		br = au_sbr(dentry->d_sb, bindex);
++		hd->hd_id = br->br_id;
++	}
++}
++
++int au_dbrange_test(struct dentry *dentry)
++{
++	int err;
++	aufs_bindex_t btop, bbot;
++
++	err = 0;
++	btop = au_dbtop(dentry);
++	bbot = au_dbbot(dentry);
++	if (btop >= 0)
++		AuDebugOn(bbot < 0 && btop > bbot);
++	else {
++		err = -EIO;
++		AuDebugOn(bbot >= 0);
++	}
++
++	return err;
++}
++
++int au_digen_test(struct dentry *dentry, unsigned int sigen)
++{
++	int err;
++
++	err = 0;
++	if (unlikely(au_digen(dentry) != sigen
++		     || au_iigen_test(d_inode(dentry), sigen)))
++		err = -EIO;
++
++	return err;
++}
++
++void au_update_digen(struct dentry *dentry)
++{
++	atomic_set(&au_di(dentry)->di_generation, au_sigen(dentry->d_sb));
++	/* smp_mb(); */ /* atomic_set */
++}
++
++void au_update_dbrange(struct dentry *dentry, int do_put_zero)
++{
++	struct au_dinfo *dinfo;
++	struct dentry *h_d;
++	struct au_hdentry *hdp;
++	aufs_bindex_t bindex, bbot;
++
++	DiMustWriteLock(dentry);
++
++	dinfo = au_di(dentry);
++	if (!dinfo || dinfo->di_btop < 0)
++		return;
++
++	if (do_put_zero) {
++		bbot = dinfo->di_bbot;
++		bindex = dinfo->di_btop;
++		hdp = au_hdentry(dinfo, bindex);
++		for (; bindex <= bbot; bindex++, hdp++) {
++			h_d = hdp->hd_dentry;
++			if (h_d && d_is_negative(h_d))
++				au_set_h_dptr(dentry, bindex, NULL);
++		}
++	}
++
++	dinfo->di_btop = 0;
++	hdp = au_hdentry(dinfo, dinfo->di_btop);
++	for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++)
++		if (hdp->hd_dentry)
++			break;
++	if (dinfo->di_btop > dinfo->di_bbot) {
++		dinfo->di_btop = -1;
++		dinfo->di_bbot = -1;
++		return;
++	}
++
++	hdp = au_hdentry(dinfo, dinfo->di_bbot);
++	for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--)
++		if (hdp->hd_dentry)
++			break;
++	AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0);
++}
++
++void au_update_dbtop(struct dentry *dentry)
++{
++	aufs_bindex_t bindex, bbot;
++	struct dentry *h_dentry;
++
++	bbot = au_dbbot(dentry);
++	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++		if (d_is_positive(h_dentry)) {
++			au_set_dbtop(dentry, bindex);
++			return;
++		}
++		au_set_h_dptr(dentry, bindex, NULL);
++	}
++}
++
++void au_update_dbbot(struct dentry *dentry)
++{
++	aufs_bindex_t bindex, btop;
++	struct dentry *h_dentry;
++
++	btop = au_dbtop(dentry);
++	for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++		if (d_is_positive(h_dentry)) {
++			au_set_dbbot(dentry, bindex);
++			return;
++		}
++		au_set_h_dptr(dentry, bindex, NULL);
++	}
++}
++
++int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry)
++{
++	aufs_bindex_t bindex, bbot;
++
++	bbot = au_dbbot(dentry);
++	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++)
++		if (au_h_dptr(dentry, bindex) == h_dentry)
++			return bindex;
++	return -1;
++}
+diff -Nurp linux-5.4/fs/aufs/dir.c linux-5.4-aufs/fs/aufs/dir.c
+--- linux-5.4/fs/aufs/dir.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dir.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,750 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * directory operations
++ */
++
++#include <linux/fs_stack.h>
++#include <linux/iversion.h>
++#include "aufs.h"
++
++void au_add_nlink(struct inode *dir, struct inode *h_dir)
++{
++	unsigned int nlink;
++
++	AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
++
++	nlink = dir->i_nlink;
++	nlink += h_dir->i_nlink - 2;
++	if (h_dir->i_nlink < 2)
++		nlink += 2;
++	smp_mb(); /* for i_nlink */
++	/* 0 can happen in revaliding */
++	set_nlink(dir, nlink);
++}
++
++void au_sub_nlink(struct inode *dir, struct inode *h_dir)
++{
++	unsigned int nlink;
++
++	AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
++
++	nlink = dir->i_nlink;
++	nlink -= h_dir->i_nlink - 2;
++	if (h_dir->i_nlink < 2)
++		nlink -= 2;
++	smp_mb(); /* for i_nlink */
++	/* nlink == 0 means the branch-fs is broken */
++	set_nlink(dir, nlink);
++}
++
++loff_t au_dir_size(struct file *file, struct dentry *dentry)
++{
++	loff_t sz;
++	aufs_bindex_t bindex, bbot;
++	struct file *h_file;
++	struct dentry *h_dentry;
++
++	sz = 0;
++	if (file) {
++		AuDebugOn(!d_is_dir(file->f_path.dentry));
++
++		bbot = au_fbbot_dir(file);
++		for (bindex = au_fbtop(file);
++		     bindex <= bbot && sz < KMALLOC_MAX_SIZE;
++		     bindex++) {
++			h_file = au_hf_dir(file, bindex);
++			if (h_file && file_inode(h_file))
++				sz += vfsub_f_size_read(h_file);
++		}
++	} else {
++		AuDebugOn(!dentry);
++		AuDebugOn(!d_is_dir(dentry));
++
++		bbot = au_dbtaildir(dentry);
++		for (bindex = au_dbtop(dentry);
++		     bindex <= bbot && sz < KMALLOC_MAX_SIZE;
++		     bindex++) {
++			h_dentry = au_h_dptr(dentry, bindex);
++			if (h_dentry && d_is_positive(h_dentry))
++				sz += i_size_read(d_inode(h_dentry));
++		}
++	}
++	if (sz < KMALLOC_MAX_SIZE)
++		sz = roundup_pow_of_two(sz);
++	if (sz > KMALLOC_MAX_SIZE)
++		sz = KMALLOC_MAX_SIZE;
++	else if (sz < NAME_MAX) {
++		BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX);
++		sz = AUFS_RDBLK_DEF;
++	}
++	return sz;
++}
++
++struct au_dir_ts_arg {
++	struct dentry *dentry;
++	aufs_bindex_t brid;
++};
++
++static void au_do_dir_ts(void *arg)
++{
++	struct au_dir_ts_arg *a = arg;
++	struct au_dtime dt;
++	struct path h_path;
++	struct inode *dir, *h_dir;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_hinode *hdir;
++	int err;
++	aufs_bindex_t btop, bindex;
++
++	sb = a->dentry->d_sb;
++	if (d_really_is_negative(a->dentry))
++		goto out;
++	/* no dir->i_mutex lock */
++	aufs_read_lock(a->dentry, AuLock_DW); /* noflush */
++
++	dir = d_inode(a->dentry);
++	btop = au_ibtop(dir);
++	bindex = au_br_index(sb, a->brid);
++	if (bindex < btop)
++		goto out_unlock;
++
++	br = au_sbr(sb, bindex);
++	h_path.dentry = au_h_dptr(a->dentry, bindex);
++	if (!h_path.dentry)
++		goto out_unlock;
++	h_path.mnt = au_br_mnt(br);
++	au_dtime_store(&dt, a->dentry, &h_path);
++
++	br = au_sbr(sb, btop);
++	if (!au_br_writable(br->br_perm))
++		goto out_unlock;
++	h_path.dentry = au_h_dptr(a->dentry, btop);
++	h_path.mnt = au_br_mnt(br);
++	err = vfsub_mnt_want_write(h_path.mnt);
++	if (err)
++		goto out_unlock;
++	hdir = au_hi(dir, btop);
++	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
++	h_dir = au_h_iptr(dir, btop);
++	if (h_dir->i_nlink
++	    && timespec64_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) {
++		dt.dt_h_path = h_path;
++		au_dtime_revert(&dt);
++	}
++	au_hn_inode_unlock(hdir);
++	vfsub_mnt_drop_write(h_path.mnt);
++	au_cpup_attr_timesizes(dir);
++
++out_unlock:
++	aufs_read_unlock(a->dentry, AuLock_DW);
++out:
++	dput(a->dentry);
++	au_nwt_done(&au_sbi(sb)->si_nowait);
++	au_kfree_try_rcu(arg);
++}
++
++void au_dir_ts(struct inode *dir, aufs_bindex_t bindex)
++{
++	int perm, wkq_err;
++	aufs_bindex_t btop;
++	struct au_dir_ts_arg *arg;
++	struct dentry *dentry;
++	struct super_block *sb;
++
++	IMustLock(dir);
++
++	dentry = d_find_any_alias(dir);
++	AuDebugOn(!dentry);
++	sb = dentry->d_sb;
++	btop = au_ibtop(dir);
++	if (btop == bindex) {
++		au_cpup_attr_timesizes(dir);
++		goto out;
++	}
++
++	perm = au_sbr_perm(sb, btop);
++	if (!au_br_writable(perm))
++		goto out;
++
++	arg = kmalloc(sizeof(*arg), GFP_NOFS);
++	if (!arg)
++		goto out;
++
++	arg->dentry = dget(dentry); /* will be dput-ted by au_do_dir_ts() */
++	arg->brid = au_sbr_id(sb, bindex);
++	wkq_err = au_wkq_nowait(au_do_dir_ts, arg, sb, /*flags*/0);
++	if (unlikely(wkq_err)) {
++		pr_err("wkq %d\n", wkq_err);
++		dput(dentry);
++		au_kfree_try_rcu(arg);
++	}
++
++out:
++	dput(dentry);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int reopen_dir(struct file *file)
++{
++	int err;
++	unsigned int flags;
++	aufs_bindex_t bindex, btail, btop;
++	struct dentry *dentry, *h_dentry;
++	struct file *h_file;
++
++	/* open all lower dirs */
++	dentry = file->f_path.dentry;
++	btop = au_dbtop(dentry);
++	for (bindex = au_fbtop(file); bindex < btop; bindex++)
++		au_set_h_fptr(file, bindex, NULL);
++	au_set_fbtop(file, btop);
++
++	btail = au_dbtaildir(dentry);
++	for (bindex = au_fbbot_dir(file); btail < bindex; bindex--)
++		au_set_h_fptr(file, bindex, NULL);
++	au_set_fbbot_dir(file, btail);
++
++	flags = vfsub_file_flags(file);
++	for (bindex = btop; bindex <= btail; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++		h_file = au_hf_dir(file, bindex);
++		if (h_file)
++			continue;
++
++		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
++		err = PTR_ERR(h_file);
++		if (IS_ERR(h_file))
++			goto out; /* close all? */
++		au_set_h_fptr(file, bindex, h_file);
++	}
++	au_update_figen(file);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++	err = 0;
++
++out:
++	return err;
++}
++
++static int do_open_dir(struct file *file, int flags, struct file *h_file)
++{
++	int err;
++	aufs_bindex_t bindex, btail;
++	struct dentry *dentry, *h_dentry;
++	struct vfsmount *mnt;
++
++	FiMustWriteLock(file);
++	AuDebugOn(h_file);
++
++	err = 0;
++	mnt = file->f_path.mnt;
++	dentry = file->f_path.dentry;
++	file->f_version = inode_query_iversion(d_inode(dentry));
++	bindex = au_dbtop(dentry);
++	au_set_fbtop(file, bindex);
++	btail = au_dbtaildir(dentry);
++	au_set_fbbot_dir(file, btail);
++	for (; !err && bindex <= btail; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (!h_dentry)
++			continue;
++
++		err = vfsub_test_mntns(mnt, h_dentry->d_sb);
++		if (unlikely(err))
++			break;
++		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
++		if (IS_ERR(h_file)) {
++			err = PTR_ERR(h_file);
++			break;
++		}
++		au_set_h_fptr(file, bindex, h_file);
++	}
++	au_update_figen(file);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++	if (!err)
++		return 0; /* success */
++
++	/* close all */
++	for (bindex = au_fbtop(file); bindex <= btail; bindex++)
++		au_set_h_fptr(file, bindex, NULL);
++	au_set_fbtop(file, -1);
++	au_set_fbbot_dir(file, -1);
++
++	return err;
++}
++
++static int aufs_open_dir(struct inode *inode __maybe_unused,
++			 struct file *file)
++{
++	int err;
++	struct super_block *sb;
++	struct au_fidir *fidir;
++
++	err = -ENOMEM;
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	fidir = au_fidir_alloc(sb);
++	if (fidir) {
++		struct au_do_open_args args = {
++			.open	= do_open_dir,
++			.fidir	= fidir
++		};
++		err = au_do_open(file, &args);
++		if (unlikely(err))
++			au_kfree_rcu(fidir);
++	}
++	si_read_unlock(sb);
++	return err;
++}
++
++static int aufs_release_dir(struct inode *inode __maybe_unused,
++			    struct file *file)
++{
++	struct au_vdir *vdir_cache;
++	struct au_finfo *finfo;
++	struct au_fidir *fidir;
++	struct au_hfile *hf;
++	aufs_bindex_t bindex, bbot;
++
++	finfo = au_fi(file);
++	fidir = finfo->fi_hdir;
++	if (fidir) {
++		au_hbl_del(&finfo->fi_hlist,
++			   &au_sbi(file->f_path.dentry->d_sb)->si_files);
++		vdir_cache = fidir->fd_vdir_cache; /* lock-free */
++		if (vdir_cache)
++			au_vdir_free(vdir_cache);
++
++		bindex = finfo->fi_btop;
++		if (bindex >= 0) {
++			hf = fidir->fd_hfile + bindex;
++			/*
++			 * calls fput() instead of filp_close(),
++			 * since no dnotify or lock for the lower file.
++			 */
++			bbot = fidir->fd_bbot;
++			for (; bindex <= bbot; bindex++, hf++)
++				if (hf->hf_file)
++					au_hfput(hf, /*execed*/0);
++		}
++		au_kfree_rcu(fidir);
++		finfo->fi_hdir = NULL;
++	}
++	au_finfo_fin(file);
++	return 0;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_do_flush_dir(struct file *file, fl_owner_t id)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct file *h_file;
++
++	err = 0;
++	bbot = au_fbbot_dir(file);
++	for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
++		h_file = au_hf_dir(file, bindex);
++		if (h_file)
++			err = vfsub_flush(h_file, id);
++	}
++	return err;
++}
++
++static int aufs_flush_dir(struct file *file, fl_owner_t id)
++{
++	return au_do_flush(file, id, au_do_flush_dir);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync)
++{
++	int err;
++	aufs_bindex_t bbot, bindex;
++	struct inode *inode;
++	struct super_block *sb;
++
++	err = 0;
++	sb = dentry->d_sb;
++	inode = d_inode(dentry);
++	IMustLock(inode);
++	bbot = au_dbbot(dentry);
++	for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) {
++		struct path h_path;
++
++		if (au_test_ro(sb, bindex, inode))
++			continue;
++		h_path.dentry = au_h_dptr(dentry, bindex);
++		if (!h_path.dentry)
++			continue;
++
++		h_path.mnt = au_sbr_mnt(sb, bindex);
++		err = vfsub_fsync(NULL, &h_path, datasync);
++	}
++
++	return err;
++}
++
++static int au_do_fsync_dir(struct file *file, int datasync)
++{
++	int err;
++	aufs_bindex_t bbot, bindex;
++	struct file *h_file;
++	struct super_block *sb;
++	struct inode *inode;
++
++	err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
++	if (unlikely(err))
++		goto out;
++
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	bbot = au_fbbot_dir(file);
++	for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
++		h_file = au_hf_dir(file, bindex);
++		if (!h_file || au_test_ro(sb, bindex, inode))
++			continue;
++
++		err = vfsub_fsync(h_file, &h_file->f_path, datasync);
++	}
++
++out:
++	return err;
++}
++
++/*
++ * @file may be NULL
++ */
++static int aufs_fsync_dir(struct file *file, loff_t start, loff_t end,
++			  int datasync)
++{
++	int err;
++	struct dentry *dentry;
++	struct inode *inode;
++	struct super_block *sb;
++
++	err = 0;
++	dentry = file->f_path.dentry;
++	inode = d_inode(dentry);
++	inode_lock(inode);
++	sb = dentry->d_sb;
++	si_noflush_read_lock(sb);
++	if (file)
++		err = au_do_fsync_dir(file, datasync);
++	else {
++		di_write_lock_child(dentry);
++		err = au_do_fsync_dir_no_file(dentry, datasync);
++	}
++	au_cpup_attr_timesizes(inode);
++	di_write_unlock(dentry);
++	if (file)
++		fi_write_unlock(file);
++
++	si_read_unlock(sb);
++	inode_unlock(inode);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int aufs_iterate_shared(struct file *file, struct dir_context *ctx)
++{
++	int err;
++	struct dentry *dentry;
++	struct inode *inode, *h_inode;
++	struct super_block *sb;
++
++	AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
++
++	dentry = file->f_path.dentry;
++	inode = d_inode(dentry);
++	IMustLock(inode);
++
++	sb = dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
++	if (unlikely(err))
++		goto out;
++	err = au_alive_dir(dentry);
++	if (!err)
++		err = au_vdir_init(file);
++	di_downgrade_lock(dentry, AuLock_IR);
++	if (unlikely(err))
++		goto out_unlock;
++
++	h_inode = au_h_iptr(inode, au_ibtop(inode));
++	if (!au_test_nfsd()) {
++		err = au_vdir_fill_de(file, ctx);
++		fsstack_copy_attr_atime(inode, h_inode);
++	} else {
++		/*
++		 * nfsd filldir may call lookup_one_len(), vfs_getattr(),
++		 * encode_fh() and others.
++		 */
++		atomic_inc(&h_inode->i_count);
++		di_read_unlock(dentry, AuLock_IR);
++		si_read_unlock(sb);
++		err = au_vdir_fill_de(file, ctx);
++		fsstack_copy_attr_atime(inode, h_inode);
++		fi_write_unlock(file);
++		iput(h_inode);
++
++		AuTraceErr(err);
++		return err;
++	}
++
++out_unlock:
++	di_read_unlock(dentry, AuLock_IR);
++	fi_write_unlock(file);
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define AuTestEmpty_WHONLY	1
++#define AuTestEmpty_CALLED	(1 << 1)
++#define AuTestEmpty_SHWH	(1 << 2)
++#define au_ftest_testempty(flags, name)	((flags) & AuTestEmpty_##name)
++#define au_fset_testempty(flags, name) \
++	do { (flags) |= AuTestEmpty_##name; } while (0)
++#define au_fclr_testempty(flags, name) \
++	do { (flags) &= ~AuTestEmpty_##name; } while (0)
++
++#ifndef CONFIG_AUFS_SHWH
++#undef AuTestEmpty_SHWH
++#define AuTestEmpty_SHWH	0
++#endif
++
++struct test_empty_arg {
++	struct dir_context ctx;
++	struct au_nhash *whlist;
++	unsigned int flags;
++	int err;
++	aufs_bindex_t bindex;
++};
++
++static int test_empty_cb(struct dir_context *ctx, const char *__name,
++			 int namelen, loff_t offset __maybe_unused, u64 ino,
++			 unsigned int d_type)
++{
++	struct test_empty_arg *arg = container_of(ctx, struct test_empty_arg,
++						  ctx);
++	char *name = (void *)__name;
++
++	arg->err = 0;
++	au_fset_testempty(arg->flags, CALLED);
++	/* smp_mb(); */
++	if (name[0] == '.'
++	    && (namelen == 1 || (name[1] == '.' && namelen == 2)))
++		goto out; /* success */
++
++	if (namelen <= AUFS_WH_PFX_LEN
++	    || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
++		if (au_ftest_testempty(arg->flags, WHONLY)
++		    && !au_nhash_test_known_wh(arg->whlist, name, namelen))
++			arg->err = -ENOTEMPTY;
++		goto out;
++	}
++
++	name += AUFS_WH_PFX_LEN;
++	namelen -= AUFS_WH_PFX_LEN;
++	if (!au_nhash_test_known_wh(arg->whlist, name, namelen))
++		arg->err = au_nhash_append_wh
++			(arg->whlist, name, namelen, ino, d_type, arg->bindex,
++			 au_ftest_testempty(arg->flags, SHWH));
++
++out:
++	/* smp_mb(); */
++	AuTraceErr(arg->err);
++	return arg->err;
++}
++
++static int do_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
++{
++	int err;
++	struct file *h_file;
++	struct au_branch *br;
++
++	h_file = au_h_open(dentry, arg->bindex,
++			   O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_LARGEFILE,
++			   /*file*/NULL, /*force_wr*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = 0;
++	if (!au_opt_test(au_mntflags(dentry->d_sb), UDBA_NONE)
++	    && !file_inode(h_file)->i_nlink)
++		goto out_put;
++
++	do {
++		arg->err = 0;
++		au_fclr_testempty(arg->flags, CALLED);
++		/* smp_mb(); */
++		err = vfsub_iterate_dir(h_file, &arg->ctx);
++		if (err >= 0)
++			err = arg->err;
++	} while (!err && au_ftest_testempty(arg->flags, CALLED));
++
++out_put:
++	fput(h_file);
++	br = au_sbr(dentry->d_sb, arg->bindex);
++	au_lcnt_dec(&br->br_nfiles);
++out:
++	return err;
++}
++
++struct do_test_empty_args {
++	int *errp;
++	struct dentry *dentry;
++	struct test_empty_arg *arg;
++};
++
++static void call_do_test_empty(void *args)
++{
++	struct do_test_empty_args *a = args;
++	*a->errp = do_test_empty(a->dentry, a->arg);
++}
++
++static int sio_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
++{
++	int err, wkq_err;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++
++	h_dentry = au_h_dptr(dentry, arg->bindex);
++	h_inode = d_inode(h_dentry);
++	/* todo: i_mode changes anytime? */
++	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
++	err = au_test_h_perm_sio(h_inode, MAY_EXEC | MAY_READ);
++	inode_unlock_shared(h_inode);
++	if (!err)
++		err = do_test_empty(dentry, arg);
++	else {
++		struct do_test_empty_args args = {
++			.errp	= &err,
++			.dentry	= dentry,
++			.arg	= arg
++		};
++		unsigned int flags = arg->flags;
++
++		wkq_err = au_wkq_wait(call_do_test_empty, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++		arg->flags = flags;
++	}
++
++	return err;
++}
++
++int au_test_empty_lower(struct dentry *dentry)
++{
++	int err;
++	unsigned int rdhash;
++	aufs_bindex_t bindex, btop, btail;
++	struct au_nhash whlist;
++	struct test_empty_arg arg = {
++		.ctx = {
++			.actor = test_empty_cb
++		}
++	};
++	int (*test_empty)(struct dentry *dentry, struct test_empty_arg *arg);
++
++	SiMustAnyLock(dentry->d_sb);
++
++	rdhash = au_sbi(dentry->d_sb)->si_rdhash;
++	if (!rdhash)
++		rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, dentry));
++	err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++
++	arg.flags = 0;
++	arg.whlist = &whlist;
++	btop = au_dbtop(dentry);
++	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
++		au_fset_testempty(arg.flags, SHWH);
++	test_empty = do_test_empty;
++	if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1))
++		test_empty = sio_test_empty;
++	arg.bindex = btop;
++	err = test_empty(dentry, &arg);
++	if (unlikely(err))
++		goto out_whlist;
++
++	au_fset_testempty(arg.flags, WHONLY);
++	btail = au_dbtaildir(dentry);
++	for (bindex = btop + 1; !err && bindex <= btail; bindex++) {
++		struct dentry *h_dentry;
++
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (h_dentry && d_is_positive(h_dentry)) {
++			arg.bindex = bindex;
++			err = test_empty(dentry, &arg);
++		}
++	}
++
++out_whlist:
++	au_nhash_wh_free(&whlist);
++out:
++	return err;
++}
++
++int au_test_empty(struct dentry *dentry, struct au_nhash *whlist)
++{
++	int err;
++	struct test_empty_arg arg = {
++		.ctx = {
++			.actor = test_empty_cb
++		}
++	};
++	aufs_bindex_t bindex, btail;
++
++	err = 0;
++	arg.whlist = whlist;
++	arg.flags = AuTestEmpty_WHONLY;
++	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
++		au_fset_testempty(arg.flags, SHWH);
++	btail = au_dbtaildir(dentry);
++	for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) {
++		struct dentry *h_dentry;
++
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (h_dentry && d_is_positive(h_dentry)) {
++			arg.bindex = bindex;
++			err = sio_test_empty(dentry, &arg);
++		}
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++const struct file_operations aufs_dir_fop = {
++	.owner		= THIS_MODULE,
++	.llseek		= default_llseek,
++	.read		= generic_read_dir,
++	.iterate_shared	= aufs_iterate_shared,
++	.unlocked_ioctl	= aufs_ioctl_dir,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl	= aufs_compat_ioctl_dir,
++#endif
++	.open		= aufs_open_dir,
++	.release	= aufs_release_dir,
++	.flush		= aufs_flush_dir,
++	.fsync		= aufs_fsync_dir
++};
+diff -Nurp linux-5.4/fs/aufs/dir.h linux-5.4-aufs/fs/aufs/dir.h
+--- linux-5.4/fs/aufs/dir.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dir.h	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,121 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * directory operations
++ */
++
++#ifndef __AUFS_DIR_H__
++#define __AUFS_DIR_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fs.h>
++
++/* ---------------------------------------------------------------------- */
++
++/* need to be faster and smaller */
++
++struct au_nhash {
++	unsigned int		nh_num;
++	struct hlist_head	*nh_head;
++};
++
++struct au_vdir_destr {
++	unsigned char	len;
++	unsigned char	name[0];
++} __packed;
++
++struct au_vdir_dehstr {
++	struct hlist_node	hash;
++	struct au_vdir_destr	*str;
++	struct rcu_head		rcu;
++} ____cacheline_aligned_in_smp;
++
++struct au_vdir_de {
++	ino_t			de_ino;
++	unsigned char		de_type;
++	/* caution: packed */
++	struct au_vdir_destr	de_str;
++} __packed;
++
++struct au_vdir_wh {
++	struct hlist_node	wh_hash;
++#ifdef CONFIG_AUFS_SHWH
++	ino_t			wh_ino;
++	aufs_bindex_t		wh_bindex;
++	unsigned char		wh_type;
++#else
++	aufs_bindex_t		wh_bindex;
++#endif
++	/* caution: packed */
++	struct au_vdir_destr	wh_str;
++} __packed;
++
++union au_vdir_deblk_p {
++	unsigned char		*deblk;
++	struct au_vdir_de	*de;
++};
++
++struct au_vdir {
++	unsigned char	**vd_deblk;
++	unsigned long	vd_nblk;
++	struct {
++		unsigned long		ul;
++		union au_vdir_deblk_p	p;
++	} vd_last;
++
++	u64		vd_version;
++	unsigned int	vd_deblk_sz;
++	unsigned long	vd_jiffy;
++	struct rcu_head	rcu;
++} ____cacheline_aligned_in_smp;
++
++/* ---------------------------------------------------------------------- */
++
++/* dir.c */
++extern const struct file_operations aufs_dir_fop;
++void au_add_nlink(struct inode *dir, struct inode *h_dir);
++void au_sub_nlink(struct inode *dir, struct inode *h_dir);
++loff_t au_dir_size(struct file *file, struct dentry *dentry);
++void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc);
++int au_test_empty_lower(struct dentry *dentry);
++int au_test_empty(struct dentry *dentry, struct au_nhash *whlist);
++
++/* vdir.c */
++unsigned int au_rdhash_est(loff_t sz);
++int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp);
++void au_nhash_wh_free(struct au_nhash *whlist);
++int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
++			    int limit);
++int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen);
++int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
++		       unsigned int d_type, aufs_bindex_t bindex,
++		       unsigned char shwh);
++void au_vdir_free(struct au_vdir *vdir);
++int au_vdir_init(struct file *file);
++int au_vdir_fill_de(struct file *file, struct dir_context *ctx);
++
++/* ioctl.c */
++long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg);
++
++#ifdef CONFIG_AUFS_RDU
++/* rdu.c */
++long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++#ifdef CONFIG_COMPAT
++long au_rdu_compat_ioctl(struct file *file, unsigned int cmd,
++			 unsigned long arg);
++#endif
++#else
++AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file,
++       unsigned int cmd, unsigned long arg)
++#ifdef CONFIG_COMPAT
++AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file,
++       unsigned int cmd, unsigned long arg)
++#endif
++#endif
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DIR_H__ */
+diff -Nurp linux-5.4/fs/aufs/dirren.c linux-5.4-aufs/fs/aufs/dirren.c
+--- linux-5.4/fs/aufs/dirren.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dirren.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,1303 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2017-2019 Junjiro R. Okajima
++ */
++
++/*
++ * special handling in renaming a directory
++ * in order to support looking-up the before-renamed name on the lower readonly
++ * branches
++ */
++
++#include <linux/byteorder/generic.h>
++#include "aufs.h"
++
++static void au_dr_hino_del(struct au_dr_br *dr, struct au_dr_hino *ent)
++{
++	int idx;
++
++	idx = au_dr_ihash(ent->dr_h_ino);
++	au_hbl_del(&ent->dr_hnode, dr->dr_h_ino + idx);
++}
++
++static int au_dr_hino_test_empty(struct au_dr_br *dr)
++{
++	int ret, i;
++	struct hlist_bl_head *hbl;
++
++	ret = 1;
++	for (i = 0; ret && i < AuDirren_NHASH; i++) {
++		hbl = dr->dr_h_ino + i;
++		hlist_bl_lock(hbl);
++		ret &= hlist_bl_empty(hbl);
++		hlist_bl_unlock(hbl);
++	}
++
++	return ret;
++}
++
++static struct au_dr_hino *au_dr_hino_find(struct au_dr_br *dr, ino_t ino)
++{
++	struct au_dr_hino *found, *ent;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	int idx;
++
++	found = NULL;
++	idx = au_dr_ihash(ino);
++	hbl = dr->dr_h_ino + idx;
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
++		if (ent->dr_h_ino == ino) {
++			found = ent;
++			break;
++		}
++	hlist_bl_unlock(hbl);
++
++	return found;
++}
++
++int au_dr_hino_test_add(struct au_dr_br *dr, ino_t ino,
++			struct au_dr_hino *add_ent)
++{
++	int found, idx;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_dr_hino *ent;
++
++	found = 0;
++	idx = au_dr_ihash(ino);
++	hbl = dr->dr_h_ino + idx;
++#if 0
++	{
++		struct hlist_bl_node *tmp;
++
++		hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
++			AuDbg("hi%llu\n", (unsigned long long)ent->dr_h_ino);
++	}
++#endif
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
++		if (ent->dr_h_ino == ino) {
++			found = 1;
++			break;
++		}
++	if (!found && add_ent)
++		hlist_bl_add_head(&add_ent->dr_hnode, hbl);
++	hlist_bl_unlock(hbl);
++
++	if (!found && add_ent)
++		AuDbg("i%llu added\n", (unsigned long long)add_ent->dr_h_ino);
++
++	return found;
++}
++
++void au_dr_hino_free(struct au_dr_br *dr)
++{
++	int i;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos, *tmp;
++	struct au_dr_hino *ent;
++
++	/* SiMustWriteLock(sb); */
++
++	for (i = 0; i < AuDirren_NHASH; i++) {
++		hbl = dr->dr_h_ino + i;
++		/* no spinlock since sbinfo must be write-locked */
++		hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
++			au_kfree_rcu(ent);
++		INIT_HLIST_BL_HEAD(hbl);
++	}
++}
++
++/* returns the number of inodes or an error */
++static int au_dr_hino_store(struct super_block *sb, struct au_branch *br,
++			    struct file *hinofile)
++{
++	int err, i;
++	ssize_t ssz;
++	loff_t pos, oldsize;
++	__be64 u64;
++	struct inode *hinoinode;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *n1, *n2;
++	struct au_dr_hino *ent;
++
++	SiMustWriteLock(sb);
++	AuDebugOn(!au_br_writable(br->br_perm));
++
++	hinoinode = file_inode(hinofile);
++	oldsize = i_size_read(hinoinode);
++
++	err = 0;
++	pos = 0;
++	hbl = br->br_dirren.dr_h_ino;
++	for (i = 0; !err && i < AuDirren_NHASH; i++, hbl++) {
++		/* no bit-lock since sbinfo must be write-locked */
++		hlist_bl_for_each_entry_safe(ent, n1, n2, hbl, dr_hnode) {
++			AuDbg("hi%llu, %pD2\n",
++			      (unsigned long long)ent->dr_h_ino, hinofile);
++			u64 = cpu_to_be64(ent->dr_h_ino);
++			ssz = vfsub_write_k(hinofile, &u64, sizeof(u64), &pos);
++			if (ssz == sizeof(u64))
++				continue;
++
++			/* write error */
++			pr_err("ssz %zd, %pD2\n", ssz, hinofile);
++			err = -ENOSPC;
++			if (ssz < 0)
++				err = ssz;
++			break;
++		}
++	}
++	/* regardless the error */
++	if (pos < oldsize) {
++		err = vfsub_trunc(&hinofile->f_path, pos, /*attr*/0, hinofile);
++		AuTraceErr(err);
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_dr_hino_load(struct au_dr_br *dr, struct file *hinofile)
++{
++	int err, hidx;
++	ssize_t ssz;
++	size_t sz, n;
++	loff_t pos;
++	uint64_t u64;
++	struct au_dr_hino *ent;
++	struct inode *hinoinode;
++	struct hlist_bl_head *hbl;
++
++	err = 0;
++	pos = 0;
++	hbl = dr->dr_h_ino;
++	hinoinode = file_inode(hinofile);
++	sz = i_size_read(hinoinode);
++	AuDebugOn(sz % sizeof(u64));
++	n = sz / sizeof(u64);
++	while (n--) {
++		ssz = vfsub_read_k(hinofile, &u64, sizeof(u64), &pos);
++		if (unlikely(ssz != sizeof(u64))) {
++			pr_err("ssz %zd, %pD2\n", ssz, hinofile);
++			err = -EINVAL;
++			if (ssz < 0)
++				err = ssz;
++			goto out_free;
++		}
++
++		ent = kmalloc(sizeof(*ent), GFP_NOFS);
++		if (!ent) {
++			err = -ENOMEM;
++			AuTraceErr(err);
++			goto out_free;
++		}
++		ent->dr_h_ino = be64_to_cpu((__force __be64)u64);
++		AuDbg("hi%llu, %pD2\n",
++		      (unsigned long long)ent->dr_h_ino, hinofile);
++		hidx = au_dr_ihash(ent->dr_h_ino);
++		au_hbl_add(&ent->dr_hnode, hbl + hidx);
++	}
++	goto out; /* success */
++
++out_free:
++	au_dr_hino_free(dr);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * @bindex/@br is a switch to distinguish whether suspending hnotify or not.
++ * @path is a switch to distinguish load and store.
++ */
++static int au_dr_hino(struct super_block *sb, aufs_bindex_t bindex,
++		      struct au_branch *br, const struct path *path)
++{
++	int err, flags;
++	unsigned char load, suspend;
++	struct file *hinofile;
++	struct au_hinode *hdir;
++	struct inode *dir, *delegated;
++	struct path hinopath;
++	struct qstr hinoname = QSTR_INIT(AUFS_WH_DR_BRHINO,
++					 sizeof(AUFS_WH_DR_BRHINO) - 1);
++
++	AuDebugOn(bindex < 0 && !br);
++	AuDebugOn(bindex >= 0 && br);
++
++	err = -EINVAL;
++	suspend = !br;
++	if (suspend)
++		br = au_sbr(sb, bindex);
++	load = !!path;
++	if (!load) {
++		path = &br->br_path;
++		AuDebugOn(!au_br_writable(br->br_perm));
++		if (unlikely(!au_br_writable(br->br_perm)))
++			goto out;
++	}
++
++	hdir = NULL;
++	if (suspend) {
++		dir = d_inode(sb->s_root);
++		hdir = au_hinode(au_ii(dir), bindex);
++		dir = hdir->hi_inode;
++		au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
++	} else {
++		dir = d_inode(path->dentry);
++		inode_lock_nested(dir, AuLsc_I_CHILD);
++	}
++	hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry);
++	err = PTR_ERR(hinopath.dentry);
++	if (IS_ERR(hinopath.dentry))
++		goto out_unlock;
++
++	err = 0;
++	flags = O_RDONLY;
++	if (load) {
++		if (d_is_negative(hinopath.dentry))
++			goto out_dput; /* success */
++	} else {
++		if (au_dr_hino_test_empty(&br->br_dirren)) {
++			if (d_is_positive(hinopath.dentry)) {
++				delegated = NULL;
++				err = vfsub_unlink(dir, &hinopath, &delegated,
++						   /*force*/0);
++				AuTraceErr(err);
++				if (unlikely(err))
++					pr_err("ignored err %d, %pd2\n",
++					       err, hinopath.dentry);
++				if (unlikely(err == -EWOULDBLOCK))
++					iput(delegated);
++				err = 0;
++			}
++			goto out_dput;
++		} else if (!d_is_positive(hinopath.dentry)) {
++			err = vfsub_create(dir, &hinopath, 0600,
++					   /*want_excl*/false);
++			AuTraceErr(err);
++			if (unlikely(err))
++				goto out_dput;
++		}
++		flags = O_WRONLY;
++	}
++	hinopath.mnt = path->mnt;
++	hinofile = vfsub_dentry_open(&hinopath, flags);
++	if (suspend)
++		au_hn_inode_unlock(hdir);
++	else
++		inode_unlock(dir);
++	dput(hinopath.dentry);
++	AuTraceErrPtr(hinofile);
++	if (IS_ERR(hinofile)) {
++		err = PTR_ERR(hinofile);
++		goto out;
++	}
++
++	if (load)
++		err = au_dr_hino_load(&br->br_dirren, hinofile);
++	else
++		err = au_dr_hino_store(sb, br, hinofile);
++	fput(hinofile);
++	goto out;
++
++out_dput:
++	dput(hinopath.dentry);
++out_unlock:
++	if (suspend)
++		au_hn_inode_unlock(hdir);
++	else
++		inode_unlock(dir);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_dr_brid_init(struct au_dr_brid *brid, const struct path *path)
++{
++	int err;
++	struct kstatfs kstfs;
++	dev_t dev;
++	struct dentry *dentry;
++	struct super_block *sb;
++
++	err = vfs_statfs((void *)path, &kstfs);
++	AuTraceErr(err);
++	if (unlikely(err))
++		goto out;
++
++	/* todo: support for UUID */
++
++	if (kstfs.f_fsid.val[0] || kstfs.f_fsid.val[1]) {
++		brid->type = AuBrid_FSID;
++		brid->fsid = kstfs.f_fsid;
++	} else {
++		dentry = path->dentry;
++		sb = dentry->d_sb;
++		dev = sb->s_dev;
++		if (dev) {
++			brid->type = AuBrid_DEV;
++			brid->dev = dev;
++		}
++	}
++
++out:
++	return err;
++}
++
++int au_dr_br_init(struct super_block *sb, struct au_branch *br,
++		  const struct path *path)
++{
++	int err, i;
++	struct au_dr_br *dr;
++	struct hlist_bl_head *hbl;
++
++	dr = &br->br_dirren;
++	hbl = dr->dr_h_ino;
++	for (i = 0; i < AuDirren_NHASH; i++, hbl++)
++		INIT_HLIST_BL_HEAD(hbl);
++
++	err = au_dr_brid_init(&dr->dr_brid, path);
++	if (unlikely(err))
++		goto out;
++
++	if (au_opt_test(au_mntflags(sb), DIRREN))
++		err = au_dr_hino(sb, /*bindex*/-1, br, path);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_dr_br_fin(struct super_block *sb, struct au_branch *br)
++{
++	int err;
++
++	err = 0;
++	if (au_br_writable(br->br_perm))
++		err = au_dr_hino(sb, /*bindex*/-1, br, /*path*/NULL);
++	if (!err)
++		au_dr_hino_free(&br->br_dirren);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_brid_str(struct au_dr_brid *brid, struct inode *h_inode,
++		       char *buf, size_t sz)
++{
++	int err;
++	unsigned int major, minor;
++	char *p;
++
++	p = buf;
++	err = snprintf(p, sz, "%d_", brid->type);
++	AuDebugOn(err > sz);
++	p += err;
++	sz -= err;
++	switch (brid->type) {
++	case AuBrid_Unset:
++		return -EINVAL;
++	case AuBrid_UUID:
++		err = snprintf(p, sz, "%pU", brid->uuid.b);
++		break;
++	case AuBrid_FSID:
++		err = snprintf(p, sz, "%08x-%08x",
++			       brid->fsid.val[0], brid->fsid.val[1]);
++		break;
++	case AuBrid_DEV:
++		major = MAJOR(brid->dev);
++		minor = MINOR(brid->dev);
++		if (major <= 0xff && minor <= 0xff)
++			err = snprintf(p, sz, "%02x%02x", major, minor);
++		else
++			err = snprintf(p, sz, "%03x:%05x", major, minor);
++		break;
++	}
++	AuDebugOn(err > sz);
++	p += err;
++	sz -= err;
++	err = snprintf(p, sz, "_%llu", (unsigned long long)h_inode->i_ino);
++	AuDebugOn(err > sz);
++	p += err;
++	sz -= err;
++
++	return p - buf;
++}
++
++static int au_drinfo_name(struct au_branch *br, char *name, int len)
++{
++	int rlen;
++	struct dentry *br_dentry;
++	struct inode *br_inode;
++
++	br_dentry = au_br_dentry(br);
++	br_inode = d_inode(br_dentry);
++	rlen = au_brid_str(&br->br_dirren.dr_brid, br_inode, name, len);
++	AuDebugOn(rlen >= AUFS_DIRREN_ENV_VAL_SZ);
++	AuDebugOn(rlen > len);
++
++	return rlen;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * from the given @h_dentry, construct drinfo at @*fdata.
++ * when the size of @*fdata is not enough, reallocate and return new @fdata and
++ * @allocated.
++ */
++static int au_drinfo_construct(struct au_drinfo_fdata **fdata,
++			       struct dentry *h_dentry,
++			       unsigned char *allocated)
++{
++	int err, v;
++	struct au_drinfo_fdata *f, *p;
++	struct au_drinfo *drinfo;
++	struct inode *h_inode;
++	struct qstr *qname;
++
++	err = 0;
++	f = *fdata;
++	h_inode = d_inode(h_dentry);
++	qname = &h_dentry->d_name;
++	drinfo = &f->drinfo;
++	drinfo->ino = (__force uint64_t)cpu_to_be64(h_inode->i_ino);
++	drinfo->oldnamelen = qname->len;
++	if (*allocated < sizeof(*f) + qname->len) {
++		v = roundup_pow_of_two(*allocated + qname->len);
++		p = au_krealloc(f, v, GFP_NOFS, /*may_shrink*/0);
++		if (unlikely(!p)) {
++			err = -ENOMEM;
++			AuTraceErr(err);
++			goto out;
++		}
++		f = p;
++		*fdata = f;
++		*allocated = v;
++		drinfo = &f->drinfo;
++	}
++	memcpy(drinfo->oldname, qname->name, qname->len);
++	AuDbg("i%llu, %.*s\n",
++	      be64_to_cpu((__force __be64)drinfo->ino), drinfo->oldnamelen,
++	      drinfo->oldname);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* callers have to free the return value */
++static struct au_drinfo *au_drinfo_read_k(struct file *file, ino_t h_ino)
++{
++	struct au_drinfo *ret, *drinfo;
++	struct au_drinfo_fdata fdata;
++	int len;
++	loff_t pos;
++	ssize_t ssz;
++
++	ret = ERR_PTR(-EIO);
++	pos = 0;
++	ssz = vfsub_read_k(file, &fdata, sizeof(fdata), &pos);
++	if (unlikely(ssz != sizeof(fdata))) {
++		AuIOErr("ssz %zd, %u, %pD2\n",
++			ssz, (unsigned int)sizeof(fdata), file);
++		goto out;
++	}
++
++	fdata.magic = ntohl((__force __be32)fdata.magic);
++	switch (fdata.magic) {
++	case AUFS_DRINFO_MAGIC_V1:
++		break;
++	default:
++		AuIOErr("magic-num 0x%x, 0x%x, %pD2\n",
++			fdata.magic, AUFS_DRINFO_MAGIC_V1, file);
++		goto out;
++	}
++
++	drinfo = &fdata.drinfo;
++	len = drinfo->oldnamelen;
++	if (!len) {
++		AuIOErr("broken drinfo %pD2\n", file);
++		goto out;
++	}
++
++	ret = NULL;
++	drinfo->ino = be64_to_cpu((__force __be64)drinfo->ino);
++	if (unlikely(h_ino && drinfo->ino != h_ino)) {
++		AuDbg("ignored i%llu, i%llu, %pD2\n",
++		      (unsigned long long)drinfo->ino,
++		      (unsigned long long)h_ino, file);
++		goto out; /* success */
++	}
++
++	ret = kmalloc(sizeof(*ret) + len, GFP_NOFS);
++	if (unlikely(!ret)) {
++		ret = ERR_PTR(-ENOMEM);
++		AuTraceErrPtr(ret);
++		goto out;
++	}
++
++	*ret = *drinfo;
++	ssz = vfsub_read_k(file, (void *)ret->oldname, len, &pos);
++	if (unlikely(ssz != len)) {
++		au_kfree_rcu(ret);
++		ret = ERR_PTR(-EIO);
++		AuIOErr("ssz %zd, %u, %pD2\n", ssz, len, file);
++		goto out;
++	}
++
++	AuDbg("oldname %.*s\n", ret->oldnamelen, ret->oldname);
++
++out:
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* in order to be revertible */
++struct au_drinfo_rev_elm {
++	int			created;
++	struct dentry		*info_dentry;
++	struct au_drinfo	*info_last;
++};
++
++struct au_drinfo_rev {
++	unsigned char			already;
++	aufs_bindex_t			nelm;
++	struct au_drinfo_rev_elm	elm[0];
++};
++
++/* todo: isn't it too large? */
++struct au_drinfo_store {
++	struct path h_ppath;
++	struct dentry *h_dentry;
++	struct au_drinfo_fdata *fdata;
++	char *infoname;			/* inside of whname, just after PFX */
++	char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ];
++	aufs_bindex_t btgt, btail;
++	unsigned char no_sio,
++		allocated,		/* current size of *fdata */
++		infonamelen,		/* room size for p */
++		whnamelen,		/* length of the generated name */
++		renameback;		/* renamed back */
++};
++
++/* on rename(2) error, the caller should revert it using @elm */
++static int au_drinfo_do_store(struct au_drinfo_store *w,
++			      struct au_drinfo_rev_elm *elm)
++{
++	int err, len;
++	ssize_t ssz;
++	loff_t pos;
++	struct path infopath = {
++		.mnt = w->h_ppath.mnt
++	};
++	struct inode *h_dir, *h_inode, *delegated;
++	struct file *infofile;
++	struct qstr *qname;
++
++	AuDebugOn(elm
++		  && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm)));
++
++	infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry,
++					       w->whnamelen);
++	AuTraceErrPtr(infopath.dentry);
++	if (IS_ERR(infopath.dentry)) {
++		err = PTR_ERR(infopath.dentry);
++		goto out;
++	}
++
++	err = 0;
++	h_dir = d_inode(w->h_ppath.dentry);
++	if (elm && d_is_negative(infopath.dentry)) {
++		err = vfsub_create(h_dir, &infopath, 0600, /*want_excl*/true);
++		AuTraceErr(err);
++		if (unlikely(err))
++			goto out_dput;
++		elm->created = 1;
++		elm->info_dentry = dget(infopath.dentry);
++	}
++
++	infofile = vfsub_dentry_open(&infopath, O_RDWR);
++	AuTraceErrPtr(infofile);
++	if (IS_ERR(infofile)) {
++		err = PTR_ERR(infofile);
++		goto out_dput;
++	}
++
++	h_inode = d_inode(infopath.dentry);
++	if (elm && i_size_read(h_inode)) {
++		h_inode = d_inode(w->h_dentry);
++		elm->info_last = au_drinfo_read_k(infofile, h_inode->i_ino);
++		AuTraceErrPtr(elm->info_last);
++		if (IS_ERR(elm->info_last)) {
++			err = PTR_ERR(elm->info_last);
++			elm->info_last = NULL;
++			AuDebugOn(elm->info_dentry);
++			goto out_fput;
++		}
++	}
++
++	if (elm && w->renameback) {
++		delegated = NULL;
++		err = vfsub_unlink(h_dir, &infopath, &delegated, /*force*/0);
++		AuTraceErr(err);
++		if (unlikely(err == -EWOULDBLOCK))
++			iput(delegated);
++		goto out_fput;
++	}
++
++	pos = 0;
++	qname = &w->h_dentry->d_name;
++	len = sizeof(*w->fdata) + qname->len;
++	if (!elm)
++		len = sizeof(*w->fdata) + w->fdata->drinfo.oldnamelen;
++	ssz = vfsub_write_k(infofile, w->fdata, len, &pos);
++	if (ssz == len) {
++		AuDbg("hi%llu, %.*s\n", w->fdata->drinfo.ino,
++		      w->fdata->drinfo.oldnamelen, w->fdata->drinfo.oldname);
++		goto out_fput; /* success */
++	} else {
++		err = -EIO;
++		if (ssz < 0)
++			err = ssz;
++		/* the caller should revert it using @elm */
++	}
++
++out_fput:
++	fput(infofile);
++out_dput:
++	dput(infopath.dentry);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++struct au_call_drinfo_do_store_args {
++	int *errp;
++	struct au_drinfo_store *w;
++	struct au_drinfo_rev_elm *elm;
++};
++
++static void au_call_drinfo_do_store(void *args)
++{
++	struct au_call_drinfo_do_store_args *a = args;
++
++	*a->errp = au_drinfo_do_store(a->w, a->elm);
++}
++
++static int au_drinfo_store_sio(struct au_drinfo_store *w,
++			       struct au_drinfo_rev_elm *elm)
++{
++	int err, wkq_err;
++
++	if (w->no_sio)
++		err = au_drinfo_do_store(w, elm);
++	else {
++		struct au_call_drinfo_do_store_args a = {
++			.errp	= &err,
++			.w	= w,
++			.elm	= elm
++		};
++		wkq_err = au_wkq_wait(au_call_drinfo_do_store, &a);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++	AuTraceErr(err);
++
++	return err;
++}
++
++static int au_drinfo_store_work_init(struct au_drinfo_store *w,
++				     aufs_bindex_t btgt)
++{
++	int err;
++
++	memset(w, 0, sizeof(*w));
++	w->allocated = roundup_pow_of_two(sizeof(*w->fdata) + 40);
++	strcpy(w->whname, AUFS_WH_DR_INFO_PFX);
++	w->infoname = w->whname + sizeof(AUFS_WH_DR_INFO_PFX) - 1;
++	w->infonamelen = sizeof(w->whname) - sizeof(AUFS_WH_DR_INFO_PFX);
++	w->btgt = btgt;
++	w->no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
++
++	err = -ENOMEM;
++	w->fdata = kcalloc(1, w->allocated, GFP_NOFS);
++	if (unlikely(!w->fdata)) {
++		AuTraceErr(err);
++		goto out;
++	}
++	w->fdata->magic = (__force uint32_t)htonl(AUFS_DRINFO_MAGIC_V1);
++	err = 0;
++
++out:
++	return err;
++}
++
++static void au_drinfo_store_work_fin(struct au_drinfo_store *w)
++{
++	au_kfree_rcu(w->fdata);
++}
++
++static void au_drinfo_store_rev(struct au_drinfo_rev *rev,
++				struct au_drinfo_store *w)
++{
++	struct au_drinfo_rev_elm *elm;
++	struct inode *h_dir, *delegated;
++	int err, nelm;
++	struct path infopath = {
++		.mnt = w->h_ppath.mnt
++	};
++
++	h_dir = d_inode(w->h_ppath.dentry);
++	IMustLock(h_dir);
++
++	err = 0;
++	elm = rev->elm;
++	for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
++		AuDebugOn(elm->created && elm->info_last);
++		if (elm->created) {
++			AuDbg("here\n");
++			delegated = NULL;
++			infopath.dentry = elm->info_dentry;
++			err = vfsub_unlink(h_dir, &infopath, &delegated,
++					   !w->no_sio);
++			AuTraceErr(err);
++			if (unlikely(err == -EWOULDBLOCK))
++				iput(delegated);
++			dput(elm->info_dentry);
++		} else if (elm->info_last) {
++			AuDbg("here\n");
++			w->fdata->drinfo = *elm->info_last;
++			memcpy(w->fdata->drinfo.oldname,
++			       elm->info_last->oldname,
++			       elm->info_last->oldnamelen);
++			err = au_drinfo_store_sio(w, /*elm*/NULL);
++			au_kfree_rcu(elm->info_last);
++		}
++		if (unlikely(err))
++			AuIOErr("%d, %s\n", err, w->whname);
++		/* go on even if err */
++	}
++}
++
++/* caller has to call au_dr_rename_fin() later */
++static int au_drinfo_store(struct dentry *dentry, aufs_bindex_t btgt,
++			   struct qstr *dst_name, void *_rev)
++{
++	int err, sz, nelm;
++	aufs_bindex_t bindex, btail;
++	struct au_drinfo_store work;
++	struct au_drinfo_rev *rev, **p;
++	struct au_drinfo_rev_elm *elm;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_hinode *hdir;
++
++	err = au_drinfo_store_work_init(&work, btgt);
++	AuTraceErr(err);
++	if (unlikely(err))
++		goto out;
++
++	err = -ENOMEM;
++	btail = au_dbtaildir(dentry);
++	nelm = btail - btgt;
++	sz = sizeof(*rev) + sizeof(*elm) * nelm;
++	rev = kcalloc(1, sz, GFP_NOFS);
++	if (unlikely(!rev)) {
++		AuTraceErr(err);
++		goto out_args;
++	}
++	rev->nelm = nelm;
++	elm = rev->elm;
++	p = _rev;
++	*p = rev;
++
++	err = 0;
++	sb = dentry->d_sb;
++	work.h_ppath.dentry = au_h_dptr(dentry, btgt);
++	work.h_ppath.mnt = au_sbr_mnt(sb, btgt);
++	hdir = au_hi(d_inode(dentry), btgt);
++	au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
++	for (bindex = btgt + 1; bindex <= btail; bindex++, elm++) {
++		work.h_dentry = au_h_dptr(dentry, bindex);
++		if (!work.h_dentry)
++			continue;
++
++		err = au_drinfo_construct(&work.fdata, work.h_dentry,
++					  &work.allocated);
++		AuTraceErr(err);
++		if (unlikely(err))
++			break;
++
++		work.renameback = au_qstreq(&work.h_dentry->d_name, dst_name);
++		br = au_sbr(sb, bindex);
++		work.whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
++		work.whnamelen += au_drinfo_name(br, work.infoname,
++						 work.infonamelen);
++		AuDbg("whname %.*s, i%llu, %.*s\n",
++		      work.whnamelen, work.whname,
++		      be64_to_cpu((__force __be64)work.fdata->drinfo.ino),
++		      work.fdata->drinfo.oldnamelen,
++		      work.fdata->drinfo.oldname);
++
++		err = au_drinfo_store_sio(&work, elm);
++		AuTraceErr(err);
++		if (unlikely(err))
++			break;
++	}
++	if (unlikely(err)) {
++		/* revert all drinfo */
++		au_drinfo_store_rev(rev, &work);
++		au_kfree_try_rcu(rev);
++		*p = NULL;
++	}
++	au_hn_inode_unlock(hdir);
++
++out_args:
++	au_drinfo_store_work_fin(&work);
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
++		 struct qstr *dst_name, void *_rev)
++{
++	int err, already;
++	ino_t ino;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_dr_br *dr;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++	struct au_dr_hino *ent;
++	struct au_drinfo_rev *rev, **p;
++
++	AuDbg("bindex %d\n", bindex);
++
++	err = -ENOMEM;
++	ent = kmalloc(sizeof(*ent), GFP_NOFS);
++	if (unlikely(!ent))
++		goto out;
++
++	sb = src->d_sb;
++	br = au_sbr(sb, bindex);
++	dr = &br->br_dirren;
++	h_dentry = au_h_dptr(src, bindex);
++	h_inode = d_inode(h_dentry);
++	ino = h_inode->i_ino;
++	ent->dr_h_ino = ino;
++	already = au_dr_hino_test_add(dr, ino, ent);
++	AuDbg("b%d, hi%llu, already %d\n",
++	      bindex, (unsigned long long)ino, already);
++
++	err = au_drinfo_store(src, bindex, dst_name, _rev);
++	AuTraceErr(err);
++	if (!err) {
++		p = _rev;
++		rev = *p;
++		rev->already = already;
++		goto out; /* success */
++	}
++
++	/* revert */
++	if (!already)
++		au_dr_hino_del(dr, ent);
++	au_kfree_rcu(ent);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *_rev)
++{
++	struct au_drinfo_rev *rev;
++	struct au_drinfo_rev_elm *elm;
++	int nelm;
++
++	rev = _rev;
++	elm = rev->elm;
++	for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
++		dput(elm->info_dentry);
++		au_kfree_rcu(elm->info_last);
++	}
++	au_kfree_try_rcu(rev);
++}
++
++void au_dr_rename_rev(struct dentry *src, aufs_bindex_t btgt, void *_rev)
++{
++	int err;
++	struct au_drinfo_store work;
++	struct au_drinfo_rev *rev = _rev;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct inode *h_inode;
++	struct au_dr_br *dr;
++	struct au_dr_hino *ent;
++
++	err = au_drinfo_store_work_init(&work, btgt);
++	if (unlikely(err))
++		goto out;
++
++	sb = src->d_sb;
++	br = au_sbr(sb, btgt);
++	work.h_ppath.dentry = au_h_dptr(src, btgt);
++	work.h_ppath.mnt = au_br_mnt(br);
++	au_drinfo_store_rev(rev, &work);
++	au_drinfo_store_work_fin(&work);
++	if (rev->already)
++		goto out;
++
++	dr = &br->br_dirren;
++	h_inode = d_inode(work.h_ppath.dentry);
++	ent = au_dr_hino_find(dr, h_inode->i_ino);
++	BUG_ON(!ent);
++	au_dr_hino_del(dr, ent);
++	au_kfree_rcu(ent);
++
++out:
++	au_kfree_try_rcu(rev);
++	if (unlikely(err))
++		pr_err("failed to remove dirren info\n");
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct au_drinfo *au_drinfo_do_load(struct path *h_ppath,
++					   char *whname, int whnamelen,
++					   struct dentry **info_dentry)
++{
++	struct au_drinfo *drinfo;
++	struct file *f;
++	struct inode *h_dir;
++	struct path infopath;
++	int unlocked;
++
++	AuDbg("%pd/%.*s\n", h_ppath->dentry, whnamelen, whname);
++
++	*info_dentry = NULL;
++	drinfo = NULL;
++	unlocked = 0;
++	h_dir = d_inode(h_ppath->dentry);
++	inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
++	infopath.dentry = vfsub_lookup_one_len(whname, h_ppath->dentry,
++					       whnamelen);
++	if (IS_ERR(infopath.dentry)) {
++		drinfo = (void *)infopath.dentry;
++		goto out;
++	}
++
++	if (d_is_negative(infopath.dentry))
++		goto out_dput; /* success */
++
++	infopath.mnt = h_ppath->mnt;
++	f = vfsub_dentry_open(&infopath, O_RDONLY);
++	inode_unlock_shared(h_dir);
++	unlocked = 1;
++	if (IS_ERR(f)) {
++		drinfo = (void *)f;
++		goto out_dput;
++	}
++
++	drinfo = au_drinfo_read_k(f, /*h_ino*/0);
++	if (IS_ERR_OR_NULL(drinfo))
++		goto out_fput;
++
++	AuDbg("oldname %.*s\n", drinfo->oldnamelen, drinfo->oldname);
++	*info_dentry = dget(infopath.dentry); /* keep it alive */
++
++out_fput:
++	fput(f);
++out_dput:
++	dput(infopath.dentry);
++out:
++	if (!unlocked)
++		inode_unlock_shared(h_dir);
++	AuTraceErrPtr(drinfo);
++	return drinfo;
++}
++
++struct au_drinfo_do_load_args {
++	struct au_drinfo **drinfop;
++	struct path *h_ppath;
++	char *whname;
++	int whnamelen;
++	struct dentry **info_dentry;
++};
++
++static void au_call_drinfo_do_load(void *args)
++{
++	struct au_drinfo_do_load_args *a = args;
++
++	*a->drinfop = au_drinfo_do_load(a->h_ppath, a->whname, a->whnamelen,
++					a->info_dentry);
++}
++
++struct au_drinfo_load {
++	struct path h_ppath;
++	struct qstr *qname;
++	unsigned char no_sio;
++
++	aufs_bindex_t ninfo;
++	struct au_drinfo **drinfo;
++};
++
++static int au_drinfo_load(struct au_drinfo_load *w, aufs_bindex_t bindex,
++			  struct au_branch *br)
++{
++	int err, wkq_err, whnamelen, e;
++	char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ]
++		= AUFS_WH_DR_INFO_PFX;
++	struct au_drinfo *drinfo;
++	struct qstr oldname;
++	struct inode *h_dir, *delegated;
++	struct dentry *info_dentry;
++	struct path infopath;
++
++	whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
++	whnamelen += au_drinfo_name(br, whname + whnamelen,
++				    sizeof(whname) - whnamelen);
++	if (w->no_sio)
++		drinfo = au_drinfo_do_load(&w->h_ppath, whname, whnamelen,
++					   &info_dentry);
++	else {
++		struct au_drinfo_do_load_args args = {
++			.drinfop	= &drinfo,
++			.h_ppath	= &w->h_ppath,
++			.whname		= whname,
++			.whnamelen	= whnamelen,
++			.info_dentry	= &info_dentry
++		};
++		wkq_err = au_wkq_wait(au_call_drinfo_do_load, &args);
++		if (unlikely(wkq_err))
++			drinfo = ERR_PTR(wkq_err);
++	}
++	err = PTR_ERR(drinfo);
++	if (IS_ERR_OR_NULL(drinfo))
++		goto out;
++
++	err = 0;
++	oldname.len = drinfo->oldnamelen;
++	oldname.name = drinfo->oldname;
++	if (au_qstreq(w->qname, &oldname)) {
++		/* the name is renamed back */
++		au_kfree_rcu(drinfo);
++		drinfo = NULL;
++
++		infopath.dentry = info_dentry;
++		infopath.mnt = w->h_ppath.mnt;
++		h_dir = d_inode(w->h_ppath.dentry);
++		delegated = NULL;
++		inode_lock_nested(h_dir, AuLsc_I_PARENT);
++		e = vfsub_unlink(h_dir, &infopath, &delegated, !w->no_sio);
++		inode_unlock(h_dir);
++		if (unlikely(e))
++			AuIOErr("ignored %d, %pd2\n", e, &infopath.dentry);
++		if (unlikely(e == -EWOULDBLOCK))
++			iput(delegated);
++	}
++	au_kfree_rcu(w->drinfo[bindex]);
++	w->drinfo[bindex] = drinfo;
++	dput(info_dentry);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void au_dr_lkup_free(struct au_drinfo **drinfo, int n)
++{
++	struct au_drinfo **p = drinfo;
++
++	while (n-- > 0)
++		au_kfree_rcu(*drinfo++);
++	au_kfree_try_rcu(p);
++}
++
++int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
++	       aufs_bindex_t btgt)
++{
++	int err, ninfo;
++	struct au_drinfo_load w;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++	struct inode *h_dir;
++	struct au_dr_hino *ent;
++	struct super_block *sb;
++
++	AuDbg("%.*s, name %.*s, whname %.*s, b%d\n",
++	      AuLNPair(&dentry->d_name), AuLNPair(&lkup->dirren.dr_name),
++	      AuLNPair(&lkup->whname), btgt);
++
++	sb = dentry->d_sb;
++	bbot = au_sbbot(sb);
++	w.ninfo = bbot + 1;
++	if (!lkup->dirren.drinfo) {
++		lkup->dirren.drinfo = kcalloc(w.ninfo,
++					      sizeof(*lkup->dirren.drinfo),
++					      GFP_NOFS);
++		if (unlikely(!lkup->dirren.drinfo)) {
++			err = -ENOMEM;
++			goto out;
++		}
++		lkup->dirren.ninfo = w.ninfo;
++	}
++	w.drinfo = lkup->dirren.drinfo;
++	w.no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
++	w.h_ppath.dentry = au_h_dptr(dentry, btgt);
++	AuDebugOn(!w.h_ppath.dentry);
++	w.h_ppath.mnt = au_sbr_mnt(sb, btgt);
++	w.qname = &dentry->d_name;
++
++	ninfo = 0;
++	for (bindex = btgt + 1; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		err = au_drinfo_load(&w, bindex, br);
++		if (unlikely(err))
++			goto out_free;
++		if (w.drinfo[bindex])
++			ninfo++;
++	}
++	if (!ninfo) {
++		br = au_sbr(sb, btgt);
++		h_dir = d_inode(w.h_ppath.dentry);
++		ent = au_dr_hino_find(&br->br_dirren, h_dir->i_ino);
++		AuDebugOn(!ent);
++		au_dr_hino_del(&br->br_dirren, ent);
++		au_kfree_rcu(ent);
++	}
++	goto out; /* success */
++
++out_free:
++	au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
++	lkup->dirren.ninfo = 0;
++	lkup->dirren.drinfo = NULL;
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++void au_dr_lkup_fin(struct au_do_lookup_args *lkup)
++{
++	au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
++}
++
++int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt)
++{
++	int err;
++	struct au_drinfo *drinfo;
++
++	err = 0;
++	if (!lkup->dirren.drinfo)
++		goto out;
++	AuDebugOn(lkup->dirren.ninfo < btgt + 1);
++	drinfo = lkup->dirren.drinfo[btgt + 1];
++	if (!drinfo)
++		goto out;
++
++	au_kfree_try_rcu(lkup->whname.name);
++	lkup->whname.name = NULL;
++	lkup->dirren.dr_name.len = drinfo->oldnamelen;
++	lkup->dirren.dr_name.name = drinfo->oldname;
++	lkup->name = &lkup->dirren.dr_name;
++	err = au_wh_name_alloc(&lkup->whname, lkup->name);
++	if (!err)
++		AuDbg("name %.*s, whname %.*s, b%d\n",
++		      AuLNPair(lkup->name), AuLNPair(&lkup->whname),
++		      btgt);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
++		     ino_t h_ino)
++{
++	int match;
++	struct au_drinfo *drinfo;
++
++	match = 1;
++	if (!lkup->dirren.drinfo)
++		goto out;
++	AuDebugOn(lkup->dirren.ninfo < bindex + 1);
++	drinfo = lkup->dirren.drinfo[bindex + 1];
++	if (!drinfo)
++		goto out;
++
++	match = (drinfo->ino == h_ino);
++	AuDbg("match %d\n", match);
++
++out:
++	return match;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_dr_opt_set(struct super_block *sb)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	err = 0;
++	bbot = au_sbbot(sb);
++	for (bindex = 0; !err && bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		err = au_dr_hino(sb, bindex, /*br*/NULL, &br->br_path);
++	}
++
++	return err;
++}
++
++int au_dr_opt_flush(struct super_block *sb)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	err = 0;
++	bbot = au_sbbot(sb);
++	for (bindex = 0; !err && bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_writable(br->br_perm))
++			err = au_dr_hino(sb, bindex, /*br*/NULL, /*path*/NULL);
++	}
++
++	return err;
++}
++
++int au_dr_opt_clr(struct super_block *sb, int no_flush)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	err = 0;
++	if (!no_flush) {
++		err = au_dr_opt_flush(sb);
++		if (unlikely(err))
++			goto out;
++	}
++
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		au_dr_hino_free(&br->br_dirren);
++	}
++
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/dirren.h linux-5.4-aufs/fs/aufs/dirren.h
+--- linux-5.4/fs/aufs/dirren.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dirren.h	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,127 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2017-2019 Junjiro R. Okajima
++ */
++
++/*
++ * renamed dir info
++ */
++
++#ifndef __AUFS_DIRREN_H__
++#define __AUFS_DIRREN_H__
++
++#ifdef __KERNEL__
++
++#include <linux/dcache.h>
++#include <linux/statfs.h>
++#include <linux/uuid.h>
++#include "hbl.h"
++
++#define AuDirren_NHASH 100
++
++#ifdef CONFIG_AUFS_DIRREN
++enum au_brid_type {
++	AuBrid_Unset,
++	AuBrid_UUID,
++	AuBrid_FSID,
++	AuBrid_DEV
++};
++
++struct au_dr_brid {
++	enum au_brid_type	type;
++	union {
++		uuid_t	uuid;	/* unimplemented yet */
++		fsid_t	fsid;
++		dev_t	dev;
++	};
++};
++
++/* 20 is the max digits length of ulong 64 */
++/* brid-type "_" uuid "_" inum */
++#define AUFS_DIRREN_FNAME_SZ	(1 + 1 + UUID_STRING_LEN + 20)
++#define AUFS_DIRREN_ENV_VAL_SZ	(AUFS_DIRREN_FNAME_SZ + 1 + 20)
++
++struct au_dr_hino {
++	struct hlist_bl_node	dr_hnode;
++	ino_t			dr_h_ino;
++};
++
++struct au_dr_br {
++	struct hlist_bl_head	dr_h_ino[AuDirren_NHASH];
++	struct au_dr_brid	dr_brid;
++};
++
++struct au_dr_lookup {
++	/* dr_name is pointed by struct au_do_lookup_args.name */
++	struct qstr		dr_name; /* subset of dr_info */
++	aufs_bindex_t		ninfo;
++	struct au_drinfo	**drinfo;
++};
++#else
++struct au_dr_hino;
++/* empty */
++struct au_dr_br { };
++struct au_dr_lookup { };
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++struct au_branch;
++struct au_do_lookup_args;
++struct au_hinode;
++#ifdef CONFIG_AUFS_DIRREN
++int au_dr_hino_test_add(struct au_dr_br *dr, ino_t h_ino,
++			struct au_dr_hino *add_ent);
++void au_dr_hino_free(struct au_dr_br *dr);
++int au_dr_br_init(struct super_block *sb, struct au_branch *br,
++		  const struct path *path);
++int au_dr_br_fin(struct super_block *sb, struct au_branch *br);
++int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
++		 struct qstr *dst_name, void *_rev);
++void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *rev);
++void au_dr_rename_rev(struct dentry *src, aufs_bindex_t bindex, void *rev);
++int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
++	       aufs_bindex_t bindex);
++int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
++int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
++		     ino_t h_ino);
++void au_dr_lkup_fin(struct au_do_lookup_args *lkup);
++int au_dr_opt_set(struct super_block *sb);
++int au_dr_opt_flush(struct super_block *sb);
++int au_dr_opt_clr(struct super_block *sb, int no_flush);
++#else
++AuStubInt0(au_dr_hino_test_add, struct au_dr_br *dr, ino_t h_ino,
++	   struct au_dr_hino *add_ent);
++AuStubVoid(au_dr_hino_free, struct au_dr_br *dr);
++AuStubInt0(au_dr_br_init, struct super_block *sb, struct au_branch *br,
++	   const struct path *path);
++AuStubInt0(au_dr_br_fin, struct super_block *sb, struct au_branch *br);
++AuStubInt0(au_dr_rename, struct dentry *src, aufs_bindex_t bindex,
++	   struct qstr *dst_name, void *_rev);
++AuStubVoid(au_dr_rename_fin, struct dentry *src, aufs_bindex_t btgt, void *rev);
++AuStubVoid(au_dr_rename_rev, struct dentry *src, aufs_bindex_t bindex,
++	   void *rev);
++AuStubInt0(au_dr_lkup, struct au_do_lookup_args *lkup, struct dentry *dentry,
++	   aufs_bindex_t bindex);
++AuStubInt0(au_dr_lkup_name, struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
++AuStubInt0(au_dr_lkup_h_ino, struct au_do_lookup_args *lkup,
++	   aufs_bindex_t bindex, ino_t h_ino);
++AuStubVoid(au_dr_lkup_fin, struct au_do_lookup_args *lkup);
++AuStubInt0(au_dr_opt_set, struct super_block *sb);
++AuStubInt0(au_dr_opt_flush, struct super_block *sb);
++AuStubInt0(au_dr_opt_clr, struct super_block *sb, int no_flush);
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_DIRREN
++static inline int au_dr_ihash(ino_t h_ino)
++{
++	return h_ino % AuDirren_NHASH;
++}
++#else
++AuStubInt0(au_dr_ihash, ino_t h_ino);
++#endif
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DIRREN_H__ */
+diff -Nurp linux-5.4/fs/aufs/dynop.c linux-5.4-aufs/fs/aufs/dynop.c
+--- linux-5.4/fs/aufs/dynop.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dynop.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,354 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2010-2019 Junjiro R. Okajima
++ */
++
++/*
++ * dynamically customizable operations for regular files
++ */
++
++#include "aufs.h"
++
++#define DyPrSym(key)	AuDbgSym(key->dk_op.dy_hop)
++
++/*
++ * How large will these lists be?
++ * Usually just a few elements, 20-30 at most for each, I guess.
++ */
++static struct hlist_bl_head dynop[AuDyLast];
++
++static struct au_dykey *dy_gfind_get(struct hlist_bl_head *hbl,
++				     const void *h_op)
++{
++	struct au_dykey *key, *tmp;
++	struct hlist_bl_node *pos;
++
++	key = NULL;
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
++		if (tmp->dk_op.dy_hop == h_op) {
++			if (kref_get_unless_zero(&tmp->dk_kref))
++				key = tmp;
++			break;
++		}
++	hlist_bl_unlock(hbl);
++
++	return key;
++}
++
++static struct au_dykey *dy_bradd(struct au_branch *br, struct au_dykey *key)
++{
++	struct au_dykey **k, *found;
++	const void *h_op = key->dk_op.dy_hop;
++	int i;
++
++	found = NULL;
++	k = br->br_dykey;
++	for (i = 0; i < AuBrDynOp; i++)
++		if (k[i]) {
++			if (k[i]->dk_op.dy_hop == h_op) {
++				found = k[i];
++				break;
++			}
++		} else
++			break;
++	if (!found) {
++		spin_lock(&br->br_dykey_lock);
++		for (; i < AuBrDynOp; i++)
++			if (k[i]) {
++				if (k[i]->dk_op.dy_hop == h_op) {
++					found = k[i];
++					break;
++				}
++			} else {
++				k[i] = key;
++				break;
++			}
++		spin_unlock(&br->br_dykey_lock);
++		BUG_ON(i == AuBrDynOp); /* expand the array */
++	}
++
++	return found;
++}
++
++/* kref_get() if @key is already added */
++static struct au_dykey *dy_gadd(struct hlist_bl_head *hbl, struct au_dykey *key)
++{
++	struct au_dykey *tmp, *found;
++	struct hlist_bl_node *pos;
++	const void *h_op = key->dk_op.dy_hop;
++
++	found = NULL;
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
++		if (tmp->dk_op.dy_hop == h_op) {
++			if (kref_get_unless_zero(&tmp->dk_kref))
++				found = tmp;
++			break;
++		}
++	if (!found)
++		hlist_bl_add_head(&key->dk_hnode, hbl);
++	hlist_bl_unlock(hbl);
++
++	if (!found)
++		DyPrSym(key);
++	return found;
++}
++
++static void dy_free_rcu(struct rcu_head *rcu)
++{
++	struct au_dykey *key;
++
++	key = container_of(rcu, struct au_dykey, dk_rcu);
++	DyPrSym(key);
++	kfree(key);
++}
++
++static void dy_free(struct kref *kref)
++{
++	struct au_dykey *key;
++	struct hlist_bl_head *hbl;
++
++	key = container_of(kref, struct au_dykey, dk_kref);
++	hbl = dynop + key->dk_op.dy_type;
++	au_hbl_del(&key->dk_hnode, hbl);
++	call_rcu(&key->dk_rcu, dy_free_rcu);
++}
++
++void au_dy_put(struct au_dykey *key)
++{
++	kref_put(&key->dk_kref, dy_free);
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define DyDbgSize(cnt, op)	AuDebugOn(cnt != sizeof(op)/sizeof(void *))
++
++#ifdef CONFIG_AUFS_DEBUG
++#define DyDbgDeclare(cnt)	unsigned int cnt = 0
++#define DyDbgInc(cnt)		do { cnt++; } while (0)
++#else
++#define DyDbgDeclare(cnt)	do {} while (0)
++#define DyDbgInc(cnt)		do {} while (0)
++#endif
++
++#define DySet(func, dst, src, h_op, h_sb) do {				\
++	DyDbgInc(cnt);							\
++	if (h_op->func) {						\
++		if (src.func)						\
++			dst.func = src.func;				\
++		else							\
++			AuDbg("%s %s\n", au_sbtype(h_sb), #func);	\
++	}								\
++} while (0)
++
++#define DySetForce(func, dst, src) do {		\
++	AuDebugOn(!src.func);			\
++	DyDbgInc(cnt);				\
++	dst.func = src.func;			\
++} while (0)
++
++#define DySetAop(func) \
++	DySet(func, dyaop->da_op, aufs_aop, h_aop, h_sb)
++#define DySetAopForce(func) \
++	DySetForce(func, dyaop->da_op, aufs_aop)
++
++static void dy_aop(struct au_dykey *key, const void *h_op,
++		   struct super_block *h_sb __maybe_unused)
++{
++	struct au_dyaop *dyaop = (void *)key;
++	const struct address_space_operations *h_aop = h_op;
++	DyDbgDeclare(cnt);
++
++	AuDbg("%s\n", au_sbtype(h_sb));
++
++	DySetAop(writepage);
++	DySetAopForce(readpage);	/* force */
++	DySetAop(writepages);
++	DySetAop(set_page_dirty);
++	DySetAop(readpages);
++	DySetAop(write_begin);
++	DySetAop(write_end);
++	DySetAop(bmap);
++	DySetAop(invalidatepage);
++	DySetAop(releasepage);
++	DySetAop(freepage);
++	/* this one will be changed according to an aufs mount option */
++	DySetAop(direct_IO);
++	DySetAop(migratepage);
++	DySetAop(isolate_page);
++	DySetAop(putback_page);
++	DySetAop(launder_page);
++	DySetAop(is_partially_uptodate);
++	DySetAop(is_dirty_writeback);
++	DySetAop(error_remove_page);
++	DySetAop(swap_activate);
++	DySetAop(swap_deactivate);
++
++	DyDbgSize(cnt, *h_aop);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void dy_bug(struct kref *kref)
++{
++	BUG();
++}
++
++static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br)
++{
++	struct au_dykey *key, *old;
++	struct hlist_bl_head *hbl;
++	struct op {
++		unsigned int sz;
++		void (*set)(struct au_dykey *key, const void *h_op,
++			    struct super_block *h_sb __maybe_unused);
++	};
++	static const struct op a[] = {
++		[AuDy_AOP] = {
++			.sz	= sizeof(struct au_dyaop),
++			.set	= dy_aop
++		}
++	};
++	const struct op *p;
++
++	hbl = dynop + op->dy_type;
++	key = dy_gfind_get(hbl, op->dy_hop);
++	if (key)
++		goto out_add; /* success */
++
++	p = a + op->dy_type;
++	key = kzalloc(p->sz, GFP_NOFS);
++	if (unlikely(!key)) {
++		key = ERR_PTR(-ENOMEM);
++		goto out;
++	}
++
++	key->dk_op.dy_hop = op->dy_hop;
++	kref_init(&key->dk_kref);
++	p->set(key, op->dy_hop, au_br_sb(br));
++	old = dy_gadd(hbl, key);
++	if (old) {
++		au_kfree_rcu(key);
++		key = old;
++	}
++
++out_add:
++	old = dy_bradd(br, key);
++	if (old)
++		/* its ref-count should never be zero here */
++		kref_put(&key->dk_kref, dy_bug);
++out:
++	return key;
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * Aufs prohibits O_DIRECT by default even if the branch supports it.
++ * This behaviour is necessary to return an error from open(O_DIRECT) instead
++ * of the succeeding I/O. The dio mount option enables O_DIRECT and makes
++ * open(O_DIRECT) always succeed, but the succeeding I/O may return an error.
++ * See the aufs manual in detail.
++ */
++static void dy_adx(struct au_dyaop *dyaop, int do_dx)
++{
++	if (!do_dx)
++		dyaop->da_op.direct_IO = NULL;
++	else
++		dyaop->da_op.direct_IO = aufs_aop.direct_IO;
++}
++
++static struct au_dyaop *dy_aget(struct au_branch *br,
++				const struct address_space_operations *h_aop,
++				int do_dx)
++{
++	struct au_dyaop *dyaop;
++	struct au_dynop op;
++
++	op.dy_type = AuDy_AOP;
++	op.dy_haop = h_aop;
++	dyaop = (void *)dy_get(&op, br);
++	if (IS_ERR(dyaop))
++		goto out;
++	dy_adx(dyaop, do_dx);
++
++out:
++	return dyaop;
++}
++
++int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
++		struct inode *h_inode)
++{
++	int err, do_dx;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_dyaop *dyaop;
++
++	AuDebugOn(!S_ISREG(h_inode->i_mode));
++	IiMustWriteLock(inode);
++
++	sb = inode->i_sb;
++	br = au_sbr(sb, bindex);
++	do_dx = !!au_opt_test(au_mntflags(sb), DIO);
++	dyaop = dy_aget(br, h_inode->i_mapping->a_ops, do_dx);
++	err = PTR_ERR(dyaop);
++	if (IS_ERR(dyaop))
++		/* unnecessary to call dy_fput() */
++		goto out;
++
++	err = 0;
++	inode->i_mapping->a_ops = &dyaop->da_op;
++
++out:
++	return err;
++}
++
++/*
++ * Is it safe to replace a_ops during the inode/file is in operation?
++ * Yes, I hope so.
++ */
++int au_dy_irefresh(struct inode *inode)
++{
++	int err;
++	aufs_bindex_t btop;
++	struct inode *h_inode;
++
++	err = 0;
++	if (S_ISREG(inode->i_mode)) {
++		btop = au_ibtop(inode);
++		h_inode = au_h_iptr(inode, btop);
++		err = au_dy_iaop(inode, btop, h_inode);
++	}
++	return err;
++}
++
++void au_dy_arefresh(int do_dx)
++{
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_dykey *key;
++
++	hbl = dynop + AuDy_AOP;
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(key, pos, hbl, dk_hnode)
++		dy_adx((void *)key, do_dx);
++	hlist_bl_unlock(hbl);
++}
++
++/* ---------------------------------------------------------------------- */
++
++void __init au_dy_init(void)
++{
++	int i;
++
++	for (i = 0; i < AuDyLast; i++)
++		INIT_HLIST_BL_HEAD(dynop + i);
++}
++
++void au_dy_fin(void)
++{
++	int i;
++
++	for (i = 0; i < AuDyLast; i++)
++		WARN_ON(!hlist_bl_empty(dynop + i));
++}
+diff -Nurp linux-5.4/fs/aufs/dynop.h linux-5.4-aufs/fs/aufs/dynop.h
+--- linux-5.4/fs/aufs/dynop.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/dynop.h	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,64 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2010-2019 Junjiro R. Okajima
++ */
++
++/*
++ * dynamically customizable operations (for regular files only)
++ */
++
++#ifndef __AUFS_DYNOP_H__
++#define __AUFS_DYNOP_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fs.h>
++#include <linux/kref.h>
++
++enum {AuDy_AOP, AuDyLast};
++
++struct au_dynop {
++	int						dy_type;
++	union {
++		const void				*dy_hop;
++		const struct address_space_operations	*dy_haop;
++	};
++};
++
++struct au_dykey {
++	union {
++		struct hlist_bl_node	dk_hnode;
++		struct rcu_head		dk_rcu;
++	};
++	struct au_dynop		dk_op;
++
++	/*
++	 * during I am in the branch local array, kref is gotten. when the
++	 * branch is removed, kref is put.
++	 */
++	struct kref		dk_kref;
++};
++
++/* stop unioning since their sizes are very different from each other */
++struct au_dyaop {
++	struct au_dykey			da_key;
++	struct address_space_operations	da_op; /* not const */
++};
++/* make sure that 'struct au_dykey *' can be any type */
++static_assert(!offsetof(struct au_dyaop, da_key));
++
++/* ---------------------------------------------------------------------- */
++
++/* dynop.c */
++struct au_branch;
++void au_dy_put(struct au_dykey *key);
++int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
++		struct inode *h_inode);
++int au_dy_irefresh(struct inode *inode);
++void au_dy_arefresh(int do_dio);
++
++void __init au_dy_init(void);
++void au_dy_fin(void);
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_DYNOP_H__ */
+diff -Nurp linux-5.4/fs/aufs/export.c linux-5.4-aufs/fs/aufs/export.c
+--- linux-5.4/fs/aufs/export.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/export.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,825 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * export via nfs
++ */
++
++#include <linux/exportfs.h>
++#include <linux/fs_struct.h>
++#include <linux/namei.h>
++#include <linux/nsproxy.h>
++#include <linux/random.h>
++#include <linux/writeback.h>
++#include "aufs.h"
++
++union conv {
++#ifdef CONFIG_AUFS_INO_T_64
++	__u32 a[2];
++#else
++	__u32 a[1];
++#endif
++	ino_t ino;
++};
++
++static ino_t decode_ino(__u32 *a)
++{
++	union conv u;
++
++	BUILD_BUG_ON(sizeof(u.ino) != sizeof(u.a));
++	u.a[0] = a[0];
++#ifdef CONFIG_AUFS_INO_T_64
++	u.a[1] = a[1];
++#endif
++	return u.ino;
++}
++
++static void encode_ino(__u32 *a, ino_t ino)
++{
++	union conv u;
++
++	u.ino = ino;
++	a[0] = u.a[0];
++#ifdef CONFIG_AUFS_INO_T_64
++	a[1] = u.a[1];
++#endif
++}
++
++/* NFS file handle */
++enum {
++	Fh_br_id,
++	Fh_sigen,
++#ifdef CONFIG_AUFS_INO_T_64
++	/* support 64bit inode number */
++	Fh_ino1,
++	Fh_ino2,
++	Fh_dir_ino1,
++	Fh_dir_ino2,
++#else
++	Fh_ino1,
++	Fh_dir_ino1,
++#endif
++	Fh_igen,
++	Fh_h_type,
++	Fh_tail,
++
++	Fh_ino = Fh_ino1,
++	Fh_dir_ino = Fh_dir_ino1
++};
++
++static int au_test_anon(struct dentry *dentry)
++{
++	/* note: read d_flags without d_lock */
++	return !!(dentry->d_flags & DCACHE_DISCONNECTED);
++}
++
++int au_test_nfsd(void)
++{
++	int ret;
++	struct task_struct *tsk = current;
++	char comm[sizeof(tsk->comm)];
++
++	ret = 0;
++	if (tsk->flags & PF_KTHREAD) {
++		get_task_comm(comm, tsk);
++		ret = !strcmp(comm, "nfsd");
++	}
++
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++/* inode generation external table */
++
++void au_xigen_inc(struct inode *inode)
++{
++	loff_t pos;
++	ssize_t sz;
++	__u32 igen;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++
++	sb = inode->i_sb;
++	AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
++
++	sbinfo = au_sbi(sb);
++	pos = inode->i_ino;
++	pos *= sizeof(igen);
++	igen = inode->i_generation + 1;
++	sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xigen, &igen,
++			 sizeof(igen), &pos);
++	if (sz == sizeof(igen))
++		return; /* success */
++
++	if (unlikely(sz >= 0))
++		AuIOErr("xigen error (%zd)\n", sz);
++}
++
++int au_xigen_new(struct inode *inode)
++{
++	int err;
++	loff_t pos;
++	ssize_t sz;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++
++	err = 0;
++	/* todo: dirty, at mount time */
++	if (inode->i_ino == AUFS_ROOT_INO)
++		goto out;
++	sb = inode->i_sb;
++	SiMustAnyLock(sb);
++	if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
++		goto out;
++
++	err = -EFBIG;
++	pos = inode->i_ino;
++	if (unlikely(au_loff_max / sizeof(inode->i_generation) - 1 < pos)) {
++		AuIOErr1("too large i%lld\n", pos);
++		goto out;
++	}
++	pos *= sizeof(inode->i_generation);
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	file = sbinfo->si_xigen;
++	BUG_ON(!file);
++
++	if (vfsub_f_size_read(file)
++	    < pos + sizeof(inode->i_generation)) {
++		inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next);
++		sz = xino_fwrite(sbinfo->si_xwrite, file, &inode->i_generation,
++				 sizeof(inode->i_generation), &pos);
++	} else
++		sz = xino_fread(sbinfo->si_xread, file, &inode->i_generation,
++				sizeof(inode->i_generation), &pos);
++	if (sz == sizeof(inode->i_generation))
++		goto out; /* success */
++
++	err = sz;
++	if (unlikely(sz >= 0)) {
++		err = -EIO;
++		AuIOErr("xigen error (%zd)\n", sz);
++	}
++
++out:
++	return err;
++}
++
++int au_xigen_set(struct super_block *sb, struct path *path)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	file = au_xino_create2(sb, path, sbinfo->si_xigen);
++	err = PTR_ERR(file);
++	if (IS_ERR(file))
++		goto out;
++	err = 0;
++	if (sbinfo->si_xigen)
++		fput(sbinfo->si_xigen);
++	sbinfo->si_xigen = file;
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++void au_xigen_clr(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	if (sbinfo->si_xigen) {
++		fput(sbinfo->si_xigen);
++		sbinfo->si_xigen = NULL;
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct dentry *decode_by_ino(struct super_block *sb, ino_t ino,
++				    ino_t dir_ino)
++{
++	struct dentry *dentry, *d;
++	struct inode *inode;
++	unsigned int sigen;
++
++	dentry = NULL;
++	inode = ilookup(sb, ino);
++	if (!inode)
++		goto out;
++
++	dentry = ERR_PTR(-ESTALE);
++	sigen = au_sigen(sb);
++	if (unlikely(au_is_bad_inode(inode)
++		     || IS_DEADDIR(inode)
++		     || sigen != au_iigen(inode, NULL)))
++		goto out_iput;
++
++	dentry = NULL;
++	if (!dir_ino || S_ISDIR(inode->i_mode))
++		dentry = d_find_alias(inode);
++	else {
++		spin_lock(&inode->i_lock);
++		hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
++			spin_lock(&d->d_lock);
++			if (!au_test_anon(d)
++			    && d_inode(d->d_parent)->i_ino == dir_ino) {
++				dentry = dget_dlock(d);
++				spin_unlock(&d->d_lock);
++				break;
++			}
++			spin_unlock(&d->d_lock);
++		}
++		spin_unlock(&inode->i_lock);
++	}
++	if (unlikely(dentry && au_digen_test(dentry, sigen))) {
++		/* need to refresh */
++		dput(dentry);
++		dentry = NULL;
++	}
++
++out_iput:
++	iput(inode);
++out:
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* todo: dirty? */
++/* if exportfs_decode_fh() passed vfsmount*, we could be happy */
++
++struct au_compare_mnt_args {
++	/* input */
++	struct super_block *sb;
++
++	/* output */
++	struct vfsmount *mnt;
++};
++
++static int au_compare_mnt(struct vfsmount *mnt, void *arg)
++{
++	struct au_compare_mnt_args *a = arg;
++
++	if (mnt->mnt_sb != a->sb)
++		return 0;
++	a->mnt = mntget(mnt);
++	return 1;
++}
++
++static struct vfsmount *au_mnt_get(struct super_block *sb)
++{
++	int err;
++	struct path root;
++	struct au_compare_mnt_args args = {
++		.sb = sb
++	};
++
++	get_fs_root(current->fs, &root);
++	rcu_read_lock();
++	err = iterate_mounts(au_compare_mnt, &args, root.mnt);
++	rcu_read_unlock();
++	path_put(&root);
++	AuDebugOn(!err);
++	AuDebugOn(!args.mnt);
++	return args.mnt;
++}
++
++struct au_nfsd_si_lock {
++	unsigned int sigen;
++	aufs_bindex_t bindex, br_id;
++	unsigned char force_lock;
++};
++
++static int si_nfsd_read_lock(struct super_block *sb,
++			     struct au_nfsd_si_lock *nsi_lock)
++{
++	int err;
++	aufs_bindex_t bindex;
++
++	si_read_lock(sb, AuLock_FLUSH);
++
++	/* branch id may be wrapped around */
++	err = 0;
++	bindex = au_br_index(sb, nsi_lock->br_id);
++	if (bindex >= 0 && nsi_lock->sigen + AUFS_BRANCH_MAX > au_sigen(sb))
++		goto out; /* success */
++
++	err = -ESTALE;
++	bindex = -1;
++	if (!nsi_lock->force_lock)
++		si_read_unlock(sb);
++
++out:
++	nsi_lock->bindex = bindex;
++	return err;
++}
++
++struct find_name_by_ino {
++	struct dir_context ctx;
++	int called, found;
++	ino_t ino;
++	char *name;
++	int namelen;
++};
++
++static int
++find_name_by_ino(struct dir_context *ctx, const char *name, int namelen,
++		 loff_t offset, u64 ino, unsigned int d_type)
++{
++	struct find_name_by_ino *a = container_of(ctx, struct find_name_by_ino,
++						  ctx);
++
++	a->called++;
++	if (a->ino != ino)
++		return 0;
++
++	memcpy(a->name, name, namelen);
++	a->namelen = namelen;
++	a->found = 1;
++	return 1;
++}
++
++static struct dentry *au_lkup_by_ino(struct path *path, ino_t ino,
++				     struct au_nfsd_si_lock *nsi_lock)
++{
++	struct dentry *dentry, *parent;
++	struct file *file;
++	struct inode *dir;
++	struct find_name_by_ino arg = {
++		.ctx = {
++			.actor = find_name_by_ino
++		}
++	};
++	int err;
++
++	parent = path->dentry;
++	if (nsi_lock)
++		si_read_unlock(parent->d_sb);
++	file = vfsub_dentry_open(path, au_dir_roflags);
++	dentry = (void *)file;
++	if (IS_ERR(file))
++		goto out;
++
++	dentry = ERR_PTR(-ENOMEM);
++	arg.name = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!arg.name))
++		goto out_file;
++	arg.ino = ino;
++	arg.found = 0;
++	do {
++		arg.called = 0;
++		/* smp_mb(); */
++		err = vfsub_iterate_dir(file, &arg.ctx);
++	} while (!err && !arg.found && arg.called);
++	dentry = ERR_PTR(err);
++	if (unlikely(err))
++		goto out_name;
++	/* instead of ENOENT */
++	dentry = ERR_PTR(-ESTALE);
++	if (!arg.found)
++		goto out_name;
++
++	/* do not call vfsub_lkup_one() */
++	dir = d_inode(parent);
++	dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen);
++	AuTraceErrPtr(dentry);
++	if (IS_ERR(dentry))
++		goto out_name;
++	AuDebugOn(au_test_anon(dentry));
++	if (unlikely(d_really_is_negative(dentry))) {
++		dput(dentry);
++		dentry = ERR_PTR(-ENOENT);
++	}
++
++out_name:
++	free_page((unsigned long)arg.name);
++out_file:
++	fput(file);
++out:
++	if (unlikely(nsi_lock
++		     && si_nfsd_read_lock(parent->d_sb, nsi_lock) < 0))
++		if (!IS_ERR(dentry)) {
++			dput(dentry);
++			dentry = ERR_PTR(-ESTALE);
++		}
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++static struct dentry *decode_by_dir_ino(struct super_block *sb, ino_t ino,
++					ino_t dir_ino,
++					struct au_nfsd_si_lock *nsi_lock)
++{
++	struct dentry *dentry;
++	struct path path;
++
++	if (dir_ino != AUFS_ROOT_INO) {
++		path.dentry = decode_by_ino(sb, dir_ino, 0);
++		dentry = path.dentry;
++		if (!path.dentry || IS_ERR(path.dentry))
++			goto out;
++		AuDebugOn(au_test_anon(path.dentry));
++	} else
++		path.dentry = dget(sb->s_root);
++
++	path.mnt = au_mnt_get(sb);
++	dentry = au_lkup_by_ino(&path, ino, nsi_lock);
++	path_put(&path);
++
++out:
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int h_acceptable(void *expv, struct dentry *dentry)
++{
++	return 1;
++}
++
++static char *au_build_path(struct dentry *h_parent, struct path *h_rootpath,
++			   char *buf, int len, struct super_block *sb)
++{
++	char *p;
++	int n;
++	struct path path;
++
++	p = d_path(h_rootpath, buf, len);
++	if (IS_ERR(p))
++		goto out;
++	n = strlen(p);
++
++	path.mnt = h_rootpath->mnt;
++	path.dentry = h_parent;
++	p = d_path(&path, buf, len);
++	if (IS_ERR(p))
++		goto out;
++	if (n != 1)
++		p += n;
++
++	path.mnt = au_mnt_get(sb);
++	path.dentry = sb->s_root;
++	p = d_path(&path, buf, len - strlen(p));
++	mntput(path.mnt);
++	if (IS_ERR(p))
++		goto out;
++	if (n != 1)
++		p[strlen(p)] = '/';
++
++out:
++	AuTraceErrPtr(p);
++	return p;
++}
++
++static
++struct dentry *decode_by_path(struct super_block *sb, ino_t ino, __u32 *fh,
++			      int fh_len, struct au_nfsd_si_lock *nsi_lock)
++{
++	struct dentry *dentry, *h_parent, *root;
++	struct super_block *h_sb;
++	char *pathname, *p;
++	struct vfsmount *h_mnt;
++	struct au_branch *br;
++	int err;
++	struct path path;
++
++	br = au_sbr(sb, nsi_lock->bindex);
++	h_mnt = au_br_mnt(br);
++	h_sb = h_mnt->mnt_sb;
++	/* todo: call lower fh_to_dentry()? fh_to_parent()? */
++	lockdep_off();
++	h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail),
++				      fh_len - Fh_tail, fh[Fh_h_type],
++				      h_acceptable, /*context*/NULL);
++	lockdep_on();
++	dentry = h_parent;
++	if (unlikely(!h_parent || IS_ERR(h_parent))) {
++		AuWarn1("%s decode_fh failed, %ld\n",
++			au_sbtype(h_sb), PTR_ERR(h_parent));
++		goto out;
++	}
++	dentry = NULL;
++	if (unlikely(au_test_anon(h_parent))) {
++		AuWarn1("%s decode_fh returned a disconnected dentry\n",
++			au_sbtype(h_sb));
++		goto out_h_parent;
++	}
++
++	dentry = ERR_PTR(-ENOMEM);
++	pathname = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!pathname))
++		goto out_h_parent;
++
++	root = sb->s_root;
++	path.mnt = h_mnt;
++	di_read_lock_parent(root, !AuLock_IR);
++	path.dentry = au_h_dptr(root, nsi_lock->bindex);
++	di_read_unlock(root, !AuLock_IR);
++	p = au_build_path(h_parent, &path, pathname, PAGE_SIZE, sb);
++	dentry = (void *)p;
++	if (IS_ERR(p))
++		goto out_pathname;
++
++	si_read_unlock(sb);
++	err = vfsub_kern_path(p, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
++	dentry = ERR_PTR(err);
++	if (unlikely(err))
++		goto out_relock;
++
++	dentry = ERR_PTR(-ENOENT);
++	AuDebugOn(au_test_anon(path.dentry));
++	if (unlikely(d_really_is_negative(path.dentry)))
++		goto out_path;
++
++	if (ino != d_inode(path.dentry)->i_ino)
++		dentry = au_lkup_by_ino(&path, ino, /*nsi_lock*/NULL);
++	else
++		dentry = dget(path.dentry);
++
++out_path:
++	path_put(&path);
++out_relock:
++	if (unlikely(si_nfsd_read_lock(sb, nsi_lock) < 0))
++		if (!IS_ERR(dentry)) {
++			dput(dentry);
++			dentry = ERR_PTR(-ESTALE);
++		}
++out_pathname:
++	free_page((unsigned long)pathname);
++out_h_parent:
++	dput(h_parent);
++out:
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct dentry *
++aufs_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len,
++		  int fh_type)
++{
++	struct dentry *dentry;
++	__u32 *fh = fid->raw;
++	struct au_branch *br;
++	ino_t ino, dir_ino;
++	struct au_nfsd_si_lock nsi_lock = {
++		.force_lock	= 0
++	};
++
++	dentry = ERR_PTR(-ESTALE);
++	/* it should never happen, but the file handle is unreliable */
++	if (unlikely(fh_len < Fh_tail))
++		goto out;
++	nsi_lock.sigen = fh[Fh_sigen];
++	nsi_lock.br_id = fh[Fh_br_id];
++
++	/* branch id may be wrapped around */
++	br = NULL;
++	if (unlikely(si_nfsd_read_lock(sb, &nsi_lock)))
++		goto out;
++	nsi_lock.force_lock = 1;
++
++	/* is this inode still cached? */
++	ino = decode_ino(fh + Fh_ino);
++	/* it should never happen */
++	if (unlikely(ino == AUFS_ROOT_INO))
++		goto out_unlock;
++
++	dir_ino = decode_ino(fh + Fh_dir_ino);
++	dentry = decode_by_ino(sb, ino, dir_ino);
++	if (IS_ERR(dentry))
++		goto out_unlock;
++	if (dentry)
++		goto accept;
++
++	/* is the parent dir cached? */
++	br = au_sbr(sb, nsi_lock.bindex);
++	au_lcnt_inc(&br->br_nfiles);
++	dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock);
++	if (IS_ERR(dentry))
++		goto out_unlock;
++	if (dentry)
++		goto accept;
++
++	/* lookup path */
++	dentry = decode_by_path(sb, ino, fh, fh_len, &nsi_lock);
++	if (IS_ERR(dentry))
++		goto out_unlock;
++	if (unlikely(!dentry))
++		/* todo?: make it ESTALE */
++		goto out_unlock;
++
++accept:
++	if (!au_digen_test(dentry, au_sigen(sb))
++	    && d_inode(dentry)->i_generation == fh[Fh_igen])
++		goto out_unlock; /* success */
++
++	dput(dentry);
++	dentry = ERR_PTR(-ESTALE);
++out_unlock:
++	if (br)
++		au_lcnt_dec(&br->br_nfiles);
++	si_read_unlock(sb);
++out:
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++#if 0 /* reserved for future use */
++/* support subtreecheck option */
++static struct dentry *aufs_fh_to_parent(struct super_block *sb, struct fid *fid,
++					int fh_len, int fh_type)
++{
++	struct dentry *parent;
++	__u32 *fh = fid->raw;
++	ino_t dir_ino;
++
++	dir_ino = decode_ino(fh + Fh_dir_ino);
++	parent = decode_by_ino(sb, dir_ino, 0);
++	if (IS_ERR(parent))
++		goto out;
++	if (!parent)
++		parent = decode_by_path(sb, au_br_index(sb, fh[Fh_br_id]),
++					dir_ino, fh, fh_len);
++
++out:
++	AuTraceErrPtr(parent);
++	return parent;
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static int aufs_encode_fh(struct inode *inode, __u32 *fh, int *max_len,
++			  struct inode *dir)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct super_block *sb, *h_sb;
++	struct dentry *dentry, *parent, *h_parent;
++	struct inode *h_dir;
++	struct au_branch *br;
++
++	err = -ENOSPC;
++	if (unlikely(*max_len <= Fh_tail)) {
++		AuWarn1("NFSv2 client (max_len %d)?\n", *max_len);
++		goto out;
++	}
++
++	err = FILEID_ROOT;
++	if (inode->i_ino == AUFS_ROOT_INO) {
++		AuDebugOn(inode->i_ino != AUFS_ROOT_INO);
++		goto out;
++	}
++
++	h_parent = NULL;
++	sb = inode->i_sb;
++	err = si_read_lock(sb, AuLock_FLUSH);
++	if (unlikely(err))
++		goto out;
++
++#ifdef CONFIG_AUFS_DEBUG
++	if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
++		AuWarn1("NFS-exporting requires xino\n");
++#endif
++	err = -EIO;
++	parent = NULL;
++	ii_read_lock_child(inode);
++	bindex = au_ibtop(inode);
++	if (!dir) {
++		dentry = d_find_any_alias(inode);
++		if (unlikely(!dentry))
++			goto out_unlock;
++		AuDebugOn(au_test_anon(dentry));
++		parent = dget_parent(dentry);
++		dput(dentry);
++		if (unlikely(!parent))
++			goto out_unlock;
++		if (d_really_is_positive(parent))
++			dir = d_inode(parent);
++	}
++
++	ii_read_lock_parent(dir);
++	h_dir = au_h_iptr(dir, bindex);
++	ii_read_unlock(dir);
++	if (unlikely(!h_dir))
++		goto out_parent;
++	h_parent = d_find_any_alias(h_dir);
++	if (unlikely(!h_parent))
++		goto out_hparent;
++
++	err = -EPERM;
++	br = au_sbr(sb, bindex);
++	h_sb = au_br_sb(br);
++	if (unlikely(!h_sb->s_export_op)) {
++		AuErr1("%s branch is not exportable\n", au_sbtype(h_sb));
++		goto out_hparent;
++	}
++
++	fh[Fh_br_id] = br->br_id;
++	fh[Fh_sigen] = au_sigen(sb);
++	encode_ino(fh + Fh_ino, inode->i_ino);
++	encode_ino(fh + Fh_dir_ino, dir->i_ino);
++	fh[Fh_igen] = inode->i_generation;
++
++	*max_len -= Fh_tail;
++	fh[Fh_h_type] = exportfs_encode_fh(h_parent, (void *)(fh + Fh_tail),
++					   max_len,
++					   /*connectable or subtreecheck*/0);
++	err = fh[Fh_h_type];
++	*max_len += Fh_tail;
++	/* todo: macros? */
++	if (err != FILEID_INVALID)
++		err = 99;
++	else
++		AuWarn1("%s encode_fh failed\n", au_sbtype(h_sb));
++
++out_hparent:
++	dput(h_parent);
++out_parent:
++	dput(parent);
++out_unlock:
++	ii_read_unlock(inode);
++	si_read_unlock(sb);
++out:
++	if (unlikely(err < 0))
++		err = FILEID_INVALID;
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int aufs_commit_metadata(struct inode *inode)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct super_block *sb;
++	struct inode *h_inode;
++	int (*f)(struct inode *inode);
++
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++	ii_write_lock_child(inode);
++	bindex = au_ibtop(inode);
++	AuDebugOn(bindex < 0);
++	h_inode = au_h_iptr(inode, bindex);
++
++	f = h_inode->i_sb->s_export_op->commit_metadata;
++	if (f)
++		err = f(h_inode);
++	else {
++		struct writeback_control wbc = {
++			.sync_mode	= WB_SYNC_ALL,
++			.nr_to_write	= 0 /* metadata only */
++		};
++
++		err = sync_inode(h_inode, &wbc);
++	}
++
++	au_cpup_attr_timesizes(inode);
++	ii_write_unlock(inode);
++	si_read_unlock(sb);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct export_operations aufs_export_op = {
++	.fh_to_dentry		= aufs_fh_to_dentry,
++	/* .fh_to_parent	= aufs_fh_to_parent, */
++	.encode_fh		= aufs_encode_fh,
++	.commit_metadata	= aufs_commit_metadata
++};
++
++void au_export_init(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++	__u32 u;
++
++	BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS)
++			 && IS_MODULE(CONFIG_EXPORTFS),
++			 AUFS_NAME ": unsupported configuration "
++			 "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y");
++
++	sb->s_export_op = &aufs_export_op;
++	sbinfo = au_sbi(sb);
++	sbinfo->si_xigen = NULL;
++	get_random_bytes(&u, sizeof(u));
++	BUILD_BUG_ON(sizeof(u) != sizeof(int));
++	atomic_set(&sbinfo->si_xigen_next, u);
++}
+diff -Nurp linux-5.4/fs/aufs/fhsm.c linux-5.4-aufs/fs/aufs/fhsm.c
+--- linux-5.4/fs/aufs/fhsm.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/fhsm.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,413 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2011-2019 Junjiro R. Okajima
++ */
++
++/*
++ * File-based Hierarchy Storage Management
++ */
++
++#include <linux/anon_inodes.h>
++#include <linux/poll.h>
++#include <linux/seq_file.h>
++#include <linux/statfs.h>
++#include "aufs.h"
++
++static aufs_bindex_t au_fhsm_bottom(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	SiMustAnyLock(sb);
++
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	AuDebugOn(!fhsm);
++	return fhsm->fhsm_bottom;
++}
++
++void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex)
++{
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	AuDebugOn(!fhsm);
++	fhsm->fhsm_bottom = bindex;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_fhsm_test_jiffy(struct au_sbinfo *sbinfo, struct au_branch *br)
++{
++	struct au_br_fhsm *bf;
++
++	bf = br->br_fhsm;
++	MtxMustLock(&bf->bf_lock);
++
++	return !bf->bf_readable
++		|| time_after(jiffies,
++			      bf->bf_jiffy + sbinfo->si_fhsm.fhsm_expire);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void au_fhsm_notify(struct super_block *sb, int val)
++{
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	SiMustAnyLock(sb);
++
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	if (au_fhsm_pid(fhsm)
++	    && atomic_read(&fhsm->fhsm_readable) != -1) {
++		atomic_set(&fhsm->fhsm_readable, val);
++		if (val)
++			wake_up(&fhsm->fhsm_wqh);
++	}
++}
++
++static int au_fhsm_stfs(struct super_block *sb, aufs_bindex_t bindex,
++			struct aufs_stfs *rstfs, int do_lock, int do_notify)
++{
++	int err;
++	struct au_branch *br;
++	struct au_br_fhsm *bf;
++
++	br = au_sbr(sb, bindex);
++	AuDebugOn(au_br_rdonly(br));
++	bf = br->br_fhsm;
++	AuDebugOn(!bf);
++
++	if (do_lock)
++		mutex_lock(&bf->bf_lock);
++	else
++		MtxMustLock(&bf->bf_lock);
++
++	/* sb->s_root for NFS is unreliable */
++	err = au_br_stfs(br, &bf->bf_stfs);
++	if (unlikely(err)) {
++		AuErr1("FHSM failed (%d), b%d, ignored.\n", bindex, err);
++		goto out;
++	}
++
++	bf->bf_jiffy = jiffies;
++	bf->bf_readable = 1;
++	if (do_notify)
++		au_fhsm_notify(sb, /*val*/1);
++	if (rstfs)
++		*rstfs = bf->bf_stfs;
++
++out:
++	if (do_lock)
++		mutex_unlock(&bf->bf_lock);
++	au_fhsm_notify(sb, /*val*/1);
++
++	return err;
++}
++
++void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++	struct au_branch *br;
++	struct au_br_fhsm *bf;
++
++	AuDbg("b%d, force %d\n", bindex, force);
++	SiMustAnyLock(sb);
++
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	if (!au_ftest_si(sbinfo, FHSM)
++	    || fhsm->fhsm_bottom == bindex)
++		return;
++
++	br = au_sbr(sb, bindex);
++	bf = br->br_fhsm;
++	AuDebugOn(!bf);
++	mutex_lock(&bf->bf_lock);
++	if (force
++	    || au_fhsm_pid(fhsm)
++	    || au_fhsm_test_jiffy(sbinfo, br))
++		err = au_fhsm_stfs(sb, bindex, /*rstfs*/NULL, /*do_lock*/0,
++				  /*do_notify*/1);
++	mutex_unlock(&bf->bf_lock);
++}
++
++void au_fhsm_wrote_all(struct super_block *sb, int force)
++{
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	/* exclude the bottom */
++	bbot = au_fhsm_bottom(sb);
++	for (bindex = 0; bindex < bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_fhsm(br->br_perm))
++			au_fhsm_wrote(sb, bindex, force);
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++static __poll_t au_fhsm_poll(struct file *file, struct poll_table_struct *wait)
++{
++	__poll_t mask;
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	mask = 0;
++	sbinfo = file->private_data;
++	fhsm = &sbinfo->si_fhsm;
++	poll_wait(file, &fhsm->fhsm_wqh, wait);
++	if (atomic_read(&fhsm->fhsm_readable))
++		mask = EPOLLIN /* | EPOLLRDNORM */;
++
++	if (!mask)
++		AuDbg("mask 0x%x\n", mask);
++	return mask;
++}
++
++static int au_fhsm_do_read_one(struct aufs_stbr __user *stbr,
++			      struct aufs_stfs *stfs, __s16 brid)
++{
++	int err;
++
++	err = copy_to_user(&stbr->stfs, stfs, sizeof(*stfs));
++	if (!err)
++		err = __put_user(brid, &stbr->brid);
++	if (unlikely(err))
++		err = -EFAULT;
++
++	return err;
++}
++
++static ssize_t au_fhsm_do_read(struct super_block *sb,
++			       struct aufs_stbr __user *stbr, size_t count)
++{
++	ssize_t err;
++	int nstbr;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++	struct au_br_fhsm *bf;
++
++	/* except the bottom branch */
++	err = 0;
++	nstbr = 0;
++	bbot = au_fhsm_bottom(sb);
++	for (bindex = 0; !err && bindex < bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (!au_br_fhsm(br->br_perm))
++			continue;
++
++		bf = br->br_fhsm;
++		mutex_lock(&bf->bf_lock);
++		if (bf->bf_readable) {
++			err = -EFAULT;
++			if (count >= sizeof(*stbr))
++				err = au_fhsm_do_read_one(stbr++, &bf->bf_stfs,
++							  br->br_id);
++			if (!err) {
++				bf->bf_readable = 0;
++				count -= sizeof(*stbr);
++				nstbr++;
++			}
++		}
++		mutex_unlock(&bf->bf_lock);
++	}
++	if (!err)
++		err = sizeof(*stbr) * nstbr;
++
++	return err;
++}
++
++static ssize_t au_fhsm_read(struct file *file, char __user *buf, size_t count,
++			   loff_t *pos)
++{
++	ssize_t err;
++	int readable;
++	aufs_bindex_t nfhsm, bindex, bbot;
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++	struct au_branch *br;
++	struct super_block *sb;
++
++	err = 0;
++	sbinfo = file->private_data;
++	fhsm = &sbinfo->si_fhsm;
++need_data:
++	spin_lock_irq(&fhsm->fhsm_wqh.lock);
++	if (!atomic_read(&fhsm->fhsm_readable)) {
++		if (vfsub_file_flags(file) & O_NONBLOCK)
++			err = -EAGAIN;
++		else
++			err = wait_event_interruptible_locked_irq
++				(fhsm->fhsm_wqh,
++				 atomic_read(&fhsm->fhsm_readable));
++	}
++	spin_unlock_irq(&fhsm->fhsm_wqh.lock);
++	if (unlikely(err))
++		goto out;
++
++	/* sb may already be dead */
++	au_rw_read_lock(&sbinfo->si_rwsem);
++	readable = atomic_read(&fhsm->fhsm_readable);
++	if (readable > 0) {
++		sb = sbinfo->si_sb;
++		AuDebugOn(!sb);
++		/* exclude the bottom branch */
++		nfhsm = 0;
++		bbot = au_fhsm_bottom(sb);
++		for (bindex = 0; bindex < bbot; bindex++) {
++			br = au_sbr(sb, bindex);
++			if (au_br_fhsm(br->br_perm))
++				nfhsm++;
++		}
++		err = -EMSGSIZE;
++		if (nfhsm * sizeof(struct aufs_stbr) <= count) {
++			atomic_set(&fhsm->fhsm_readable, 0);
++			err = au_fhsm_do_read(sbinfo->si_sb, (void __user *)buf,
++					     count);
++		}
++	}
++	au_rw_read_unlock(&sbinfo->si_rwsem);
++	if (!readable)
++		goto need_data;
++
++out:
++	return err;
++}
++
++static int au_fhsm_release(struct inode *inode, struct file *file)
++{
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	/* sb may already be dead */
++	sbinfo = file->private_data;
++	fhsm = &sbinfo->si_fhsm;
++	spin_lock(&fhsm->fhsm_spin);
++	fhsm->fhsm_pid = 0;
++	spin_unlock(&fhsm->fhsm_spin);
++	kobject_put(&sbinfo->si_kobj);
++
++	return 0;
++}
++
++static const struct file_operations au_fhsm_fops = {
++	.owner		= THIS_MODULE,
++	.llseek		= noop_llseek,
++	.read		= au_fhsm_read,
++	.poll		= au_fhsm_poll,
++	.release	= au_fhsm_release
++};
++
++int au_fhsm_fd(struct super_block *sb, int oflags)
++{
++	int err, fd;
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++
++	err = -EPERM;
++	if (unlikely(!capable(CAP_SYS_ADMIN)))
++		goto out;
++
++	err = -EINVAL;
++	if (unlikely(oflags & ~(O_CLOEXEC | O_NONBLOCK)))
++		goto out;
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	spin_lock(&fhsm->fhsm_spin);
++	if (!fhsm->fhsm_pid)
++		fhsm->fhsm_pid = current->pid;
++	else
++		err = -EBUSY;
++	spin_unlock(&fhsm->fhsm_spin);
++	if (unlikely(err))
++		goto out;
++
++	oflags |= O_RDONLY;
++	/* oflags |= FMODE_NONOTIFY; */
++	fd = anon_inode_getfd("[aufs_fhsm]", &au_fhsm_fops, sbinfo, oflags);
++	err = fd;
++	if (unlikely(fd < 0))
++		goto out_pid;
++
++	/* succeed regardless 'fhsm' status */
++	kobject_get(&sbinfo->si_kobj);
++	si_noflush_read_lock(sb);
++	if (au_ftest_si(sbinfo, FHSM))
++		au_fhsm_wrote_all(sb, /*force*/0);
++	si_read_unlock(sb);
++	goto out; /* success */
++
++out_pid:
++	spin_lock(&fhsm->fhsm_spin);
++	fhsm->fhsm_pid = 0;
++	spin_unlock(&fhsm->fhsm_spin);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_fhsm_br_alloc(struct au_branch *br)
++{
++	int err;
++
++	err = 0;
++	br->br_fhsm = kmalloc(sizeof(*br->br_fhsm), GFP_NOFS);
++	if (br->br_fhsm)
++		au_br_fhsm_init(br->br_fhsm);
++	else
++		err = -ENOMEM;
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_fhsm_fin(struct super_block *sb)
++{
++	au_fhsm_notify(sb, /*val*/-1);
++}
++
++void au_fhsm_init(struct au_sbinfo *sbinfo)
++{
++	struct au_fhsm *fhsm;
++
++	fhsm = &sbinfo->si_fhsm;
++	spin_lock_init(&fhsm->fhsm_spin);
++	init_waitqueue_head(&fhsm->fhsm_wqh);
++	atomic_set(&fhsm->fhsm_readable, 0);
++	fhsm->fhsm_expire
++		= msecs_to_jiffies(AUFS_FHSM_CACHE_DEF_SEC * MSEC_PER_SEC);
++	fhsm->fhsm_bottom = -1;
++}
++
++void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec)
++{
++	sbinfo->si_fhsm.fhsm_expire
++		= msecs_to_jiffies(sec * MSEC_PER_SEC);
++}
++
++void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo)
++{
++	unsigned int u;
++
++	if (!au_ftest_si(sbinfo, FHSM))
++		return;
++
++	u = jiffies_to_msecs(sbinfo->si_fhsm.fhsm_expire) / MSEC_PER_SEC;
++	if (u != AUFS_FHSM_CACHE_DEF_SEC)
++		seq_printf(seq, ",fhsm_sec=%u", u);
++}
+diff -Nurp linux-5.4/fs/aufs/file.c linux-5.4-aufs/fs/aufs/file.c
+--- linux-5.4/fs/aufs/file.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/file.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,850 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * handling file/dir, and address_space operation
++ */
++
++#ifdef CONFIG_AUFS_DEBUG
++#include <linux/migrate.h>
++#endif
++#include <linux/pagemap.h>
++#include "aufs.h"
++
++/* drop flags for writing */
++unsigned int au_file_roflags(unsigned int flags)
++{
++	flags &= ~(O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC);
++	flags |= O_RDONLY | O_NOATIME;
++	return flags;
++}
++
++/* common functions to regular file and dir */
++struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
++		       struct file *file, int force_wr)
++{
++	struct file *h_file;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct path h_path;
++	int err;
++
++	/* a race condition can happen between open and unlink/rmdir */
++	h_file = ERR_PTR(-ENOENT);
++	h_dentry = au_h_dptr(dentry, bindex);
++	if (au_test_nfsd() && (!h_dentry || d_is_negative(h_dentry)))
++		goto out;
++	h_inode = d_inode(h_dentry);
++	spin_lock(&h_dentry->d_lock);
++	err = (!d_unhashed(dentry) && d_unlinked(h_dentry))
++		/* || !d_inode(dentry)->i_nlink */
++		;
++	spin_unlock(&h_dentry->d_lock);
++	if (unlikely(err))
++		goto out;
++
++	sb = dentry->d_sb;
++	br = au_sbr(sb, bindex);
++	err = au_br_test_oflag(flags, br);
++	h_file = ERR_PTR(err);
++	if (unlikely(err))
++		goto out;
++
++	/* drop flags for writing */
++	if (au_test_ro(sb, bindex, d_inode(dentry))) {
++		if (force_wr && !(flags & O_WRONLY))
++			force_wr = 0;
++		flags = au_file_roflags(flags);
++		if (force_wr) {
++			h_file = ERR_PTR(-EROFS);
++			flags = au_file_roflags(flags);
++			if (unlikely(vfsub_native_ro(h_inode)
++				     || IS_APPEND(h_inode)))
++				goto out;
++			flags &= ~O_ACCMODE;
++			flags |= O_WRONLY;
++		}
++	}
++	flags &= ~O_CREAT;
++	au_lcnt_inc(&br->br_nfiles);
++	h_path.dentry = h_dentry;
++	h_path.mnt = au_br_mnt(br);
++	h_file = vfsub_dentry_open(&h_path, flags);
++	if (IS_ERR(h_file))
++		goto out_br;
++
++	if (flags & __FMODE_EXEC) {
++		err = deny_write_access(h_file);
++		if (unlikely(err)) {
++			fput(h_file);
++			h_file = ERR_PTR(err);
++			goto out_br;
++		}
++	}
++	fsnotify_open(h_file);
++	goto out; /* success */
++
++out_br:
++	au_lcnt_dec(&br->br_nfiles);
++out:
++	return h_file;
++}
++
++static int au_cmoo(struct dentry *dentry)
++{
++	int err, cmoo, matched;
++	unsigned int udba;
++	struct path h_path;
++	struct au_pin pin;
++	struct au_cp_generic cpg = {
++		.dentry	= dentry,
++		.bdst	= -1,
++		.bsrc	= -1,
++		.len	= -1,
++		.pin	= &pin,
++		.flags	= AuCpup_DTIME | AuCpup_HOPEN
++	};
++	struct inode *delegated;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++	struct au_fhsm *fhsm;
++	pid_t pid;
++	struct au_branch *br;
++	struct dentry *parent;
++	struct au_hinode *hdir;
++
++	DiMustWriteLock(dentry);
++	IiMustWriteLock(d_inode(dentry));
++
++	err = 0;
++	if (IS_ROOT(dentry))
++		goto out;
++	cpg.bsrc = au_dbtop(dentry);
++	if (!cpg.bsrc)
++		goto out;
++
++	sb = dentry->d_sb;
++	sbinfo = au_sbi(sb);
++	fhsm = &sbinfo->si_fhsm;
++	pid = au_fhsm_pid(fhsm);
++	rcu_read_lock();
++	matched = (pid
++		   && (current->pid == pid
++		       || rcu_dereference(current->real_parent)->pid == pid));
++	rcu_read_unlock();
++	if (matched)
++		goto out;
++
++	br = au_sbr(sb, cpg.bsrc);
++	cmoo = au_br_cmoo(br->br_perm);
++	if (!cmoo)
++		goto out;
++	if (!d_is_reg(dentry))
++		cmoo &= AuBrAttr_COO_ALL;
++	if (!cmoo)
++		goto out;
++
++	parent = dget_parent(dentry);
++	di_write_lock_parent(parent);
++	err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1);
++	cpg.bdst = err;
++	if (unlikely(err < 0)) {
++		err = 0;	/* there is no upper writable branch */
++		goto out_dgrade;
++	}
++	AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst);
++
++	/* do not respect the coo attrib for the target branch */
++	err = au_cpup_dirs(dentry, cpg.bdst);
++	if (unlikely(err))
++		goto out_dgrade;
++
++	di_downgrade_lock(parent, AuLock_IR);
++	udba = au_opt_udba(sb);
++	err = au_pin(&pin, dentry, cpg.bdst, udba,
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	if (unlikely(err))
++		goto out_parent;
++
++	err = au_sio_cpup_simple(&cpg);
++	au_unpin(&pin);
++	if (unlikely(err))
++		goto out_parent;
++	if (!(cmoo & AuBrWAttr_MOO))
++		goto out_parent; /* success */
++
++	err = au_pin(&pin, dentry, cpg.bsrc, udba,
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	if (unlikely(err))
++		goto out_parent;
++
++	h_path.mnt = au_br_mnt(br);
++	h_path.dentry = au_h_dptr(dentry, cpg.bsrc);
++	hdir = au_hi(d_inode(parent), cpg.bsrc);
++	delegated = NULL;
++	err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1);
++	au_unpin(&pin);
++	/* todo: keep h_dentry or not? */
++	if (unlikely(err == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal unlink\n");
++		iput(delegated);
++	}
++	if (unlikely(err)) {
++		pr_err("unlink %pd after coo failed (%d), ignored\n",
++		       dentry, err);
++		err = 0;
++	}
++	goto out_parent; /* success */
++
++out_dgrade:
++	di_downgrade_lock(parent, AuLock_IR);
++out_parent:
++	di_read_unlock(parent, AuLock_IR);
++	dput(parent);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_do_open(struct file *file, struct au_do_open_args *args)
++{
++	int err, aopen = args->aopen;
++	struct dentry *dentry;
++	struct au_finfo *finfo;
++
++	if (!aopen)
++		err = au_finfo_init(file, args->fidir);
++	else {
++		lockdep_off();
++		err = au_finfo_init(file, args->fidir);
++		lockdep_on();
++	}
++	if (unlikely(err))
++		goto out;
++
++	dentry = file->f_path.dentry;
++	AuDebugOn(IS_ERR_OR_NULL(dentry));
++	di_write_lock_child(dentry);
++	err = au_cmoo(dentry);
++	di_downgrade_lock(dentry, AuLock_IR);
++	if (!err) {
++		if (!aopen)
++			err = args->open(file, vfsub_file_flags(file), NULL);
++		else {
++			lockdep_off();
++			err = args->open(file, vfsub_file_flags(file),
++					 args->h_file);
++			lockdep_on();
++		}
++	}
++	di_read_unlock(dentry, AuLock_IR);
++
++	finfo = au_fi(file);
++	if (!err) {
++		finfo->fi_file = file;
++		au_hbl_add(&finfo->fi_hlist,
++			   &au_sbi(file->f_path.dentry->d_sb)->si_files);
++	}
++	if (!aopen)
++		fi_write_unlock(file);
++	else {
++		lockdep_off();
++		fi_write_unlock(file);
++		lockdep_on();
++	}
++	if (unlikely(err)) {
++		finfo->fi_hdir = NULL;
++		au_finfo_fin(file);
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_reopen_nondir(struct file *file)
++{
++	int err;
++	aufs_bindex_t btop;
++	struct dentry *dentry;
++	struct au_branch *br;
++	struct file *h_file, *h_file_tmp;
++
++	dentry = file->f_path.dentry;
++	btop = au_dbtop(dentry);
++	br = au_sbr(dentry->d_sb, btop);
++	h_file_tmp = NULL;
++	if (au_fbtop(file) == btop) {
++		h_file = au_hf_top(file);
++		if (file->f_mode == h_file->f_mode)
++			return 0; /* success */
++		h_file_tmp = h_file;
++		get_file(h_file_tmp);
++		au_lcnt_inc(&br->br_nfiles);
++		au_set_h_fptr(file, btop, NULL);
++	}
++	AuDebugOn(au_fi(file)->fi_hdir);
++	/*
++	 * it can happen
++	 * file exists on both of rw and ro
++	 * open --> dbtop and fbtop are both 0
++	 * prepend a branch as rw, "rw" become ro
++	 * remove rw/file
++	 * delete the top branch, "rw" becomes rw again
++	 *	--> dbtop is 1, fbtop is still 0
++	 * write --> fbtop is 0 but dbtop is 1
++	 */
++	/* AuDebugOn(au_fbtop(file) < btop); */
++
++	h_file = au_h_open(dentry, btop, vfsub_file_flags(file) & ~O_TRUNC,
++			   file, /*force_wr*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file)) {
++		if (h_file_tmp) {
++			/* revert */
++			au_set_h_fptr(file, btop, h_file_tmp);
++			h_file_tmp = NULL;
++		}
++		goto out; /* todo: close all? */
++	}
++
++	err = 0;
++	au_set_fbtop(file, btop);
++	au_set_h_fptr(file, btop, h_file);
++	au_update_figen(file);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++
++out:
++	if (h_file_tmp) {
++		fput(h_file_tmp);
++		au_lcnt_dec(&br->br_nfiles);
++	}
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_reopen_wh(struct file *file, aufs_bindex_t btgt,
++			struct dentry *hi_wh)
++{
++	int err;
++	aufs_bindex_t btop;
++	struct au_dinfo *dinfo;
++	struct dentry *h_dentry;
++	struct au_hdentry *hdp;
++
++	dinfo = au_di(file->f_path.dentry);
++	AuRwMustWriteLock(&dinfo->di_rwsem);
++
++	btop = dinfo->di_btop;
++	dinfo->di_btop = btgt;
++	hdp = au_hdentry(dinfo, btgt);
++	h_dentry = hdp->hd_dentry;
++	hdp->hd_dentry = hi_wh;
++	err = au_reopen_nondir(file);
++	hdp->hd_dentry = h_dentry;
++	dinfo->di_btop = btop;
++
++	return err;
++}
++
++static int au_ready_to_write_wh(struct file *file, loff_t len,
++				aufs_bindex_t bcpup, struct au_pin *pin)
++{
++	int err;
++	struct inode *inode, *h_inode;
++	struct dentry *h_dentry, *hi_wh;
++	struct au_cp_generic cpg = {
++		.dentry	= file->f_path.dentry,
++		.bdst	= bcpup,
++		.bsrc	= -1,
++		.len	= len,
++		.pin	= pin
++	};
++
++	au_update_dbtop(cpg.dentry);
++	inode = d_inode(cpg.dentry);
++	h_inode = NULL;
++	if (au_dbtop(cpg.dentry) <= bcpup
++	    && au_dbbot(cpg.dentry) >= bcpup) {
++		h_dentry = au_h_dptr(cpg.dentry, bcpup);
++		if (h_dentry && d_is_positive(h_dentry))
++			h_inode = d_inode(h_dentry);
++	}
++	hi_wh = au_hi_wh(inode, bcpup);
++	if (!hi_wh && !h_inode)
++		err = au_sio_cpup_wh(&cpg, file);
++	else
++		/* already copied-up after unlink */
++		err = au_reopen_wh(file, bcpup, hi_wh);
++
++	if (!err
++	    && (inode->i_nlink > 1
++		|| (inode->i_state & I_LINKABLE))
++	    && au_opt_test(au_mntflags(cpg.dentry->d_sb), PLINK))
++		au_plink_append(inode, bcpup, au_h_dptr(cpg.dentry, bcpup));
++
++	return err;
++}
++
++/*
++ * prepare the @file for writing.
++ */
++int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin)
++{
++	int err;
++	aufs_bindex_t dbtop;
++	struct dentry *parent;
++	struct inode *inode;
++	struct super_block *sb;
++	struct file *h_file;
++	struct au_cp_generic cpg = {
++		.dentry	= file->f_path.dentry,
++		.bdst	= -1,
++		.bsrc	= -1,
++		.len	= len,
++		.pin	= pin,
++		.flags	= AuCpup_DTIME
++	};
++
++	sb = cpg.dentry->d_sb;
++	inode = d_inode(cpg.dentry);
++	cpg.bsrc = au_fbtop(file);
++	err = au_test_ro(sb, cpg.bsrc, inode);
++	if (!err && (au_hf_top(file)->f_mode & FMODE_WRITE)) {
++		err = au_pin(pin, cpg.dentry, cpg.bsrc, AuOpt_UDBA_NONE,
++			     /*flags*/0);
++		goto out;
++	}
++
++	/* need to cpup or reopen */
++	parent = dget_parent(cpg.dentry);
++	di_write_lock_parent(parent);
++	err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
++	cpg.bdst = err;
++	if (unlikely(err < 0))
++		goto out_dgrade;
++	err = 0;
++
++	if (!d_unhashed(cpg.dentry) && !au_h_dptr(parent, cpg.bdst)) {
++		err = au_cpup_dirs(cpg.dentry, cpg.bdst);
++		if (unlikely(err))
++			goto out_dgrade;
++	}
++
++	err = au_pin(pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	if (unlikely(err))
++		goto out_dgrade;
++
++	dbtop = au_dbtop(cpg.dentry);
++	if (dbtop <= cpg.bdst)
++		cpg.bsrc = cpg.bdst;
++
++	if (dbtop <= cpg.bdst		/* just reopen */
++	    || !d_unhashed(cpg.dentry)	/* copyup and reopen */
++		) {
++		h_file = au_h_open_pre(cpg.dentry, cpg.bsrc, /*force_wr*/0);
++		if (IS_ERR(h_file))
++			err = PTR_ERR(h_file);
++		else {
++			di_downgrade_lock(parent, AuLock_IR);
++			if (dbtop > cpg.bdst)
++				err = au_sio_cpup_simple(&cpg);
++			if (!err)
++				err = au_reopen_nondir(file);
++			au_h_open_post(cpg.dentry, cpg.bsrc, h_file);
++		}
++	} else {			/* copyup as wh and reopen */
++		/*
++		 * since writable hfsplus branch is not supported,
++		 * h_open_pre/post() are unnecessary.
++		 */
++		err = au_ready_to_write_wh(file, len, cpg.bdst, pin);
++		di_downgrade_lock(parent, AuLock_IR);
++	}
++
++	if (!err) {
++		au_pin_set_parent_lflag(pin, /*lflag*/0);
++		goto out_dput; /* success */
++	}
++	au_unpin(pin);
++	goto out_unlock;
++
++out_dgrade:
++	di_downgrade_lock(parent, AuLock_IR);
++out_unlock:
++	di_read_unlock(parent, AuLock_IR);
++out_dput:
++	dput(parent);
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_do_flush(struct file *file, fl_owner_t id,
++		int (*flush)(struct file *file, fl_owner_t id))
++{
++	int err;
++	struct super_block *sb;
++	struct inode *inode;
++
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	si_noflush_read_lock(sb);
++	fi_read_lock(file);
++	ii_read_lock_child(inode);
++
++	err = flush(file, id);
++	au_cpup_attr_timesizes(inode);
++
++	ii_read_unlock(inode);
++	fi_read_unlock(file);
++	si_read_unlock(sb);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_file_refresh_by_inode(struct file *file, int *need_reopen)
++{
++	int err;
++	struct au_pin pin;
++	struct au_finfo *finfo;
++	struct dentry *parent, *hi_wh;
++	struct inode *inode;
++	struct super_block *sb;
++	struct au_cp_generic cpg = {
++		.dentry	= file->f_path.dentry,
++		.bdst	= -1,
++		.bsrc	= -1,
++		.len	= -1,
++		.pin	= &pin,
++		.flags	= AuCpup_DTIME
++	};
++
++	FiMustWriteLock(file);
++
++	err = 0;
++	finfo = au_fi(file);
++	sb = cpg.dentry->d_sb;
++	inode = d_inode(cpg.dentry);
++	cpg.bdst = au_ibtop(inode);
++	if (cpg.bdst == finfo->fi_btop || IS_ROOT(cpg.dentry))
++		goto out;
++
++	parent = dget_parent(cpg.dentry);
++	if (au_test_ro(sb, cpg.bdst, inode)) {
++		di_read_lock_parent(parent, !AuLock_IR);
++		err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
++		cpg.bdst = err;
++		di_read_unlock(parent, !AuLock_IR);
++		if (unlikely(err < 0))
++			goto out_parent;
++		err = 0;
++	}
++
++	di_read_lock_parent(parent, AuLock_IR);
++	hi_wh = au_hi_wh(inode, cpg.bdst);
++	if (!S_ISDIR(inode->i_mode)
++	    && au_opt_test(au_mntflags(sb), PLINK)
++	    && au_plink_test(inode)
++	    && !d_unhashed(cpg.dentry)
++	    && cpg.bdst < au_dbtop(cpg.dentry)) {
++		err = au_test_and_cpup_dirs(cpg.dentry, cpg.bdst);
++		if (unlikely(err))
++			goto out_unlock;
++
++		/* always superio. */
++		err = au_pin(&pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
++			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++		if (!err) {
++			err = au_sio_cpup_simple(&cpg);
++			au_unpin(&pin);
++		}
++	} else if (hi_wh) {
++		/* already copied-up after unlink */
++		err = au_reopen_wh(file, cpg.bdst, hi_wh);
++		*need_reopen = 0;
++	}
++
++out_unlock:
++	di_read_unlock(parent, AuLock_IR);
++out_parent:
++	dput(parent);
++out:
++	return err;
++}
++
++static void au_do_refresh_dir(struct file *file)
++{
++	aufs_bindex_t bindex, bbot, new_bindex, brid;
++	struct au_hfile *p, tmp, *q;
++	struct au_finfo *finfo;
++	struct super_block *sb;
++	struct au_fidir *fidir;
++
++	FiMustWriteLock(file);
++
++	sb = file->f_path.dentry->d_sb;
++	finfo = au_fi(file);
++	fidir = finfo->fi_hdir;
++	AuDebugOn(!fidir);
++	p = fidir->fd_hfile + finfo->fi_btop;
++	brid = p->hf_br->br_id;
++	bbot = fidir->fd_bbot;
++	for (bindex = finfo->fi_btop; bindex <= bbot; bindex++, p++) {
++		if (!p->hf_file)
++			continue;
++
++		new_bindex = au_br_index(sb, p->hf_br->br_id);
++		if (new_bindex == bindex)
++			continue;
++		if (new_bindex < 0) {
++			au_set_h_fptr(file, bindex, NULL);
++			continue;
++		}
++
++		/* swap two lower inode, and loop again */
++		q = fidir->fd_hfile + new_bindex;
++		tmp = *q;
++		*q = *p;
++		*p = tmp;
++		if (tmp.hf_file) {
++			bindex--;
++			p--;
++		}
++	}
++
++	p = fidir->fd_hfile;
++	if (!au_test_mmapped(file) && !d_unlinked(file->f_path.dentry)) {
++		bbot = au_sbbot(sb);
++		for (finfo->fi_btop = 0; finfo->fi_btop <= bbot;
++		     finfo->fi_btop++, p++)
++			if (p->hf_file) {
++				if (file_inode(p->hf_file))
++					break;
++				au_hfput(p, /*execed*/0);
++			}
++	} else {
++		bbot = au_br_index(sb, brid);
++		for (finfo->fi_btop = 0; finfo->fi_btop < bbot;
++		     finfo->fi_btop++, p++)
++			if (p->hf_file)
++				au_hfput(p, /*execed*/0);
++		bbot = au_sbbot(sb);
++	}
++
++	p = fidir->fd_hfile + bbot;
++	for (fidir->fd_bbot = bbot; fidir->fd_bbot >= finfo->fi_btop;
++	     fidir->fd_bbot--, p--)
++		if (p->hf_file) {
++			if (file_inode(p->hf_file))
++				break;
++			au_hfput(p, /*execed*/0);
++		}
++	AuDebugOn(fidir->fd_bbot < finfo->fi_btop);
++}
++
++/*
++ * after branch manipulating, refresh the file.
++ */
++static int refresh_file(struct file *file, int (*reopen)(struct file *file))
++{
++	int err, need_reopen, nbr;
++	aufs_bindex_t bbot, bindex;
++	struct dentry *dentry;
++	struct super_block *sb;
++	struct au_finfo *finfo;
++	struct au_hfile *hfile;
++
++	dentry = file->f_path.dentry;
++	sb = dentry->d_sb;
++	nbr = au_sbbot(sb) + 1;
++	finfo = au_fi(file);
++	if (!finfo->fi_hdir) {
++		hfile = &finfo->fi_htop;
++		AuDebugOn(!hfile->hf_file);
++		bindex = au_br_index(sb, hfile->hf_br->br_id);
++		AuDebugOn(bindex < 0);
++		if (bindex != finfo->fi_btop)
++			au_set_fbtop(file, bindex);
++	} else {
++		err = au_fidir_realloc(finfo, nbr, /*may_shrink*/0);
++		if (unlikely(err))
++			goto out;
++		au_do_refresh_dir(file);
++	}
++
++	err = 0;
++	need_reopen = 1;
++	if (!au_test_mmapped(file))
++		err = au_file_refresh_by_inode(file, &need_reopen);
++	if (finfo->fi_hdir)
++		/* harmless if err */
++		au_fidir_realloc(finfo, nbr, /*may_shrink*/1);
++	if (!err && need_reopen && !d_unlinked(dentry))
++		err = reopen(file);
++	if (!err) {
++		au_update_figen(file);
++		goto out; /* success */
++	}
++
++	/* error, close all lower files */
++	if (finfo->fi_hdir) {
++		bbot = au_fbbot_dir(file);
++		for (bindex = au_fbtop(file); bindex <= bbot; bindex++)
++			au_set_h_fptr(file, bindex, NULL);
++	}
++
++out:
++	return err;
++}
++
++/* common function to regular file and dir */
++int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
++			  int wlock, unsigned int fi_lsc)
++{
++	int err;
++	unsigned int sigen, figen;
++	aufs_bindex_t btop;
++	unsigned char pseudo_link;
++	struct dentry *dentry;
++	struct inode *inode;
++
++	err = 0;
++	dentry = file->f_path.dentry;
++	inode = d_inode(dentry);
++	sigen = au_sigen(dentry->d_sb);
++	fi_write_lock_nested(file, fi_lsc);
++	figen = au_figen(file);
++	if (!fi_lsc)
++		di_write_lock_child(dentry);
++	else
++		di_write_lock_child2(dentry);
++	btop = au_dbtop(dentry);
++	pseudo_link = (btop != au_ibtop(inode));
++	if (sigen == figen && !pseudo_link && au_fbtop(file) == btop) {
++		if (!wlock) {
++			di_downgrade_lock(dentry, AuLock_IR);
++			fi_downgrade_lock(file);
++		}
++		goto out; /* success */
++	}
++
++	AuDbg("sigen %d, figen %d\n", sigen, figen);
++	if (au_digen_test(dentry, sigen)) {
++		err = au_reval_dpath(dentry, sigen);
++		AuDebugOn(!err && au_digen_test(dentry, sigen));
++	}
++
++	if (!err)
++		err = refresh_file(file, reopen);
++	if (!err) {
++		if (!wlock) {
++			di_downgrade_lock(dentry, AuLock_IR);
++			fi_downgrade_lock(file);
++		}
++	} else {
++		di_write_unlock(dentry);
++		fi_write_unlock(file);
++	}
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* cf. aufs_nopage() */
++/* for madvise(2) */
++static int aufs_readpage(struct file *file __maybe_unused, struct page *page)
++{
++	unlock_page(page);
++	return 0;
++}
++
++/* it will never be called, but necessary to support O_DIRECT */
++static ssize_t aufs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
++{ BUG(); return 0; }
++
++/* they will never be called. */
++#ifdef CONFIG_AUFS_DEBUG
++static int aufs_write_begin(struct file *file, struct address_space *mapping,
++			    loff_t pos, unsigned len, unsigned flags,
++			    struct page **pagep, void **fsdata)
++{ AuUnsupport(); return 0; }
++static int aufs_write_end(struct file *file, struct address_space *mapping,
++			  loff_t pos, unsigned len, unsigned copied,
++			  struct page *page, void *fsdata)
++{ AuUnsupport(); return 0; }
++static int aufs_writepage(struct page *page, struct writeback_control *wbc)
++{ AuUnsupport(); return 0; }
++
++static int aufs_set_page_dirty(struct page *page)
++{ AuUnsupport(); return 0; }
++static void aufs_invalidatepage(struct page *page, unsigned int offset,
++				unsigned int length)
++{ AuUnsupport(); }
++static int aufs_releasepage(struct page *page, gfp_t gfp)
++{ AuUnsupport(); return 0; }
++#if 0 /* called by memory compaction regardless file */
++static int aufs_migratepage(struct address_space *mapping, struct page *newpage,
++			    struct page *page, enum migrate_mode mode)
++{ AuUnsupport(); return 0; }
++#endif
++static bool aufs_isolate_page(struct page *page, isolate_mode_t mode)
++{ AuUnsupport(); return true; }
++static void aufs_putback_page(struct page *page)
++{ AuUnsupport(); }
++static int aufs_launder_page(struct page *page)
++{ AuUnsupport(); return 0; }
++static int aufs_is_partially_uptodate(struct page *page,
++				      unsigned long from,
++				      unsigned long count)
++{ AuUnsupport(); return 0; }
++static void aufs_is_dirty_writeback(struct page *page, bool *dirty,
++				    bool *writeback)
++{ AuUnsupport(); }
++static int aufs_error_remove_page(struct address_space *mapping,
++				  struct page *page)
++{ AuUnsupport(); return 0; }
++static int aufs_swap_activate(struct swap_info_struct *sis, struct file *file,
++			      sector_t *span)
++{ AuUnsupport(); return 0; }
++static void aufs_swap_deactivate(struct file *file)
++{ AuUnsupport(); }
++#endif /* CONFIG_AUFS_DEBUG */
++
++const struct address_space_operations aufs_aop = {
++	.readpage		= aufs_readpage,
++	.direct_IO		= aufs_direct_IO,
++#ifdef CONFIG_AUFS_DEBUG
++	.writepage		= aufs_writepage,
++	/* no writepages, because of writepage */
++	.set_page_dirty		= aufs_set_page_dirty,
++	/* no readpages, because of readpage */
++	.write_begin		= aufs_write_begin,
++	.write_end		= aufs_write_end,
++	/* no bmap, no block device */
++	.invalidatepage		= aufs_invalidatepage,
++	.releasepage		= aufs_releasepage,
++	/* is fallback_migrate_page ok? */
++	/* .migratepage		= aufs_migratepage, */
++	.isolate_page		= aufs_isolate_page,
++	.putback_page		= aufs_putback_page,
++	.launder_page		= aufs_launder_page,
++	.is_partially_uptodate	= aufs_is_partially_uptodate,
++	.is_dirty_writeback	= aufs_is_dirty_writeback,
++	.error_remove_page	= aufs_error_remove_page,
++	.swap_activate		= aufs_swap_activate,
++	.swap_deactivate	= aufs_swap_deactivate
++#endif /* CONFIG_AUFS_DEBUG */
++};
+diff -Nurp linux-5.4/fs/aufs/file.h linux-5.4-aufs/fs/aufs/file.h
+--- linux-5.4/fs/aufs/file.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/file.h	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,329 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * file operations
++ */
++
++#ifndef __AUFS_FILE_H__
++#define __AUFS_FILE_H__
++
++#ifdef __KERNEL__
++
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/mm_types.h>
++#include <linux/poll.h>
++#include "rwsem.h"
++
++struct au_branch;
++struct au_hfile {
++	struct file		*hf_file;
++	struct au_branch	*hf_br;
++};
++
++struct au_vdir;
++struct au_fidir {
++	aufs_bindex_t		fd_bbot;
++	aufs_bindex_t		fd_nent;
++	struct au_vdir		*fd_vdir_cache;
++	struct au_hfile		fd_hfile[];
++};
++
++static inline int au_fidir_sz(int nent)
++{
++	AuDebugOn(nent < 0);
++	return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent;
++}
++
++struct au_finfo {
++	atomic_t		fi_generation;
++
++	struct au_rwsem		fi_rwsem;
++	aufs_bindex_t		fi_btop;
++
++	/* do not union them */
++	struct {				/* for non-dir */
++		struct au_hfile			fi_htop;
++		atomic_t			fi_mmapped;
++	};
++	struct au_fidir		*fi_hdir;	/* for dir only */
++
++	struct hlist_bl_node	fi_hlist;
++	struct file		*fi_file;	/* very ugly */
++	struct rcu_head		rcu;
++} ____cacheline_aligned_in_smp;
++
++/* ---------------------------------------------------------------------- */
++
++/* file.c */
++extern const struct address_space_operations aufs_aop;
++unsigned int au_file_roflags(unsigned int flags);
++struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
++		       struct file *file, int force_wr);
++struct au_do_open_args {
++	int		aopen;
++	int		(*open)(struct file *file, int flags,
++				struct file *h_file);
++	struct au_fidir	*fidir;
++	struct file	*h_file;
++};
++int au_do_open(struct file *file, struct au_do_open_args *args);
++int au_reopen_nondir(struct file *file);
++struct au_pin;
++int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin);
++int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
++			  int wlock, unsigned int fi_lsc);
++int au_do_flush(struct file *file, fl_owner_t id,
++		int (*flush)(struct file *file, fl_owner_t id));
++
++/* poll.c */
++#ifdef CONFIG_AUFS_POLL
++__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt);
++#endif
++
++#ifdef CONFIG_AUFS_BR_HFSPLUS
++/* hfsplus.c */
++struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
++			   int force_wr);
++void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
++		    struct file *h_file);
++#else
++AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry,
++       aufs_bindex_t bindex, int force_wr)
++AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex,
++	   struct file *h_file);
++#endif
++
++/* f_op.c */
++extern const struct file_operations aufs_file_fop;
++int au_do_open_nondir(struct file *file, int flags, struct file *h_file);
++int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file);
++struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc);
++
++/* finfo.c */
++void au_hfput(struct au_hfile *hf, int execed);
++void au_set_h_fptr(struct file *file, aufs_bindex_t bindex,
++		   struct file *h_file);
++
++void au_update_figen(struct file *file);
++struct au_fidir *au_fidir_alloc(struct super_block *sb);
++int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink);
++
++void au_fi_init_once(void *_fi);
++void au_finfo_fin(struct file *file);
++int au_finfo_init(struct file *file, struct au_fidir *fidir);
++
++/* ioctl.c */
++long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg);
++#ifdef CONFIG_COMPAT
++long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
++			   unsigned long arg);
++long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
++			      unsigned long arg);
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct au_finfo *au_fi(struct file *file)
++{
++	return file->private_data;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define fi_read_lock(f)	au_rw_read_lock(&au_fi(f)->fi_rwsem)
++#define fi_write_lock(f)	au_rw_write_lock(&au_fi(f)->fi_rwsem)
++#define fi_read_trylock(f)	au_rw_read_trylock(&au_fi(f)->fi_rwsem)
++#define fi_write_trylock(f)	au_rw_write_trylock(&au_fi(f)->fi_rwsem)
++/*
++#define fi_read_trylock_nested(f) \
++	au_rw_read_trylock_nested(&au_fi(f)->fi_rwsem)
++#define fi_write_trylock_nested(f) \
++	au_rw_write_trylock_nested(&au_fi(f)->fi_rwsem)
++*/
++
++#define fi_read_unlock(f)	au_rw_read_unlock(&au_fi(f)->fi_rwsem)
++#define fi_write_unlock(f)	au_rw_write_unlock(&au_fi(f)->fi_rwsem)
++#define fi_downgrade_lock(f)	au_rw_dgrade_lock(&au_fi(f)->fi_rwsem)
++
++/* lock subclass for finfo */
++enum {
++	AuLsc_FI_1,
++	AuLsc_FI_2
++};
++
++static inline void fi_read_lock_nested(struct file *f, unsigned int lsc)
++{
++	au_rw_read_lock_nested(&au_fi(f)->fi_rwsem, lsc);
++}
++
++static inline void fi_write_lock_nested(struct file *f, unsigned int lsc)
++{
++	au_rw_write_lock_nested(&au_fi(f)->fi_rwsem, lsc);
++}
++
++/*
++ * fi_read_lock_1, fi_write_lock_1,
++ * fi_read_lock_2, fi_write_lock_2
++ */
++#define AuReadLockFunc(name) \
++static inline void fi_read_lock_##name(struct file *f) \
++{ fi_read_lock_nested(f, AuLsc_FI_##name); }
++
++#define AuWriteLockFunc(name) \
++static inline void fi_write_lock_##name(struct file *f) \
++{ fi_write_lock_nested(f, AuLsc_FI_##name); }
++
++#define AuRWLockFuncs(name) \
++	AuReadLockFunc(name) \
++	AuWriteLockFunc(name)
++
++AuRWLockFuncs(1);
++AuRWLockFuncs(2);
++
++#undef AuReadLockFunc
++#undef AuWriteLockFunc
++#undef AuRWLockFuncs
++
++#define FiMustNoWaiters(f)	AuRwMustNoWaiters(&au_fi(f)->fi_rwsem)
++#define FiMustAnyLock(f)	AuRwMustAnyLock(&au_fi(f)->fi_rwsem)
++#define FiMustWriteLock(f)	AuRwMustWriteLock(&au_fi(f)->fi_rwsem)
++
++/* ---------------------------------------------------------------------- */
++
++/* todo: hard/soft set? */
++static inline aufs_bindex_t au_fbtop(struct file *file)
++{
++	FiMustAnyLock(file);
++	return au_fi(file)->fi_btop;
++}
++
++static inline aufs_bindex_t au_fbbot_dir(struct file *file)
++{
++	FiMustAnyLock(file);
++	AuDebugOn(!au_fi(file)->fi_hdir);
++	return au_fi(file)->fi_hdir->fd_bbot;
++}
++
++static inline struct au_vdir *au_fvdir_cache(struct file *file)
++{
++	FiMustAnyLock(file);
++	AuDebugOn(!au_fi(file)->fi_hdir);
++	return au_fi(file)->fi_hdir->fd_vdir_cache;
++}
++
++static inline void au_set_fbtop(struct file *file, aufs_bindex_t bindex)
++{
++	FiMustWriteLock(file);
++	au_fi(file)->fi_btop = bindex;
++}
++
++static inline void au_set_fbbot_dir(struct file *file, aufs_bindex_t bindex)
++{
++	FiMustWriteLock(file);
++	AuDebugOn(!au_fi(file)->fi_hdir);
++	au_fi(file)->fi_hdir->fd_bbot = bindex;
++}
++
++static inline void au_set_fvdir_cache(struct file *file,
++				      struct au_vdir *vdir_cache)
++{
++	FiMustWriteLock(file);
++	AuDebugOn(!au_fi(file)->fi_hdir);
++	au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache;
++}
++
++static inline struct file *au_hf_top(struct file *file)
++{
++	FiMustAnyLock(file);
++	AuDebugOn(au_fi(file)->fi_hdir);
++	return au_fi(file)->fi_htop.hf_file;
++}
++
++static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex)
++{
++	FiMustAnyLock(file);
++	AuDebugOn(!au_fi(file)->fi_hdir);
++	return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file;
++}
++
++/* todo: memory barrier? */
++static inline unsigned int au_figen(struct file *f)
++{
++	return atomic_read(&au_fi(f)->fi_generation);
++}
++
++static inline void au_set_mmapped(struct file *f)
++{
++	if (atomic_inc_return(&au_fi(f)->fi_mmapped))
++		return;
++	pr_warn("fi_mmapped wrapped around\n");
++	while (!atomic_inc_return(&au_fi(f)->fi_mmapped))
++		;
++}
++
++static inline void au_unset_mmapped(struct file *f)
++{
++	atomic_dec(&au_fi(f)->fi_mmapped);
++}
++
++static inline int au_test_mmapped(struct file *f)
++{
++	return atomic_read(&au_fi(f)->fi_mmapped);
++}
++
++/* customize vma->vm_file */
++
++static inline void au_do_vm_file_reset(struct vm_area_struct *vma,
++				       struct file *file)
++{
++	struct file *f;
++
++	f = vma->vm_file;
++	get_file(file);
++	vma->vm_file = file;
++	fput(f);
++}
++
++#ifdef CONFIG_MMU
++#define AuDbgVmRegion(file, vma) do {} while (0)
++
++static inline void au_vm_file_reset(struct vm_area_struct *vma,
++				    struct file *file)
++{
++	au_do_vm_file_reset(vma, file);
++}
++#else
++#define AuDbgVmRegion(file, vma) \
++	AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file))
++
++static inline void au_vm_file_reset(struct vm_area_struct *vma,
++				    struct file *file)
++{
++	struct file *f;
++
++	au_do_vm_file_reset(vma, file);
++	f = vma->vm_region->vm_file;
++	get_file(file);
++	vma->vm_region->vm_file = file;
++	fput(f);
++}
++#endif /* CONFIG_MMU */
++
++/* handle vma->vm_prfile */
++static inline void au_vm_prfile_set(struct vm_area_struct *vma,
++				    struct file *file)
++{
++	get_file(file);
++	vma->vm_prfile = file;
++#ifndef CONFIG_MMU
++	get_file(file);
++	vma->vm_region->vm_prfile = file;
++#endif
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_FILE_H__ */
+diff -Nurp linux-5.4/fs/aufs/finfo.c linux-5.4-aufs/fs/aufs/finfo.c
+--- linux-5.4/fs/aufs/finfo.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/finfo.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,136 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * file private data
++ */
++
++#include "aufs.h"
++
++void au_hfput(struct au_hfile *hf, int execed)
++{
++	if (execed)
++		allow_write_access(hf->hf_file);
++	fput(hf->hf_file);
++	hf->hf_file = NULL;
++	au_lcnt_dec(&hf->hf_br->br_nfiles);
++	hf->hf_br = NULL;
++}
++
++void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val)
++{
++	struct au_finfo *finfo = au_fi(file);
++	struct au_hfile *hf;
++	struct au_fidir *fidir;
++
++	fidir = finfo->fi_hdir;
++	if (!fidir) {
++		AuDebugOn(finfo->fi_btop != bindex);
++		hf = &finfo->fi_htop;
++	} else
++		hf = fidir->fd_hfile + bindex;
++
++	if (hf && hf->hf_file)
++		au_hfput(hf, vfsub_file_execed(file));
++	if (val) {
++		FiMustWriteLock(file);
++		AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry));
++		hf->hf_file = val;
++		hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex);
++	}
++}
++
++void au_update_figen(struct file *file)
++{
++	atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry));
++	/* smp_mb(); */ /* atomic_set */
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_fidir *au_fidir_alloc(struct super_block *sb)
++{
++	struct au_fidir *fidir;
++	int nbr;
++
++	nbr = au_sbbot(sb) + 1;
++	if (nbr < 2)
++		nbr = 2; /* initial allocate for 2 branches */
++	fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS);
++	if (fidir) {
++		fidir->fd_bbot = -1;
++		fidir->fd_nent = nbr;
++	}
++
++	return fidir;
++}
++
++int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink)
++{
++	int err;
++	struct au_fidir *fidir, *p;
++
++	AuRwMustWriteLock(&finfo->fi_rwsem);
++	fidir = finfo->fi_hdir;
++	AuDebugOn(!fidir);
++
++	err = -ENOMEM;
++	p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr),
++			 GFP_NOFS, may_shrink);
++	if (p) {
++		p->fd_nent = nbr;
++		finfo->fi_hdir = p;
++		err = 0;
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_finfo_fin(struct file *file)
++{
++	struct au_finfo *finfo;
++
++	au_lcnt_dec(&au_sbi(file->f_path.dentry->d_sb)->si_nfiles);
++
++	finfo = au_fi(file);
++	AuDebugOn(finfo->fi_hdir);
++	AuRwDestroy(&finfo->fi_rwsem);
++	au_cache_free_finfo(finfo);
++}
++
++void au_fi_init_once(void *_finfo)
++{
++	struct au_finfo *finfo = _finfo;
++
++	au_rw_init(&finfo->fi_rwsem);
++}
++
++int au_finfo_init(struct file *file, struct au_fidir *fidir)
++{
++	int err;
++	struct au_finfo *finfo;
++	struct dentry *dentry;
++
++	err = -ENOMEM;
++	dentry = file->f_path.dentry;
++	finfo = au_cache_alloc_finfo();
++	if (unlikely(!finfo))
++		goto out;
++
++	err = 0;
++	au_lcnt_inc(&au_sbi(dentry->d_sb)->si_nfiles);
++	au_rw_write_lock(&finfo->fi_rwsem);
++	finfo->fi_btop = -1;
++	finfo->fi_hdir = fidir;
++	atomic_set(&finfo->fi_generation, au_digen(dentry));
++	/* smp_mb(); */ /* atomic_set */
++
++	file->private_data = finfo;
++
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/f_op.c linux-5.4-aufs/fs/aufs/f_op.c
+--- linux-5.4/fs/aufs/f_op.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/f_op.c	2019-11-28 01:25:59.064925618 +0200
+@@ -0,0 +1,806 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * file and vm operations
++ */
++
++#include <linux/aio.h>
++#include <linux/fs_stack.h>
++#include <linux/mman.h>
++#include <linux/security.h>
++#include "aufs.h"
++
++int au_do_open_nondir(struct file *file, int flags, struct file *h_file)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct dentry *dentry, *h_dentry;
++	struct au_finfo *finfo;
++	struct inode *h_inode;
++
++	FiMustWriteLock(file);
++
++	err = 0;
++	dentry = file->f_path.dentry;
++	AuDebugOn(IS_ERR_OR_NULL(dentry));
++	finfo = au_fi(file);
++	memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop));
++	atomic_set(&finfo->fi_mmapped, 0);
++	bindex = au_dbtop(dentry);
++	if (!h_file) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
++		if (unlikely(err))
++			goto out;
++		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
++		if (IS_ERR(h_file)) {
++			err = PTR_ERR(h_file);
++			goto out;
++		}
++	} else {
++		h_dentry = h_file->f_path.dentry;
++		err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
++		if (unlikely(err))
++			goto out;
++		/* br ref is already inc-ed */
++	}
++
++	if ((flags & __O_TMPFILE)
++	    && !(flags & O_EXCL)) {
++		h_inode = file_inode(h_file);
++		spin_lock(&h_inode->i_lock);
++		h_inode->i_state |= I_LINKABLE;
++		spin_unlock(&h_inode->i_lock);
++	}
++	au_set_fbtop(file, bindex);
++	au_set_h_fptr(file, bindex, h_file);
++	au_update_figen(file);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++
++out:
++	return err;
++}
++
++static int aufs_open_nondir(struct inode *inode __maybe_unused,
++			    struct file *file)
++{
++	int err;
++	struct super_block *sb;
++	struct au_do_open_args args = {
++		.open	= au_do_open_nondir
++	};
++
++	AuDbg("%pD, f_flags 0x%x, f_mode 0x%x\n",
++	      file, vfsub_file_flags(file), file->f_mode);
++
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	err = au_do_open(file, &args);
++	si_read_unlock(sb);
++	return err;
++}
++
++int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file)
++{
++	struct au_finfo *finfo;
++	aufs_bindex_t bindex;
++
++	finfo = au_fi(file);
++	au_hbl_del(&finfo->fi_hlist,
++		   &au_sbi(file->f_path.dentry->d_sb)->si_files);
++	bindex = finfo->fi_btop;
++	if (bindex >= 0)
++		au_set_h_fptr(file, bindex, NULL);
++
++	au_finfo_fin(file);
++	return 0;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_do_flush_nondir(struct file *file, fl_owner_t id)
++{
++	int err;
++	struct file *h_file;
++
++	err = 0;
++	h_file = au_hf_top(file);
++	if (h_file)
++		err = vfsub_flush(h_file, id);
++	return err;
++}
++
++static int aufs_flush_nondir(struct file *file, fl_owner_t id)
++{
++	return au_do_flush(file, id, au_do_flush_nondir);
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * read and write functions acquire [fdi]_rwsem once, but release before
++ * mmap_sem. This is because to stop a race condition between mmap(2).
++ * Releasing these aufs-rwsem should be safe, no branch-management (by keeping
++ * si_rwsem), no harmful copy-up should happen. Actually copy-up may happen in
++ * read functions after [fdi]_rwsem are released, but it should be harmless.
++ */
++
++/* Callers should call au_read_post() or fput() in the end */
++struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc)
++{
++	struct file *h_file;
++	int err;
++
++	err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/0, lsc);
++	if (!err) {
++		di_read_unlock(file->f_path.dentry, AuLock_IR);
++		h_file = au_hf_top(file);
++		get_file(h_file);
++		if (!keep_fi)
++			fi_read_unlock(file);
++	} else
++		h_file = ERR_PTR(err);
++
++	return h_file;
++}
++
++static void au_read_post(struct inode *inode, struct file *h_file)
++{
++	/* update without lock, I don't think it a problem */
++	fsstack_copy_attr_atime(inode, file_inode(h_file));
++	fput(h_file);
++}
++
++struct au_write_pre {
++	/* input */
++	unsigned int lsc;
++
++	/* output */
++	blkcnt_t blks;
++	aufs_bindex_t btop;
++};
++
++/*
++ * return with iinfo is write-locked
++ * callers should call au_write_post() or iinfo_write_unlock() + fput() in the
++ * end
++ */
++static struct file *au_write_pre(struct file *file, int do_ready,
++				 struct au_write_pre *wpre)
++{
++	struct file *h_file;
++	struct dentry *dentry;
++	int err;
++	unsigned int lsc;
++	struct au_pin pin;
++
++	lsc = 0;
++	if (wpre)
++		lsc = wpre->lsc;
++	err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, lsc);
++	h_file = ERR_PTR(err);
++	if (unlikely(err))
++		goto out;
++
++	dentry = file->f_path.dentry;
++	if (do_ready) {
++		err = au_ready_to_write(file, -1, &pin);
++		if (unlikely(err)) {
++			h_file = ERR_PTR(err);
++			di_write_unlock(dentry);
++			goto out_fi;
++		}
++	}
++
++	di_downgrade_lock(dentry, /*flags*/0);
++	if (wpre)
++		wpre->btop = au_fbtop(file);
++	h_file = au_hf_top(file);
++	get_file(h_file);
++	if (wpre)
++		wpre->blks = file_inode(h_file)->i_blocks;
++	if (do_ready)
++		au_unpin(&pin);
++	di_read_unlock(dentry, /*flags*/0);
++
++out_fi:
++	fi_write_unlock(file);
++out:
++	return h_file;
++}
++
++static void au_write_post(struct inode *inode, struct file *h_file,
++			  struct au_write_pre *wpre, ssize_t written)
++{
++	struct inode *h_inode;
++
++	au_cpup_attr_timesizes(inode);
++	AuDebugOn(au_ibtop(inode) != wpre->btop);
++	h_inode = file_inode(h_file);
++	inode->i_mode = h_inode->i_mode;
++	ii_write_unlock(inode);
++	/* AuDbg("blks %llu, %llu\n", (u64)blks, (u64)h_inode->i_blocks); */
++	if (written > 0)
++		au_fhsm_wrote(inode->i_sb, wpre->btop,
++			      /*force*/h_inode->i_blocks > wpre->blks);
++	fput(h_file);
++}
++
++static ssize_t aufs_read(struct file *file, char __user *buf, size_t count,
++			 loff_t *ppos)
++{
++	ssize_t err;
++	struct inode *inode;
++	struct file *h_file;
++	struct super_block *sb;
++
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	/* filedata may be obsoleted by concurrent copyup, but no problem */
++	err = vfsub_read_u(h_file, buf, count, ppos);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++	au_read_post(inode, h_file);
++
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++/*
++ * todo: very ugly
++ * it locks both of i_mutex and si_rwsem for read in safe.
++ * if the plink maintenance mode continues forever (that is the problem),
++ * may loop forever.
++ */
++static void au_mtx_and_read_lock(struct inode *inode)
++{
++	int err;
++	struct super_block *sb = inode->i_sb;
++
++	while (1) {
++		inode_lock(inode);
++		err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++		if (!err)
++			break;
++		inode_unlock(inode);
++		si_read_lock(sb, AuLock_NOPLMW);
++		si_read_unlock(sb);
++	}
++}
++
++static ssize_t aufs_write(struct file *file, const char __user *ubuf,
++			  size_t count, loff_t *ppos)
++{
++	ssize_t err;
++	struct au_write_pre wpre;
++	struct inode *inode;
++	struct file *h_file;
++	char __user *buf = (char __user *)ubuf;
++
++	inode = file_inode(file);
++	au_mtx_and_read_lock(inode);
++
++	wpre.lsc = 0;
++	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = vfsub_write_u(h_file, buf, count, ppos);
++	au_write_post(inode, h_file, &wpre, err);
++
++out:
++	si_read_unlock(inode->i_sb);
++	inode_unlock(inode);
++	return err;
++}
++
++static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio,
++			  struct iov_iter *iov_iter)
++{
++	ssize_t err;
++	struct file *file;
++	ssize_t (*iter)(struct kiocb *, struct iov_iter *);
++
++	err = security_file_permission(h_file, rw);
++	if (unlikely(err))
++		goto out;
++
++	err = -ENOSYS;
++	iter = NULL;
++	if (rw == MAY_READ)
++		iter = h_file->f_op->read_iter;
++	else if (rw == MAY_WRITE)
++		iter = h_file->f_op->write_iter;
++
++	file = kio->ki_filp;
++	kio->ki_filp = h_file;
++	if (iter) {
++		lockdep_off();
++		err = iter(kio, iov_iter);
++		lockdep_on();
++	} else
++		/* currently there is no such fs */
++		WARN_ON_ONCE(1);
++	kio->ki_filp = file;
++
++out:
++	return err;
++}
++
++static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
++{
++	ssize_t err;
++	struct file *file, *h_file;
++	struct inode *inode;
++	struct super_block *sb;
++
++	file = kio->ki_filp;
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/1, /*lsc*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	if (au_test_loopback_kthread()) {
++		au_warn_loopback(h_file->f_path.dentry->d_sb);
++		if (file->f_mapping != h_file->f_mapping) {
++			file->f_mapping = h_file->f_mapping;
++			smp_mb(); /* unnecessary? */
++		}
++	}
++	fi_read_unlock(file);
++
++	err = au_do_iter(h_file, MAY_READ, kio, iov_iter);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++	au_read_post(inode, h_file);
++
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++static ssize_t aufs_write_iter(struct kiocb *kio, struct iov_iter *iov_iter)
++{
++	ssize_t err;
++	struct au_write_pre wpre;
++	struct inode *inode;
++	struct file *file, *h_file;
++
++	file = kio->ki_filp;
++	inode = file_inode(file);
++	au_mtx_and_read_lock(inode);
++
++	wpre.lsc = 0;
++	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = au_do_iter(h_file, MAY_WRITE, kio, iov_iter);
++	au_write_post(inode, h_file, &wpre, err);
++
++out:
++	si_read_unlock(inode->i_sb);
++	inode_unlock(inode);
++	return err;
++}
++
++static ssize_t aufs_splice_read(struct file *file, loff_t *ppos,
++				struct pipe_inode_info *pipe, size_t len,
++				unsigned int flags)
++{
++	ssize_t err;
++	struct file *h_file;
++	struct inode *inode;
++	struct super_block *sb;
++
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = vfsub_splice_to(h_file, ppos, pipe, len, flags);
++	/* todo: necessary? */
++	/* file->f_ra = h_file->f_ra; */
++	au_read_post(inode, h_file);
++
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++static ssize_t
++aufs_splice_write(struct pipe_inode_info *pipe, struct file *file, loff_t *ppos,
++		  size_t len, unsigned int flags)
++{
++	ssize_t err;
++	struct au_write_pre wpre;
++	struct inode *inode;
++	struct file *h_file;
++
++	inode = file_inode(file);
++	au_mtx_and_read_lock(inode);
++
++	wpre.lsc = 0;
++	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = vfsub_splice_from(pipe, h_file, ppos, len, flags);
++	au_write_post(inode, h_file, &wpre, err);
++
++out:
++	si_read_unlock(inode->i_sb);
++	inode_unlock(inode);
++	return err;
++}
++
++static long aufs_fallocate(struct file *file, int mode, loff_t offset,
++			   loff_t len)
++{
++	long err;
++	struct au_write_pre wpre;
++	struct inode *inode;
++	struct file *h_file;
++
++	inode = file_inode(file);
++	au_mtx_and_read_lock(inode);
++
++	wpre.lsc = 0;
++	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	lockdep_off();
++	err = vfs_fallocate(h_file, mode, offset, len);
++	lockdep_on();
++	au_write_post(inode, h_file, &wpre, /*written*/1);
++
++out:
++	si_read_unlock(inode->i_sb);
++	inode_unlock(inode);
++	return err;
++}
++
++static ssize_t aufs_copy_file_range(struct file *src, loff_t src_pos,
++				    struct file *dst, loff_t dst_pos,
++				    size_t len, unsigned int flags)
++{
++	ssize_t err;
++	struct au_write_pre wpre;
++	enum { SRC, DST };
++	struct {
++		struct inode *inode;
++		struct file *h_file;
++		struct super_block *h_sb;
++	} a[2];
++#define a_src	a[SRC]
++#define a_dst	a[DST]
++
++	err = -EINVAL;
++	a_src.inode = file_inode(src);
++	if (unlikely(!S_ISREG(a_src.inode->i_mode)))
++		goto out;
++	a_dst.inode = file_inode(dst);
++	if (unlikely(!S_ISREG(a_dst.inode->i_mode)))
++		goto out;
++
++	au_mtx_and_read_lock(a_dst.inode);
++	/*
++	 * in order to match the order in di_write_lock2_{child,parent}(),
++	 * use f_path.dentry for this comparison.
++	 */
++	if (src->f_path.dentry < dst->f_path.dentry) {
++		a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_1);
++		err = PTR_ERR(a_src.h_file);
++		if (IS_ERR(a_src.h_file))
++			goto out_si;
++
++		wpre.lsc = AuLsc_FI_2;
++		a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
++		err = PTR_ERR(a_dst.h_file);
++		if (IS_ERR(a_dst.h_file)) {
++			au_read_post(a_src.inode, a_src.h_file);
++			goto out_si;
++		}
++	} else {
++		wpre.lsc = AuLsc_FI_1;
++		a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
++		err = PTR_ERR(a_dst.h_file);
++		if (IS_ERR(a_dst.h_file))
++			goto out_si;
++
++		a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_2);
++		err = PTR_ERR(a_src.h_file);
++		if (IS_ERR(a_src.h_file)) {
++			au_write_post(a_dst.inode, a_dst.h_file, &wpre,
++				      /*written*/0);
++			goto out_si;
++		}
++	}
++
++	err = -EXDEV;
++	a_src.h_sb = file_inode(a_src.h_file)->i_sb;
++	a_dst.h_sb = file_inode(a_dst.h_file)->i_sb;
++	if (unlikely(a_src.h_sb != a_dst.h_sb)) {
++		AuDbgFile(src);
++		AuDbgFile(dst);
++		goto out_file;
++	}
++
++	err = vfsub_copy_file_range(a_src.h_file, src_pos, a_dst.h_file,
++				    dst_pos, len, flags);
++
++out_file:
++	au_write_post(a_dst.inode, a_dst.h_file, &wpre, err);
++	fi_read_unlock(src);
++	au_read_post(a_src.inode, a_src.h_file);
++out_si:
++	si_read_unlock(a_dst.inode->i_sb);
++	inode_unlock(a_dst.inode);
++out:
++	return err;
++#undef a_src
++#undef a_dst
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * The locking order around current->mmap_sem.
++ * - in most and regular cases
++ *   file I/O syscall -- aufs_read() or something
++ *	-- si_rwsem for read -- mmap_sem
++ *	(Note that [fdi]i_rwsem are released before mmap_sem).
++ * - in mmap case
++ *   mmap(2) -- mmap_sem -- aufs_mmap() -- si_rwsem for read -- [fdi]i_rwsem
++ * This AB-BA order is definitely bad, but is not a problem since "si_rwsem for
++ * read" allows multiple processes to acquire it and [fdi]i_rwsem are not held
++ * in file I/O. Aufs needs to stop lockdep in aufs_mmap() though.
++ * It means that when aufs acquires si_rwsem for write, the process should never
++ * acquire mmap_sem.
++ *
++ * Actually aufs_iterate() holds [fdi]i_rwsem before mmap_sem, but this is not a
++ * problem either since any directory is not able to be mmap-ed.
++ * The similar scenario is applied to aufs_readlink() too.
++ */
++
++#if 0 /* stop calling security_file_mmap() */
++/* cf. linux/include/linux/mman.h: calc_vm_prot_bits() */
++#define AuConv_VM_PROT(f, b)	_calc_vm_trans(f, VM_##b, PROT_##b)
++
++static unsigned long au_arch_prot_conv(unsigned long flags)
++{
++	/* currently ppc64 only */
++#ifdef CONFIG_PPC64
++	/* cf. linux/arch/powerpc/include/asm/mman.h */
++	AuDebugOn(arch_calc_vm_prot_bits(-1) != VM_SAO);
++	return AuConv_VM_PROT(flags, SAO);
++#else
++	AuDebugOn(arch_calc_vm_prot_bits(-1));
++	return 0;
++#endif
++}
++
++static unsigned long au_prot_conv(unsigned long flags)
++{
++	return AuConv_VM_PROT(flags, READ)
++		| AuConv_VM_PROT(flags, WRITE)
++		| AuConv_VM_PROT(flags, EXEC)
++		| au_arch_prot_conv(flags);
++}
++
++/* cf. linux/include/linux/mman.h: calc_vm_flag_bits() */
++#define AuConv_VM_MAP(f, b)	_calc_vm_trans(f, VM_##b, MAP_##b)
++
++static unsigned long au_flag_conv(unsigned long flags)
++{
++	return AuConv_VM_MAP(flags, GROWSDOWN)
++		| AuConv_VM_MAP(flags, DENYWRITE)
++		| AuConv_VM_MAP(flags, LOCKED);
++}
++#endif
++
++static int aufs_mmap(struct file *file, struct vm_area_struct *vma)
++{
++	int err;
++	const unsigned char wlock
++		= (file->f_mode & FMODE_WRITE) && (vma->vm_flags & VM_SHARED);
++	struct super_block *sb;
++	struct file *h_file;
++	struct inode *inode;
++
++	AuDbgVmRegion(file, vma);
++
++	inode = file_inode(file);
++	sb = inode->i_sb;
++	lockdep_off();
++	si_read_lock(sb, AuLock_NOPLMW);
++
++	h_file = au_write_pre(file, wlock, /*wpre*/NULL);
++	lockdep_on();
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	err = 0;
++	au_set_mmapped(file);
++	au_vm_file_reset(vma, h_file);
++	/*
++	 * we cannot call security_mmap_file() here since it may acquire
++	 * mmap_sem or i_mutex.
++	 *
++	 * err = security_mmap_file(h_file, au_prot_conv(vma->vm_flags),
++	 *			 au_flag_conv(vma->vm_flags));
++	 */
++	if (!err)
++		err = call_mmap(h_file, vma);
++	if (!err) {
++		au_vm_prfile_set(vma, file);
++		fsstack_copy_attr_atime(inode, file_inode(h_file));
++		goto out_fput; /* success */
++	}
++	au_unset_mmapped(file);
++	au_vm_file_reset(vma, file);
++
++out_fput:
++	lockdep_off();
++	ii_write_unlock(inode);
++	lockdep_on();
++	fput(h_file);
++out:
++	lockdep_off();
++	si_read_unlock(sb);
++	lockdep_on();
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int aufs_fsync_nondir(struct file *file, loff_t start, loff_t end,
++			     int datasync)
++{
++	int err;
++	struct au_write_pre wpre;
++	struct inode *inode;
++	struct file *h_file;
++
++	err = 0; /* -EBADF; */ /* posix? */
++	if (unlikely(!(file->f_mode & FMODE_WRITE)))
++		goto out;
++
++	inode = file_inode(file);
++	au_mtx_and_read_lock(inode);
++
++	wpre.lsc = 0;
++	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out_unlock;
++
++	err = vfsub_fsync(h_file, &h_file->f_path, datasync);
++	au_write_post(inode, h_file, &wpre, /*written*/0);
++
++out_unlock:
++	si_read_unlock(inode->i_sb);
++	inode_unlock(inode);
++out:
++	return err;
++}
++
++static int aufs_fasync(int fd, struct file *file, int flag)
++{
++	int err;
++	struct file *h_file;
++	struct super_block *sb;
++
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	if (h_file->f_op->fasync)
++		err = h_file->f_op->fasync(fd, h_file, flag);
++	fput(h_file); /* instead of au_read_post() */
++
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++static int aufs_setfl(struct file *file, unsigned long arg)
++{
++	int err;
++	struct file *h_file;
++	struct super_block *sb;
++
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out;
++
++	/* stop calling h_file->fasync */
++	arg |= vfsub_file_flags(file) & FASYNC;
++	err = setfl(/*unused fd*/-1, h_file, arg);
++	fput(h_file); /* instead of au_read_post() */
++
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* no one supports this operation, currently */
++#if 0
++static ssize_t aufs_sendpage(struct file *file, struct page *page, int offset,
++			     size_t len, loff_t *pos, int more)
++{
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++const struct file_operations aufs_file_fop = {
++	.owner		= THIS_MODULE,
++
++	.llseek		= default_llseek,
++
++	.read		= aufs_read,
++	.write		= aufs_write,
++	.read_iter	= aufs_read_iter,
++	.write_iter	= aufs_write_iter,
++
++#ifdef CONFIG_AUFS_POLL
++	.poll		= aufs_poll,
++#endif
++	.unlocked_ioctl	= aufs_ioctl_nondir,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl	= aufs_compat_ioctl_nondir,
++#endif
++	.mmap		= aufs_mmap,
++	.open		= aufs_open_nondir,
++	.flush		= aufs_flush_nondir,
++	.release	= aufs_release_nondir,
++	.fsync		= aufs_fsync_nondir,
++	.fasync		= aufs_fasync,
++	/* .sendpage	= aufs_sendpage, */
++	.setfl		= aufs_setfl,
++	.splice_write	= aufs_splice_write,
++	.splice_read	= aufs_splice_read,
++#if 0
++	.aio_splice_write = aufs_aio_splice_write,
++	.aio_splice_read  = aufs_aio_splice_read,
++#endif
++	.fallocate	= aufs_fallocate,
++	.copy_file_range = aufs_copy_file_range
++};
+diff -Nurp linux-5.4/fs/aufs/fstype.h linux-5.4-aufs/fs/aufs/fstype.h
+--- linux-5.4/fs/aufs/fstype.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/fstype.h	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,388 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * judging filesystem type
++ */
++
++#ifndef __AUFS_FSTYPE_H__
++#define __AUFS_FSTYPE_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fs.h>
++#include <linux/magic.h>
++#include <linux/nfs_fs.h>
++#include <linux/romfs_fs.h>
++
++static inline int au_test_aufs(struct super_block *sb)
++{
++	return sb->s_magic == AUFS_SUPER_MAGIC;
++}
++
++static inline const char *au_sbtype(struct super_block *sb)
++{
++	return sb->s_type->name;
++}
++
++static inline int au_test_iso9660(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_ISO9660_FS)
++	return sb->s_magic == ISOFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_romfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_ROMFS_FS)
++	return sb->s_magic == ROMFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_cramfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_CRAMFS)
++	return sb->s_magic == CRAMFS_MAGIC;
++#endif
++	return 0;
++}
++
++static inline int au_test_nfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_NFS_FS)
++	return sb->s_magic == NFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_fuse(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_FUSE_FS)
++	return sb->s_magic == FUSE_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_xfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_XFS_FS)
++	return sb->s_magic == XFS_SB_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_tmpfs(struct super_block *sb __maybe_unused)
++{
++#ifdef CONFIG_TMPFS
++	return sb->s_magic == TMPFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_ECRYPT_FS)
++	return !strcmp(au_sbtype(sb), "ecryptfs");
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_ramfs(struct super_block *sb)
++{
++	return sb->s_magic == RAMFS_MAGIC;
++}
++
++static inline int au_test_ubifs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_UBIFS_FS)
++	return sb->s_magic == UBIFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_procfs(struct super_block *sb __maybe_unused)
++{
++#ifdef CONFIG_PROC_FS
++	return sb->s_magic == PROC_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_sysfs(struct super_block *sb __maybe_unused)
++{
++#ifdef CONFIG_SYSFS
++	return sb->s_magic == SYSFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_configfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_CONFIGFS_FS)
++	return sb->s_magic == CONFIGFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_minix(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_MINIX_FS)
++	return sb->s_magic == MINIX3_SUPER_MAGIC
++		|| sb->s_magic == MINIX2_SUPER_MAGIC
++		|| sb->s_magic == MINIX2_SUPER_MAGIC2
++		|| sb->s_magic == MINIX_SUPER_MAGIC
++		|| sb->s_magic == MINIX_SUPER_MAGIC2;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_fat(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_FAT_FS)
++	return sb->s_magic == MSDOS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_msdos(struct super_block *sb)
++{
++	return au_test_fat(sb);
++}
++
++static inline int au_test_vfat(struct super_block *sb)
++{
++	return au_test_fat(sb);
++}
++
++static inline int au_test_securityfs(struct super_block *sb __maybe_unused)
++{
++#ifdef CONFIG_SECURITYFS
++	return sb->s_magic == SECURITYFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_squashfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_SQUASHFS)
++	return sb->s_magic == SQUASHFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_btrfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_BTRFS_FS)
++	return sb->s_magic == BTRFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_xenfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_XENFS)
++	return sb->s_magic == XENFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_debugfs(struct super_block *sb __maybe_unused)
++{
++#ifdef CONFIG_DEBUG_FS
++	return sb->s_magic == DEBUGFS_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_nilfs(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_NILFS)
++	return sb->s_magic == NILFS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++static inline int au_test_hfsplus(struct super_block *sb __maybe_unused)
++{
++#if IS_ENABLED(CONFIG_HFSPLUS_FS)
++	return sb->s_magic == HFSPLUS_SUPER_MAGIC;
++#else
++	return 0;
++#endif
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * they can't be an aufs branch.
++ */
++static inline int au_test_fs_unsuppoted(struct super_block *sb)
++{
++	return
++#ifndef CONFIG_AUFS_BR_RAMFS
++		au_test_ramfs(sb) ||
++#endif
++		au_test_procfs(sb)
++		|| au_test_sysfs(sb)
++		|| au_test_configfs(sb)
++		|| au_test_debugfs(sb)
++		|| au_test_securityfs(sb)
++		|| au_test_xenfs(sb)
++		|| au_test_ecryptfs(sb)
++		/* || !strcmp(au_sbtype(sb), "unionfs") */
++		|| au_test_aufs(sb); /* will be supported in next version */
++}
++
++static inline int au_test_fs_remote(struct super_block *sb)
++{
++	return !au_test_tmpfs(sb)
++#ifdef CONFIG_AUFS_BR_RAMFS
++		&& !au_test_ramfs(sb)
++#endif
++		&& !(sb->s_type->fs_flags & FS_REQUIRES_DEV);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * Note: these functions (below) are created after reading ->getattr() in all
++ * filesystems under linux/fs. it means we have to do so in every update...
++ */
++
++/*
++ * some filesystems require getattr to refresh the inode attributes before
++ * referencing.
++ * in most cases, we can rely on the inode attribute in NFS (or every remote fs)
++ * and leave the work for d_revalidate()
++ */
++static inline int au_test_fs_refresh_iattr(struct super_block *sb)
++{
++	return au_test_nfs(sb)
++		|| au_test_fuse(sb)
++		/* || au_test_btrfs(sb) */	/* untested */
++		;
++}
++
++/*
++ * filesystems which don't maintain i_size or i_blocks.
++ */
++static inline int au_test_fs_bad_iattr_size(struct super_block *sb)
++{
++	return au_test_xfs(sb)
++		|| au_test_btrfs(sb)
++		|| au_test_ubifs(sb)
++		|| au_test_hfsplus(sb)	/* maintained, but incorrect */
++		/* || au_test_minix(sb) */	/* untested */
++		;
++}
++
++/*
++ * filesystems which don't store the correct value in some of their inode
++ * attributes.
++ */
++static inline int au_test_fs_bad_iattr(struct super_block *sb)
++{
++	return au_test_fs_bad_iattr_size(sb)
++		|| au_test_fat(sb)
++		|| au_test_msdos(sb)
++		|| au_test_vfat(sb);
++}
++
++/* they don't check i_nlink in link(2) */
++static inline int au_test_fs_no_limit_nlink(struct super_block *sb)
++{
++	return au_test_tmpfs(sb)
++#ifdef CONFIG_AUFS_BR_RAMFS
++		|| au_test_ramfs(sb)
++#endif
++		|| au_test_ubifs(sb)
++		|| au_test_hfsplus(sb);
++}
++
++/*
++ * filesystems which sets S_NOATIME and S_NOCMTIME.
++ */
++static inline int au_test_fs_notime(struct super_block *sb)
++{
++	return au_test_nfs(sb)
++		|| au_test_fuse(sb)
++		|| au_test_ubifs(sb)
++		;
++}
++
++/* temporary support for i#1 in cramfs */
++static inline int au_test_fs_unique_ino(struct inode *inode)
++{
++	if (au_test_cramfs(inode->i_sb))
++		return inode->i_ino != 1;
++	return 1;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * the filesystem where the xino files placed must support i/o after unlink and
++ * maintain i_size and i_blocks.
++ */
++static inline int au_test_fs_bad_xino(struct super_block *sb)
++{
++	return au_test_fs_remote(sb)
++		|| au_test_fs_bad_iattr_size(sb)
++		/* don't want unnecessary work for xino */
++		|| au_test_aufs(sb)
++		|| au_test_ecryptfs(sb)
++		|| au_test_nilfs(sb);
++}
++
++static inline int au_test_fs_trunc_xino(struct super_block *sb)
++{
++	return au_test_tmpfs(sb)
++		|| au_test_ramfs(sb);
++}
++
++/*
++ * test if the @sb is real-readonly.
++ */
++static inline int au_test_fs_rr(struct super_block *sb)
++{
++	return au_test_squashfs(sb)
++		|| au_test_iso9660(sb)
++		|| au_test_cramfs(sb)
++		|| au_test_romfs(sb);
++}
++
++/*
++ * test if the @inode is nfs with 'noacl' option
++ * NFS always sets SB_POSIXACL regardless its mount option 'noacl.'
++ */
++static inline int au_test_nfs_noacl(struct inode *inode)
++{
++	return au_test_nfs(inode->i_sb)
++		/* && IS_POSIXACL(inode) */
++		&& !nfs_server_capable(inode, NFS_CAP_ACLS);
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_FSTYPE_H__ */
+diff -Nurp linux-5.4/fs/aufs/hbl.h linux-5.4-aufs/fs/aufs/hbl.h
+--- linux-5.4/fs/aufs/hbl.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/hbl.h	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,52 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2017-2019 Junjiro R. Okajima
++ */
++
++/*
++ * helpers for hlist_bl.h
++ */
++
++#ifndef __AUFS_HBL_H__
++#define __AUFS_HBL_H__
++
++#ifdef __KERNEL__
++
++#include <linux/list_bl.h>
++
++static inline void au_hbl_add(struct hlist_bl_node *node,
++			      struct hlist_bl_head *hbl)
++{
++	hlist_bl_lock(hbl);
++	hlist_bl_add_head(node, hbl);
++	hlist_bl_unlock(hbl);
++}
++
++static inline void au_hbl_del(struct hlist_bl_node *node,
++			      struct hlist_bl_head *hbl)
++{
++	hlist_bl_lock(hbl);
++	hlist_bl_del(node);
++	hlist_bl_unlock(hbl);
++}
++
++#define au_hbl_for_each(pos, head)					\
++	for (pos = hlist_bl_first(head);				\
++	     pos;							\
++	     pos = pos->next)
++
++static inline unsigned long au_hbl_count(struct hlist_bl_head *hbl)
++{
++	unsigned long cnt;
++	struct hlist_bl_node *pos;
++
++	cnt = 0;
++	hlist_bl_lock(hbl);
++	au_hbl_for_each(pos, hbl)
++		cnt++;
++	hlist_bl_unlock(hbl);
++	return cnt;
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_HBL_H__ */
+diff -Nurp linux-5.4/fs/aufs/hfsnotify.c linux-5.4-aufs/fs/aufs/hfsnotify.c
+--- linux-5.4/fs/aufs/hfsnotify.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/hfsnotify.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,275 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * fsnotify for the lower directories
++ */
++
++#include "aufs.h"
++
++/* FS_IN_IGNORED is unnecessary */
++static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE
++				 | FS_CREATE | FS_EVENT_ON_CHILD);
++static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq);
++static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0);
++
++static void au_hfsn_free_mark(struct fsnotify_mark *mark)
++{
++	struct au_hnotify *hn = container_of(mark, struct au_hnotify,
++					     hn_mark);
++	/* AuDbg("here\n"); */
++	au_cache_free_hnotify(hn);
++	smp_mb__before_atomic(); /* for atomic64_dec */
++	if (atomic64_dec_and_test(&au_hfsn_ifree))
++		wake_up(&au_hfsn_wq);
++}
++
++static int au_hfsn_alloc(struct au_hinode *hinode)
++{
++	int err;
++	struct au_hnotify *hn;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct fsnotify_mark *mark;
++	aufs_bindex_t bindex;
++
++	hn = hinode->hi_notify;
++	sb = hn->hn_aufs_inode->i_sb;
++	bindex = au_br_index(sb, hinode->hi_id);
++	br = au_sbr(sb, bindex);
++	AuDebugOn(!br->br_hfsn);
++
++	mark = &hn->hn_mark;
++	fsnotify_init_mark(mark, br->br_hfsn->hfsn_group);
++	mark->mask = AuHfsnMask;
++	/*
++	 * by udba rename or rmdir, aufs assign a new inode to the known
++	 * h_inode, so specify 1 to allow dups.
++	 */
++	lockdep_off();
++	err = fsnotify_add_inode_mark(mark, hinode->hi_inode, /*allow_dups*/1);
++	lockdep_on();
++
++	return err;
++}
++
++static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn)
++{
++	struct fsnotify_mark *mark;
++	unsigned long long ull;
++	struct fsnotify_group *group;
++
++	ull = atomic64_inc_return(&au_hfsn_ifree);
++	BUG_ON(!ull);
++
++	mark = &hn->hn_mark;
++	spin_lock(&mark->lock);
++	group = mark->group;
++	fsnotify_get_group(group);
++	spin_unlock(&mark->lock);
++	lockdep_off();
++	fsnotify_destroy_mark(mark, group);
++	fsnotify_put_mark(mark);
++	fsnotify_put_group(group);
++	lockdep_on();
++
++	/* free hn by myself */
++	return 0;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void au_hfsn_ctl(struct au_hinode *hinode, int do_set)
++{
++	struct fsnotify_mark *mark;
++
++	mark = &hinode->hi_notify->hn_mark;
++	spin_lock(&mark->lock);
++	if (do_set) {
++		AuDebugOn(mark->mask & AuHfsnMask);
++		mark->mask |= AuHfsnMask;
++	} else {
++		AuDebugOn(!(mark->mask & AuHfsnMask));
++		mark->mask &= ~AuHfsnMask;
++	}
++	spin_unlock(&mark->lock);
++	/* fsnotify_recalc_inode_mask(hinode->hi_inode); */
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* #define AuDbgHnotify */
++#ifdef AuDbgHnotify
++static char *au_hfsn_name(u32 mask)
++{
++#ifdef CONFIG_AUFS_DEBUG
++#define test_ret(flag)				\
++	do {					\
++		if (mask & flag)		\
++			return #flag;		\
++	} while (0)
++	test_ret(FS_ACCESS);
++	test_ret(FS_MODIFY);
++	test_ret(FS_ATTRIB);
++	test_ret(FS_CLOSE_WRITE);
++	test_ret(FS_CLOSE_NOWRITE);
++	test_ret(FS_OPEN);
++	test_ret(FS_MOVED_FROM);
++	test_ret(FS_MOVED_TO);
++	test_ret(FS_CREATE);
++	test_ret(FS_DELETE);
++	test_ret(FS_DELETE_SELF);
++	test_ret(FS_MOVE_SELF);
++	test_ret(FS_UNMOUNT);
++	test_ret(FS_Q_OVERFLOW);
++	test_ret(FS_IN_IGNORED);
++	test_ret(FS_ISDIR);
++	test_ret(FS_IN_ONESHOT);
++	test_ret(FS_EVENT_ON_CHILD);
++	return "";
++#undef test_ret
++#else
++	return "??";
++#endif
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static void au_hfsn_free_group(struct fsnotify_group *group)
++{
++	struct au_br_hfsnotify *hfsn = group->private;
++
++	/* AuDbg("here\n"); */
++	au_kfree_try_rcu(hfsn);
++}
++
++static int au_hfsn_handle_event(struct fsnotify_group *group,
++				struct inode *inode,
++				u32 mask, const void *data, int data_type,
++				const struct qstr *file_name, u32 cookie,
++				struct fsnotify_iter_info *iter_info)
++{
++	int err;
++	struct au_hnotify *hnotify;
++	struct inode *h_dir, *h_inode;
++	struct fsnotify_mark *inode_mark;
++
++	AuDebugOn(data_type != FSNOTIFY_EVENT_INODE);
++
++	err = 0;
++	/* if FS_UNMOUNT happens, there must be another bug */
++	AuDebugOn(mask & FS_UNMOUNT);
++	if (mask & (FS_IN_IGNORED | FS_UNMOUNT))
++		goto out;
++
++	h_dir = inode;
++	h_inode = NULL;
++#ifdef AuDbgHnotify
++	au_debug_on();
++	if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1
++	    || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) {
++		AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n",
++		      h_dir->i_ino, mask, au_hfsn_name(mask),
++		      AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0);
++		/* WARN_ON(1); */
++	}
++	au_debug_off();
++#endif
++
++	inode_mark = fsnotify_iter_inode_mark(iter_info);
++	AuDebugOn(!inode_mark);
++	hnotify = container_of(inode_mark, struct au_hnotify, hn_mark);
++	err = au_hnotify(h_dir, hnotify, mask, file_name, h_inode);
++
++out:
++	return err;
++}
++
++static struct fsnotify_ops au_hfsn_ops = {
++	.handle_event		= au_hfsn_handle_event,
++	.free_group_priv	= au_hfsn_free_group,
++	.free_mark		= au_hfsn_free_mark
++};
++
++/* ---------------------------------------------------------------------- */
++
++static void au_hfsn_fin_br(struct au_branch *br)
++{
++	struct au_br_hfsnotify *hfsn;
++
++	hfsn = br->br_hfsn;
++	if (hfsn) {
++		lockdep_off();
++		fsnotify_put_group(hfsn->hfsn_group);
++		lockdep_on();
++	}
++}
++
++static int au_hfsn_init_br(struct au_branch *br, int perm)
++{
++	int err;
++	struct fsnotify_group *group;
++	struct au_br_hfsnotify *hfsn;
++
++	err = 0;
++	br->br_hfsn = NULL;
++	if (!au_br_hnotifyable(perm))
++		goto out;
++
++	err = -ENOMEM;
++	hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS);
++	if (unlikely(!hfsn))
++		goto out;
++
++	err = 0;
++	group = fsnotify_alloc_group(&au_hfsn_ops);
++	if (IS_ERR(group)) {
++		err = PTR_ERR(group);
++		pr_err("fsnotify_alloc_group() failed, %d\n", err);
++		goto out_hfsn;
++	}
++
++	group->private = hfsn;
++	hfsn->hfsn_group = group;
++	br->br_hfsn = hfsn;
++	goto out; /* success */
++
++out_hfsn:
++	au_kfree_try_rcu(hfsn);
++out:
++	return err;
++}
++
++static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm)
++{
++	int err;
++
++	err = 0;
++	if (!br->br_hfsn)
++		err = au_hfsn_init_br(br, perm);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void au_hfsn_fin(void)
++{
++	AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree));
++	wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree));
++}
++
++const struct au_hnotify_op au_hnotify_op = {
++	.ctl		= au_hfsn_ctl,
++	.alloc		= au_hfsn_alloc,
++	.free		= au_hfsn_free,
++
++	.fin		= au_hfsn_fin,
++
++	.reset_br	= au_hfsn_reset_br,
++	.fin_br		= au_hfsn_fin_br,
++	.init_br	= au_hfsn_init_br
++};
+diff -Nurp linux-5.4/fs/aufs/hfsplus.c linux-5.4-aufs/fs/aufs/hfsplus.c
+--- linux-5.4/fs/aufs/hfsplus.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/hfsplus.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,47 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2010-2019 Junjiro R. Okajima
++ */
++
++/*
++ * special support for filesystems which acquires an inode mutex
++ * at final closing a file, eg, hfsplus.
++ *
++ * This trick is very simple and stupid, just to open the file before really
++ * necessary open to tell hfsplus that this is not the final closing.
++ * The caller should call au_h_open_pre() after acquiring the inode mutex,
++ * and au_h_open_post() after releasing it.
++ */
++
++#include "aufs.h"
++
++struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
++			   int force_wr)
++{
++	struct file *h_file;
++	struct dentry *h_dentry;
++
++	h_dentry = au_h_dptr(dentry, bindex);
++	AuDebugOn(!h_dentry);
++	AuDebugOn(d_is_negative(h_dentry));
++
++	h_file = NULL;
++	if (au_test_hfsplus(h_dentry->d_sb)
++	    && d_is_reg(h_dentry))
++		h_file = au_h_open(dentry, bindex,
++				   O_RDONLY | O_NOATIME | O_LARGEFILE,
++				   /*file*/NULL, force_wr);
++	return h_file;
++}
++
++void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
++		    struct file *h_file)
++{
++	struct au_branch *br;
++
++	if (h_file) {
++		fput(h_file);
++		br = au_sbr(dentry->d_sb, bindex);
++		au_lcnt_dec(&br->br_nfiles);
++	}
++}
+diff -Nurp linux-5.4/fs/aufs/hnotify.c linux-5.4-aufs/fs/aufs/hnotify.c
+--- linux-5.4/fs/aufs/hnotify.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/hnotify.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,708 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * abstraction to notify the direct changes on lower directories
++ */
++
++/* #include <linux/iversion.h> */
++#include "aufs.h"
++
++int au_hn_alloc(struct au_hinode *hinode, struct inode *inode)
++{
++	int err;
++	struct au_hnotify *hn;
++
++	err = -ENOMEM;
++	hn = au_cache_alloc_hnotify();
++	if (hn) {
++		hn->hn_aufs_inode = inode;
++		hinode->hi_notify = hn;
++		err = au_hnotify_op.alloc(hinode);
++		AuTraceErr(err);
++		if (unlikely(err)) {
++			hinode->hi_notify = NULL;
++			au_cache_free_hnotify(hn);
++			/*
++			 * The upper dir was removed by udba, but the same named
++			 * dir left. In this case, aufs assigns a new inode
++			 * number and set the monitor again.
++			 * For the lower dir, the old monitor is still left.
++			 */
++			if (err == -EEXIST)
++				err = 0;
++		}
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++void au_hn_free(struct au_hinode *hinode)
++{
++	struct au_hnotify *hn;
++
++	hn = hinode->hi_notify;
++	if (hn) {
++		hinode->hi_notify = NULL;
++		if (au_hnotify_op.free(hinode, hn))
++			au_cache_free_hnotify(hn);
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_hn_ctl(struct au_hinode *hinode, int do_set)
++{
++	if (hinode->hi_notify)
++		au_hnotify_op.ctl(hinode, do_set);
++}
++
++void au_hn_reset(struct inode *inode, unsigned int flags)
++{
++	aufs_bindex_t bindex, bbot;
++	struct inode *hi;
++	struct dentry *iwhdentry;
++
++	bbot = au_ibbot(inode);
++	for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
++		hi = au_h_iptr(inode, bindex);
++		if (!hi)
++			continue;
++
++		/* inode_lock_nested(hi, AuLsc_I_CHILD); */
++		iwhdentry = au_hi_wh(inode, bindex);
++		if (iwhdentry)
++			dget(iwhdentry);
++		au_igrab(hi);
++		au_set_h_iptr(inode, bindex, NULL, 0);
++		au_set_h_iptr(inode, bindex, au_igrab(hi),
++			      flags & ~AuHi_XINO);
++		iput(hi);
++		dput(iwhdentry);
++		/* inode_unlock(hi); */
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int hn_xino(struct inode *inode, struct inode *h_inode)
++{
++	int err;
++	aufs_bindex_t bindex, bbot, bfound, btop;
++	struct inode *h_i;
++
++	err = 0;
++	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
++		pr_warn("branch root dir was changed\n");
++		goto out;
++	}
++
++	bfound = -1;
++	bbot = au_ibbot(inode);
++	btop = au_ibtop(inode);
++#if 0 /* reserved for future use */
++	if (bindex == bbot) {
++		/* keep this ino in rename case */
++		goto out;
++	}
++#endif
++	for (bindex = btop; bindex <= bbot; bindex++)
++		if (au_h_iptr(inode, bindex) == h_inode) {
++			bfound = bindex;
++			break;
++		}
++	if (bfound < 0)
++		goto out;
++
++	for (bindex = btop; bindex <= bbot; bindex++) {
++		h_i = au_h_iptr(inode, bindex);
++		if (!h_i)
++			continue;
++
++		err = au_xino_write(inode->i_sb, bindex, h_i->i_ino, /*ino*/0);
++		/* ignore this error */
++		/* bad action? */
++	}
++
++	/* children inode number will be broken */
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int hn_gen_tree(struct dentry *dentry)
++{
++	int err, i, j, ndentry;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry **dentries;
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	err = au_dcsub_pages(&dpages, dentry, NULL, NULL);
++	if (unlikely(err))
++		goto out_dpages;
++
++	for (i = 0; i < dpages.ndpage; i++) {
++		dpage = dpages.dpages + i;
++		dentries = dpage->dentries;
++		ndentry = dpage->ndentry;
++		for (j = 0; j < ndentry; j++) {
++			struct dentry *d;
++
++			d = dentries[j];
++			if (IS_ROOT(d))
++				continue;
++
++			au_digen_dec(d);
++			if (d_really_is_positive(d))
++				/* todo: reset children xino?
++				   cached children only? */
++				au_iigen_dec(d_inode(d));
++		}
++	}
++
++out_dpages:
++	au_dpages_free(&dpages);
++
++#if 0
++	/* discard children */
++	dentry_unhash(dentry);
++	dput(dentry);
++#endif
++out:
++	return err;
++}
++
++/*
++ * return 0 if processed.
++ */
++static int hn_gen_by_inode(char *name, unsigned int nlen, struct inode *inode,
++			   const unsigned int isdir)
++{
++	int err;
++	struct dentry *d;
++	struct qstr *dname;
++
++	err = 1;
++	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
++		pr_warn("branch root dir was changed\n");
++		err = 0;
++		goto out;
++	}
++
++	if (!isdir) {
++		AuDebugOn(!name);
++		au_iigen_dec(inode);
++		spin_lock(&inode->i_lock);
++		hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
++			spin_lock(&d->d_lock);
++			dname = &d->d_name;
++			if (dname->len != nlen
++			    && memcmp(dname->name, name, nlen)) {
++				spin_unlock(&d->d_lock);
++				continue;
++			}
++			err = 0;
++			au_digen_dec(d);
++			spin_unlock(&d->d_lock);
++			break;
++		}
++		spin_unlock(&inode->i_lock);
++	} else {
++		au_fset_si(au_sbi(inode->i_sb), FAILED_REFRESH_DIR);
++		d = d_find_any_alias(inode);
++		if (!d) {
++			au_iigen_dec(inode);
++			goto out;
++		}
++
++		spin_lock(&d->d_lock);
++		dname = &d->d_name;
++		if (dname->len == nlen && !memcmp(dname->name, name, nlen)) {
++			spin_unlock(&d->d_lock);
++			err = hn_gen_tree(d);
++			spin_lock(&d->d_lock);
++		}
++		spin_unlock(&d->d_lock);
++		dput(d);
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int hn_gen_by_name(struct dentry *dentry, const unsigned int isdir)
++{
++	int err;
++
++	if (IS_ROOT(dentry)) {
++		pr_warn("branch root dir was changed\n");
++		return 0;
++	}
++
++	err = 0;
++	if (!isdir) {
++		au_digen_dec(dentry);
++		if (d_really_is_positive(dentry))
++			au_iigen_dec(d_inode(dentry));
++	} else {
++		au_fset_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR);
++		if (d_really_is_positive(dentry))
++			err = hn_gen_tree(dentry);
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* hnotify job flags */
++#define AuHnJob_XINO0		1
++#define AuHnJob_GEN		(1 << 1)
++#define AuHnJob_DIRENT		(1 << 2)
++#define AuHnJob_ISDIR		(1 << 3)
++#define AuHnJob_TRYXINO0	(1 << 4)
++#define AuHnJob_MNTPNT		(1 << 5)
++#define au_ftest_hnjob(flags, name)	((flags) & AuHnJob_##name)
++#define au_fset_hnjob(flags, name) \
++	do { (flags) |= AuHnJob_##name; } while (0)
++#define au_fclr_hnjob(flags, name) \
++	do { (flags) &= ~AuHnJob_##name; } while (0)
++
++enum {
++	AuHn_CHILD,
++	AuHn_PARENT,
++	AuHnLast
++};
++
++struct au_hnotify_args {
++	struct inode *h_dir, *dir, *h_child_inode;
++	u32 mask;
++	unsigned int flags[AuHnLast];
++	unsigned int h_child_nlen;
++	char h_child_name[];
++};
++
++struct hn_job_args {
++	unsigned int flags;
++	struct inode *inode, *h_inode, *dir, *h_dir;
++	struct dentry *dentry;
++	char *h_name;
++	int h_nlen;
++};
++
++static int hn_job(struct hn_job_args *a)
++{
++	const unsigned int isdir = au_ftest_hnjob(a->flags, ISDIR);
++	int e;
++
++	/* reset xino */
++	if (au_ftest_hnjob(a->flags, XINO0) && a->inode)
++		hn_xino(a->inode, a->h_inode); /* ignore this error */
++
++	if (au_ftest_hnjob(a->flags, TRYXINO0)
++	    && a->inode
++	    && a->h_inode) {
++		inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
++		if (!a->h_inode->i_nlink
++		    && !(a->h_inode->i_state & I_LINKABLE))
++			hn_xino(a->inode, a->h_inode); /* ignore this error */
++		inode_unlock_shared(a->h_inode);
++	}
++
++	/* make the generation obsolete */
++	if (au_ftest_hnjob(a->flags, GEN)) {
++		e = -1;
++		if (a->inode)
++			e = hn_gen_by_inode(a->h_name, a->h_nlen, a->inode,
++					      isdir);
++		if (e && a->dentry)
++			hn_gen_by_name(a->dentry, isdir);
++		/* ignore this error */
++	}
++
++	/* make dir entries obsolete */
++	if (au_ftest_hnjob(a->flags, DIRENT) && a->inode) {
++		struct au_vdir *vdir;
++
++		vdir = au_ivdir(a->inode);
++		if (vdir)
++			vdir->vd_jiffy = 0;
++		/* IMustLock(a->inode); */
++		/* inode_inc_iversion(a->inode); */
++	}
++
++	/* can do nothing but warn */
++	if (au_ftest_hnjob(a->flags, MNTPNT)
++	    && a->dentry
++	    && d_mountpoint(a->dentry))
++		pr_warn("mount-point %pd is removed or renamed\n", a->dentry);
++
++	return 0;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct dentry *lookup_wlock_by_name(char *name, unsigned int nlen,
++					   struct inode *dir)
++{
++	struct dentry *dentry, *d, *parent;
++	struct qstr *dname;
++
++	parent = d_find_any_alias(dir);
++	if (!parent)
++		return NULL;
++
++	dentry = NULL;
++	spin_lock(&parent->d_lock);
++	list_for_each_entry(d, &parent->d_subdirs, d_child) {
++		/* AuDbg("%pd\n", d); */
++		spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
++		dname = &d->d_name;
++		if (dname->len != nlen || memcmp(dname->name, name, nlen))
++			goto cont_unlock;
++		if (au_di(d))
++			au_digen_dec(d);
++		else
++			goto cont_unlock;
++		if (au_dcount(d) > 0) {
++			dentry = dget_dlock(d);
++			spin_unlock(&d->d_lock);
++			break;
++		}
++
++cont_unlock:
++		spin_unlock(&d->d_lock);
++	}
++	spin_unlock(&parent->d_lock);
++	dput(parent);
++
++	if (dentry)
++		di_write_lock_child(dentry);
++
++	return dentry;
++}
++
++static struct inode *lookup_wlock_by_ino(struct super_block *sb,
++					 aufs_bindex_t bindex, ino_t h_ino)
++{
++	struct inode *inode;
++	ino_t ino;
++	int err;
++
++	inode = NULL;
++	err = au_xino_read(sb, bindex, h_ino, &ino);
++	if (!err && ino)
++		inode = ilookup(sb, ino);
++	if (!inode)
++		goto out;
++
++	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
++		pr_warn("wrong root branch\n");
++		iput(inode);
++		inode = NULL;
++		goto out;
++	}
++
++	ii_write_lock_child(inode);
++
++out:
++	return inode;
++}
++
++static void au_hn_bh(void *_args)
++{
++	struct au_hnotify_args *a = _args;
++	struct super_block *sb;
++	aufs_bindex_t bindex, bbot, bfound;
++	unsigned char xino, try_iput;
++	int err;
++	struct inode *inode;
++	ino_t h_ino;
++	struct hn_job_args args;
++	struct dentry *dentry;
++	struct au_sbinfo *sbinfo;
++
++	AuDebugOn(!_args);
++	AuDebugOn(!a->h_dir);
++	AuDebugOn(!a->dir);
++	AuDebugOn(!a->mask);
++	AuDbg("mask 0x%x, i%lu, hi%lu, hci%lu\n",
++	      a->mask, a->dir->i_ino, a->h_dir->i_ino,
++	      a->h_child_inode ? a->h_child_inode->i_ino : 0);
++
++	inode = NULL;
++	dentry = NULL;
++	/*
++	 * do not lock a->dir->i_mutex here
++	 * because of d_revalidate() may cause a deadlock.
++	 */
++	sb = a->dir->i_sb;
++	AuDebugOn(!sb);
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!sbinfo);
++	si_write_lock(sb, AuLock_NOPLMW);
++
++	if (au_opt_test(sbinfo->si_mntflags, DIRREN))
++		switch (a->mask & FS_EVENTS_POSS_ON_CHILD) {
++		case FS_MOVED_FROM:
++		case FS_MOVED_TO:
++			AuWarn1("DIRREN with UDBA may not work correctly "
++				"for the direct rename(2)\n");
++		}
++
++	ii_read_lock_parent(a->dir);
++	bfound = -1;
++	bbot = au_ibbot(a->dir);
++	for (bindex = au_ibtop(a->dir); bindex <= bbot; bindex++)
++		if (au_h_iptr(a->dir, bindex) == a->h_dir) {
++			bfound = bindex;
++			break;
++		}
++	ii_read_unlock(a->dir);
++	if (unlikely(bfound < 0))
++		goto out;
++
++	xino = !!au_opt_test(au_mntflags(sb), XINO);
++	h_ino = 0;
++	if (a->h_child_inode)
++		h_ino = a->h_child_inode->i_ino;
++
++	if (a->h_child_nlen
++	    && (au_ftest_hnjob(a->flags[AuHn_CHILD], GEN)
++		|| au_ftest_hnjob(a->flags[AuHn_CHILD], MNTPNT)))
++		dentry = lookup_wlock_by_name(a->h_child_name, a->h_child_nlen,
++					      a->dir);
++	try_iput = 0;
++	if (dentry && d_really_is_positive(dentry))
++		inode = d_inode(dentry);
++	if (xino && !inode && h_ino
++	    && (au_ftest_hnjob(a->flags[AuHn_CHILD], XINO0)
++		|| au_ftest_hnjob(a->flags[AuHn_CHILD], TRYXINO0)
++		|| au_ftest_hnjob(a->flags[AuHn_CHILD], GEN))) {
++		inode = lookup_wlock_by_ino(sb, bfound, h_ino);
++		try_iput = 1;
++	}
++
++	args.flags = a->flags[AuHn_CHILD];
++	args.dentry = dentry;
++	args.inode = inode;
++	args.h_inode = a->h_child_inode;
++	args.dir = a->dir;
++	args.h_dir = a->h_dir;
++	args.h_name = a->h_child_name;
++	args.h_nlen = a->h_child_nlen;
++	err = hn_job(&args);
++	if (dentry) {
++		if (au_di(dentry))
++			di_write_unlock(dentry);
++		dput(dentry);
++	}
++	if (inode && try_iput) {
++		ii_write_unlock(inode);
++		iput(inode);
++	}
++
++	ii_write_lock_parent(a->dir);
++	args.flags = a->flags[AuHn_PARENT];
++	args.dentry = NULL;
++	args.inode = a->dir;
++	args.h_inode = a->h_dir;
++	args.dir = NULL;
++	args.h_dir = NULL;
++	args.h_name = NULL;
++	args.h_nlen = 0;
++	err = hn_job(&args);
++	ii_write_unlock(a->dir);
++
++out:
++	iput(a->h_child_inode);
++	iput(a->h_dir);
++	iput(a->dir);
++	si_write_unlock(sb);
++	au_nwt_done(&sbinfo->si_nowait);
++	au_kfree_rcu(a);
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
++	       const struct qstr *h_child_qstr, struct inode *h_child_inode)
++{
++	int err, len;
++	unsigned int flags[AuHnLast], f;
++	unsigned char isdir, isroot, wh;
++	struct inode *dir;
++	struct au_hnotify_args *args;
++	char *p, *h_child_name;
++
++	err = 0;
++	AuDebugOn(!hnotify || !hnotify->hn_aufs_inode);
++	dir = igrab(hnotify->hn_aufs_inode);
++	if (!dir)
++		goto out;
++
++	isroot = (dir->i_ino == AUFS_ROOT_INO);
++	wh = 0;
++	h_child_name = (void *)h_child_qstr->name;
++	len = h_child_qstr->len;
++	if (h_child_name) {
++		if (len > AUFS_WH_PFX_LEN
++		    && !memcmp(h_child_name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
++			h_child_name += AUFS_WH_PFX_LEN;
++			len -= AUFS_WH_PFX_LEN;
++			wh = 1;
++		}
++	}
++
++	isdir = 0;
++	if (h_child_inode)
++		isdir = !!S_ISDIR(h_child_inode->i_mode);
++	flags[AuHn_PARENT] = AuHnJob_ISDIR;
++	flags[AuHn_CHILD] = 0;
++	if (isdir)
++		flags[AuHn_CHILD] = AuHnJob_ISDIR;
++	au_fset_hnjob(flags[AuHn_PARENT], DIRENT);
++	au_fset_hnjob(flags[AuHn_CHILD], GEN);
++	switch (mask & ALL_FSNOTIFY_DIRENT_EVENTS) {
++	case FS_MOVED_FROM:
++	case FS_MOVED_TO:
++		au_fset_hnjob(flags[AuHn_CHILD], XINO0);
++		au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
++		/*FALLTHROUGH*/
++	case FS_CREATE:
++		AuDebugOn(!h_child_name);
++		break;
++
++	case FS_DELETE:
++		/*
++		 * aufs never be able to get this child inode.
++		 * revalidation should be in d_revalidate()
++		 * by checking i_nlink, i_generation or d_unhashed().
++		 */
++		AuDebugOn(!h_child_name);
++		au_fset_hnjob(flags[AuHn_CHILD], TRYXINO0);
++		au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
++		break;
++
++	default:
++		AuDebugOn(1);
++	}
++
++	if (wh)
++		h_child_inode = NULL;
++
++	err = -ENOMEM;
++	/* iput() and kfree() will be called in au_hnotify() */
++	args = kmalloc(sizeof(*args) + len + 1, GFP_NOFS);
++	if (unlikely(!args)) {
++		AuErr1("no memory\n");
++		iput(dir);
++		goto out;
++	}
++	args->flags[AuHn_PARENT] = flags[AuHn_PARENT];
++	args->flags[AuHn_CHILD] = flags[AuHn_CHILD];
++	args->mask = mask;
++	args->dir = dir;
++	args->h_dir = igrab(h_dir);
++	if (h_child_inode)
++		h_child_inode = igrab(h_child_inode); /* can be NULL */
++	args->h_child_inode = h_child_inode;
++	args->h_child_nlen = len;
++	if (len) {
++		p = (void *)args;
++		p += sizeof(*args);
++		memcpy(p, h_child_name, len);
++		p[len] = 0;
++	}
++
++	/* NFS fires the event for silly-renamed one from kworker */
++	f = 0;
++	if (!dir->i_nlink
++	    || (au_test_nfs(h_dir->i_sb) && (mask & FS_DELETE)))
++		f = AuWkq_NEST;
++	err = au_wkq_nowait(au_hn_bh, args, dir->i_sb, f);
++	if (unlikely(err)) {
++		pr_err("wkq %d\n", err);
++		iput(args->h_child_inode);
++		iput(args->h_dir);
++		iput(args->dir);
++		au_kfree_rcu(args);
++	}
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm)
++{
++	int err;
++
++	AuDebugOn(!(udba & AuOptMask_UDBA));
++
++	err = 0;
++	if (au_hnotify_op.reset_br)
++		err = au_hnotify_op.reset_br(udba, br, perm);
++
++	return err;
++}
++
++int au_hnotify_init_br(struct au_branch *br, int perm)
++{
++	int err;
++
++	err = 0;
++	if (au_hnotify_op.init_br)
++		err = au_hnotify_op.init_br(br, perm);
++
++	return err;
++}
++
++void au_hnotify_fin_br(struct au_branch *br)
++{
++	if (au_hnotify_op.fin_br)
++		au_hnotify_op.fin_br(br);
++}
++
++static void au_hn_destroy_cache(void)
++{
++	kmem_cache_destroy(au_cache[AuCache_HNOTIFY]);
++	au_cache[AuCache_HNOTIFY] = NULL;
++}
++
++int __init au_hnotify_init(void)
++{
++	int err;
++
++	err = -ENOMEM;
++	au_cache[AuCache_HNOTIFY] = AuCache(au_hnotify);
++	if (au_cache[AuCache_HNOTIFY]) {
++		err = 0;
++		if (au_hnotify_op.init)
++			err = au_hnotify_op.init();
++		if (unlikely(err))
++			au_hn_destroy_cache();
++	}
++	AuTraceErr(err);
++	return err;
++}
++
++void au_hnotify_fin(void)
++{
++	if (au_hnotify_op.fin)
++		au_hnotify_op.fin();
++
++	/* cf. au_cache_fin() */
++	if (au_cache[AuCache_HNOTIFY])
++		au_hn_destroy_cache();
++}
+diff -Nurp linux-5.4/fs/aufs/iinfo.c linux-5.4-aufs/fs/aufs/iinfo.c
+--- linux-5.4/fs/aufs/iinfo.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/iinfo.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,273 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode private data
++ */
++
++#include "aufs.h"
++
++struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex)
++{
++	struct inode *h_inode;
++	struct au_hinode *hinode;
++
++	IiMustAnyLock(inode);
++
++	hinode = au_hinode(au_ii(inode), bindex);
++	h_inode = hinode->hi_inode;
++	AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
++	return h_inode;
++}
++
++/* todo: hard/soft set? */
++void au_hiput(struct au_hinode *hinode)
++{
++	au_hn_free(hinode);
++	dput(hinode->hi_whdentry);
++	iput(hinode->hi_inode);
++}
++
++unsigned int au_hi_flags(struct inode *inode, int isdir)
++{
++	unsigned int flags;
++	const unsigned int mnt_flags = au_mntflags(inode->i_sb);
++
++	flags = 0;
++	if (au_opt_test(mnt_flags, XINO))
++		au_fset_hi(flags, XINO);
++	if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY))
++		au_fset_hi(flags, HNOTIFY);
++	return flags;
++}
++
++void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
++		   struct inode *h_inode, unsigned int flags)
++{
++	struct au_hinode *hinode;
++	struct inode *hi;
++	struct au_iinfo *iinfo = au_ii(inode);
++
++	IiMustWriteLock(inode);
++
++	hinode = au_hinode(iinfo, bindex);
++	hi = hinode->hi_inode;
++	AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
++
++	if (hi)
++		au_hiput(hinode);
++	hinode->hi_inode = h_inode;
++	if (h_inode) {
++		int err;
++		struct super_block *sb = inode->i_sb;
++		struct au_branch *br;
++
++		AuDebugOn(inode->i_mode
++			  && (h_inode->i_mode & S_IFMT)
++			  != (inode->i_mode & S_IFMT));
++		if (bindex == iinfo->ii_btop)
++			au_cpup_igen(inode, h_inode);
++		br = au_sbr(sb, bindex);
++		hinode->hi_id = br->br_id;
++		if (au_ftest_hi(flags, XINO)) {
++			err = au_xino_write(sb, bindex, h_inode->i_ino,
++					    inode->i_ino);
++			if (unlikely(err))
++				AuIOErr1("failed au_xino_write() %d\n", err);
++		}
++
++		if (au_ftest_hi(flags, HNOTIFY)
++		    && au_br_hnotifyable(br->br_perm)) {
++			err = au_hn_alloc(hinode, inode);
++			if (unlikely(err))
++				AuIOErr1("au_hn_alloc() %d\n", err);
++		}
++	}
++}
++
++void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
++		  struct dentry *h_wh)
++{
++	struct au_hinode *hinode;
++
++	IiMustWriteLock(inode);
++
++	hinode = au_hinode(au_ii(inode), bindex);
++	AuDebugOn(hinode->hi_whdentry);
++	hinode->hi_whdentry = h_wh;
++}
++
++void au_update_iigen(struct inode *inode, int half)
++{
++	struct au_iinfo *iinfo;
++	struct au_iigen *iigen;
++	unsigned int sigen;
++
++	sigen = au_sigen(inode->i_sb);
++	iinfo = au_ii(inode);
++	iigen = &iinfo->ii_generation;
++	spin_lock(&iigen->ig_spin);
++	iigen->ig_generation = sigen;
++	if (half)
++		au_ig_fset(iigen->ig_flags, HALF_REFRESHED);
++	else
++		au_ig_fclr(iigen->ig_flags, HALF_REFRESHED);
++	spin_unlock(&iigen->ig_spin);
++}
++
++/* it may be called at remount time, too */
++void au_update_ibrange(struct inode *inode, int do_put_zero)
++{
++	struct au_iinfo *iinfo;
++	aufs_bindex_t bindex, bbot;
++
++	AuDebugOn(au_is_bad_inode(inode));
++	IiMustWriteLock(inode);
++
++	iinfo = au_ii(inode);
++	if (do_put_zero && iinfo->ii_btop >= 0) {
++		for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
++		     bindex++) {
++			struct inode *h_i;
++
++			h_i = au_hinode(iinfo, bindex)->hi_inode;
++			if (h_i
++			    && !h_i->i_nlink
++			    && !(h_i->i_state & I_LINKABLE))
++				au_set_h_iptr(inode, bindex, NULL, 0);
++		}
++	}
++
++	iinfo->ii_btop = -1;
++	iinfo->ii_bbot = -1;
++	bbot = au_sbbot(inode->i_sb);
++	for (bindex = 0; bindex <= bbot; bindex++)
++		if (au_hinode(iinfo, bindex)->hi_inode) {
++			iinfo->ii_btop = bindex;
++			break;
++		}
++	if (iinfo->ii_btop >= 0)
++		for (bindex = bbot; bindex >= iinfo->ii_btop; bindex--)
++			if (au_hinode(iinfo, bindex)->hi_inode) {
++				iinfo->ii_bbot = bindex;
++				break;
++			}
++	AuDebugOn(iinfo->ii_btop > iinfo->ii_bbot);
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_icntnr_init_once(void *_c)
++{
++	struct au_icntnr *c = _c;
++	struct au_iinfo *iinfo = &c->iinfo;
++
++	spin_lock_init(&iinfo->ii_generation.ig_spin);
++	au_rw_init(&iinfo->ii_rwsem);
++	inode_init_once(&c->vfs_inode);
++}
++
++void au_hinode_init(struct au_hinode *hinode)
++{
++	hinode->hi_inode = NULL;
++	hinode->hi_id = -1;
++	au_hn_init(hinode);
++	hinode->hi_whdentry = NULL;
++}
++
++int au_iinfo_init(struct inode *inode)
++{
++	struct au_iinfo *iinfo;
++	struct super_block *sb;
++	struct au_hinode *hi;
++	int nbr, i;
++
++	sb = inode->i_sb;
++	iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
++	nbr = au_sbbot(sb) + 1;
++	if (unlikely(nbr <= 0))
++		nbr = 1;
++	hi = kmalloc_array(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS);
++	if (hi) {
++		au_lcnt_inc(&au_sbi(sb)->si_ninodes);
++
++		iinfo->ii_hinode = hi;
++		for (i = 0; i < nbr; i++, hi++)
++			au_hinode_init(hi);
++
++		iinfo->ii_generation.ig_generation = au_sigen(sb);
++		iinfo->ii_btop = -1;
++		iinfo->ii_bbot = -1;
++		iinfo->ii_vdir = NULL;
++		return 0;
++	}
++	return -ENOMEM;
++}
++
++int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink)
++{
++	int err, i;
++	struct au_hinode *hip;
++
++	AuRwMustWriteLock(&iinfo->ii_rwsem);
++
++	err = -ENOMEM;
++	hip = au_krealloc(iinfo->ii_hinode, sizeof(*hip) * nbr, GFP_NOFS,
++			  may_shrink);
++	if (hip) {
++		iinfo->ii_hinode = hip;
++		i = iinfo->ii_bbot + 1;
++		hip += i;
++		for (; i < nbr; i++, hip++)
++			au_hinode_init(hip);
++		err = 0;
++	}
++
++	return err;
++}
++
++void au_iinfo_fin(struct inode *inode)
++{
++	struct au_iinfo *iinfo;
++	struct au_hinode *hi;
++	struct super_block *sb;
++	aufs_bindex_t bindex, bbot;
++	const unsigned char unlinked = !inode->i_nlink;
++
++	AuDebugOn(au_is_bad_inode(inode));
++
++	sb = inode->i_sb;
++	au_lcnt_dec(&au_sbi(sb)->si_ninodes);
++	if (si_pid_test(sb))
++		au_xino_delete_inode(inode, unlinked);
++	else {
++		/*
++		 * it is safe to hide the dependency between sbinfo and
++		 * sb->s_umount.
++		 */
++		lockdep_off();
++		si_noflush_read_lock(sb);
++		au_xino_delete_inode(inode, unlinked);
++		si_read_unlock(sb);
++		lockdep_on();
++	}
++
++	iinfo = au_ii(inode);
++	if (iinfo->ii_vdir)
++		au_vdir_free(iinfo->ii_vdir);
++
++	bindex = iinfo->ii_btop;
++	if (bindex >= 0) {
++		hi = au_hinode(iinfo, bindex);
++		bbot = iinfo->ii_bbot;
++		while (bindex++ <= bbot) {
++			if (hi->hi_inode)
++				au_hiput(hi);
++			hi++;
++		}
++	}
++	au_kfree_rcu(iinfo->ii_hinode);
++	AuRwDestroy(&iinfo->ii_rwsem);
++}
+diff -Nurp linux-5.4/fs/aufs/inode.c linux-5.4-aufs/fs/aufs/inode.c
+--- linux-5.4/fs/aufs/inode.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/inode.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,516 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode functions
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++struct inode *au_igrab(struct inode *inode)
++{
++	if (inode) {
++		AuDebugOn(!atomic_read(&inode->i_count));
++		ihold(inode);
++	}
++	return inode;
++}
++
++static void au_refresh_hinode_attr(struct inode *inode, int do_version)
++{
++	au_cpup_attr_all(inode, /*force*/0);
++	au_update_iigen(inode, /*half*/1);
++	if (do_version)
++		inode_inc_iversion(inode);
++}
++
++static int au_ii_refresh(struct inode *inode, int *update)
++{
++	int err, e, nbr;
++	umode_t type;
++	aufs_bindex_t bindex, new_bindex;
++	struct super_block *sb;
++	struct au_iinfo *iinfo;
++	struct au_hinode *p, *q, tmp;
++
++	AuDebugOn(au_is_bad_inode(inode));
++	IiMustWriteLock(inode);
++
++	*update = 0;
++	sb = inode->i_sb;
++	nbr = au_sbbot(sb) + 1;
++	type = inode->i_mode & S_IFMT;
++	iinfo = au_ii(inode);
++	err = au_hinode_realloc(iinfo, nbr, /*may_shrink*/0);
++	if (unlikely(err))
++		goto out;
++
++	AuDebugOn(iinfo->ii_btop < 0);
++	p = au_hinode(iinfo, iinfo->ii_btop);
++	for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
++	     bindex++, p++) {
++		if (!p->hi_inode)
++			continue;
++
++		AuDebugOn(type != (p->hi_inode->i_mode & S_IFMT));
++		new_bindex = au_br_index(sb, p->hi_id);
++		if (new_bindex == bindex)
++			continue;
++
++		if (new_bindex < 0) {
++			*update = 1;
++			au_hiput(p);
++			p->hi_inode = NULL;
++			continue;
++		}
++
++		if (new_bindex < iinfo->ii_btop)
++			iinfo->ii_btop = new_bindex;
++		if (iinfo->ii_bbot < new_bindex)
++			iinfo->ii_bbot = new_bindex;
++		/* swap two lower inode, and loop again */
++		q = au_hinode(iinfo, new_bindex);
++		tmp = *q;
++		*q = *p;
++		*p = tmp;
++		if (tmp.hi_inode) {
++			bindex--;
++			p--;
++		}
++	}
++	au_update_ibrange(inode, /*do_put_zero*/0);
++	au_hinode_realloc(iinfo, nbr, /*may_shrink*/1); /* harmless if err */
++	e = au_dy_irefresh(inode);
++	if (unlikely(e && !err))
++		err = e;
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++void au_refresh_iop(struct inode *inode, int force_getattr)
++{
++	int type;
++	struct au_sbinfo *sbi = au_sbi(inode->i_sb);
++	const struct inode_operations *iop
++		= force_getattr ? aufs_iop : sbi->si_iop_array;
++
++	if (inode->i_op == iop)
++		return;
++
++	switch (inode->i_mode & S_IFMT) {
++	case S_IFDIR:
++		type = AuIop_DIR;
++		break;
++	case S_IFLNK:
++		type = AuIop_SYMLINK;
++		break;
++	default:
++		type = AuIop_OTHER;
++		break;
++	}
++
++	inode->i_op = iop + type;
++	/* unnecessary smp_wmb() */
++}
++
++int au_refresh_hinode_self(struct inode *inode)
++{
++	int err, update;
++
++	err = au_ii_refresh(inode, &update);
++	if (!err)
++		au_refresh_hinode_attr(inode, update && S_ISDIR(inode->i_mode));
++
++	AuTraceErr(err);
++	return err;
++}
++
++int au_refresh_hinode(struct inode *inode, struct dentry *dentry)
++{
++	int err, e, update;
++	unsigned int flags;
++	umode_t mode;
++	aufs_bindex_t bindex, bbot;
++	unsigned char isdir;
++	struct au_hinode *p;
++	struct au_iinfo *iinfo;
++
++	err = au_ii_refresh(inode, &update);
++	if (unlikely(err))
++		goto out;
++
++	update = 0;
++	iinfo = au_ii(inode);
++	p = au_hinode(iinfo, iinfo->ii_btop);
++	mode = (inode->i_mode & S_IFMT);
++	isdir = S_ISDIR(mode);
++	flags = au_hi_flags(inode, isdir);
++	bbot = au_dbbot(dentry);
++	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
++		struct inode *h_i, *h_inode;
++		struct dentry *h_d;
++
++		h_d = au_h_dptr(dentry, bindex);
++		if (!h_d || d_is_negative(h_d))
++			continue;
++
++		h_inode = d_inode(h_d);
++		AuDebugOn(mode != (h_inode->i_mode & S_IFMT));
++		if (iinfo->ii_btop <= bindex && bindex <= iinfo->ii_bbot) {
++			h_i = au_h_iptr(inode, bindex);
++			if (h_i) {
++				if (h_i == h_inode)
++					continue;
++				err = -EIO;
++				break;
++			}
++		}
++		if (bindex < iinfo->ii_btop)
++			iinfo->ii_btop = bindex;
++		if (iinfo->ii_bbot < bindex)
++			iinfo->ii_bbot = bindex;
++		au_set_h_iptr(inode, bindex, au_igrab(h_inode), flags);
++		update = 1;
++	}
++	au_update_ibrange(inode, /*do_put_zero*/0);
++	e = au_dy_irefresh(inode);
++	if (unlikely(e && !err))
++		err = e;
++	if (!err)
++		au_refresh_hinode_attr(inode, update && isdir);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int set_inode(struct inode *inode, struct dentry *dentry)
++{
++	int err;
++	unsigned int flags;
++	umode_t mode;
++	aufs_bindex_t bindex, btop, btail;
++	unsigned char isdir;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++	struct au_iinfo *iinfo;
++	struct inode_operations *iop;
++
++	IiMustWriteLock(inode);
++
++	err = 0;
++	isdir = 0;
++	iop = au_sbi(inode->i_sb)->si_iop_array;
++	btop = au_dbtop(dentry);
++	h_dentry = au_h_dptr(dentry, btop);
++	h_inode = d_inode(h_dentry);
++	mode = h_inode->i_mode;
++	switch (mode & S_IFMT) {
++	case S_IFREG:
++		btail = au_dbtail(dentry);
++		inode->i_op = iop + AuIop_OTHER;
++		inode->i_fop = &aufs_file_fop;
++		err = au_dy_iaop(inode, btop, h_inode);
++		if (unlikely(err))
++			goto out;
++		break;
++	case S_IFDIR:
++		isdir = 1;
++		btail = au_dbtaildir(dentry);
++		inode->i_op = iop + AuIop_DIR;
++		inode->i_fop = &aufs_dir_fop;
++		break;
++	case S_IFLNK:
++		btail = au_dbtail(dentry);
++		inode->i_op = iop + AuIop_SYMLINK;
++		break;
++	case S_IFBLK:
++	case S_IFCHR:
++	case S_IFIFO:
++	case S_IFSOCK:
++		btail = au_dbtail(dentry);
++		inode->i_op = iop + AuIop_OTHER;
++		init_special_inode(inode, mode, h_inode->i_rdev);
++		break;
++	default:
++		AuIOErr("Unknown file type 0%o\n", mode);
++		err = -EIO;
++		goto out;
++	}
++
++	/* do not set hnotify for whiteouted dirs (SHWH mode) */
++	flags = au_hi_flags(inode, isdir);
++	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)
++	    && au_ftest_hi(flags, HNOTIFY)
++	    && dentry->d_name.len > AUFS_WH_PFX_LEN
++	    && !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))
++		au_fclr_hi(flags, HNOTIFY);
++	iinfo = au_ii(inode);
++	iinfo->ii_btop = btop;
++	iinfo->ii_bbot = btail;
++	for (bindex = btop; bindex <= btail; bindex++) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (h_dentry)
++			au_set_h_iptr(inode, bindex,
++				      au_igrab(d_inode(h_dentry)), flags);
++	}
++	au_cpup_attr_all(inode, /*force*/1);
++	/*
++	 * to force calling aufs_get_acl() every time,
++	 * do not call cache_no_acl() for aufs inode.
++	 */
++
++out:
++	return err;
++}
++
++/*
++ * successful returns with iinfo write_locked
++ * minus: errno
++ * zero: success, matched
++ * plus: no error, but unmatched
++ */
++static int reval_inode(struct inode *inode, struct dentry *dentry)
++{
++	int err;
++	unsigned int gen, igflags;
++	aufs_bindex_t bindex, bbot;
++	struct inode *h_inode, *h_dinode;
++	struct dentry *h_dentry;
++
++	/*
++	 * before this function, if aufs got any iinfo lock, it must be only
++	 * one, the parent dir.
++	 * it can happen by UDBA and the obsoleted inode number.
++	 */
++	err = -EIO;
++	if (unlikely(inode->i_ino == parent_ino(dentry)))
++		goto out;
++
++	err = 1;
++	ii_write_lock_new_child(inode);
++	h_dentry = au_h_dptr(dentry, au_dbtop(dentry));
++	h_dinode = d_inode(h_dentry);
++	bbot = au_ibbot(inode);
++	for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
++		h_inode = au_h_iptr(inode, bindex);
++		if (!h_inode || h_inode != h_dinode)
++			continue;
++
++		err = 0;
++		gen = au_iigen(inode, &igflags);
++		if (gen == au_digen(dentry)
++		    && !au_ig_ftest(igflags, HALF_REFRESHED))
++			break;
++
++		/* fully refresh inode using dentry */
++		err = au_refresh_hinode(inode, dentry);
++		if (!err)
++			au_update_iigen(inode, /*half*/0);
++		break;
++	}
++
++	if (unlikely(err))
++		ii_write_unlock(inode);
++out:
++	return err;
++}
++
++int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++	   unsigned int d_type, ino_t *ino)
++{
++	int err, idx;
++	const int isnondir = d_type != DT_DIR;
++
++	/* prevent hardlinked inode number from race condition */
++	if (isnondir) {
++		err = au_xinondir_enter(sb, bindex, h_ino, &idx);
++		if (unlikely(err))
++			goto out;
++	}
++
++	err = au_xino_read(sb, bindex, h_ino, ino);
++	if (unlikely(err))
++		goto out_xinondir;
++
++	if (!*ino) {
++		err = -EIO;
++		*ino = au_xino_new_ino(sb);
++		if (unlikely(!*ino))
++			goto out_xinondir;
++		err = au_xino_write(sb, bindex, h_ino, *ino);
++		if (unlikely(err))
++			goto out_xinondir;
++	}
++
++out_xinondir:
++	if (isnondir && idx >= 0)
++		au_xinondir_leave(sb, bindex, h_ino, idx);
++out:
++	return err;
++}
++
++/* successful returns with iinfo write_locked */
++/* todo: return with unlocked? */
++struct inode *au_new_inode(struct dentry *dentry, int must_new)
++{
++	struct inode *inode, *h_inode;
++	struct dentry *h_dentry;
++	struct super_block *sb;
++	ino_t h_ino, ino;
++	int err, idx, hlinked;
++	aufs_bindex_t btop;
++
++	sb = dentry->d_sb;
++	btop = au_dbtop(dentry);
++	h_dentry = au_h_dptr(dentry, btop);
++	h_inode = d_inode(h_dentry);
++	h_ino = h_inode->i_ino;
++	hlinked = !d_is_dir(h_dentry) && h_inode->i_nlink > 1;
++
++new_ino:
++	/*
++	 * stop 'race'-ing between hardlinks under different
++	 * parents.
++	 */
++	if (hlinked) {
++		err = au_xinondir_enter(sb, btop, h_ino, &idx);
++		inode = ERR_PTR(err);
++		if (unlikely(err))
++			goto out;
++	}
++
++	err = au_xino_read(sb, btop, h_ino, &ino);
++	inode = ERR_PTR(err);
++	if (unlikely(err))
++		goto out_xinondir;
++
++	if (!ino) {
++		ino = au_xino_new_ino(sb);
++		if (unlikely(!ino)) {
++			inode = ERR_PTR(-EIO);
++			goto out_xinondir;
++		}
++	}
++
++	AuDbg("i%lu\n", (unsigned long)ino);
++	inode = au_iget_locked(sb, ino);
++	err = PTR_ERR(inode);
++	if (IS_ERR(inode))
++		goto out_xinondir;
++
++	AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW));
++	if (inode->i_state & I_NEW) {
++		ii_write_lock_new_child(inode);
++		err = set_inode(inode, dentry);
++		if (!err) {
++			unlock_new_inode(inode);
++			goto out_xinondir; /* success */
++		}
++
++		/*
++		 * iget_failed() calls iput(), but we need to call
++		 * ii_write_unlock() after iget_failed(). so dirty hack for
++		 * i_count.
++		 */
++		atomic_inc(&inode->i_count);
++		iget_failed(inode);
++		ii_write_unlock(inode);
++		au_xino_write(sb, btop, h_ino, /*ino*/0);
++		/* ignore this error */
++		goto out_iput;
++	} else if (!must_new && !IS_DEADDIR(inode) && inode->i_nlink) {
++		/*
++		 * horrible race condition between lookup, readdir and copyup
++		 * (or something).
++		 */
++		if (hlinked && idx >= 0)
++			au_xinondir_leave(sb, btop, h_ino, idx);
++		err = reval_inode(inode, dentry);
++		if (unlikely(err < 0)) {
++			hlinked = 0;
++			goto out_iput;
++		}
++		if (!err)
++			goto out; /* success */
++		else if (hlinked && idx >= 0) {
++			err = au_xinondir_enter(sb, btop, h_ino, &idx);
++			if (unlikely(err)) {
++				iput(inode);
++				inode = ERR_PTR(err);
++				goto out;
++			}
++		}
++	}
++
++	if (unlikely(au_test_fs_unique_ino(h_inode)))
++		AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir,"
++			" b%d, %s, %pd, hi%lu, i%lu.\n",
++			btop, au_sbtype(h_dentry->d_sb), dentry,
++			(unsigned long)h_ino, (unsigned long)ino);
++	ino = 0;
++	err = au_xino_write(sb, btop, h_ino, /*ino*/0);
++	if (!err) {
++		iput(inode);
++		if (hlinked && idx >= 0)
++			au_xinondir_leave(sb, btop, h_ino, idx);
++		goto new_ino;
++	}
++
++out_iput:
++	iput(inode);
++	inode = ERR_PTR(err);
++out_xinondir:
++	if (hlinked && idx >= 0)
++		au_xinondir_leave(sb, btop, h_ino, idx);
++out:
++	return inode;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
++	       struct inode *inode)
++{
++	int err;
++	struct inode *hi;
++
++	err = au_br_rdonly(au_sbr(sb, bindex));
++
++	/* pseudo-link after flushed may happen out of bounds */
++	if (!err
++	    && inode
++	    && au_ibtop(inode) <= bindex
++	    && bindex <= au_ibbot(inode)) {
++		/*
++		 * permission check is unnecessary since vfsub routine
++		 * will be called later
++		 */
++		hi = au_h_iptr(inode, bindex);
++		if (hi)
++			err = IS_IMMUTABLE(hi) ? -EROFS : 0;
++	}
++
++	return err;
++}
++
++int au_test_h_perm(struct inode *h_inode, int mask)
++{
++	if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID))
++		return 0;
++	return inode_permission(h_inode, mask);
++}
++
++int au_test_h_perm_sio(struct inode *h_inode, int mask)
++{
++	if (au_test_nfs(h_inode->i_sb)
++	    && (mask & MAY_WRITE)
++	    && S_ISDIR(h_inode->i_mode))
++		mask |= MAY_READ; /* force permission check */
++	return au_test_h_perm(h_inode, mask);
++}
+diff -Nurp linux-5.4/fs/aufs/inode.h linux-5.4-aufs/fs/aufs/inode.h
+--- linux-5.4/fs/aufs/inode.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/inode.h	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,685 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode operations
++ */
++
++#ifndef __AUFS_INODE_H__
++#define __AUFS_INODE_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fsnotify.h>
++#include "rwsem.h"
++
++struct vfsmount;
++
++struct au_hnotify {
++#ifdef CONFIG_AUFS_HNOTIFY
++#ifdef CONFIG_AUFS_HFSNOTIFY
++	/* never use fsnotify_add_vfsmount_mark() */
++	struct fsnotify_mark		hn_mark;
++#endif
++	struct inode		*hn_aufs_inode;	/* no get/put */
++	struct rcu_head		rcu;
++#endif
++} ____cacheline_aligned_in_smp;
++
++struct au_hinode {
++	struct inode		*hi_inode;
++	aufs_bindex_t		hi_id;
++#ifdef CONFIG_AUFS_HNOTIFY
++	struct au_hnotify	*hi_notify;
++#endif
++
++	/* reference to the copied-up whiteout with get/put */
++	struct dentry		*hi_whdentry;
++};
++
++/* ig_flags */
++#define AuIG_HALF_REFRESHED		1
++#define au_ig_ftest(flags, name)	((flags) & AuIG_##name)
++#define au_ig_fset(flags, name) \
++	do { (flags) |= AuIG_##name; } while (0)
++#define au_ig_fclr(flags, name) \
++	do { (flags) &= ~AuIG_##name; } while (0)
++
++struct au_iigen {
++	spinlock_t	ig_spin;
++	__u32		ig_generation, ig_flags;
++};
++
++struct au_vdir;
++struct au_iinfo {
++	struct au_iigen		ii_generation;
++	struct super_block	*ii_hsb1;	/* no get/put */
++
++	struct au_rwsem		ii_rwsem;
++	aufs_bindex_t		ii_btop, ii_bbot;
++	__u32			ii_higen;
++	struct au_hinode	*ii_hinode;
++	struct au_vdir		*ii_vdir;
++};
++
++struct au_icntnr {
++	struct au_iinfo		iinfo;
++	struct inode		vfs_inode;
++	struct hlist_bl_node	plink;
++	struct rcu_head		rcu;
++} ____cacheline_aligned_in_smp;
++
++/* au_pin flags */
++#define AuPin_DI_LOCKED		1
++#define AuPin_MNT_WRITE		(1 << 1)
++#define au_ftest_pin(flags, name)	((flags) & AuPin_##name)
++#define au_fset_pin(flags, name) \
++	do { (flags) |= AuPin_##name; } while (0)
++#define au_fclr_pin(flags, name) \
++	do { (flags) &= ~AuPin_##name; } while (0)
++
++struct au_pin {
++	/* input */
++	struct dentry *dentry;
++	unsigned int udba;
++	unsigned char lsc_di, lsc_hi, flags;
++	aufs_bindex_t bindex;
++
++	/* output */
++	struct dentry *parent;
++	struct au_hinode *hdir;
++	struct vfsmount *h_mnt;
++
++	/* temporary unlock/relock for copyup */
++	struct dentry *h_dentry, *h_parent;
++	struct au_branch *br;
++	struct task_struct *task;
++};
++
++void au_pin_hdir_unlock(struct au_pin *p);
++int au_pin_hdir_lock(struct au_pin *p);
++int au_pin_hdir_relock(struct au_pin *p);
++void au_pin_hdir_acquire_nest(struct au_pin *p);
++void au_pin_hdir_release(struct au_pin *p);
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct au_iinfo *au_ii(struct inode *inode)
++{
++	BUG_ON(is_bad_inode(inode));
++	return &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* inode.c */
++struct inode *au_igrab(struct inode *inode);
++void au_refresh_iop(struct inode *inode, int force_getattr);
++int au_refresh_hinode_self(struct inode *inode);
++int au_refresh_hinode(struct inode *inode, struct dentry *dentry);
++int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++	   unsigned int d_type, ino_t *ino);
++struct inode *au_new_inode(struct dentry *dentry, int must_new);
++int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
++	       struct inode *inode);
++int au_test_h_perm(struct inode *h_inode, int mask);
++int au_test_h_perm_sio(struct inode *h_inode, int mask);
++
++static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex,
++			    ino_t h_ino, unsigned int d_type, ino_t *ino)
++{
++#ifdef CONFIG_AUFS_SHWH
++	return au_ino(sb, bindex, h_ino, d_type, ino);
++#else
++	return 0;
++#endif
++}
++
++/* i_op.c */
++enum {
++	AuIop_SYMLINK,
++	AuIop_DIR,
++	AuIop_OTHER,
++	AuIop_Last
++};
++extern struct inode_operations aufs_iop[AuIop_Last],
++	aufs_iop_nogetattr[AuIop_Last];
++
++/* au_wr_dir flags */
++#define AuWrDir_ADD_ENTRY	1
++#define AuWrDir_ISDIR		(1 << 1)
++#define AuWrDir_TMPFILE		(1 << 2)
++#define au_ftest_wrdir(flags, name)	((flags) & AuWrDir_##name)
++#define au_fset_wrdir(flags, name) \
++	do { (flags) |= AuWrDir_##name; } while (0)
++#define au_fclr_wrdir(flags, name) \
++	do { (flags) &= ~AuWrDir_##name; } while (0)
++
++struct au_wr_dir_args {
++	aufs_bindex_t force_btgt;
++	unsigned char flags;
++};
++int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
++	      struct au_wr_dir_args *args);
++
++struct dentry *au_pinned_h_parent(struct au_pin *pin);
++void au_pin_init(struct au_pin *pin, struct dentry *dentry,
++		 aufs_bindex_t bindex, int lsc_di, int lsc_hi,
++		 unsigned int udba, unsigned char flags);
++int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
++	   unsigned int udba, unsigned char flags) __must_check;
++int au_do_pin(struct au_pin *pin) __must_check;
++void au_unpin(struct au_pin *pin);
++int au_reval_for_attr(struct dentry *dentry, unsigned int sigen);
++
++#define AuIcpup_DID_CPUP	1
++#define au_ftest_icpup(flags, name)	((flags) & AuIcpup_##name)
++#define au_fset_icpup(flags, name) \
++	do { (flags) |= AuIcpup_##name; } while (0)
++#define au_fclr_icpup(flags, name) \
++	do { (flags) &= ~AuIcpup_##name; } while (0)
++
++struct au_icpup_args {
++	unsigned char flags;
++	unsigned char pin_flags;
++	aufs_bindex_t btgt;
++	unsigned int udba;
++	struct au_pin pin;
++	struct path h_path;
++	struct inode *h_inode;
++};
++
++int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
++		     struct au_icpup_args *a);
++
++int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path,
++		      int locked);
++
++/* i_op_add.c */
++int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
++	       struct dentry *h_parent, int isdir);
++int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
++	       dev_t dev);
++int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname);
++int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
++		bool want_excl);
++struct vfsub_aopen_args;
++int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
++		       struct vfsub_aopen_args *args);
++int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode);
++int aufs_link(struct dentry *src_dentry, struct inode *dir,
++	      struct dentry *dentry);
++int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
++
++/* i_op_del.c */
++int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup);
++int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
++	       struct dentry *h_parent, int isdir);
++int aufs_unlink(struct inode *dir, struct dentry *dentry);
++int aufs_rmdir(struct inode *dir, struct dentry *dentry);
++
++/* i_op_ren.c */
++int au_wbr(struct dentry *dentry, aufs_bindex_t btgt);
++int aufs_rename(struct inode *src_dir, struct dentry *src_dentry,
++		struct inode *dir, struct dentry *dentry,
++		unsigned int flags);
++
++/* iinfo.c */
++struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex);
++void au_hiput(struct au_hinode *hinode);
++void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
++		  struct dentry *h_wh);
++unsigned int au_hi_flags(struct inode *inode, int isdir);
++
++/* hinode flags */
++#define AuHi_XINO	1
++#define AuHi_HNOTIFY	(1 << 1)
++#define au_ftest_hi(flags, name)	((flags) & AuHi_##name)
++#define au_fset_hi(flags, name) \
++	do { (flags) |= AuHi_##name; } while (0)
++#define au_fclr_hi(flags, name) \
++	do { (flags) &= ~AuHi_##name; } while (0)
++
++#ifndef CONFIG_AUFS_HNOTIFY
++#undef AuHi_HNOTIFY
++#define AuHi_HNOTIFY	0
++#endif
++
++void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
++		   struct inode *h_inode, unsigned int flags);
++
++void au_update_iigen(struct inode *inode, int half);
++void au_update_ibrange(struct inode *inode, int do_put_zero);
++
++void au_icntnr_init_once(void *_c);
++void au_hinode_init(struct au_hinode *hinode);
++int au_iinfo_init(struct inode *inode);
++void au_iinfo_fin(struct inode *inode);
++int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink);
++
++#ifdef CONFIG_PROC_FS
++/* plink.c */
++int au_plink_maint(struct super_block *sb, int flags);
++struct au_sbinfo;
++void au_plink_maint_leave(struct au_sbinfo *sbinfo);
++int au_plink_maint_enter(struct super_block *sb);
++#ifdef CONFIG_AUFS_DEBUG
++void au_plink_list(struct super_block *sb);
++#else
++AuStubVoid(au_plink_list, struct super_block *sb)
++#endif
++int au_plink_test(struct inode *inode);
++struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex);
++void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
++		     struct dentry *h_dentry);
++void au_plink_put(struct super_block *sb, int verbose);
++void au_plink_clean(struct super_block *sb, int verbose);
++void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id);
++#else
++AuStubInt0(au_plink_maint, struct super_block *sb, int flags);
++AuStubVoid(au_plink_maint_leave, struct au_sbinfo *sbinfo);
++AuStubInt0(au_plink_maint_enter, struct super_block *sb);
++AuStubVoid(au_plink_list, struct super_block *sb);
++AuStubInt0(au_plink_test, struct inode *inode);
++AuStub(struct dentry *, au_plink_lkup, return NULL,
++       struct inode *inode, aufs_bindex_t bindex);
++AuStubVoid(au_plink_append, struct inode *inode, aufs_bindex_t bindex,
++	   struct dentry *h_dentry);
++AuStubVoid(au_plink_put, struct super_block *sb, int verbose);
++AuStubVoid(au_plink_clean, struct super_block *sb, int verbose);
++AuStubVoid(au_plink_half_refresh, struct super_block *sb, aufs_bindex_t br_id);
++#endif /* CONFIG_PROC_FS */
++
++#ifdef CONFIG_AUFS_XATTR
++/* xattr.c */
++int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
++		  unsigned int verbose);
++ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size);
++void au_xattr_init(struct super_block *sb);
++#else
++AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src,
++	   int ignore_flags, unsigned int verbose);
++AuStubVoid(au_xattr_init, struct super_block *sb);
++#endif
++
++#ifdef CONFIG_FS_POSIX_ACL
++struct posix_acl *aufs_get_acl(struct inode *inode, int type);
++int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
++#endif
++
++#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
++enum {
++	AU_XATTR_SET,
++	AU_ACL_SET
++};
++
++struct au_sxattr {
++	int type;
++	union {
++		struct {
++			const char	*name;
++			const void	*value;
++			size_t		size;
++			int		flags;
++		} set;
++		struct {
++			struct posix_acl *acl;
++			int		type;
++		} acl_set;
++	} u;
++};
++ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
++		  struct au_sxattr *arg);
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++/* lock subclass for iinfo */
++enum {
++	AuLsc_II_CHILD,		/* child first */
++	AuLsc_II_CHILD2,	/* rename(2), link(2), and cpup at hnotify */
++	AuLsc_II_CHILD3,	/* copyup dirs */
++	AuLsc_II_PARENT,	/* see AuLsc_I_PARENT in vfsub.h */
++	AuLsc_II_PARENT2,
++	AuLsc_II_PARENT3,	/* copyup dirs */
++	AuLsc_II_NEW_CHILD
++};
++
++/*
++ * ii_read_lock_child, ii_write_lock_child,
++ * ii_read_lock_child2, ii_write_lock_child2,
++ * ii_read_lock_child3, ii_write_lock_child3,
++ * ii_read_lock_parent, ii_write_lock_parent,
++ * ii_read_lock_parent2, ii_write_lock_parent2,
++ * ii_read_lock_parent3, ii_write_lock_parent3,
++ * ii_read_lock_new_child, ii_write_lock_new_child,
++ */
++#define AuReadLockFunc(name, lsc) \
++static inline void ii_read_lock_##name(struct inode *i) \
++{ \
++	au_rw_read_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
++}
++
++#define AuWriteLockFunc(name, lsc) \
++static inline void ii_write_lock_##name(struct inode *i) \
++{ \
++	au_rw_write_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
++}
++
++#define AuRWLockFuncs(name, lsc) \
++	AuReadLockFunc(name, lsc) \
++	AuWriteLockFunc(name, lsc)
++
++AuRWLockFuncs(child, CHILD);
++AuRWLockFuncs(child2, CHILD2);
++AuRWLockFuncs(child3, CHILD3);
++AuRWLockFuncs(parent, PARENT);
++AuRWLockFuncs(parent2, PARENT2);
++AuRWLockFuncs(parent3, PARENT3);
++AuRWLockFuncs(new_child, NEW_CHILD);
++
++#undef AuReadLockFunc
++#undef AuWriteLockFunc
++#undef AuRWLockFuncs
++
++#define ii_read_unlock(i)	au_rw_read_unlock(&au_ii(i)->ii_rwsem)
++#define ii_write_unlock(i)	au_rw_write_unlock(&au_ii(i)->ii_rwsem)
++#define ii_downgrade_lock(i)	au_rw_dgrade_lock(&au_ii(i)->ii_rwsem)
++
++#define IiMustNoWaiters(i)	AuRwMustNoWaiters(&au_ii(i)->ii_rwsem)
++#define IiMustAnyLock(i)	AuRwMustAnyLock(&au_ii(i)->ii_rwsem)
++#define IiMustWriteLock(i)	AuRwMustWriteLock(&au_ii(i)->ii_rwsem)
++
++/* ---------------------------------------------------------------------- */
++
++static inline void au_icntnr_init(struct au_icntnr *c)
++{
++#ifdef CONFIG_AUFS_DEBUG
++	c->vfs_inode.i_mode = 0;
++#endif
++}
++
++static inline unsigned int au_iigen(struct inode *inode, unsigned int *igflags)
++{
++	unsigned int gen;
++	struct au_iinfo *iinfo;
++	struct au_iigen *iigen;
++
++	iinfo = au_ii(inode);
++	iigen = &iinfo->ii_generation;
++	spin_lock(&iigen->ig_spin);
++	if (igflags)
++		*igflags = iigen->ig_flags;
++	gen = iigen->ig_generation;
++	spin_unlock(&iigen->ig_spin);
++
++	return gen;
++}
++
++/* tiny test for inode number */
++/* tmpfs generation is too rough */
++static inline int au_test_higen(struct inode *inode, struct inode *h_inode)
++{
++	struct au_iinfo *iinfo;
++
++	iinfo = au_ii(inode);
++	AuRwMustAnyLock(&iinfo->ii_rwsem);
++	return !(iinfo->ii_hsb1 == h_inode->i_sb
++		 && iinfo->ii_higen == h_inode->i_generation);
++}
++
++static inline void au_iigen_dec(struct inode *inode)
++{
++	struct au_iinfo *iinfo;
++	struct au_iigen *iigen;
++
++	iinfo = au_ii(inode);
++	iigen = &iinfo->ii_generation;
++	spin_lock(&iigen->ig_spin);
++	iigen->ig_generation--;
++	spin_unlock(&iigen->ig_spin);
++}
++
++static inline int au_iigen_test(struct inode *inode, unsigned int sigen)
++{
++	int err;
++
++	err = 0;
++	if (unlikely(inode && au_iigen(inode, NULL) != sigen))
++		err = -EIO;
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct au_hinode *au_hinode(struct au_iinfo *iinfo,
++					  aufs_bindex_t bindex)
++{
++	return iinfo->ii_hinode + bindex;
++}
++
++static inline int au_is_bad_inode(struct inode *inode)
++{
++	return !!(is_bad_inode(inode) || !au_hinode(au_ii(inode), 0));
++}
++
++static inline aufs_bindex_t au_ii_br_id(struct inode *inode,
++					aufs_bindex_t bindex)
++{
++	IiMustAnyLock(inode);
++	return au_hinode(au_ii(inode), bindex)->hi_id;
++}
++
++static inline aufs_bindex_t au_ibtop(struct inode *inode)
++{
++	IiMustAnyLock(inode);
++	return au_ii(inode)->ii_btop;
++}
++
++static inline aufs_bindex_t au_ibbot(struct inode *inode)
++{
++	IiMustAnyLock(inode);
++	return au_ii(inode)->ii_bbot;
++}
++
++static inline struct au_vdir *au_ivdir(struct inode *inode)
++{
++	IiMustAnyLock(inode);
++	return au_ii(inode)->ii_vdir;
++}
++
++static inline struct dentry *au_hi_wh(struct inode *inode, aufs_bindex_t bindex)
++{
++	IiMustAnyLock(inode);
++	return au_hinode(au_ii(inode), bindex)->hi_whdentry;
++}
++
++static inline void au_set_ibtop(struct inode *inode, aufs_bindex_t bindex)
++{
++	IiMustWriteLock(inode);
++	au_ii(inode)->ii_btop = bindex;
++}
++
++static inline void au_set_ibbot(struct inode *inode, aufs_bindex_t bindex)
++{
++	IiMustWriteLock(inode);
++	au_ii(inode)->ii_bbot = bindex;
++}
++
++static inline void au_set_ivdir(struct inode *inode, struct au_vdir *vdir)
++{
++	IiMustWriteLock(inode);
++	au_ii(inode)->ii_vdir = vdir;
++}
++
++static inline struct au_hinode *au_hi(struct inode *inode, aufs_bindex_t bindex)
++{
++	IiMustAnyLock(inode);
++	return au_hinode(au_ii(inode), bindex);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct dentry *au_pinned_parent(struct au_pin *pin)
++{
++	if (pin)
++		return pin->parent;
++	return NULL;
++}
++
++static inline struct inode *au_pinned_h_dir(struct au_pin *pin)
++{
++	if (pin && pin->hdir)
++		return pin->hdir->hi_inode;
++	return NULL;
++}
++
++static inline struct au_hinode *au_pinned_hdir(struct au_pin *pin)
++{
++	if (pin)
++		return pin->hdir;
++	return NULL;
++}
++
++static inline void au_pin_set_dentry(struct au_pin *pin, struct dentry *dentry)
++{
++	if (pin)
++		pin->dentry = dentry;
++}
++
++static inline void au_pin_set_parent_lflag(struct au_pin *pin,
++					   unsigned char lflag)
++{
++	if (pin) {
++		if (lflag)
++			au_fset_pin(pin->flags, DI_LOCKED);
++		else
++			au_fclr_pin(pin->flags, DI_LOCKED);
++	}
++}
++
++#if 0 /* reserved */
++static inline void au_pin_set_parent(struct au_pin *pin, struct dentry *parent)
++{
++	if (pin) {
++		dput(pin->parent);
++		pin->parent = dget(parent);
++	}
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++struct au_branch;
++#ifdef CONFIG_AUFS_HNOTIFY
++struct au_hnotify_op {
++	void (*ctl)(struct au_hinode *hinode, int do_set);
++	int (*alloc)(struct au_hinode *hinode);
++
++	/*
++	 * if it returns true, the the caller should free hinode->hi_notify,
++	 * otherwise ->free() frees it.
++	 */
++	int (*free)(struct au_hinode *hinode,
++		    struct au_hnotify *hn) __must_check;
++
++	void (*fin)(void);
++	int (*init)(void);
++
++	int (*reset_br)(unsigned int udba, struct au_branch *br, int perm);
++	void (*fin_br)(struct au_branch *br);
++	int (*init_br)(struct au_branch *br, int perm);
++};
++
++/* hnotify.c */
++int au_hn_alloc(struct au_hinode *hinode, struct inode *inode);
++void au_hn_free(struct au_hinode *hinode);
++void au_hn_ctl(struct au_hinode *hinode, int do_set);
++void au_hn_reset(struct inode *inode, unsigned int flags);
++int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
++	       const struct qstr *h_child_qstr, struct inode *h_child_inode);
++int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm);
++int au_hnotify_init_br(struct au_branch *br, int perm);
++void au_hnotify_fin_br(struct au_branch *br);
++int __init au_hnotify_init(void);
++void au_hnotify_fin(void);
++
++/* hfsnotify.c */
++extern const struct au_hnotify_op au_hnotify_op;
++
++static inline
++void au_hn_init(struct au_hinode *hinode)
++{
++	hinode->hi_notify = NULL;
++}
++
++static inline struct au_hnotify *au_hn(struct au_hinode *hinode)
++{
++	return hinode->hi_notify;
++}
++
++#else
++AuStub(int, au_hn_alloc, return -EOPNOTSUPP,
++       struct au_hinode *hinode __maybe_unused,
++       struct inode *inode __maybe_unused)
++AuStub(struct au_hnotify *, au_hn, return NULL, struct au_hinode *hinode)
++AuStubVoid(au_hn_free, struct au_hinode *hinode __maybe_unused)
++AuStubVoid(au_hn_ctl, struct au_hinode *hinode __maybe_unused,
++	   int do_set __maybe_unused)
++AuStubVoid(au_hn_reset, struct inode *inode __maybe_unused,
++	   unsigned int flags __maybe_unused)
++AuStubInt0(au_hnotify_reset_br, unsigned int udba __maybe_unused,
++	   struct au_branch *br __maybe_unused,
++	   int perm __maybe_unused)
++AuStubInt0(au_hnotify_init_br, struct au_branch *br __maybe_unused,
++	   int perm __maybe_unused)
++AuStubVoid(au_hnotify_fin_br, struct au_branch *br __maybe_unused)
++AuStubInt0(__init au_hnotify_init, void)
++AuStubVoid(au_hnotify_fin, void)
++AuStubVoid(au_hn_init, struct au_hinode *hinode __maybe_unused)
++#endif /* CONFIG_AUFS_HNOTIFY */
++
++static inline void au_hn_suspend(struct au_hinode *hdir)
++{
++	au_hn_ctl(hdir, /*do_set*/0);
++}
++
++static inline void au_hn_resume(struct au_hinode *hdir)
++{
++	au_hn_ctl(hdir, /*do_set*/1);
++}
++
++static inline void au_hn_inode_lock(struct au_hinode *hdir)
++{
++	inode_lock(hdir->hi_inode);
++	au_hn_suspend(hdir);
++}
++
++static inline void au_hn_inode_lock_nested(struct au_hinode *hdir,
++					  unsigned int sc __maybe_unused)
++{
++	inode_lock_nested(hdir->hi_inode, sc);
++	au_hn_suspend(hdir);
++}
++
++#if 0 /* unused */
++#include "vfsub.h"
++static inline void au_hn_inode_lock_shared_nested(struct au_hinode *hdir,
++						  unsigned int sc)
++{
++	inode_lock_shared_nested(hdir->hi_inode, sc);
++	au_hn_suspend(hdir);
++}
++#endif
++
++static inline void au_hn_inode_unlock(struct au_hinode *hdir)
++{
++	au_hn_resume(hdir);
++	inode_unlock(hdir->hi_inode);
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_INODE_H__ */
+diff -Nurp linux-5.4/fs/aufs/ioctl.c linux-5.4-aufs/fs/aufs/ioctl.c
+--- linux-5.4/fs/aufs/ioctl.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/ioctl.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,207 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * ioctl
++ * plink-management and readdir in userspace.
++ * assist the pathconf(3) wrapper library.
++ * move-down
++ * File-based Hierarchical Storage Management.
++ */
++
++#include <linux/compat.h>
++#include <linux/file.h>
++#include "aufs.h"
++
++static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg)
++{
++	int err, fd;
++	aufs_bindex_t wbi, bindex, bbot;
++	struct file *h_file;
++	struct super_block *sb;
++	struct dentry *root;
++	struct au_branch *br;
++	struct aufs_wbr_fd wbrfd = {
++		.oflags	= au_dir_roflags,
++		.brid	= -1
++	};
++	const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY
++		| O_NOATIME | O_CLOEXEC;
++
++	AuDebugOn(wbrfd.oflags & ~valid);
++
++	if (arg) {
++		err = copy_from_user(&wbrfd, arg, sizeof(wbrfd));
++		if (unlikely(err)) {
++			err = -EFAULT;
++			goto out;
++		}
++
++		err = -EINVAL;
++		AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid);
++		wbrfd.oflags |= au_dir_roflags;
++		AuDbg("0%o\n", wbrfd.oflags);
++		if (unlikely(wbrfd.oflags & ~valid))
++			goto out;
++	}
++
++	fd = get_unused_fd_flags(0);
++	err = fd;
++	if (unlikely(fd < 0))
++		goto out;
++
++	h_file = ERR_PTR(-EINVAL);
++	wbi = 0;
++	br = NULL;
++	sb = path->dentry->d_sb;
++	root = sb->s_root;
++	aufs_read_lock(root, AuLock_IR);
++	bbot = au_sbbot(sb);
++	if (wbrfd.brid >= 0) {
++		wbi = au_br_index(sb, wbrfd.brid);
++		if (unlikely(wbi < 0 || wbi > bbot))
++			goto out_unlock;
++	}
++
++	h_file = ERR_PTR(-ENOENT);
++	br = au_sbr(sb, wbi);
++	if (!au_br_writable(br->br_perm)) {
++		if (arg)
++			goto out_unlock;
++
++		bindex = wbi + 1;
++		wbi = -1;
++		for (; bindex <= bbot; bindex++) {
++			br = au_sbr(sb, bindex);
++			if (au_br_writable(br->br_perm)) {
++				wbi = bindex;
++				br = au_sbr(sb, wbi);
++				break;
++			}
++		}
++	}
++	AuDbg("wbi %d\n", wbi);
++	if (wbi >= 0)
++		h_file = au_h_open(root, wbi, wbrfd.oflags, NULL,
++				   /*force_wr*/0);
++
++out_unlock:
++	aufs_read_unlock(root, AuLock_IR);
++	err = PTR_ERR(h_file);
++	if (IS_ERR(h_file))
++		goto out_fd;
++
++	au_lcnt_dec(&br->br_nfiles); /* cf. au_h_open() */
++	fd_install(fd, h_file);
++	err = fd;
++	goto out; /* success */
++
++out_fd:
++	put_unused_fd(fd);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	long err;
++	struct dentry *dentry;
++
++	switch (cmd) {
++	case AUFS_CTL_RDU:
++	case AUFS_CTL_RDU_INO:
++		err = au_rdu_ioctl(file, cmd, arg);
++		break;
++
++	case AUFS_CTL_WBR_FD:
++		err = au_wbr_fd(&file->f_path, (void __user *)arg);
++		break;
++
++	case AUFS_CTL_IBUSY:
++		err = au_ibusy_ioctl(file, arg);
++		break;
++
++	case AUFS_CTL_BRINFO:
++		err = au_brinfo_ioctl(file, arg);
++		break;
++
++	case AUFS_CTL_FHSM_FD:
++		dentry = file->f_path.dentry;
++		if (IS_ROOT(dentry))
++			err = au_fhsm_fd(dentry->d_sb, arg);
++		else
++			err = -ENOTTY;
++		break;
++
++	default:
++		/* do not call the lower */
++		AuDbg("0x%x\n", cmd);
++		err = -ENOTTY;
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	long err;
++
++	switch (cmd) {
++	case AUFS_CTL_MVDOWN:
++		err = au_mvdown(file->f_path.dentry, (void __user *)arg);
++		break;
++
++	case AUFS_CTL_WBR_FD:
++		err = au_wbr_fd(&file->f_path, (void __user *)arg);
++		break;
++
++	default:
++		/* do not call the lower */
++		AuDbg("0x%x\n", cmd);
++		err = -ENOTTY;
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++#ifdef CONFIG_COMPAT
++long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
++			   unsigned long arg)
++{
++	long err;
++
++	switch (cmd) {
++	case AUFS_CTL_RDU:
++	case AUFS_CTL_RDU_INO:
++		err = au_rdu_compat_ioctl(file, cmd, arg);
++		break;
++
++	case AUFS_CTL_IBUSY:
++		err = au_ibusy_compat_ioctl(file, arg);
++		break;
++
++	case AUFS_CTL_BRINFO:
++		err = au_brinfo_compat_ioctl(file, arg);
++		break;
++
++	default:
++		err = aufs_ioctl_dir(file, cmd, arg);
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
++			      unsigned long arg)
++{
++	return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg));
++}
++#endif
+diff -Nurp linux-5.4/fs/aufs/i_op_add.c linux-5.4-aufs/fs/aufs/i_op_add.c
+--- linux-5.4/fs/aufs/i_op_add.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/i_op_add.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,923 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode operations (add entry)
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++/*
++ * final procedure of adding a new entry, except link(2).
++ * remove whiteout, instantiate, copyup the parent dir's times and size
++ * and update version.
++ * if it failed, re-create the removed whiteout.
++ */
++static int epilog(struct inode *dir, aufs_bindex_t bindex,
++		  struct dentry *wh_dentry, struct dentry *dentry)
++{
++	int err, rerr;
++	aufs_bindex_t bwh;
++	struct path h_path;
++	struct super_block *sb;
++	struct inode *inode, *h_dir;
++	struct dentry *wh;
++
++	bwh = -1;
++	sb = dir->i_sb;
++	if (wh_dentry) {
++		h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
++		IMustLock(h_dir);
++		AuDebugOn(au_h_iptr(dir, bindex) != h_dir);
++		bwh = au_dbwh(dentry);
++		h_path.dentry = wh_dentry;
++		h_path.mnt = au_sbr_mnt(sb, bindex);
++		err = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path,
++					  dentry);
++		if (unlikely(err))
++			goto out;
++	}
++
++	inode = au_new_inode(dentry, /*must_new*/1);
++	if (!IS_ERR(inode)) {
++		d_instantiate(dentry, inode);
++		dir = d_inode(dentry->d_parent); /* dir inode is locked */
++		IMustLock(dir);
++		au_dir_ts(dir, bindex);
++		inode_inc_iversion(dir);
++		au_fhsm_wrote(sb, bindex, /*force*/0);
++		return 0; /* success */
++	}
++
++	err = PTR_ERR(inode);
++	if (!wh_dentry)
++		goto out;
++
++	/* revert */
++	/* dir inode is locked */
++	wh = au_wh_create(dentry, bwh, wh_dentry->d_parent);
++	rerr = PTR_ERR(wh);
++	if (IS_ERR(wh)) {
++		AuIOErr("%pd reverting whiteout failed(%d, %d)\n",
++			dentry, err, rerr);
++		err = -EIO;
++	} else
++		dput(wh);
++
++out:
++	return err;
++}
++
++static int au_d_may_add(struct dentry *dentry)
++{
++	int err;
++
++	err = 0;
++	if (unlikely(d_unhashed(dentry)))
++		err = -ENOENT;
++	if (unlikely(d_really_is_positive(dentry)))
++		err = -EEXIST;
++	return err;
++}
++
++/*
++ * simple tests for the adding inode operations.
++ * following the checks in vfs, plus the parent-child relationship.
++ */
++int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
++	       struct dentry *h_parent, int isdir)
++{
++	int err;
++	umode_t h_mode;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++
++	err = -ENAMETOOLONG;
++	if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
++		goto out;
++
++	h_dentry = au_h_dptr(dentry, bindex);
++	if (d_really_is_negative(dentry)) {
++		err = -EEXIST;
++		if (unlikely(d_is_positive(h_dentry)))
++			goto out;
++	} else {
++		/* rename(2) case */
++		err = -EIO;
++		if (unlikely(d_is_negative(h_dentry)))
++			goto out;
++		h_inode = d_inode(h_dentry);
++		if (unlikely(!h_inode->i_nlink))
++			goto out;
++
++		h_mode = h_inode->i_mode;
++		if (!isdir) {
++			err = -EISDIR;
++			if (unlikely(S_ISDIR(h_mode)))
++				goto out;
++		} else if (unlikely(!S_ISDIR(h_mode))) {
++			err = -ENOTDIR;
++			goto out;
++		}
++	}
++
++	err = 0;
++	/* expected parent dir is locked */
++	if (unlikely(h_parent != h_dentry->d_parent))
++		err = -EIO;
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * initial procedure of adding a new entry.
++ * prepare writable branch and the parent dir, lock it,
++ * and lookup whiteout for the new entry.
++ */
++static struct dentry*
++lock_hdir_lkup_wh(struct dentry *dentry, struct au_dtime *dt,
++		  struct dentry *src_dentry, struct au_pin *pin,
++		  struct au_wr_dir_args *wr_dir_args)
++{
++	struct dentry *wh_dentry, *h_parent;
++	struct super_block *sb;
++	struct au_branch *br;
++	int err;
++	unsigned int udba;
++	aufs_bindex_t bcpup;
++
++	AuDbg("%pd\n", dentry);
++
++	err = au_wr_dir(dentry, src_dentry, wr_dir_args);
++	bcpup = err;
++	wh_dentry = ERR_PTR(err);
++	if (unlikely(err < 0))
++		goto out;
++
++	sb = dentry->d_sb;
++	udba = au_opt_udba(sb);
++	err = au_pin(pin, dentry, bcpup, udba,
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	wh_dentry = ERR_PTR(err);
++	if (unlikely(err))
++		goto out;
++
++	h_parent = au_pinned_h_parent(pin);
++	if (udba != AuOpt_UDBA_NONE
++	    && au_dbtop(dentry) == bcpup)
++		err = au_may_add(dentry, bcpup, h_parent,
++				 au_ftest_wrdir(wr_dir_args->flags, ISDIR));
++	else if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
++		err = -ENAMETOOLONG;
++	wh_dentry = ERR_PTR(err);
++	if (unlikely(err))
++		goto out_unpin;
++
++	br = au_sbr(sb, bcpup);
++	if (dt) {
++		struct path tmp = {
++			.dentry	= h_parent,
++			.mnt	= au_br_mnt(br)
++		};
++		au_dtime_store(dt, au_pinned_parent(pin), &tmp);
++	}
++
++	wh_dentry = NULL;
++	if (bcpup != au_dbwh(dentry))
++		goto out; /* success */
++
++	/*
++	 * ENAMETOOLONG here means that if we allowed create such name, then it
++	 * would not be able to removed in the future. So we don't allow such
++	 * name here and we don't handle ENAMETOOLONG differently here.
++	 */
++	wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
++
++out_unpin:
++	if (IS_ERR(wh_dentry))
++		au_unpin(pin);
++out:
++	return wh_dentry;
++}
++
++/* ---------------------------------------------------------------------- */
++
++enum { Mknod, Symlink, Creat };
++struct simple_arg {
++	int type;
++	union {
++		struct {
++			umode_t			mode;
++			bool			want_excl;
++			bool			try_aopen;
++			struct vfsub_aopen_args	*aopen;
++		} c;
++		struct {
++			const char *symname;
++		} s;
++		struct {
++			umode_t mode;
++			dev_t dev;
++		} m;
++	} u;
++};
++
++static int add_simple(struct inode *dir, struct dentry *dentry,
++		      struct simple_arg *arg)
++{
++	int err, rerr;
++	aufs_bindex_t btop;
++	unsigned char created;
++	const unsigned char try_aopen
++		= (arg->type == Creat && arg->u.c.try_aopen);
++	struct vfsub_aopen_args *aopen = arg->u.c.aopen;
++	struct dentry *wh_dentry, *parent;
++	struct inode *h_dir;
++	struct super_block *sb;
++	struct au_branch *br;
++	/* to reduce stack size */
++	struct {
++		struct au_dtime dt;
++		struct au_pin pin;
++		struct path h_path;
++		struct au_wr_dir_args wr_dir_args;
++	} *a;
++
++	AuDbg("%pd\n", dentry);
++	IMustLock(dir);
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++	a->wr_dir_args.force_btgt = -1;
++	a->wr_dir_args.flags = AuWrDir_ADD_ENTRY;
++
++	parent = dentry->d_parent; /* dir inode is locked */
++	if (!try_aopen) {
++		err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
++		if (unlikely(err))
++			goto out_free;
++	}
++	err = au_d_may_add(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++	if (!try_aopen)
++		di_write_lock_parent(parent);
++	wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
++				      &a->pin, &a->wr_dir_args);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_parent;
++
++	btop = au_dbtop(dentry);
++	sb = dentry->d_sb;
++	br = au_sbr(sb, btop);
++	a->h_path.dentry = au_h_dptr(dentry, btop);
++	a->h_path.mnt = au_br_mnt(br);
++	h_dir = au_pinned_h_dir(&a->pin);
++	switch (arg->type) {
++	case Creat:
++		if (!try_aopen || !h_dir->i_op->atomic_open) {
++			err = vfsub_create(h_dir, &a->h_path, arg->u.c.mode,
++					   arg->u.c.want_excl);
++			created = !err;
++			if (!err && try_aopen)
++				aopen->file->f_mode |= FMODE_CREATED;
++		} else {
++			aopen->br = br;
++			err = vfsub_atomic_open(h_dir, a->h_path.dentry, aopen);
++			AuDbg("err %d\n", err);
++			AuDbgFile(aopen->file);
++			created = err >= 0
++				&& !!(aopen->file->f_mode & FMODE_CREATED);
++		}
++		break;
++	case Symlink:
++		err = vfsub_symlink(h_dir, &a->h_path, arg->u.s.symname);
++		created = !err;
++		break;
++	case Mknod:
++		err = vfsub_mknod(h_dir, &a->h_path, arg->u.m.mode,
++				  arg->u.m.dev);
++		created = !err;
++		break;
++	default:
++		BUG();
++	}
++	if (unlikely(err < 0))
++		goto out_unpin;
++
++	err = epilog(dir, btop, wh_dentry, dentry);
++	if (!err)
++		goto out_unpin; /* success */
++
++	/* revert */
++	if (created /* && d_is_positive(a->h_path.dentry) */) {
++		/* no delegation since it is just created */
++		rerr = vfsub_unlink(h_dir, &a->h_path, /*delegated*/NULL,
++				    /*force*/0);
++		if (rerr) {
++			AuIOErr("%pd revert failure(%d, %d)\n",
++				dentry, err, rerr);
++			err = -EIO;
++		}
++		au_dtime_revert(&a->dt);
++	}
++	if (try_aopen && h_dir->i_op->atomic_open
++	    && (aopen->file->f_mode & FMODE_OPENED))
++		/* aopen->file is still opened */
++		au_lcnt_dec(&aopen->br->br_nfiles);
++
++out_unpin:
++	au_unpin(&a->pin);
++	dput(wh_dentry);
++out_parent:
++	if (!try_aopen)
++		di_write_unlock(parent);
++out_unlock:
++	if (unlikely(err)) {
++		au_update_dbtop(dentry);
++		d_drop(dentry);
++	}
++	if (!try_aopen)
++		aufs_read_unlock(dentry, AuLock_DW);
++out_free:
++	au_kfree_rcu(a);
++out:
++	return err;
++}
++
++int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
++	       dev_t dev)
++{
++	struct simple_arg arg = {
++		.type = Mknod,
++		.u.m = {
++			.mode	= mode,
++			.dev	= dev
++		}
++	};
++	return add_simple(dir, dentry, &arg);
++}
++
++int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
++{
++	struct simple_arg arg = {
++		.type = Symlink,
++		.u.s.symname = symname
++	};
++	return add_simple(dir, dentry, &arg);
++}
++
++int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
++		bool want_excl)
++{
++	struct simple_arg arg = {
++		.type = Creat,
++		.u.c = {
++			.mode		= mode,
++			.want_excl	= want_excl
++		}
++	};
++	return add_simple(dir, dentry, &arg);
++}
++
++int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
++		       struct vfsub_aopen_args *aopen_args)
++{
++	struct simple_arg arg = {
++		.type = Creat,
++		.u.c = {
++			.mode		= aopen_args->create_mode,
++			.want_excl	= aopen_args->open_flag & O_EXCL,
++			.try_aopen	= true,
++			.aopen		= aopen_args
++		}
++	};
++	return add_simple(dir, dentry, &arg);
++}
++
++int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct super_block *sb;
++	struct dentry *parent, *h_parent, *h_dentry;
++	struct inode *h_dir, *inode;
++	struct vfsmount *h_mnt;
++	struct au_wr_dir_args wr_dir_args = {
++		.force_btgt	= -1,
++		.flags		= AuWrDir_TMPFILE
++	};
++
++	/* copy-up may happen */
++	inode_lock(dir);
++
++	sb = dir->i_sb;
++	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out;
++
++	err = au_di_init(dentry);
++	if (unlikely(err))
++		goto out_si;
++
++	err = -EBUSY;
++	parent = d_find_any_alias(dir);
++	AuDebugOn(!parent);
++	di_write_lock_parent(parent);
++	if (unlikely(d_inode(parent) != dir))
++		goto out_parent;
++
++	err = au_digen_test(parent, au_sigen(sb));
++	if (unlikely(err))
++		goto out_parent;
++
++	bindex = au_dbtop(parent);
++	au_set_dbtop(dentry, bindex);
++	au_set_dbbot(dentry, bindex);
++	err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
++	bindex = err;
++	if (unlikely(err < 0))
++		goto out_parent;
++
++	err = -EOPNOTSUPP;
++	h_dir = au_h_iptr(dir, bindex);
++	if (unlikely(!h_dir->i_op->tmpfile))
++		goto out_parent;
++
++	h_mnt = au_sbr_mnt(sb, bindex);
++	err = vfsub_mnt_want_write(h_mnt);
++	if (unlikely(err))
++		goto out_parent;
++
++	h_parent = au_h_dptr(parent, bindex);
++	h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0);
++	if (IS_ERR(h_dentry)) {
++		err = PTR_ERR(h_dentry);
++		goto out_mnt;
++	}
++
++	au_set_dbtop(dentry, bindex);
++	au_set_dbbot(dentry, bindex);
++	au_set_h_dptr(dentry, bindex, dget(h_dentry));
++	inode = au_new_inode(dentry, /*must_new*/1);
++	if (IS_ERR(inode)) {
++		err = PTR_ERR(inode);
++		au_set_h_dptr(dentry, bindex, NULL);
++		au_set_dbtop(dentry, -1);
++		au_set_dbbot(dentry, -1);
++	} else {
++		if (!inode->i_nlink)
++			set_nlink(inode, 1);
++		d_tmpfile(dentry, inode);
++		au_di(dentry)->di_tmpfile = 1;
++
++		/* update without i_mutex */
++		if (au_ibtop(dir) == au_dbtop(dentry))
++			au_cpup_attr_timesizes(dir);
++	}
++	dput(h_dentry);
++
++out_mnt:
++	vfsub_mnt_drop_write(h_mnt);
++out_parent:
++	di_write_unlock(parent);
++	dput(parent);
++	di_write_unlock(dentry);
++	if (unlikely(err)) {
++		au_di_fin(dentry);
++		dentry->d_fsdata = NULL;
++	}
++out_si:
++	si_read_unlock(sb);
++out:
++	inode_unlock(dir);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_link_args {
++	aufs_bindex_t bdst, bsrc;
++	struct au_pin pin;
++	struct path h_path;
++	struct dentry *src_parent, *parent;
++};
++
++static int au_cpup_before_link(struct dentry *src_dentry,
++			       struct au_link_args *a)
++{
++	int err;
++	struct dentry *h_src_dentry;
++	struct au_cp_generic cpg = {
++		.dentry	= src_dentry,
++		.bdst	= a->bdst,
++		.bsrc	= a->bsrc,
++		.len	= -1,
++		.pin	= &a->pin,
++		.flags	= AuCpup_DTIME | AuCpup_HOPEN /* | AuCpup_KEEPLINO */
++	};
++
++	di_read_lock_parent(a->src_parent, AuLock_IR);
++	err = au_test_and_cpup_dirs(src_dentry, a->bdst);
++	if (unlikely(err))
++		goto out;
++
++	h_src_dentry = au_h_dptr(src_dentry, a->bsrc);
++	err = au_pin(&a->pin, src_dentry, a->bdst,
++		     au_opt_udba(src_dentry->d_sb),
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	if (unlikely(err))
++		goto out;
++
++	err = au_sio_cpup_simple(&cpg);
++	au_unpin(&a->pin);
++
++out:
++	di_read_unlock(a->src_parent, AuLock_IR);
++	return err;
++}
++
++static int au_cpup_or_link(struct dentry *src_dentry, struct dentry *dentry,
++			   struct au_link_args *a)
++{
++	int err;
++	unsigned char plink;
++	aufs_bindex_t bbot;
++	struct dentry *h_src_dentry;
++	struct inode *h_inode, *inode, *delegated;
++	struct super_block *sb;
++	struct file *h_file;
++
++	plink = 0;
++	h_inode = NULL;
++	sb = src_dentry->d_sb;
++	inode = d_inode(src_dentry);
++	if (au_ibtop(inode) <= a->bdst)
++		h_inode = au_h_iptr(inode, a->bdst);
++	if (!h_inode || !h_inode->i_nlink) {
++		/* copyup src_dentry as the name of dentry. */
++		bbot = au_dbbot(dentry);
++		if (bbot < a->bsrc)
++			au_set_dbbot(dentry, a->bsrc);
++		au_set_h_dptr(dentry, a->bsrc,
++			      dget(au_h_dptr(src_dentry, a->bsrc)));
++		dget(a->h_path.dentry);
++		au_set_h_dptr(dentry, a->bdst, NULL);
++		AuDbg("temporary d_inode...\n");
++		spin_lock(&dentry->d_lock);
++		dentry->d_inode = d_inode(src_dentry); /* tmp */
++		spin_unlock(&dentry->d_lock);
++		h_file = au_h_open_pre(dentry, a->bsrc, /*force_wr*/0);
++		if (IS_ERR(h_file))
++			err = PTR_ERR(h_file);
++		else {
++			struct au_cp_generic cpg = {
++				.dentry	= dentry,
++				.bdst	= a->bdst,
++				.bsrc	= -1,
++				.len	= -1,
++				.pin	= &a->pin,
++				.flags	= AuCpup_KEEPLINO
++			};
++			err = au_sio_cpup_simple(&cpg);
++			au_h_open_post(dentry, a->bsrc, h_file);
++			if (!err) {
++				dput(a->h_path.dentry);
++				a->h_path.dentry = au_h_dptr(dentry, a->bdst);
++			} else
++				au_set_h_dptr(dentry, a->bdst,
++					      a->h_path.dentry);
++		}
++		spin_lock(&dentry->d_lock);
++		dentry->d_inode = NULL; /* restore */
++		spin_unlock(&dentry->d_lock);
++		AuDbg("temporary d_inode...done\n");
++		au_set_h_dptr(dentry, a->bsrc, NULL);
++		au_set_dbbot(dentry, bbot);
++	} else {
++		/* the inode of src_dentry already exists on a.bdst branch */
++		h_src_dentry = d_find_alias(h_inode);
++		if (!h_src_dentry && au_plink_test(inode)) {
++			plink = 1;
++			h_src_dentry = au_plink_lkup(inode, a->bdst);
++			err = PTR_ERR(h_src_dentry);
++			if (IS_ERR(h_src_dentry))
++				goto out;
++
++			if (unlikely(d_is_negative(h_src_dentry))) {
++				dput(h_src_dentry);
++				h_src_dentry = NULL;
++			}
++
++		}
++		if (h_src_dentry) {
++			delegated = NULL;
++			err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
++					 &a->h_path, &delegated);
++			if (unlikely(err == -EWOULDBLOCK)) {
++				pr_warn("cannot retry for NFSv4 delegation"
++					" for an internal link\n");
++				iput(delegated);
++			}
++			dput(h_src_dentry);
++		} else {
++			AuIOErr("no dentry found for hi%lu on b%d\n",
++				h_inode->i_ino, a->bdst);
++			err = -EIO;
++		}
++	}
++
++	if (!err && !plink)
++		au_plink_append(inode, a->bdst, a->h_path.dentry);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int aufs_link(struct dentry *src_dentry, struct inode *dir,
++	      struct dentry *dentry)
++{
++	int err, rerr;
++	struct au_dtime dt;
++	struct au_link_args *a;
++	struct dentry *wh_dentry, *h_src_dentry;
++	struct inode *inode, *delegated;
++	struct super_block *sb;
++	struct au_wr_dir_args wr_dir_args = {
++		/* .force_btgt	= -1, */
++		.flags		= AuWrDir_ADD_ENTRY
++	};
++
++	IMustLock(dir);
++	inode = d_inode(src_dentry);
++	IMustLock(inode);
++
++	err = -ENOMEM;
++	a = kzalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	a->parent = dentry->d_parent; /* dir inode is locked */
++	err = aufs_read_and_write_lock2(dentry, src_dentry,
++					AuLock_NOPLM | AuLock_GEN);
++	if (unlikely(err))
++		goto out_kfree;
++	err = au_d_linkable(src_dentry);
++	if (unlikely(err))
++		goto out_unlock;
++	err = au_d_may_add(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++
++	a->src_parent = dget_parent(src_dentry);
++	wr_dir_args.force_btgt = au_ibtop(inode);
++
++	di_write_lock_parent(a->parent);
++	wr_dir_args.force_btgt = au_wbr(dentry, wr_dir_args.force_btgt);
++	wh_dentry = lock_hdir_lkup_wh(dentry, &dt, src_dentry, &a->pin,
++				      &wr_dir_args);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_parent;
++
++	err = 0;
++	sb = dentry->d_sb;
++	a->bdst = au_dbtop(dentry);
++	a->h_path.dentry = au_h_dptr(dentry, a->bdst);
++	a->h_path.mnt = au_sbr_mnt(sb, a->bdst);
++	a->bsrc = au_ibtop(inode);
++	h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
++	if (!h_src_dentry && au_di(src_dentry)->di_tmpfile)
++		h_src_dentry = dget(au_hi_wh(inode, a->bsrc));
++	if (!h_src_dentry) {
++		a->bsrc = au_dbtop(src_dentry);
++		h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
++		AuDebugOn(!h_src_dentry);
++	} else if (IS_ERR(h_src_dentry)) {
++		err = PTR_ERR(h_src_dentry);
++		goto out_parent;
++	}
++
++	/*
++	 * aufs doesn't touch the credential so
++	 * security_dentry_create_files_as() is unnecessary.
++	 */
++	if (au_opt_test(au_mntflags(sb), PLINK)) {
++		if (a->bdst < a->bsrc
++		    /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */)
++			err = au_cpup_or_link(src_dentry, dentry, a);
++		else {
++			delegated = NULL;
++			err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
++					 &a->h_path, &delegated);
++			if (unlikely(err == -EWOULDBLOCK)) {
++				pr_warn("cannot retry for NFSv4 delegation"
++					" for an internal link\n");
++				iput(delegated);
++			}
++		}
++		dput(h_src_dentry);
++	} else {
++		/*
++		 * copyup src_dentry to the branch we process,
++		 * and then link(2) to it.
++		 */
++		dput(h_src_dentry);
++		if (a->bdst < a->bsrc
++		    /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) {
++			au_unpin(&a->pin);
++			di_write_unlock(a->parent);
++			err = au_cpup_before_link(src_dentry, a);
++			di_write_lock_parent(a->parent);
++			if (!err)
++				err = au_pin(&a->pin, dentry, a->bdst,
++					     au_opt_udba(sb),
++					     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++			if (unlikely(err))
++				goto out_wh;
++		}
++		if (!err) {
++			h_src_dentry = au_h_dptr(src_dentry, a->bdst);
++			err = -ENOENT;
++			if (h_src_dentry && d_is_positive(h_src_dentry)) {
++				delegated = NULL;
++				err = vfsub_link(h_src_dentry,
++						 au_pinned_h_dir(&a->pin),
++						 &a->h_path, &delegated);
++				if (unlikely(err == -EWOULDBLOCK)) {
++					pr_warn("cannot retry"
++						" for NFSv4 delegation"
++						" for an internal link\n");
++					iput(delegated);
++				}
++			}
++		}
++	}
++	if (unlikely(err))
++		goto out_unpin;
++
++	if (wh_dentry) {
++		a->h_path.dentry = wh_dentry;
++		err = au_wh_unlink_dentry(au_pinned_h_dir(&a->pin), &a->h_path,
++					  dentry);
++		if (unlikely(err))
++			goto out_revert;
++	}
++
++	au_dir_ts(dir, a->bdst);
++	inode_inc_iversion(dir);
++	inc_nlink(inode);
++	inode->i_ctime = dir->i_ctime;
++	d_instantiate(dentry, au_igrab(inode));
++	if (d_unhashed(a->h_path.dentry))
++		/* some filesystem calls d_drop() */
++		d_drop(dentry);
++	/* some filesystems consume an inode even hardlink */
++	au_fhsm_wrote(sb, a->bdst, /*force*/0);
++	goto out_unpin; /* success */
++
++out_revert:
++	/* no delegation since it is just created */
++	rerr = vfsub_unlink(au_pinned_h_dir(&a->pin), &a->h_path,
++			    /*delegated*/NULL, /*force*/0);
++	if (unlikely(rerr)) {
++		AuIOErr("%pd reverting failed(%d, %d)\n", dentry, err, rerr);
++		err = -EIO;
++	}
++	au_dtime_revert(&dt);
++out_unpin:
++	au_unpin(&a->pin);
++out_wh:
++	dput(wh_dentry);
++out_parent:
++	di_write_unlock(a->parent);
++	dput(a->src_parent);
++out_unlock:
++	if (unlikely(err)) {
++		au_update_dbtop(dentry);
++		d_drop(dentry);
++	}
++	aufs_read_and_write_unlock2(dentry, src_dentry);
++out_kfree:
++	au_kfree_rcu(a);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
++{
++	int err, rerr;
++	aufs_bindex_t bindex;
++	unsigned char diropq;
++	struct path h_path;
++	struct dentry *wh_dentry, *parent, *opq_dentry;
++	struct inode *h_inode;
++	struct super_block *sb;
++	struct {
++		struct au_pin pin;
++		struct au_dtime dt;
++	} *a; /* reduce the stack usage */
++	struct au_wr_dir_args wr_dir_args = {
++		.force_btgt	= -1,
++		.flags		= AuWrDir_ADD_ENTRY | AuWrDir_ISDIR
++	};
++
++	IMustLock(dir);
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
++	if (unlikely(err))
++		goto out_free;
++	err = au_d_may_add(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++
++	parent = dentry->d_parent; /* dir inode is locked */
++	di_write_lock_parent(parent);
++	wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
++				      &a->pin, &wr_dir_args);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_parent;
++
++	sb = dentry->d_sb;
++	bindex = au_dbtop(dentry);
++	h_path.dentry = au_h_dptr(dentry, bindex);
++	h_path.mnt = au_sbr_mnt(sb, bindex);
++	err = vfsub_mkdir(au_pinned_h_dir(&a->pin), &h_path, mode);
++	if (unlikely(err))
++		goto out_unpin;
++
++	/* make the dir opaque */
++	diropq = 0;
++	h_inode = d_inode(h_path.dentry);
++	if (wh_dentry
++	    || au_opt_test(au_mntflags(sb), ALWAYS_DIROPQ)) {
++		inode_lock_nested(h_inode, AuLsc_I_CHILD);
++		opq_dentry = au_diropq_create(dentry, bindex);
++		inode_unlock(h_inode);
++		err = PTR_ERR(opq_dentry);
++		if (IS_ERR(opq_dentry))
++			goto out_dir;
++		dput(opq_dentry);
++		diropq = 1;
++	}
++
++	err = epilog(dir, bindex, wh_dentry, dentry);
++	if (!err) {
++		inc_nlink(dir);
++		goto out_unpin; /* success */
++	}
++
++	/* revert */
++	if (diropq) {
++		AuLabel(revert opq);
++		inode_lock_nested(h_inode, AuLsc_I_CHILD);
++		rerr = au_diropq_remove(dentry, bindex);
++		inode_unlock(h_inode);
++		if (rerr) {
++			AuIOErr("%pd reverting diropq failed(%d, %d)\n",
++				dentry, err, rerr);
++			err = -EIO;
++		}
++	}
++
++out_dir:
++	AuLabel(revert dir);
++	rerr = vfsub_rmdir(au_pinned_h_dir(&a->pin), &h_path);
++	if (rerr) {
++		AuIOErr("%pd reverting dir failed(%d, %d)\n",
++			dentry, err, rerr);
++		err = -EIO;
++	}
++	au_dtime_revert(&a->dt);
++out_unpin:
++	au_unpin(&a->pin);
++	dput(wh_dentry);
++out_parent:
++	di_write_unlock(parent);
++out_unlock:
++	if (unlikely(err)) {
++		au_update_dbtop(dentry);
++		d_drop(dentry);
++	}
++	aufs_read_unlock(dentry, AuLock_DW);
++out_free:
++	au_kfree_rcu(a);
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/i_op.c linux-5.4-aufs/fs/aufs/i_op.c
+--- linux-5.4/fs/aufs/i_op.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/i_op.c	2019-11-28 01:25:59.065925618 +0200
+@@ -0,0 +1,1492 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode operations (except add/del/rename)
++ */
++
++#include <linux/device_cgroup.h>
++#include <linux/fs_stack.h>
++#include <linux/iversion.h>
++#include <linux/namei.h>
++#include <linux/security.h>
++#include "aufs.h"
++
++static int h_permission(struct inode *h_inode, int mask,
++			struct path *h_path, int brperm)
++{
++	int err;
++	const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
++
++	err = -EPERM;
++	if (write_mask && IS_IMMUTABLE(h_inode))
++		goto out;
++
++	err = -EACCES;
++	if (((mask & MAY_EXEC)
++	     && S_ISREG(h_inode->i_mode)
++	     && (path_noexec(h_path)
++		 || !(h_inode->i_mode & 0111))))
++		goto out;
++
++	/*
++	 * - skip the lower fs test in the case of write to ro branch.
++	 * - nfs dir permission write check is optimized, but a policy for
++	 *   link/rename requires a real check.
++	 * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.'
++	 *   in this case, generic_permission() returns -EOPNOTSUPP.
++	 */
++	if ((write_mask && !au_br_writable(brperm))
++	    || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode)
++		&& write_mask && !(mask & MAY_READ))
++	    || !h_inode->i_op->permission) {
++		/* AuLabel(generic_permission); */
++		/* AuDbg("get_acl %ps\n", h_inode->i_op->get_acl); */
++		err = generic_permission(h_inode, mask);
++		if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode))
++			err = h_inode->i_op->permission(h_inode, mask);
++		AuTraceErr(err);
++	} else {
++		/* AuLabel(h_inode->permission); */
++		err = h_inode->i_op->permission(h_inode, mask);
++		AuTraceErr(err);
++	}
++
++	if (!err)
++		err = devcgroup_inode_permission(h_inode, mask);
++	if (!err)
++		err = security_inode_permission(h_inode, mask);
++
++#if 0
++	if (!err) {
++		/* todo: do we need to call ima_path_check()? */
++		struct path h_path = {
++			.dentry	=
++			.mnt	= h_mnt
++		};
++		err = ima_path_check(&h_path,
++				     mask & (MAY_READ | MAY_WRITE | MAY_EXEC),
++				     IMA_COUNT_LEAVE);
++	}
++#endif
++
++out:
++	return err;
++}
++
++static int aufs_permission(struct inode *inode, int mask)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	const unsigned char isdir = !!S_ISDIR(inode->i_mode),
++		write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
++	struct inode *h_inode;
++	struct super_block *sb;
++	struct au_branch *br;
++
++	/* todo: support rcu-walk? */
++	if (mask & MAY_NOT_BLOCK)
++		return -ECHILD;
++
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	ii_read_lock_child(inode);
++#if 0
++	err = au_iigen_test(inode, au_sigen(sb));
++	if (unlikely(err))
++		goto out;
++#endif
++
++	if (!isdir
++	    || write_mask
++	    || au_opt_test(au_mntflags(sb), DIRPERM1)) {
++		err = au_busy_or_stale();
++		h_inode = au_h_iptr(inode, au_ibtop(inode));
++		if (unlikely(!h_inode
++			     || (h_inode->i_mode & S_IFMT)
++			     != (inode->i_mode & S_IFMT)))
++			goto out;
++
++		err = 0;
++		bindex = au_ibtop(inode);
++		br = au_sbr(sb, bindex);
++		err = h_permission(h_inode, mask, &br->br_path, br->br_perm);
++		if (write_mask
++		    && !err
++		    && !special_file(h_inode->i_mode)) {
++			/* test whether the upper writable branch exists */
++			err = -EROFS;
++			for (; bindex >= 0; bindex--)
++				if (!au_br_rdonly(au_sbr(sb, bindex))) {
++					err = 0;
++					break;
++				}
++		}
++		goto out;
++	}
++
++	/* non-write to dir */
++	err = 0;
++	bbot = au_ibbot(inode);
++	for (bindex = au_ibtop(inode); !err && bindex <= bbot; bindex++) {
++		h_inode = au_h_iptr(inode, bindex);
++		if (h_inode) {
++			err = au_busy_or_stale();
++			if (unlikely(!S_ISDIR(h_inode->i_mode)))
++				break;
++
++			br = au_sbr(sb, bindex);
++			err = h_permission(h_inode, mask, &br->br_path,
++					   br->br_perm);
++		}
++	}
++
++out:
++	ii_read_unlock(inode);
++	si_read_unlock(sb);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct dentry *aufs_lookup(struct inode *dir, struct dentry *dentry,
++				  unsigned int flags)
++{
++	struct dentry *ret, *parent;
++	struct inode *inode;
++	struct super_block *sb;
++	int err, npositive;
++
++	IMustLock(dir);
++
++	/* todo: support rcu-walk? */
++	ret = ERR_PTR(-ECHILD);
++	if (flags & LOOKUP_RCU)
++		goto out;
++
++	ret = ERR_PTR(-ENAMETOOLONG);
++	if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
++		goto out;
++
++	sb = dir->i_sb;
++	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	ret = ERR_PTR(err);
++	if (unlikely(err))
++		goto out;
++
++	err = au_di_init(dentry);
++	ret = ERR_PTR(err);
++	if (unlikely(err))
++		goto out_si;
++
++	inode = NULL;
++	npositive = 0; /* suppress a warning */
++	parent = dentry->d_parent; /* dir inode is locked */
++	di_read_lock_parent(parent, AuLock_IR);
++	err = au_alive_dir(parent);
++	if (!err)
++		err = au_digen_test(parent, au_sigen(sb));
++	if (!err) {
++		/* regardless LOOKUP_CREATE, always ALLOW_NEG */
++		npositive = au_lkup_dentry(dentry, au_dbtop(parent),
++					   AuLkup_ALLOW_NEG);
++		err = npositive;
++	}
++	di_read_unlock(parent, AuLock_IR);
++	ret = ERR_PTR(err);
++	if (unlikely(err < 0))
++		goto out_unlock;
++
++	if (npositive) {
++		inode = au_new_inode(dentry, /*must_new*/0);
++		if (IS_ERR(inode)) {
++			ret = (void *)inode;
++			inode = NULL;
++			goto out_unlock;
++		}
++	}
++
++	if (inode)
++		atomic_inc(&inode->i_count);
++	ret = d_splice_alias(inode, dentry);
++#if 0
++	if (unlikely(d_need_lookup(dentry))) {
++		spin_lock(&dentry->d_lock);
++		dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
++		spin_unlock(&dentry->d_lock);
++	} else
++#endif
++	if (inode) {
++		if (!IS_ERR(ret)) {
++			iput(inode);
++			if (ret && ret != dentry)
++				ii_write_unlock(inode);
++		} else {
++			ii_write_unlock(inode);
++			iput(inode);
++			inode = NULL;
++		}
++	}
++
++out_unlock:
++	di_write_unlock(dentry);
++out_si:
++	si_read_unlock(sb);
++out:
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * very dirty and complicated aufs ->atomic_open().
++ * aufs_atomic_open()
++ * + au_aopen_or_create()
++ *   + add_simple()
++ *     + vfsub_atomic_open()
++ *       + branch fs ->atomic_open()
++ *	   may call the actual 'open' for h_file
++ *       + inc br_nfiles only if opened
++ * + au_aopen_no_open() or au_aopen_do_open()
++ *
++ * au_aopen_do_open()
++ * + finish_open()
++ *   + au_do_aopen()
++ *     + au_do_open() the body of all 'open'
++ *       + au_do_open_nondir()
++ *	   set the passed h_file
++ *
++ * au_aopen_no_open()
++ * + finish_no_open()
++ */
++
++struct aopen_node {
++	struct hlist_bl_node hblist;
++	struct file *file, *h_file;
++};
++
++static int au_do_aopen(struct inode *inode, struct file *file)
++{
++	struct hlist_bl_head *aopen;
++	struct hlist_bl_node *pos;
++	struct aopen_node *node;
++	struct au_do_open_args args = {
++		.aopen	= 1,
++		.open	= au_do_open_nondir
++	};
++
++	aopen = &au_sbi(inode->i_sb)->si_aopen;
++	hlist_bl_lock(aopen);
++	hlist_bl_for_each_entry(node, pos, aopen, hblist)
++		if (node->file == file) {
++			args.h_file = node->h_file;
++			break;
++		}
++	hlist_bl_unlock(aopen);
++	/* AuDebugOn(!args.h_file); */
++
++	return au_do_open(file, &args);
++}
++
++static int au_aopen_do_open(struct file *file, struct dentry *dentry,
++			    struct aopen_node *aopen_node)
++{
++	int err;
++	struct hlist_bl_head *aopen;
++
++	AuLabel(here);
++	aopen = &au_sbi(dentry->d_sb)->si_aopen;
++	au_hbl_add(&aopen_node->hblist, aopen);
++	err = finish_open(file, dentry, au_do_aopen);
++	au_hbl_del(&aopen_node->hblist, aopen);
++	/* AuDbgFile(file); */
++	AuDbg("%pd%s%s\n", dentry,
++	      (file->f_mode & FMODE_CREATED) ? " created" : "",
++	      (file->f_mode & FMODE_OPENED) ? " opened" : "");
++
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_aopen_no_open(struct file *file, struct dentry *dentry)
++{
++	int err;
++
++	AuLabel(here);
++	dget(dentry);
++	err = finish_no_open(file, dentry);
++
++	AuTraceErr(err);
++	return err;
++}
++
++static int aufs_atomic_open(struct inode *dir, struct dentry *dentry,
++			    struct file *file, unsigned int open_flag,
++			    umode_t create_mode)
++{
++	int err, did_open;
++	unsigned int lkup_flags;
++	aufs_bindex_t bindex;
++	struct super_block *sb;
++	struct dentry *parent, *d;
++	struct vfsub_aopen_args args = {
++		.open_flag	= open_flag,
++		.create_mode	= create_mode
++	};
++	struct aopen_node aopen_node = {
++		.file	= file
++	};
++
++	IMustLock(dir);
++	AuDbg("open_flag 0%o\n", open_flag);
++	AuDbgDentry(dentry);
++
++	err = 0;
++	if (!au_di(dentry)) {
++		lkup_flags = LOOKUP_OPEN;
++		if (open_flag & O_CREAT)
++			lkup_flags |= LOOKUP_CREATE;
++		d = aufs_lookup(dir, dentry, lkup_flags);
++		if (IS_ERR(d)) {
++			err = PTR_ERR(d);
++			AuTraceErr(err);
++			goto out;
++		} else if (d) {
++			/*
++			 * obsoleted dentry found.
++			 * another error will be returned later.
++			 */
++			d_drop(d);
++			AuDbgDentry(d);
++			dput(d);
++		}
++		AuDbgDentry(dentry);
++	}
++
++	if (d_is_positive(dentry)
++	    || d_unhashed(dentry)
++	    || d_unlinked(dentry)
++	    || !(open_flag & O_CREAT)) {
++		err = au_aopen_no_open(file, dentry);
++		goto out; /* success */
++	}
++
++	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
++	if (unlikely(err))
++		goto out;
++
++	sb = dentry->d_sb;
++	parent = dentry->d_parent;	/* dir is locked */
++	di_write_lock_parent(parent);
++	err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
++	if (unlikely(err < 0))
++		goto out_parent;
++
++	AuDbgDentry(dentry);
++	if (d_is_positive(dentry)) {
++		err = au_aopen_no_open(file, dentry);
++		goto out_parent; /* success */
++	}
++
++	args.file = alloc_empty_file(file->f_flags, current_cred());
++	err = PTR_ERR(args.file);
++	if (IS_ERR(args.file))
++		goto out_parent;
++
++	bindex = au_dbtop(dentry);
++	err = au_aopen_or_create(dir, dentry, &args);
++	AuTraceErr(err);
++	AuDbgFile(args.file);
++	file->f_mode = args.file->f_mode & ~FMODE_OPENED;
++	did_open = !!(args.file->f_mode & FMODE_OPENED);
++	if (!did_open) {
++		fput(args.file);
++		args.file = NULL;
++	}
++	di_write_unlock(parent);
++	di_write_unlock(dentry);
++	if (unlikely(err < 0)) {
++		if (args.file)
++			fput(args.file);
++		goto out_sb;
++	}
++
++	if (!did_open)
++		err = au_aopen_no_open(file, dentry);
++	else {
++		aopen_node.h_file = args.file;
++		err = au_aopen_do_open(file, dentry, &aopen_node);
++	}
++	if (unlikely(err < 0)) {
++		if (args.file)
++			fput(args.file);
++		if (did_open)
++			au_lcnt_dec(&args.br->br_nfiles);
++	}
++	goto out_sb; /* success */
++
++out_parent:
++	di_write_unlock(parent);
++	di_write_unlock(dentry);
++out_sb:
++	si_read_unlock(sb);
++out:
++	AuTraceErr(err);
++	AuDbgFile(file);
++	return err;
++}
++
++
++/* ---------------------------------------------------------------------- */
++
++static int au_wr_dir_cpup(struct dentry *dentry, struct dentry *parent,
++			  const unsigned char add_entry, aufs_bindex_t bcpup,
++			  aufs_bindex_t btop)
++{
++	int err;
++	struct dentry *h_parent;
++	struct inode *h_dir;
++
++	if (add_entry)
++		IMustLock(d_inode(parent));
++	else
++		di_write_lock_parent(parent);
++
++	err = 0;
++	if (!au_h_dptr(parent, bcpup)) {
++		if (btop > bcpup)
++			err = au_cpup_dirs(dentry, bcpup);
++		else if (btop < bcpup)
++			err = au_cpdown_dirs(dentry, bcpup);
++		else
++			BUG();
++	}
++	if (!err && add_entry && !au_ftest_wrdir(add_entry, TMPFILE)) {
++		h_parent = au_h_dptr(parent, bcpup);
++		h_dir = d_inode(h_parent);
++		inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
++		err = au_lkup_neg(dentry, bcpup, /*wh*/0);
++		/* todo: no unlock here */
++		inode_unlock_shared(h_dir);
++
++		AuDbg("bcpup %d\n", bcpup);
++		if (!err) {
++			if (d_really_is_negative(dentry))
++				au_set_h_dptr(dentry, btop, NULL);
++			au_update_dbrange(dentry, /*do_put_zero*/0);
++		}
++	}
++
++	if (!add_entry)
++		di_write_unlock(parent);
++	if (!err)
++		err = bcpup; /* success */
++
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * decide the branch and the parent dir where we will create a new entry.
++ * returns new bindex or an error.
++ * copyup the parent dir if needed.
++ */
++int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
++	      struct au_wr_dir_args *args)
++{
++	int err;
++	unsigned int flags;
++	aufs_bindex_t bcpup, btop, src_btop;
++	const unsigned char add_entry
++		= au_ftest_wrdir(args->flags, ADD_ENTRY)
++		| au_ftest_wrdir(args->flags, TMPFILE);
++	struct super_block *sb;
++	struct dentry *parent;
++	struct au_sbinfo *sbinfo;
++
++	sb = dentry->d_sb;
++	sbinfo = au_sbi(sb);
++	parent = dget_parent(dentry);
++	btop = au_dbtop(dentry);
++	bcpup = btop;
++	if (args->force_btgt < 0) {
++		if (src_dentry) {
++			src_btop = au_dbtop(src_dentry);
++			if (src_btop < btop)
++				bcpup = src_btop;
++		} else if (add_entry) {
++			flags = 0;
++			if (au_ftest_wrdir(args->flags, ISDIR))
++				au_fset_wbr(flags, DIR);
++			err = AuWbrCreate(sbinfo, dentry, flags);
++			bcpup = err;
++		}
++
++		if (bcpup < 0 || au_test_ro(sb, bcpup, d_inode(dentry))) {
++			if (add_entry)
++				err = AuWbrCopyup(sbinfo, dentry);
++			else {
++				if (!IS_ROOT(dentry)) {
++					di_read_lock_parent(parent, !AuLock_IR);
++					err = AuWbrCopyup(sbinfo, dentry);
++					di_read_unlock(parent, !AuLock_IR);
++				} else
++					err = AuWbrCopyup(sbinfo, dentry);
++			}
++			bcpup = err;
++			if (unlikely(err < 0))
++				goto out;
++		}
++	} else {
++		bcpup = args->force_btgt;
++		AuDebugOn(au_test_ro(sb, bcpup, d_inode(dentry)));
++	}
++
++	AuDbg("btop %d, bcpup %d\n", btop, bcpup);
++	err = bcpup;
++	if (bcpup == btop)
++		goto out; /* success */
++
++	/* copyup the new parent into the branch we process */
++	err = au_wr_dir_cpup(dentry, parent, add_entry, bcpup, btop);
++	if (err >= 0) {
++		if (d_really_is_negative(dentry)) {
++			au_set_h_dptr(dentry, btop, NULL);
++			au_set_dbtop(dentry, bcpup);
++			au_set_dbbot(dentry, bcpup);
++		}
++		AuDebugOn(add_entry
++			  && !au_ftest_wrdir(args->flags, TMPFILE)
++			  && !au_h_dptr(dentry, bcpup));
++	}
++
++out:
++	dput(parent);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_pin_hdir_unlock(struct au_pin *p)
++{
++	if (p->hdir)
++		au_hn_inode_unlock(p->hdir);
++}
++
++int au_pin_hdir_lock(struct au_pin *p)
++{
++	int err;
++
++	err = 0;
++	if (!p->hdir)
++		goto out;
++
++	/* even if an error happens later, keep this lock */
++	au_hn_inode_lock_nested(p->hdir, p->lsc_hi);
++
++	err = -EBUSY;
++	if (unlikely(p->hdir->hi_inode != d_inode(p->h_parent)))
++		goto out;
++
++	err = 0;
++	if (p->h_dentry)
++		err = au_h_verify(p->h_dentry, p->udba, p->hdir->hi_inode,
++				  p->h_parent, p->br);
++
++out:
++	return err;
++}
++
++int au_pin_hdir_relock(struct au_pin *p)
++{
++	int err, i;
++	struct inode *h_i;
++	struct dentry *h_d[] = {
++		p->h_dentry,
++		p->h_parent
++	};
++
++	err = au_pin_hdir_lock(p);
++	if (unlikely(err))
++		goto out;
++
++	for (i = 0; !err && i < sizeof(h_d)/sizeof(*h_d); i++) {
++		if (!h_d[i])
++			continue;
++		if (d_is_positive(h_d[i])) {
++			h_i = d_inode(h_d[i]);
++			err = !h_i->i_nlink;
++		}
++	}
++
++out:
++	return err;
++}
++
++static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task)
++{
++	atomic_long_set(&p->hdir->hi_inode->i_rwsem.owner, (long)task);
++}
++
++void au_pin_hdir_acquire_nest(struct au_pin *p)
++{
++	if (p->hdir) {
++		rwsem_acquire_nest(&p->hdir->hi_inode->i_rwsem.dep_map,
++				   p->lsc_hi, 0, NULL, _RET_IP_);
++		au_pin_hdir_set_owner(p, current);
++	}
++}
++
++void au_pin_hdir_release(struct au_pin *p)
++{
++	if (p->hdir) {
++		au_pin_hdir_set_owner(p, p->task);
++		rwsem_release(&p->hdir->hi_inode->i_rwsem.dep_map, 1, _RET_IP_);
++	}
++}
++
++struct dentry *au_pinned_h_parent(struct au_pin *pin)
++{
++	if (pin && pin->parent)
++		return au_h_dptr(pin->parent, pin->bindex);
++	return NULL;
++}
++
++void au_unpin(struct au_pin *p)
++{
++	if (p->hdir)
++		au_pin_hdir_unlock(p);
++	if (p->h_mnt && au_ftest_pin(p->flags, MNT_WRITE))
++		vfsub_mnt_drop_write(p->h_mnt);
++	if (!p->hdir)
++		return;
++
++	if (!au_ftest_pin(p->flags, DI_LOCKED))
++		di_read_unlock(p->parent, AuLock_IR);
++	iput(p->hdir->hi_inode);
++	dput(p->parent);
++	p->parent = NULL;
++	p->hdir = NULL;
++	p->h_mnt = NULL;
++	/* do not clear p->task */
++}
++
++int au_do_pin(struct au_pin *p)
++{
++	int err;
++	struct super_block *sb;
++	struct inode *h_dir;
++
++	err = 0;
++	sb = p->dentry->d_sb;
++	p->br = au_sbr(sb, p->bindex);
++	if (IS_ROOT(p->dentry)) {
++		if (au_ftest_pin(p->flags, MNT_WRITE)) {
++			p->h_mnt = au_br_mnt(p->br);
++			err = vfsub_mnt_want_write(p->h_mnt);
++			if (unlikely(err)) {
++				au_fclr_pin(p->flags, MNT_WRITE);
++				goto out_err;
++			}
++		}
++		goto out;
++	}
++
++	p->h_dentry = NULL;
++	if (p->bindex <= au_dbbot(p->dentry))
++		p->h_dentry = au_h_dptr(p->dentry, p->bindex);
++
++	p->parent = dget_parent(p->dentry);
++	if (!au_ftest_pin(p->flags, DI_LOCKED))
++		di_read_lock(p->parent, AuLock_IR, p->lsc_di);
++
++	h_dir = NULL;
++	p->h_parent = au_h_dptr(p->parent, p->bindex);
++	p->hdir = au_hi(d_inode(p->parent), p->bindex);
++	if (p->hdir)
++		h_dir = p->hdir->hi_inode;
++
++	/*
++	 * udba case, or
++	 * if DI_LOCKED is not set, then p->parent may be different
++	 * and h_parent can be NULL.
++	 */
++	if (unlikely(!p->hdir || !h_dir || !p->h_parent)) {
++		err = -EBUSY;
++		if (!au_ftest_pin(p->flags, DI_LOCKED))
++			di_read_unlock(p->parent, AuLock_IR);
++		dput(p->parent);
++		p->parent = NULL;
++		goto out_err;
++	}
++
++	if (au_ftest_pin(p->flags, MNT_WRITE)) {
++		p->h_mnt = au_br_mnt(p->br);
++		err = vfsub_mnt_want_write(p->h_mnt);
++		if (unlikely(err)) {
++			au_fclr_pin(p->flags, MNT_WRITE);
++			if (!au_ftest_pin(p->flags, DI_LOCKED))
++				di_read_unlock(p->parent, AuLock_IR);
++			dput(p->parent);
++			p->parent = NULL;
++			goto out_err;
++		}
++	}
++
++	au_igrab(h_dir);
++	err = au_pin_hdir_lock(p);
++	if (!err)
++		goto out; /* success */
++
++	au_unpin(p);
++
++out_err:
++	pr_err("err %d\n", err);
++	err = au_busy_or_stale();
++out:
++	return err;
++}
++
++void au_pin_init(struct au_pin *p, struct dentry *dentry,
++		 aufs_bindex_t bindex, int lsc_di, int lsc_hi,
++		 unsigned int udba, unsigned char flags)
++{
++	p->dentry = dentry;
++	p->udba = udba;
++	p->lsc_di = lsc_di;
++	p->lsc_hi = lsc_hi;
++	p->flags = flags;
++	p->bindex = bindex;
++
++	p->parent = NULL;
++	p->hdir = NULL;
++	p->h_mnt = NULL;
++
++	p->h_dentry = NULL;
++	p->h_parent = NULL;
++	p->br = NULL;
++	p->task = current;
++}
++
++int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
++	   unsigned int udba, unsigned char flags)
++{
++	au_pin_init(pin, dentry, bindex, AuLsc_DI_PARENT, AuLsc_I_PARENT2,
++		    udba, flags);
++	return au_do_pin(pin);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * ->setattr() and ->getattr() are called in various cases.
++ * chmod, stat: dentry is revalidated.
++ * fchmod, fstat: file and dentry are not revalidated, additionally they may be
++ *		  unhashed.
++ * for ->setattr(), ia->ia_file is passed from ftruncate only.
++ */
++/* todo: consolidate with do_refresh() and simple_reval_dpath() */
++int au_reval_for_attr(struct dentry *dentry, unsigned int sigen)
++{
++	int err;
++	struct dentry *parent;
++
++	err = 0;
++	if (au_digen_test(dentry, sigen)) {
++		parent = dget_parent(dentry);
++		di_read_lock_parent(parent, AuLock_IR);
++		err = au_refresh_dentry(dentry, parent);
++		di_read_unlock(parent, AuLock_IR);
++		dput(parent);
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
++		     struct au_icpup_args *a)
++{
++	int err;
++	loff_t sz;
++	aufs_bindex_t btop, ibtop;
++	struct dentry *hi_wh, *parent;
++	struct inode *inode;
++	struct au_wr_dir_args wr_dir_args = {
++		.force_btgt	= -1,
++		.flags		= 0
++	};
++
++	if (d_is_dir(dentry))
++		au_fset_wrdir(wr_dir_args.flags, ISDIR);
++	/* plink or hi_wh() case */
++	btop = au_dbtop(dentry);
++	inode = d_inode(dentry);
++	ibtop = au_ibtop(inode);
++	if (btop != ibtop && !au_test_ro(inode->i_sb, ibtop, inode))
++		wr_dir_args.force_btgt = ibtop;
++	err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
++	if (unlikely(err < 0))
++		goto out;
++	a->btgt = err;
++	if (err != btop)
++		au_fset_icpup(a->flags, DID_CPUP);
++
++	err = 0;
++	a->pin_flags = AuPin_MNT_WRITE;
++	parent = NULL;
++	if (!IS_ROOT(dentry)) {
++		au_fset_pin(a->pin_flags, DI_LOCKED);
++		parent = dget_parent(dentry);
++		di_write_lock_parent(parent);
++	}
++
++	err = au_pin(&a->pin, dentry, a->btgt, a->udba, a->pin_flags);
++	if (unlikely(err))
++		goto out_parent;
++
++	sz = -1;
++	a->h_path.dentry = au_h_dptr(dentry, btop);
++	a->h_inode = d_inode(a->h_path.dentry);
++	if (ia && (ia->ia_valid & ATTR_SIZE)) {
++		inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
++		if (ia->ia_size < i_size_read(a->h_inode))
++			sz = ia->ia_size;
++		inode_unlock_shared(a->h_inode);
++	}
++
++	hi_wh = NULL;
++	if (au_ftest_icpup(a->flags, DID_CPUP) && d_unlinked(dentry)) {
++		hi_wh = au_hi_wh(inode, a->btgt);
++		if (!hi_wh) {
++			struct au_cp_generic cpg = {
++				.dentry	= dentry,
++				.bdst	= a->btgt,
++				.bsrc	= -1,
++				.len	= sz,
++				.pin	= &a->pin
++			};
++			err = au_sio_cpup_wh(&cpg, /*file*/NULL);
++			if (unlikely(err))
++				goto out_unlock;
++			hi_wh = au_hi_wh(inode, a->btgt);
++			/* todo: revalidate hi_wh? */
++		}
++	}
++
++	if (parent) {
++		au_pin_set_parent_lflag(&a->pin, /*lflag*/0);
++		di_downgrade_lock(parent, AuLock_IR);
++		dput(parent);
++		parent = NULL;
++	}
++	if (!au_ftest_icpup(a->flags, DID_CPUP))
++		goto out; /* success */
++
++	if (!d_unhashed(dentry)) {
++		struct au_cp_generic cpg = {
++			.dentry	= dentry,
++			.bdst	= a->btgt,
++			.bsrc	= btop,
++			.len	= sz,
++			.pin	= &a->pin,
++			.flags	= AuCpup_DTIME | AuCpup_HOPEN
++		};
++		err = au_sio_cpup_simple(&cpg);
++		if (!err)
++			a->h_path.dentry = au_h_dptr(dentry, a->btgt);
++	} else if (!hi_wh)
++		a->h_path.dentry = au_h_dptr(dentry, a->btgt);
++	else
++		a->h_path.dentry = hi_wh; /* do not dget here */
++
++out_unlock:
++	a->h_inode = d_inode(a->h_path.dentry);
++	if (!err)
++		goto out; /* success */
++	au_unpin(&a->pin);
++out_parent:
++	if (parent) {
++		di_write_unlock(parent);
++		dput(parent);
++	}
++out:
++	if (!err)
++		inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
++	return err;
++}
++
++static int aufs_setattr(struct dentry *dentry, struct iattr *ia)
++{
++	int err;
++	struct inode *inode, *delegated;
++	struct super_block *sb;
++	struct file *file;
++	struct au_icpup_args *a;
++
++	inode = d_inode(dentry);
++	IMustLock(inode);
++
++	err = setattr_prepare(dentry, ia);
++	if (unlikely(err))
++		goto out;
++
++	err = -ENOMEM;
++	a = kzalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
++		ia->ia_valid &= ~ATTR_MODE;
++
++	file = NULL;
++	sb = dentry->d_sb;
++	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out_kfree;
++
++	if (ia->ia_valid & ATTR_FILE) {
++		/* currently ftruncate(2) only */
++		AuDebugOn(!d_is_reg(dentry));
++		file = ia->ia_file;
++		err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1,
++					    /*fi_lsc*/0);
++		if (unlikely(err))
++			goto out_si;
++		ia->ia_file = au_hf_top(file);
++		a->udba = AuOpt_UDBA_NONE;
++	} else {
++		/* fchmod() doesn't pass ia_file */
++		a->udba = au_opt_udba(sb);
++		di_write_lock_child(dentry);
++		/* no d_unlinked(), to set UDBA_NONE for root */
++		if (d_unhashed(dentry))
++			a->udba = AuOpt_UDBA_NONE;
++		if (a->udba != AuOpt_UDBA_NONE) {
++			AuDebugOn(IS_ROOT(dentry));
++			err = au_reval_for_attr(dentry, au_sigen(sb));
++			if (unlikely(err))
++				goto out_dentry;
++		}
++	}
++
++	err = au_pin_and_icpup(dentry, ia, a);
++	if (unlikely(err < 0))
++		goto out_dentry;
++	if (au_ftest_icpup(a->flags, DID_CPUP)) {
++		ia->ia_file = NULL;
++		ia->ia_valid &= ~ATTR_FILE;
++	}
++
++	a->h_path.mnt = au_sbr_mnt(sb, a->btgt);
++	if ((ia->ia_valid & (ATTR_MODE | ATTR_CTIME))
++	    == (ATTR_MODE | ATTR_CTIME)) {
++		err = security_path_chmod(&a->h_path, ia->ia_mode);
++		if (unlikely(err))
++			goto out_unlock;
++	} else if ((ia->ia_valid & (ATTR_UID | ATTR_GID))
++		   && (ia->ia_valid & ATTR_CTIME)) {
++		err = security_path_chown(&a->h_path, ia->ia_uid, ia->ia_gid);
++		if (unlikely(err))
++			goto out_unlock;
++	}
++
++	if (ia->ia_valid & ATTR_SIZE) {
++		struct file *f;
++
++		if (ia->ia_size < i_size_read(inode))
++			/* unmap only */
++			truncate_setsize(inode, ia->ia_size);
++
++		f = NULL;
++		if (ia->ia_valid & ATTR_FILE)
++			f = ia->ia_file;
++		inode_unlock(a->h_inode);
++		err = vfsub_trunc(&a->h_path, ia->ia_size, ia->ia_valid, f);
++		inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
++	} else {
++		delegated = NULL;
++		while (1) {
++			err = vfsub_notify_change(&a->h_path, ia, &delegated);
++			if (delegated) {
++				err = break_deleg_wait(&delegated);
++				if (!err)
++					continue;
++			}
++			break;
++		}
++	}
++	/*
++	 * regardless aufs 'acl' option setting.
++	 * why don't all acl-aware fs call this func from their ->setattr()?
++	 */
++	if (!err && (ia->ia_valid & ATTR_MODE))
++		err = vfsub_acl_chmod(a->h_inode, ia->ia_mode);
++	if (!err)
++		au_cpup_attr_changeable(inode);
++
++out_unlock:
++	inode_unlock(a->h_inode);
++	au_unpin(&a->pin);
++	if (unlikely(err))
++		au_update_dbtop(dentry);
++out_dentry:
++	di_write_unlock(dentry);
++	if (file) {
++		fi_write_unlock(file);
++		ia->ia_file = file;
++		ia->ia_valid |= ATTR_FILE;
++	}
++out_si:
++	si_read_unlock(sb);
++out_kfree:
++	au_kfree_rcu(a);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
++static int au_h_path_to_set_attr(struct dentry *dentry,
++				 struct au_icpup_args *a, struct path *h_path)
++{
++	int err;
++	struct super_block *sb;
++
++	sb = dentry->d_sb;
++	a->udba = au_opt_udba(sb);
++	/* no d_unlinked(), to set UDBA_NONE for root */
++	if (d_unhashed(dentry))
++		a->udba = AuOpt_UDBA_NONE;
++	if (a->udba != AuOpt_UDBA_NONE) {
++		AuDebugOn(IS_ROOT(dentry));
++		err = au_reval_for_attr(dentry, au_sigen(sb));
++		if (unlikely(err))
++			goto out;
++	}
++	err = au_pin_and_icpup(dentry, /*ia*/NULL, a);
++	if (unlikely(err < 0))
++		goto out;
++
++	h_path->dentry = a->h_path.dentry;
++	h_path->mnt = au_sbr_mnt(sb, a->btgt);
++
++out:
++	return err;
++}
++
++ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
++		  struct au_sxattr *arg)
++{
++	int err;
++	struct path h_path;
++	struct super_block *sb;
++	struct au_icpup_args *a;
++	struct inode *h_inode;
++
++	IMustLock(inode);
++
++	err = -ENOMEM;
++	a = kzalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	sb = dentry->d_sb;
++	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out_kfree;
++
++	h_path.dentry = NULL;	/* silence gcc */
++	di_write_lock_child(dentry);
++	err = au_h_path_to_set_attr(dentry, a, &h_path);
++	if (unlikely(err))
++		goto out_di;
++
++	inode_unlock(a->h_inode);
++	switch (arg->type) {
++	case AU_XATTR_SET:
++		AuDebugOn(d_is_negative(h_path.dentry));
++		err = vfsub_setxattr(h_path.dentry,
++				     arg->u.set.name, arg->u.set.value,
++				     arg->u.set.size, arg->u.set.flags);
++		break;
++	case AU_ACL_SET:
++		err = -EOPNOTSUPP;
++		h_inode = d_inode(h_path.dentry);
++		if (h_inode->i_op->set_acl)
++			/* this will call posix_acl_update_mode */
++			err = h_inode->i_op->set_acl(h_inode,
++						     arg->u.acl_set.acl,
++						     arg->u.acl_set.type);
++		break;
++	}
++	if (!err)
++		au_cpup_attr_timesizes(inode);
++
++	au_unpin(&a->pin);
++	if (unlikely(err))
++		au_update_dbtop(dentry);
++
++out_di:
++	di_write_unlock(dentry);
++	si_read_unlock(sb);
++out_kfree:
++	au_kfree_rcu(a);
++out:
++	AuTraceErr(err);
++	return err;
++}
++#endif
++
++static void au_refresh_iattr(struct inode *inode, struct kstat *st,
++			     unsigned int nlink)
++{
++	unsigned int n;
++
++	inode->i_mode = st->mode;
++	/* don't i_[ug]id_write() here */
++	inode->i_uid = st->uid;
++	inode->i_gid = st->gid;
++	inode->i_atime = st->atime;
++	inode->i_mtime = st->mtime;
++	inode->i_ctime = st->ctime;
++
++	au_cpup_attr_nlink(inode, /*force*/0);
++	if (S_ISDIR(inode->i_mode)) {
++		n = inode->i_nlink;
++		n -= nlink;
++		n += st->nlink;
++		smp_mb(); /* for i_nlink */
++		/* 0 can happen */
++		set_nlink(inode, n);
++	}
++
++	spin_lock(&inode->i_lock);
++	inode->i_blocks = st->blocks;
++	i_size_write(inode, st->size);
++	spin_unlock(&inode->i_lock);
++}
++
++/*
++ * common routine for aufs_getattr() and au_getxattr().
++ * returns zero or negative (an error).
++ * @dentry will be read-locked in success.
++ */
++int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path,
++		      int locked)
++{
++	int err;
++	unsigned int mnt_flags, sigen;
++	unsigned char udba_none;
++	aufs_bindex_t bindex;
++	struct super_block *sb, *h_sb;
++	struct inode *inode;
++
++	h_path->mnt = NULL;
++	h_path->dentry = NULL;
++
++	err = 0;
++	sb = dentry->d_sb;
++	mnt_flags = au_mntflags(sb);
++	udba_none = !!au_opt_test(mnt_flags, UDBA_NONE);
++
++	if (unlikely(locked))
++		goto body; /* skip locking dinfo */
++
++	/* support fstat(2) */
++	if (!d_unlinked(dentry) && !udba_none) {
++		sigen = au_sigen(sb);
++		err = au_digen_test(dentry, sigen);
++		if (!err) {
++			di_read_lock_child(dentry, AuLock_IR);
++			err = au_dbrange_test(dentry);
++			if (unlikely(err)) {
++				di_read_unlock(dentry, AuLock_IR);
++				goto out;
++			}
++		} else {
++			AuDebugOn(IS_ROOT(dentry));
++			di_write_lock_child(dentry);
++			err = au_dbrange_test(dentry);
++			if (!err)
++				err = au_reval_for_attr(dentry, sigen);
++			if (!err)
++				di_downgrade_lock(dentry, AuLock_IR);
++			else {
++				di_write_unlock(dentry);
++				goto out;
++			}
++		}
++	} else
++		di_read_lock_child(dentry, AuLock_IR);
++
++body:
++	inode = d_inode(dentry);
++	bindex = au_ibtop(inode);
++	h_path->mnt = au_sbr_mnt(sb, bindex);
++	h_sb = h_path->mnt->mnt_sb;
++	if (!force
++	    && !au_test_fs_bad_iattr(h_sb)
++	    && udba_none)
++		goto out; /* success */
++
++	if (au_dbtop(dentry) == bindex)
++		h_path->dentry = au_h_dptr(dentry, bindex);
++	else if (au_opt_test(mnt_flags, PLINK) && au_plink_test(inode)) {
++		h_path->dentry = au_plink_lkup(inode, bindex);
++		if (IS_ERR(h_path->dentry))
++			/* pretending success */
++			h_path->dentry = NULL;
++		else
++			dput(h_path->dentry);
++	}
++
++out:
++	return err;
++}
++
++static int aufs_getattr(const struct path *path, struct kstat *st,
++			u32 request, unsigned int query)
++{
++	int err;
++	unsigned char positive;
++	struct path h_path;
++	struct dentry *dentry;
++	struct inode *inode;
++	struct super_block *sb;
++
++	dentry = path->dentry;
++	inode = d_inode(dentry);
++	sb = dentry->d_sb;
++	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out;
++	err = au_h_path_getattr(dentry, /*force*/0, &h_path, /*locked*/0);
++	if (unlikely(err))
++		goto out_si;
++	if (unlikely(!h_path.dentry))
++		/* illegally overlapped or something */
++		goto out_fill; /* pretending success */
++
++	positive = d_is_positive(h_path.dentry);
++	if (positive)
++		/* no vfsub version */
++		err = vfs_getattr(&h_path, st, request, query);
++	if (!err) {
++		if (positive)
++			au_refresh_iattr(inode, st,
++					 d_inode(h_path.dentry)->i_nlink);
++		goto out_fill; /* success */
++	}
++	AuTraceErr(err);
++	goto out_di;
++
++out_fill:
++	generic_fillattr(inode, st);
++out_di:
++	di_read_unlock(dentry, AuLock_IR);
++out_si:
++	si_read_unlock(sb);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static const char *aufs_get_link(struct dentry *dentry, struct inode *inode,
++				 struct delayed_call *done)
++{
++	const char *ret;
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++	int err;
++	aufs_bindex_t bindex;
++
++	ret = NULL; /* suppress a warning */
++	err = -ECHILD;
++	if (!dentry)
++		goto out;
++
++	err = aufs_read_lock(dentry, AuLock_IR | AuLock_GEN);
++	if (unlikely(err))
++		goto out;
++
++	err = au_d_hashed_positive(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++
++	err = -EINVAL;
++	inode = d_inode(dentry);
++	bindex = au_ibtop(inode);
++	h_inode = au_h_iptr(inode, bindex);
++	if (unlikely(!h_inode->i_op->get_link))
++		goto out_unlock;
++
++	err = -EBUSY;
++	h_dentry = NULL;
++	if (au_dbtop(dentry) <= bindex) {
++		h_dentry = au_h_dptr(dentry, bindex);
++		if (h_dentry)
++			dget(h_dentry);
++	}
++	if (!h_dentry) {
++		h_dentry = d_find_any_alias(h_inode);
++		if (IS_ERR(h_dentry)) {
++			err = PTR_ERR(h_dentry);
++			goto out_unlock;
++		}
++	}
++	if (unlikely(!h_dentry))
++		goto out_unlock;
++
++	err = 0;
++	AuDbg("%ps\n", h_inode->i_op->get_link);
++	AuDbgDentry(h_dentry);
++	ret = vfs_get_link(h_dentry, done);
++	dput(h_dentry);
++	if (IS_ERR(ret))
++		err = PTR_ERR(ret);
++
++out_unlock:
++	aufs_read_unlock(dentry, AuLock_IR);
++out:
++	if (unlikely(err))
++		ret = ERR_PTR(err);
++	AuTraceErrPtr(ret);
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_is_special(struct inode *inode)
++{
++	return (inode->i_mode & (S_IFBLK | S_IFCHR | S_IFIFO | S_IFSOCK));
++}
++
++static int aufs_update_time(struct inode *inode, struct timespec64 *ts,
++			    int flags)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct super_block *sb;
++	struct inode *h_inode;
++	struct vfsmount *h_mnt;
++
++	sb = inode->i_sb;
++	WARN_ONCE((flags & S_ATIME) && !IS_NOATIME(inode),
++		  "unexpected s_flags 0x%lx", sb->s_flags);
++
++	/* mmap_sem might be acquired already, cf. aufs_mmap() */
++	lockdep_off();
++	si_read_lock(sb, AuLock_FLUSH);
++	ii_write_lock_child(inode);
++
++	err = 0;
++	bindex = au_ibtop(inode);
++	h_inode = au_h_iptr(inode, bindex);
++	if (!au_test_ro(sb, bindex, inode)) {
++		h_mnt = au_sbr_mnt(sb, bindex);
++		err = vfsub_mnt_want_write(h_mnt);
++		if (!err) {
++			err = vfsub_update_time(h_inode, ts, flags);
++			vfsub_mnt_drop_write(h_mnt);
++		}
++	} else if (au_is_special(h_inode)) {
++		/*
++		 * Never copy-up here.
++		 * These special files may already be opened and used for
++		 * communicating. If we copied it up, then the communication
++		 * would be corrupted.
++		 */
++		AuWarn1("timestamps for i%lu are ignored "
++			"since it is on readonly branch (hi%lu).\n",
++			inode->i_ino, h_inode->i_ino);
++	} else if (flags & ~S_ATIME) {
++		err = -EIO;
++		AuIOErr1("unexpected flags 0x%x\n", flags);
++		AuDebugOn(1);
++	}
++
++	if (!err)
++		au_cpup_attr_timesizes(inode);
++	ii_write_unlock(inode);
++	si_read_unlock(sb);
++	lockdep_on();
++
++	if (!err && (flags & S_VERSION))
++		inode_inc_iversion(inode);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* no getattr version will be set by module.c:aufs_init() */
++struct inode_operations aufs_iop_nogetattr[AuIop_Last],
++	aufs_iop[] = {
++	[AuIop_SYMLINK] = {
++		.permission	= aufs_permission,
++#ifdef CONFIG_FS_POSIX_ACL
++		.get_acl	= aufs_get_acl,
++		.set_acl	= aufs_set_acl, /* unsupport for symlink? */
++#endif
++
++		.setattr	= aufs_setattr,
++		.getattr	= aufs_getattr,
++
++#ifdef CONFIG_AUFS_XATTR
++		.listxattr	= aufs_listxattr,
++#endif
++
++		.get_link	= aufs_get_link,
++
++		/* .update_time	= aufs_update_time */
++	},
++	[AuIop_DIR] = {
++		.create		= aufs_create,
++		.lookup		= aufs_lookup,
++		.link		= aufs_link,
++		.unlink		= aufs_unlink,
++		.symlink	= aufs_symlink,
++		.mkdir		= aufs_mkdir,
++		.rmdir		= aufs_rmdir,
++		.mknod		= aufs_mknod,
++		.rename		= aufs_rename,
++
++		.permission	= aufs_permission,
++#ifdef CONFIG_FS_POSIX_ACL
++		.get_acl	= aufs_get_acl,
++		.set_acl	= aufs_set_acl,
++#endif
++
++		.setattr	= aufs_setattr,
++		.getattr	= aufs_getattr,
++
++#ifdef CONFIG_AUFS_XATTR
++		.listxattr	= aufs_listxattr,
++#endif
++
++		.update_time	= aufs_update_time,
++		.atomic_open	= aufs_atomic_open,
++		.tmpfile	= aufs_tmpfile
++	},
++	[AuIop_OTHER] = {
++		.permission	= aufs_permission,
++#ifdef CONFIG_FS_POSIX_ACL
++		.get_acl	= aufs_get_acl,
++		.set_acl	= aufs_set_acl,
++#endif
++
++		.setattr	= aufs_setattr,
++		.getattr	= aufs_getattr,
++
++#ifdef CONFIG_AUFS_XATTR
++		.listxattr	= aufs_listxattr,
++#endif
++
++		.update_time	= aufs_update_time
++	}
++};
+diff -Nurp linux-5.4/fs/aufs/i_op_del.c linux-5.4-aufs/fs/aufs/i_op_del.c
+--- linux-5.4/fs/aufs/i_op_del.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/i_op_del.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,500 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode operations (del entry)
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++/*
++ * decide if a new whiteout for @dentry is necessary or not.
++ * when it is necessary, prepare the parent dir for the upper branch whose
++ * branch index is @bcpup for creation. the actual creation of the whiteout will
++ * be done by caller.
++ * return value:
++ * 0: wh is unnecessary
++ * plus: wh is necessary
++ * minus: error
++ */
++int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup)
++{
++	int need_wh, err;
++	aufs_bindex_t btop;
++	struct super_block *sb;
++
++	sb = dentry->d_sb;
++	btop = au_dbtop(dentry);
++	if (*bcpup < 0) {
++		*bcpup = btop;
++		if (au_test_ro(sb, btop, d_inode(dentry))) {
++			err = AuWbrCopyup(au_sbi(sb), dentry);
++			*bcpup = err;
++			if (unlikely(err < 0))
++				goto out;
++		}
++	} else
++		AuDebugOn(btop < *bcpup
++			  || au_test_ro(sb, *bcpup, d_inode(dentry)));
++	AuDbg("bcpup %d, btop %d\n", *bcpup, btop);
++
++	if (*bcpup != btop) {
++		err = au_cpup_dirs(dentry, *bcpup);
++		if (unlikely(err))
++			goto out;
++		need_wh = 1;
++	} else {
++		struct au_dinfo *dinfo, *tmp;
++
++		need_wh = -ENOMEM;
++		dinfo = au_di(dentry);
++		tmp = au_di_alloc(sb, AuLsc_DI_TMP);
++		if (tmp) {
++			au_di_cp(tmp, dinfo);
++			au_di_swap(tmp, dinfo);
++			/* returns the number of positive dentries */
++			need_wh = au_lkup_dentry(dentry, btop + 1,
++						 /* AuLkup_IGNORE_PERM */ 0);
++			au_di_swap(tmp, dinfo);
++			au_rw_write_unlock(&tmp->di_rwsem);
++			au_di_free(tmp);
++		}
++	}
++	AuDbg("need_wh %d\n", need_wh);
++	err = need_wh;
++
++out:
++	return err;
++}
++
++/*
++ * simple tests for the del-entry operations.
++ * following the checks in vfs, plus the parent-child relationship.
++ */
++int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
++	       struct dentry *h_parent, int isdir)
++{
++	int err;
++	umode_t h_mode;
++	struct dentry *h_dentry, *h_latest;
++	struct inode *h_inode;
++
++	h_dentry = au_h_dptr(dentry, bindex);
++	if (d_really_is_positive(dentry)) {
++		err = -ENOENT;
++		if (unlikely(d_is_negative(h_dentry)))
++			goto out;
++		h_inode = d_inode(h_dentry);
++		if (unlikely(!h_inode->i_nlink))
++			goto out;
++
++		h_mode = h_inode->i_mode;
++		if (!isdir) {
++			err = -EISDIR;
++			if (unlikely(S_ISDIR(h_mode)))
++				goto out;
++		} else if (unlikely(!S_ISDIR(h_mode))) {
++			err = -ENOTDIR;
++			goto out;
++		}
++	} else {
++		/* rename(2) case */
++		err = -EIO;
++		if (unlikely(d_is_positive(h_dentry)))
++			goto out;
++	}
++
++	err = -ENOENT;
++	/* expected parent dir is locked */
++	if (unlikely(h_parent != h_dentry->d_parent))
++		goto out;
++	err = 0;
++
++	/*
++	 * rmdir a dir may break the consistency on some filesystem.
++	 * let's try heavy test.
++	 */
++	err = -EACCES;
++	if (unlikely(!au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1)
++		     && au_test_h_perm(d_inode(h_parent),
++				       MAY_EXEC | MAY_WRITE)))
++		goto out;
++
++	h_latest = au_sio_lkup_one(&dentry->d_name, h_parent);
++	err = -EIO;
++	if (IS_ERR(h_latest))
++		goto out;
++	if (h_latest == h_dentry)
++		err = 0;
++	dput(h_latest);
++
++out:
++	return err;
++}
++
++/*
++ * decide the branch where we operate for @dentry. the branch index will be set
++ * @rbcpup. after deciding it, 'pin' it and store the timestamps of the parent
++ * dir for reverting.
++ * when a new whiteout is necessary, create it.
++ */
++static struct dentry*
++lock_hdir_create_wh(struct dentry *dentry, int isdir, aufs_bindex_t *rbcpup,
++		    struct au_dtime *dt, struct au_pin *pin)
++{
++	struct dentry *wh_dentry;
++	struct super_block *sb;
++	struct path h_path;
++	int err, need_wh;
++	unsigned int udba;
++	aufs_bindex_t bcpup;
++
++	need_wh = au_wr_dir_need_wh(dentry, isdir, rbcpup);
++	wh_dentry = ERR_PTR(need_wh);
++	if (unlikely(need_wh < 0))
++		goto out;
++
++	sb = dentry->d_sb;
++	udba = au_opt_udba(sb);
++	bcpup = *rbcpup;
++	err = au_pin(pin, dentry, bcpup, udba,
++		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++	wh_dentry = ERR_PTR(err);
++	if (unlikely(err))
++		goto out;
++
++	h_path.dentry = au_pinned_h_parent(pin);
++	if (udba != AuOpt_UDBA_NONE
++	    && au_dbtop(dentry) == bcpup) {
++		err = au_may_del(dentry, bcpup, h_path.dentry, isdir);
++		wh_dentry = ERR_PTR(err);
++		if (unlikely(err))
++			goto out_unpin;
++	}
++
++	h_path.mnt = au_sbr_mnt(sb, bcpup);
++	au_dtime_store(dt, au_pinned_parent(pin), &h_path);
++	wh_dentry = NULL;
++	if (!need_wh)
++		goto out; /* success, no need to create whiteout */
++
++	wh_dentry = au_wh_create(dentry, bcpup, h_path.dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_unpin;
++
++	/* returns with the parent is locked and wh_dentry is dget-ed */
++	goto out; /* success */
++
++out_unpin:
++	au_unpin(pin);
++out:
++	return wh_dentry;
++}
++
++/*
++ * when removing a dir, rename it to a unique temporary whiteout-ed name first
++ * in order to be revertible and save time for removing many child whiteouts
++ * under the dir.
++ * returns 1 when there are too many child whiteout and caller should remove
++ * them asynchronously. returns 0 when the number of children is enough small to
++ * remove now or the branch fs is a remote fs.
++ * otherwise return an error.
++ */
++static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex,
++			   struct au_nhash *whlist, struct inode *dir)
++{
++	int rmdir_later, err, dirwh;
++	struct dentry *h_dentry;
++	struct super_block *sb;
++	struct inode *inode;
++
++	sb = dentry->d_sb;
++	SiMustAnyLock(sb);
++	h_dentry = au_h_dptr(dentry, bindex);
++	err = au_whtmp_ren(h_dentry, au_sbr(sb, bindex));
++	if (unlikely(err))
++		goto out;
++
++	/* stop monitoring */
++	inode = d_inode(dentry);
++	au_hn_free(au_hi(inode, bindex));
++
++	if (!au_test_fs_remote(h_dentry->d_sb)) {
++		dirwh = au_sbi(sb)->si_dirwh;
++		rmdir_later = (dirwh <= 1);
++		if (!rmdir_later)
++			rmdir_later = au_nhash_test_longer_wh(whlist, bindex,
++							      dirwh);
++		if (rmdir_later)
++			return rmdir_later;
++	}
++
++	err = au_whtmp_rmdir(dir, bindex, h_dentry, whlist);
++	if (unlikely(err)) {
++		AuIOErr("rmdir %pd, b%d failed, %d. ignored\n",
++			h_dentry, bindex, err);
++		err = 0;
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * final procedure for deleting a entry.
++ * maintain dentry and iattr.
++ */
++static void epilog(struct inode *dir, struct dentry *dentry,
++		   aufs_bindex_t bindex)
++{
++	struct inode *inode;
++
++	inode = d_inode(dentry);
++	d_drop(dentry);
++	inode->i_ctime = dir->i_ctime;
++
++	au_dir_ts(dir, bindex);
++	inode_inc_iversion(dir);
++}
++
++/*
++ * when an error happened, remove the created whiteout and revert everything.
++ */
++static int do_revert(int err, struct inode *dir, aufs_bindex_t bindex,
++		     aufs_bindex_t bwh, struct dentry *wh_dentry,
++		     struct dentry *dentry, struct au_dtime *dt)
++{
++	int rerr;
++	struct path h_path = {
++		.dentry	= wh_dentry,
++		.mnt	= au_sbr_mnt(dir->i_sb, bindex)
++	};
++
++	rerr = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, dentry);
++	if (!rerr) {
++		au_set_dbwh(dentry, bwh);
++		au_dtime_revert(dt);
++		return 0;
++	}
++
++	AuIOErr("%pd reverting whiteout failed(%d, %d)\n", dentry, err, rerr);
++	return -EIO;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int aufs_unlink(struct inode *dir, struct dentry *dentry)
++{
++	int err;
++	aufs_bindex_t bwh, bindex, btop;
++	struct inode *inode, *h_dir, *delegated;
++	struct dentry *parent, *wh_dentry;
++	/* to reduce stack size */
++	struct {
++		struct au_dtime dt;
++		struct au_pin pin;
++		struct path h_path;
++	} *a;
++
++	IMustLock(dir);
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
++	if (unlikely(err))
++		goto out_free;
++	err = au_d_hashed_positive(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++	inode = d_inode(dentry);
++	IMustLock(inode);
++	err = -EISDIR;
++	if (unlikely(d_is_dir(dentry)))
++		goto out_unlock; /* possible? */
++
++	btop = au_dbtop(dentry);
++	bwh = au_dbwh(dentry);
++	bindex = -1;
++	parent = dentry->d_parent; /* dir inode is locked */
++	di_write_lock_parent(parent);
++	wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/0, &bindex, &a->dt,
++					&a->pin);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_parent;
++
++	a->h_path.mnt = au_sbr_mnt(dentry->d_sb, btop);
++	a->h_path.dentry = au_h_dptr(dentry, btop);
++	dget(a->h_path.dentry);
++	if (bindex == btop) {
++		h_dir = au_pinned_h_dir(&a->pin);
++		delegated = NULL;
++		err = vfsub_unlink(h_dir, &a->h_path, &delegated, /*force*/0);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal unlink\n");
++			iput(delegated);
++		}
++	} else {
++		/* dir inode is locked */
++		h_dir = d_inode(wh_dentry->d_parent);
++		IMustLock(h_dir);
++		err = 0;
++	}
++
++	if (!err) {
++		vfsub_drop_nlink(inode);
++		epilog(dir, dentry, bindex);
++
++		/* update target timestamps */
++		if (bindex == btop) {
++			vfsub_update_h_iattr(&a->h_path, /*did*/NULL);
++			/*ignore*/
++			inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
++		} else
++			/* todo: this timestamp may be reverted later */
++			inode->i_ctime = h_dir->i_ctime;
++		goto out_unpin; /* success */
++	}
++
++	/* revert */
++	if (wh_dentry) {
++		int rerr;
++
++		rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
++				 &a->dt);
++		if (rerr)
++			err = rerr;
++	}
++
++out_unpin:
++	au_unpin(&a->pin);
++	dput(wh_dentry);
++	dput(a->h_path.dentry);
++out_parent:
++	di_write_unlock(parent);
++out_unlock:
++	aufs_read_unlock(dentry, AuLock_DW);
++out_free:
++	au_kfree_rcu(a);
++out:
++	return err;
++}
++
++int aufs_rmdir(struct inode *dir, struct dentry *dentry)
++{
++	int err, rmdir_later;
++	aufs_bindex_t bwh, bindex, btop;
++	struct inode *inode;
++	struct dentry *parent, *wh_dentry, *h_dentry;
++	struct au_whtmp_rmdir *args;
++	/* to reduce stack size */
++	struct {
++		struct au_dtime dt;
++		struct au_pin pin;
++	} *a;
++
++	IMustLock(dir);
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
++	if (unlikely(err))
++		goto out_free;
++	err = au_alive_dir(dentry);
++	if (unlikely(err))
++		goto out_unlock;
++	inode = d_inode(dentry);
++	IMustLock(inode);
++	err = -ENOTDIR;
++	if (unlikely(!d_is_dir(dentry)))
++		goto out_unlock; /* possible? */
++
++	err = -ENOMEM;
++	args = au_whtmp_rmdir_alloc(dir->i_sb, GFP_NOFS);
++	if (unlikely(!args))
++		goto out_unlock;
++
++	parent = dentry->d_parent; /* dir inode is locked */
++	di_write_lock_parent(parent);
++	err = au_test_empty(dentry, &args->whlist);
++	if (unlikely(err))
++		goto out_parent;
++
++	btop = au_dbtop(dentry);
++	bwh = au_dbwh(dentry);
++	bindex = -1;
++	wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/1, &bindex, &a->dt,
++					&a->pin);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry))
++		goto out_parent;
++
++	h_dentry = au_h_dptr(dentry, btop);
++	dget(h_dentry);
++	rmdir_later = 0;
++	if (bindex == btop) {
++		err = renwh_and_rmdir(dentry, btop, &args->whlist, dir);
++		if (err > 0) {
++			rmdir_later = err;
++			err = 0;
++		}
++	} else {
++		/* stop monitoring */
++		au_hn_free(au_hi(inode, btop));
++
++		/* dir inode is locked */
++		IMustLock(d_inode(wh_dentry->d_parent));
++		err = 0;
++	}
++
++	if (!err) {
++		vfsub_dead_dir(inode);
++		au_set_dbdiropq(dentry, -1);
++		epilog(dir, dentry, bindex);
++
++		if (rmdir_later) {
++			au_whtmp_kick_rmdir(dir, btop, h_dentry, args);
++			args = NULL;
++		}
++
++		goto out_unpin; /* success */
++	}
++
++	/* revert */
++	AuLabel(revert);
++	if (wh_dentry) {
++		int rerr;
++
++		rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
++				 &a->dt);
++		if (rerr)
++			err = rerr;
++	}
++
++out_unpin:
++	au_unpin(&a->pin);
++	dput(wh_dentry);
++	dput(h_dentry);
++out_parent:
++	di_write_unlock(parent);
++	if (args)
++		au_whtmp_rmdir_free(args);
++out_unlock:
++	aufs_read_unlock(dentry, AuLock_DW);
++out_free:
++	au_kfree_rcu(a);
++out:
++	AuTraceErr(err);
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/i_op_ren.c linux-5.4-aufs/fs/aufs/i_op_ren.c
+--- linux-5.4/fs/aufs/i_op_ren.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/i_op_ren.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,1237 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * inode operation (rename entry)
++ * todo: this is crazy monster
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++enum { AuSRC, AuDST, AuSrcDst };
++enum { AuPARENT, AuCHILD, AuParentChild };
++
++#define AuRen_ISDIR_SRC		1
++#define AuRen_ISDIR_DST		(1 << 1)
++#define AuRen_ISSAMEDIR		(1 << 2)
++#define AuRen_WHSRC		(1 << 3)
++#define AuRen_WHDST		(1 << 4)
++#define AuRen_MNT_WRITE		(1 << 5)
++#define AuRen_DT_DSTDIR		(1 << 6)
++#define AuRen_DIROPQ_SRC	(1 << 7)
++#define AuRen_DIROPQ_DST	(1 << 8)
++#define AuRen_DIRREN		(1 << 9)
++#define AuRen_DROPPED_SRC	(1 << 10)
++#define AuRen_DROPPED_DST	(1 << 11)
++#define au_ftest_ren(flags, name)	((flags) & AuRen_##name)
++#define au_fset_ren(flags, name) \
++	do { (flags) |= AuRen_##name; } while (0)
++#define au_fclr_ren(flags, name) \
++	do { (flags) &= ~AuRen_##name; } while (0)
++
++#ifndef CONFIG_AUFS_DIRREN
++#undef AuRen_DIRREN
++#define AuRen_DIRREN		0
++#endif
++
++struct au_ren_args {
++	struct {
++		struct dentry *dentry, *h_dentry, *parent, *h_parent,
++			*wh_dentry;
++		struct inode *dir, *inode;
++		struct au_hinode *hdir, *hinode;
++		struct au_dtime dt[AuParentChild];
++		aufs_bindex_t btop, bdiropq;
++	} sd[AuSrcDst];
++
++#define src_dentry	sd[AuSRC].dentry
++#define src_dir		sd[AuSRC].dir
++#define src_inode	sd[AuSRC].inode
++#define src_h_dentry	sd[AuSRC].h_dentry
++#define src_parent	sd[AuSRC].parent
++#define src_h_parent	sd[AuSRC].h_parent
++#define src_wh_dentry	sd[AuSRC].wh_dentry
++#define src_hdir	sd[AuSRC].hdir
++#define src_hinode	sd[AuSRC].hinode
++#define src_h_dir	sd[AuSRC].hdir->hi_inode
++#define src_dt		sd[AuSRC].dt
++#define src_btop	sd[AuSRC].btop
++#define src_bdiropq	sd[AuSRC].bdiropq
++
++#define dst_dentry	sd[AuDST].dentry
++#define dst_dir		sd[AuDST].dir
++#define dst_inode	sd[AuDST].inode
++#define dst_h_dentry	sd[AuDST].h_dentry
++#define dst_parent	sd[AuDST].parent
++#define dst_h_parent	sd[AuDST].h_parent
++#define dst_wh_dentry	sd[AuDST].wh_dentry
++#define dst_hdir	sd[AuDST].hdir
++#define dst_hinode	sd[AuDST].hinode
++#define dst_h_dir	sd[AuDST].hdir->hi_inode
++#define dst_dt		sd[AuDST].dt
++#define dst_btop	sd[AuDST].btop
++#define dst_bdiropq	sd[AuDST].bdiropq
++
++	struct dentry *h_trap;
++	struct au_branch *br;
++	struct path h_path;
++	struct au_nhash whlist;
++	aufs_bindex_t btgt, src_bwh;
++
++	struct {
++		unsigned short auren_flags;
++		unsigned char flags;	/* syscall parameter */
++		unsigned char exchange;
++	} __packed;
++
++	struct au_whtmp_rmdir *thargs;
++	struct dentry *h_dst;
++	struct au_hinode *h_root;
++};
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * functions for reverting.
++ * when an error happened in a single rename systemcall, we should revert
++ * everything as if nothing happened.
++ * we don't need to revert the copied-up/down the parent dir since they are
++ * harmless.
++ */
++
++#define RevertFailure(fmt, ...) do { \
++	AuIOErr("revert failure: " fmt " (%d, %d)\n", \
++		##__VA_ARGS__, err, rerr); \
++	err = -EIO; \
++} while (0)
++
++static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx)
++{
++	int rerr;
++	struct dentry *d;
++#define src_or_dst(member) a->sd[idx].member
++
++	d = src_or_dst(dentry); /* {src,dst}_dentry */
++	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
++	rerr = au_diropq_remove(d, a->btgt);
++	au_hn_inode_unlock(src_or_dst(hinode));
++	au_set_dbdiropq(d, src_or_dst(bdiropq));
++	if (rerr)
++		RevertFailure("remove diropq %pd", d);
++
++#undef src_or_dst_
++}
++
++static void au_ren_rev_diropq(int err, struct au_ren_args *a)
++{
++	if (au_ftest_ren(a->auren_flags, DIROPQ_SRC))
++		au_ren_do_rev_diropq(err, a, AuSRC);
++	if (au_ftest_ren(a->auren_flags, DIROPQ_DST))
++		au_ren_do_rev_diropq(err, a, AuDST);
++}
++
++static void au_ren_rev_rename(int err, struct au_ren_args *a)
++{
++	int rerr;
++	struct inode *delegated;
++
++	a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name,
++					  a->src_h_parent);
++	rerr = PTR_ERR(a->h_path.dentry);
++	if (IS_ERR(a->h_path.dentry)) {
++		RevertFailure("lkup one %pd", a->src_dentry);
++		return;
++	}
++
++	delegated = NULL;
++	rerr = vfsub_rename(a->dst_h_dir,
++			    au_h_dptr(a->src_dentry, a->btgt),
++			    a->src_h_dir, &a->h_path, &delegated, a->flags);
++	if (unlikely(rerr == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal rename\n");
++		iput(delegated);
++	}
++	d_drop(a->h_path.dentry);
++	dput(a->h_path.dentry);
++	/* au_set_h_dptr(a->src_dentry, a->btgt, NULL); */
++	if (rerr)
++		RevertFailure("rename %pd", a->src_dentry);
++}
++
++static void au_ren_rev_whtmp(int err, struct au_ren_args *a)
++{
++	int rerr;
++	struct inode *delegated;
++
++	a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name,
++					  a->dst_h_parent);
++	rerr = PTR_ERR(a->h_path.dentry);
++	if (IS_ERR(a->h_path.dentry)) {
++		RevertFailure("lkup one %pd", a->dst_dentry);
++		return;
++	}
++	if (d_is_positive(a->h_path.dentry)) {
++		d_drop(a->h_path.dentry);
++		dput(a->h_path.dentry);
++		return;
++	}
++
++	delegated = NULL;
++	rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path,
++			    &delegated, a->flags);
++	if (unlikely(rerr == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal rename\n");
++		iput(delegated);
++	}
++	d_drop(a->h_path.dentry);
++	dput(a->h_path.dentry);
++	if (!rerr)
++		au_set_h_dptr(a->dst_dentry, a->btgt, dget(a->h_dst));
++	else
++		RevertFailure("rename %pd", a->h_dst);
++}
++
++static void au_ren_rev_whsrc(int err, struct au_ren_args *a)
++{
++	int rerr;
++
++	a->h_path.dentry = a->src_wh_dentry;
++	rerr = au_wh_unlink_dentry(a->src_h_dir, &a->h_path, a->src_dentry);
++	au_set_dbwh(a->src_dentry, a->src_bwh);
++	if (rerr)
++		RevertFailure("unlink %pd", a->src_wh_dentry);
++}
++#undef RevertFailure
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * when we have to copyup the renaming entry, do it with the rename-target name
++ * in order to minimize the cost (the later actual rename is unnecessary).
++ * otherwise rename it on the target branch.
++ */
++static int au_ren_or_cpup(struct au_ren_args *a)
++{
++	int err;
++	struct dentry *d;
++	struct inode *delegated;
++
++	d = a->src_dentry;
++	if (au_dbtop(d) == a->btgt) {
++		a->h_path.dentry = a->dst_h_dentry;
++		AuDebugOn(au_dbtop(d) != a->btgt);
++		delegated = NULL;
++		err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt),
++				   a->dst_h_dir, &a->h_path, &delegated,
++				   a->flags);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal rename\n");
++			iput(delegated);
++		}
++	} else
++		BUG();
++
++	if (!err && a->h_dst)
++		/* it will be set to dinfo later */
++		dget(a->h_dst);
++
++	return err;
++}
++
++/* cf. aufs_rmdir() */
++static int au_ren_del_whtmp(struct au_ren_args *a)
++{
++	int err;
++	struct inode *dir;
++
++	dir = a->dst_dir;
++	SiMustAnyLock(dir->i_sb);
++	if (!au_nhash_test_longer_wh(&a->whlist, a->btgt,
++				     au_sbi(dir->i_sb)->si_dirwh)
++	    || au_test_fs_remote(a->h_dst->d_sb)) {
++		err = au_whtmp_rmdir(dir, a->btgt, a->h_dst, &a->whlist);
++		if (unlikely(err))
++			pr_warn("failed removing whtmp dir %pd (%d), "
++				"ignored.\n", a->h_dst, err);
++	} else {
++		au_nhash_wh_free(&a->thargs->whlist);
++		a->thargs->whlist = a->whlist;
++		a->whlist.nh_num = 0;
++		au_whtmp_kick_rmdir(dir, a->btgt, a->h_dst, a->thargs);
++		dput(a->h_dst);
++		a->thargs = NULL;
++	}
++
++	return 0;
++}
++
++/* make it 'opaque' dir. */
++static int au_ren_do_diropq(struct au_ren_args *a, int idx)
++{
++	int err;
++	struct dentry *d, *diropq;
++#define src_or_dst(member) a->sd[idx].member
++
++	err = 0;
++	d = src_or_dst(dentry); /* {src,dst}_dentry */
++	src_or_dst(bdiropq) = au_dbdiropq(d);
++	src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt);
++	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
++	diropq = au_diropq_create(d, a->btgt);
++	au_hn_inode_unlock(src_or_dst(hinode));
++	if (IS_ERR(diropq))
++		err = PTR_ERR(diropq);
++	else
++		dput(diropq);
++
++#undef src_or_dst_
++	return err;
++}
++
++static int au_ren_diropq(struct au_ren_args *a)
++{
++	int err;
++	unsigned char always;
++	struct dentry *d;
++
++	err = 0;
++	d = a->dst_dentry; /* already renamed on the branch */
++	always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ);
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    && !au_ftest_ren(a->auren_flags, DIRREN)
++	    && a->btgt != au_dbdiropq(a->src_dentry)
++	    && (a->dst_wh_dentry
++		|| a->btgt <= au_dbdiropq(d)
++		/* hide the lower to keep xino */
++		/* the lowers may not be a dir, but we hide them anyway */
++		|| a->btgt < au_dbbot(d)
++		|| always)) {
++		AuDbg("here\n");
++		err = au_ren_do_diropq(a, AuSRC);
++		if (unlikely(err))
++			goto out;
++		au_fset_ren(a->auren_flags, DIROPQ_SRC);
++	}
++	if (!a->exchange)
++		goto out; /* success */
++
++	d = a->src_dentry; /* already renamed on the branch */
++	if (au_ftest_ren(a->auren_flags, ISDIR_DST)
++	    && a->btgt != au_dbdiropq(a->dst_dentry)
++	    && (a->btgt < au_dbdiropq(d)
++		|| a->btgt < au_dbbot(d)
++		|| always)) {
++		AuDbgDentry(a->src_dentry);
++		AuDbgDentry(a->dst_dentry);
++		err = au_ren_do_diropq(a, AuDST);
++		if (unlikely(err))
++			goto out_rev_src;
++		au_fset_ren(a->auren_flags, DIROPQ_DST);
++	}
++	goto out; /* success */
++
++out_rev_src:
++	AuDbg("err %d, reverting src\n", err);
++	au_ren_rev_diropq(err, a);
++out:
++	return err;
++}
++
++static int do_rename(struct au_ren_args *a)
++{
++	int err;
++	struct dentry *d, *h_d;
++
++	if (!a->exchange) {
++		/* prepare workqueue args for asynchronous rmdir */
++		h_d = a->dst_h_dentry;
++		if (au_ftest_ren(a->auren_flags, ISDIR_DST)
++		    /* && !au_ftest_ren(a->auren_flags, DIRREN) */
++		    && d_is_positive(h_d)) {
++			err = -ENOMEM;
++			a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb,
++							 GFP_NOFS);
++			if (unlikely(!a->thargs))
++				goto out;
++			a->h_dst = dget(h_d);
++		}
++
++		/* create whiteout for src_dentry */
++		if (au_ftest_ren(a->auren_flags, WHSRC)) {
++			a->src_bwh = au_dbwh(a->src_dentry);
++			AuDebugOn(a->src_bwh >= 0);
++			a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt,
++							a->src_h_parent);
++			err = PTR_ERR(a->src_wh_dentry);
++			if (IS_ERR(a->src_wh_dentry))
++				goto out_thargs;
++		}
++
++		/* lookup whiteout for dentry */
++		if (au_ftest_ren(a->auren_flags, WHDST)) {
++			h_d = au_wh_lkup(a->dst_h_parent,
++					 &a->dst_dentry->d_name, a->br);
++			err = PTR_ERR(h_d);
++			if (IS_ERR(h_d))
++				goto out_whsrc;
++			if (d_is_negative(h_d))
++				dput(h_d);
++			else
++				a->dst_wh_dentry = h_d;
++		}
++
++		/* rename dentry to tmpwh */
++		if (a->thargs) {
++			err = au_whtmp_ren(a->dst_h_dentry, a->br);
++			if (unlikely(err))
++				goto out_whdst;
++
++			d = a->dst_dentry;
++			au_set_h_dptr(d, a->btgt, NULL);
++			err = au_lkup_neg(d, a->btgt, /*wh*/0);
++			if (unlikely(err))
++				goto out_whtmp;
++			a->dst_h_dentry = au_h_dptr(d, a->btgt);
++		}
++	}
++
++	BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt);
++#if 0
++	BUG_ON(!au_ftest_ren(a->auren_flags, DIRREN)
++	       && d_is_positive(a->dst_h_dentry)
++	       && a->src_btop != a->btgt);
++#endif
++
++	/* rename by vfs_rename or cpup */
++	err = au_ren_or_cpup(a);
++	if (unlikely(err))
++		/* leave the copied-up one */
++		goto out_whtmp;
++
++	/* make dir opaque */
++	err = au_ren_diropq(a);
++	if (unlikely(err))
++		goto out_rename;
++
++	/* update target timestamps */
++	if (a->exchange) {
++		AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt);
++		a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt);
++		vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
++		a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
++	}
++	AuDebugOn(au_dbtop(a->src_dentry) != a->btgt);
++	a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt);
++	vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
++	a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
++
++	if (!a->exchange) {
++		/* remove whiteout for dentry */
++		if (a->dst_wh_dentry) {
++			a->h_path.dentry = a->dst_wh_dentry;
++			err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path,
++						  a->dst_dentry);
++			if (unlikely(err))
++				goto out_diropq;
++		}
++
++		/* remove whtmp */
++		if (a->thargs)
++			au_ren_del_whtmp(a); /* ignore this error */
++
++		au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0);
++	}
++	err = 0;
++	goto out_success;
++
++out_diropq:
++	au_ren_rev_diropq(err, a);
++out_rename:
++	au_ren_rev_rename(err, a);
++	dput(a->h_dst);
++out_whtmp:
++	if (a->thargs)
++		au_ren_rev_whtmp(err, a);
++out_whdst:
++	dput(a->dst_wh_dentry);
++	a->dst_wh_dentry = NULL;
++out_whsrc:
++	if (a->src_wh_dentry)
++		au_ren_rev_whsrc(err, a);
++out_success:
++	dput(a->src_wh_dentry);
++	dput(a->dst_wh_dentry);
++out_thargs:
++	if (a->thargs) {
++		dput(a->h_dst);
++		au_whtmp_rmdir_free(a->thargs);
++		a->thargs = NULL;
++	}
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * test if @dentry dir can be rename destination or not.
++ * success means, it is a logically empty dir.
++ */
++static int may_rename_dstdir(struct dentry *dentry, struct au_nhash *whlist)
++{
++	return au_test_empty(dentry, whlist);
++}
++
++/*
++ * test if @a->src_dentry dir can be rename source or not.
++ * if it can, return 0.
++ * success means,
++ * - it is a logically empty dir.
++ * - or, it exists on writable branch and has no children including whiteouts
++ *   on the lower branch unless DIRREN is on.
++ */
++static int may_rename_srcdir(struct au_ren_args *a)
++{
++	int err;
++	unsigned int rdhash;
++	aufs_bindex_t btop, btgt;
++	struct dentry *dentry;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++
++	dentry = a->src_dentry;
++	sb = dentry->d_sb;
++	sbinfo = au_sbi(sb);
++	if (au_opt_test(sbinfo->si_mntflags, DIRREN))
++		au_fset_ren(a->auren_flags, DIRREN);
++
++	btgt = a->btgt;
++	btop = au_dbtop(dentry);
++	if (btop != btgt) {
++		struct au_nhash whlist;
++
++		SiMustAnyLock(sb);
++		rdhash = sbinfo->si_rdhash;
++		if (!rdhash)
++			rdhash = au_rdhash_est(au_dir_size(/*file*/NULL,
++							   dentry));
++		err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
++		if (unlikely(err))
++			goto out;
++		err = au_test_empty(dentry, &whlist);
++		au_nhash_wh_free(&whlist);
++		goto out;
++	}
++
++	if (btop == au_dbtaildir(dentry))
++		return 0; /* success */
++
++	err = au_test_empty_lower(dentry);
++
++out:
++	if (err == -ENOTEMPTY) {
++		if (au_ftest_ren(a->auren_flags, DIRREN)) {
++			err = 0;
++		} else {
++			AuWarn1("renaming dir who has child(ren) on multiple "
++				"branches, is not supported\n");
++			err = -EXDEV;
++		}
++	}
++	return err;
++}
++
++/* side effect: sets whlist and h_dentry */
++static int au_ren_may_dir(struct au_ren_args *a)
++{
++	int err;
++	unsigned int rdhash;
++	struct dentry *d;
++
++	d = a->dst_dentry;
++	SiMustAnyLock(d->d_sb);
++
++	err = 0;
++	if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) {
++		rdhash = au_sbi(d->d_sb)->si_rdhash;
++		if (!rdhash)
++			rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d));
++		err = au_nhash_alloc(&a->whlist, rdhash, GFP_NOFS);
++		if (unlikely(err))
++			goto out;
++
++		if (!a->exchange) {
++			au_set_dbtop(d, a->dst_btop);
++			err = may_rename_dstdir(d, &a->whlist);
++			au_set_dbtop(d, a->btgt);
++		} else
++			err = may_rename_srcdir(a);
++	}
++	a->dst_h_dentry = au_h_dptr(d, au_dbtop(d));
++	if (unlikely(err))
++		goto out;
++
++	d = a->src_dentry;
++	a->src_h_dentry = au_h_dptr(d, au_dbtop(d));
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
++		err = may_rename_srcdir(a);
++		if (unlikely(err)) {
++			au_nhash_wh_free(&a->whlist);
++			a->whlist.nh_num = 0;
++		}
++	}
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * simple tests for rename.
++ * following the checks in vfs, plus the parent-child relationship.
++ */
++static int au_may_ren(struct au_ren_args *a)
++{
++	int err, isdir;
++	struct inode *h_inode;
++
++	if (a->src_btop == a->btgt) {
++		err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent,
++				 au_ftest_ren(a->auren_flags, ISDIR_SRC));
++		if (unlikely(err))
++			goto out;
++		err = -EINVAL;
++		if (unlikely(a->src_h_dentry == a->h_trap))
++			goto out;
++	}
++
++	err = 0;
++	if (a->dst_btop != a->btgt)
++		goto out;
++
++	err = -ENOTEMPTY;
++	if (unlikely(a->dst_h_dentry == a->h_trap))
++		goto out;
++
++	err = -EIO;
++	isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST);
++	if (d_really_is_negative(a->dst_dentry)) {
++		if (d_is_negative(a->dst_h_dentry))
++			err = au_may_add(a->dst_dentry, a->btgt,
++					 a->dst_h_parent, isdir);
++	} else {
++		if (unlikely(d_is_negative(a->dst_h_dentry)))
++			goto out;
++		h_inode = d_inode(a->dst_h_dentry);
++		if (h_inode->i_nlink)
++			err = au_may_del(a->dst_dentry, a->btgt,
++					 a->dst_h_parent, isdir);
++	}
++
++out:
++	if (unlikely(err == -ENOENT || err == -EEXIST))
++		err = -EIO;
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * locking order
++ * (VFS)
++ * - src_dir and dir by lock_rename()
++ * - inode if exists
++ * (aufs)
++ * - lock all
++ *   + src_dentry and dentry by aufs_read_and_write_lock2() which calls,
++ *     + si_read_lock
++ *     + di_write_lock2_child()
++ *       + di_write_lock_child()
++ *	   + ii_write_lock_child()
++ *       + di_write_lock_child2()
++ *	   + ii_write_lock_child2()
++ *     + src_parent and parent
++ *       + di_write_lock_parent()
++ *	   + ii_write_lock_parent()
++ *       + di_write_lock_parent2()
++ *	   + ii_write_lock_parent2()
++ *   + lower src_dir and dir by vfsub_lock_rename()
++ *   + verify the every relationships between child and parent. if any
++ *     of them failed, unlock all and return -EBUSY.
++ */
++static void au_ren_unlock(struct au_ren_args *a)
++{
++	vfsub_unlock_rename(a->src_h_parent, a->src_hdir,
++			    a->dst_h_parent, a->dst_hdir);
++	if (au_ftest_ren(a->auren_flags, DIRREN)
++	    && a->h_root)
++		au_hn_inode_unlock(a->h_root);
++	if (au_ftest_ren(a->auren_flags, MNT_WRITE))
++		vfsub_mnt_drop_write(au_br_mnt(a->br));
++}
++
++static int au_ren_lock(struct au_ren_args *a)
++{
++	int err;
++	unsigned int udba;
++
++	err = 0;
++	a->src_h_parent = au_h_dptr(a->src_parent, a->btgt);
++	a->src_hdir = au_hi(a->src_dir, a->btgt);
++	a->dst_h_parent = au_h_dptr(a->dst_parent, a->btgt);
++	a->dst_hdir = au_hi(a->dst_dir, a->btgt);
++
++	err = vfsub_mnt_want_write(au_br_mnt(a->br));
++	if (unlikely(err))
++		goto out;
++	au_fset_ren(a->auren_flags, MNT_WRITE);
++	if (au_ftest_ren(a->auren_flags, DIRREN)) {
++		struct dentry *root;
++		struct inode *dir;
++
++		/*
++		 * sbinfo is already locked, so this ii_read_lock is
++		 * unnecessary. but our debugging feature checks it.
++		 */
++		root = a->src_inode->i_sb->s_root;
++		if (root != a->src_parent && root != a->dst_parent) {
++			dir = d_inode(root);
++			ii_read_lock_parent3(dir);
++			a->h_root = au_hi(dir, a->btgt);
++			ii_read_unlock(dir);
++			au_hn_inode_lock_nested(a->h_root, AuLsc_I_PARENT3);
++		}
++	}
++	a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir,
++				      a->dst_h_parent, a->dst_hdir);
++	udba = au_opt_udba(a->src_dentry->d_sb);
++	if (unlikely(a->src_hdir->hi_inode != d_inode(a->src_h_parent)
++		     || a->dst_hdir->hi_inode != d_inode(a->dst_h_parent)))
++		err = au_busy_or_stale();
++	if (!err && au_dbtop(a->src_dentry) == a->btgt)
++		err = au_h_verify(a->src_h_dentry, udba,
++				  d_inode(a->src_h_parent), a->src_h_parent,
++				  a->br);
++	if (!err && au_dbtop(a->dst_dentry) == a->btgt)
++		err = au_h_verify(a->dst_h_dentry, udba,
++				  d_inode(a->dst_h_parent), a->dst_h_parent,
++				  a->br);
++	if (!err)
++		goto out; /* success */
++
++	err = au_busy_or_stale();
++	au_ren_unlock(a);
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static void au_ren_refresh_dir(struct au_ren_args *a)
++{
++	struct inode *dir;
++
++	dir = a->dst_dir;
++	inode_inc_iversion(dir);
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
++		/* is this updating defined in POSIX? */
++		au_cpup_attr_timesizes(a->src_inode);
++		au_cpup_attr_nlink(dir, /*force*/1);
++	}
++	au_dir_ts(dir, a->btgt);
++
++	if (a->exchange) {
++		dir = a->src_dir;
++		inode_inc_iversion(dir);
++		if (au_ftest_ren(a->auren_flags, ISDIR_DST)) {
++			/* is this updating defined in POSIX? */
++			au_cpup_attr_timesizes(a->dst_inode);
++			au_cpup_attr_nlink(dir, /*force*/1);
++		}
++		au_dir_ts(dir, a->btgt);
++	}
++
++	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
++		return;
++
++	dir = a->src_dir;
++	inode_inc_iversion(dir);
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC))
++		au_cpup_attr_nlink(dir, /*force*/1);
++	au_dir_ts(dir, a->btgt);
++}
++
++static void au_ren_refresh(struct au_ren_args *a)
++{
++	aufs_bindex_t bbot, bindex;
++	struct dentry *d, *h_d;
++	struct inode *i, *h_i;
++	struct super_block *sb;
++
++	d = a->dst_dentry;
++	d_drop(d);
++	if (a->h_dst)
++		/* already dget-ed by au_ren_or_cpup() */
++		au_set_h_dptr(d, a->btgt, a->h_dst);
++
++	i = a->dst_inode;
++	if (i) {
++		if (!a->exchange) {
++			if (!au_ftest_ren(a->auren_flags, ISDIR_DST))
++				vfsub_drop_nlink(i);
++			else {
++				vfsub_dead_dir(i);
++				au_cpup_attr_timesizes(i);
++			}
++			au_update_dbrange(d, /*do_put_zero*/1);
++		} else
++			au_cpup_attr_nlink(i, /*force*/1);
++	} else {
++		bbot = a->btgt;
++		for (bindex = au_dbtop(d); bindex < bbot; bindex++)
++			au_set_h_dptr(d, bindex, NULL);
++		bbot = au_dbbot(d);
++		for (bindex = a->btgt + 1; bindex <= bbot; bindex++)
++			au_set_h_dptr(d, bindex, NULL);
++		au_update_dbrange(d, /*do_put_zero*/0);
++	}
++
++	if (a->exchange
++	    || au_ftest_ren(a->auren_flags, DIRREN)) {
++		d_drop(a->src_dentry);
++		if (au_ftest_ren(a->auren_flags, DIRREN))
++			au_set_dbwh(a->src_dentry, -1);
++		return;
++	}
++
++	d = a->src_dentry;
++	au_set_dbwh(d, -1);
++	bbot = au_dbbot(d);
++	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
++		h_d = au_h_dptr(d, bindex);
++		if (h_d)
++			au_set_h_dptr(d, bindex, NULL);
++	}
++	au_set_dbbot(d, a->btgt);
++
++	sb = d->d_sb;
++	i = a->src_inode;
++	if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i))
++		return; /* success */
++
++	bbot = au_ibbot(i);
++	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
++		h_i = au_h_iptr(i, bindex);
++		if (h_i) {
++			au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0);
++			/* ignore this error */
++			au_set_h_iptr(i, bindex, NULL, 0);
++		}
++	}
++	au_set_ibbot(i, a->btgt);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* mainly for link(2) and rename(2) */
++int au_wbr(struct dentry *dentry, aufs_bindex_t btgt)
++{
++	aufs_bindex_t bdiropq, bwh;
++	struct dentry *parent;
++	struct au_branch *br;
++
++	parent = dentry->d_parent;
++	IMustLock(d_inode(parent)); /* dir is locked */
++
++	bdiropq = au_dbdiropq(parent);
++	bwh = au_dbwh(dentry);
++	br = au_sbr(dentry->d_sb, btgt);
++	if (au_br_rdonly(br)
++	    || (0 <= bdiropq && bdiropq < btgt)
++	    || (0 <= bwh && bwh < btgt))
++		btgt = -1;
++
++	AuDbg("btgt %d\n", btgt);
++	return btgt;
++}
++
++/* sets src_btop, dst_btop and btgt */
++static int au_ren_wbr(struct au_ren_args *a)
++{
++	int err;
++	struct au_wr_dir_args wr_dir_args = {
++		/* .force_btgt	= -1, */
++		.flags		= AuWrDir_ADD_ENTRY
++	};
++
++	a->src_btop = au_dbtop(a->src_dentry);
++	a->dst_btop = au_dbtop(a->dst_dentry);
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    || au_ftest_ren(a->auren_flags, ISDIR_DST))
++		au_fset_wrdir(wr_dir_args.flags, ISDIR);
++	wr_dir_args.force_btgt = a->src_btop;
++	if (a->dst_inode && a->dst_btop < a->src_btop)
++		wr_dir_args.force_btgt = a->dst_btop;
++	wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt);
++	err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args);
++	a->btgt = err;
++	if (a->exchange)
++		au_update_dbtop(a->dst_dentry);
++
++	return err;
++}
++
++static void au_ren_dt(struct au_ren_args *a)
++{
++	a->h_path.dentry = a->src_h_parent;
++	au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path);
++	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) {
++		a->h_path.dentry = a->dst_h_parent;
++		au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path);
++	}
++
++	au_fclr_ren(a->auren_flags, DT_DSTDIR);
++	if (!au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    && !a->exchange)
++		return;
++
++	a->h_path.dentry = a->src_h_dentry;
++	au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path);
++	if (d_is_positive(a->dst_h_dentry)) {
++		au_fset_ren(a->auren_flags, DT_DSTDIR);
++		a->h_path.dentry = a->dst_h_dentry;
++		au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path);
++	}
++}
++
++static void au_ren_rev_dt(int err, struct au_ren_args *a)
++{
++	struct dentry *h_d;
++	struct inode *h_inode;
++
++	au_dtime_revert(a->src_dt + AuPARENT);
++	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR))
++		au_dtime_revert(a->dst_dt + AuPARENT);
++
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) {
++		h_d = a->src_dt[AuCHILD].dt_h_path.dentry;
++		h_inode = d_inode(h_d);
++		inode_lock_nested(h_inode, AuLsc_I_CHILD);
++		au_dtime_revert(a->src_dt + AuCHILD);
++		inode_unlock(h_inode);
++
++		if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) {
++			h_d = a->dst_dt[AuCHILD].dt_h_path.dentry;
++			h_inode = d_inode(h_d);
++			inode_lock_nested(h_inode, AuLsc_I_CHILD);
++			au_dtime_revert(a->dst_dt + AuCHILD);
++			inode_unlock(h_inode);
++		}
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry,
++		struct inode *_dst_dir, struct dentry *_dst_dentry,
++		unsigned int _flags)
++{
++	int err, lock_flags;
++	void *rev;
++	/* reduce stack space */
++	struct au_ren_args *a;
++	struct au_pin pin;
++
++	AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags);
++	IMustLock(_src_dir);
++	IMustLock(_dst_dir);
++
++	err = -EINVAL;
++	if (unlikely(_flags & RENAME_WHITEOUT))
++		goto out;
++
++	err = -ENOMEM;
++	BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE);
++	a = kzalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	a->flags = _flags;
++	BUILD_BUG_ON(sizeof(a->exchange) == sizeof(u8)
++		     && RENAME_EXCHANGE > U8_MAX);
++	a->exchange = _flags & RENAME_EXCHANGE;
++	a->src_dir = _src_dir;
++	a->src_dentry = _src_dentry;
++	a->src_inode = NULL;
++	if (d_really_is_positive(a->src_dentry))
++		a->src_inode = d_inode(a->src_dentry);
++	a->src_parent = a->src_dentry->d_parent; /* dir inode is locked */
++	a->dst_dir = _dst_dir;
++	a->dst_dentry = _dst_dentry;
++	a->dst_inode = NULL;
++	if (d_really_is_positive(a->dst_dentry))
++		a->dst_inode = d_inode(a->dst_dentry);
++	a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */
++	if (a->dst_inode) {
++		/*
++		 * if EXCHANGE && src is non-dir && dst is dir,
++		 * dst is not locked.
++		 */
++		/* IMustLock(a->dst_inode); */
++		au_igrab(a->dst_inode);
++	}
++
++	err = -ENOTDIR;
++	lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN;
++	if (d_is_dir(a->src_dentry)) {
++		au_fset_ren(a->auren_flags, ISDIR_SRC);
++		if (unlikely(!a->exchange
++			     && d_really_is_positive(a->dst_dentry)
++			     && !d_is_dir(a->dst_dentry)))
++			goto out_free;
++		lock_flags |= AuLock_DIRS;
++	}
++	if (a->dst_inode && d_is_dir(a->dst_dentry)) {
++		au_fset_ren(a->auren_flags, ISDIR_DST);
++		if (unlikely(!a->exchange
++			     && d_really_is_positive(a->src_dentry)
++			     && !d_is_dir(a->src_dentry)))
++			goto out_free;
++		lock_flags |= AuLock_DIRS;
++	}
++	err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry,
++					lock_flags);
++	if (unlikely(err))
++		goto out_free;
++
++	err = au_d_hashed_positive(a->src_dentry);
++	if (unlikely(err))
++		goto out_unlock;
++	err = -ENOENT;
++	if (a->dst_inode) {
++		/*
++		 * If it is a dir, VFS unhash it before this
++		 * function. It means we cannot rely upon d_unhashed().
++		 */
++		if (unlikely(!a->dst_inode->i_nlink))
++			goto out_unlock;
++		if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) {
++			err = au_d_hashed_positive(a->dst_dentry);
++			if (unlikely(err && !a->exchange))
++				goto out_unlock;
++		} else if (unlikely(IS_DEADDIR(a->dst_inode)))
++			goto out_unlock;
++	} else if (unlikely(d_unhashed(a->dst_dentry)))
++		goto out_unlock;
++
++	/*
++	 * is it possible?
++	 * yes, it happened (in linux-3.3-rcN) but I don't know why.
++	 * there may exist a problem somewhere else.
++	 */
++	err = -EINVAL;
++	if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry)))
++		goto out_unlock;
++
++	au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */
++	di_write_lock_parent(a->dst_parent);
++
++	/* which branch we process */
++	err = au_ren_wbr(a);
++	if (unlikely(err < 0))
++		goto out_parent;
++	a->br = au_sbr(a->dst_dentry->d_sb, a->btgt);
++	a->h_path.mnt = au_br_mnt(a->br);
++
++	/* are they available to be renamed */
++	err = au_ren_may_dir(a);
++	if (unlikely(err))
++		goto out_children;
++
++	/* prepare the writable parent dir on the same branch */
++	if (a->dst_btop == a->btgt) {
++		au_fset_ren(a->auren_flags, WHDST);
++	} else {
++		err = au_cpup_dirs(a->dst_dentry, a->btgt);
++		if (unlikely(err))
++			goto out_children;
++	}
++
++	err = 0;
++	if (!a->exchange) {
++		if (a->src_dir != a->dst_dir) {
++			/*
++			 * this temporary unlock is safe,
++			 * because both dir->i_mutex are locked.
++			 */
++			di_write_unlock(a->dst_parent);
++			di_write_lock_parent(a->src_parent);
++			err = au_wr_dir_need_wh(a->src_dentry,
++						au_ftest_ren(a->auren_flags,
++							     ISDIR_SRC),
++						&a->btgt);
++			di_write_unlock(a->src_parent);
++			di_write_lock2_parent(a->src_parent, a->dst_parent,
++					      /*isdir*/1);
++			au_fclr_ren(a->auren_flags, ISSAMEDIR);
++		} else
++			err = au_wr_dir_need_wh(a->src_dentry,
++						au_ftest_ren(a->auren_flags,
++							     ISDIR_SRC),
++						&a->btgt);
++	}
++	if (unlikely(err < 0))
++		goto out_children;
++	if (err)
++		au_fset_ren(a->auren_flags, WHSRC);
++
++	/* cpup src */
++	if (a->src_btop != a->btgt) {
++		err = au_pin(&pin, a->src_dentry, a->btgt,
++			     au_opt_udba(a->src_dentry->d_sb),
++			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++		if (!err) {
++			struct au_cp_generic cpg = {
++				.dentry	= a->src_dentry,
++				.bdst	= a->btgt,
++				.bsrc	= a->src_btop,
++				.len	= -1,
++				.pin	= &pin,
++				.flags	= AuCpup_DTIME | AuCpup_HOPEN
++			};
++			AuDebugOn(au_dbtop(a->src_dentry) != a->src_btop);
++			err = au_sio_cpup_simple(&cpg);
++			au_unpin(&pin);
++		}
++		if (unlikely(err))
++			goto out_children;
++		a->src_btop = a->btgt;
++		a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt);
++		if (!a->exchange)
++			au_fset_ren(a->auren_flags, WHSRC);
++	}
++
++	/* cpup dst */
++	if (a->exchange && a->dst_inode
++	    && a->dst_btop != a->btgt) {
++		err = au_pin(&pin, a->dst_dentry, a->btgt,
++			     au_opt_udba(a->dst_dentry->d_sb),
++			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++		if (!err) {
++			struct au_cp_generic cpg = {
++				.dentry	= a->dst_dentry,
++				.bdst	= a->btgt,
++				.bsrc	= a->dst_btop,
++				.len	= -1,
++				.pin	= &pin,
++				.flags	= AuCpup_DTIME | AuCpup_HOPEN
++			};
++			err = au_sio_cpup_simple(&cpg);
++			au_unpin(&pin);
++		}
++		if (unlikely(err))
++			goto out_children;
++		a->dst_btop = a->btgt;
++		a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt);
++	}
++
++	/* lock them all */
++	err = au_ren_lock(a);
++	if (unlikely(err))
++		/* leave the copied-up one */
++		goto out_children;
++
++	if (!a->exchange) {
++		if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE))
++			err = au_may_ren(a);
++		else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN))
++			err = -ENAMETOOLONG;
++		if (unlikely(err))
++			goto out_hdir;
++	}
++
++	/* store timestamps to be revertible */
++	au_ren_dt(a);
++
++	/* store dirren info */
++	if (au_ftest_ren(a->auren_flags, DIRREN)) {
++		err = au_dr_rename(a->src_dentry, a->btgt,
++				   &a->dst_dentry->d_name, &rev);
++		AuTraceErr(err);
++		if (unlikely(err))
++			goto out_dt;
++	}
++
++	/* here we go */
++	err = do_rename(a);
++	if (unlikely(err))
++		goto out_dirren;
++
++	if (au_ftest_ren(a->auren_flags, DIRREN))
++		au_dr_rename_fin(a->src_dentry, a->btgt, rev);
++
++	/* update dir attributes */
++	au_ren_refresh_dir(a);
++
++	/* dput/iput all lower dentries */
++	au_ren_refresh(a);
++
++	goto out_hdir; /* success */
++
++out_dirren:
++	if (au_ftest_ren(a->auren_flags, DIRREN))
++		au_dr_rename_rev(a->src_dentry, a->btgt, rev);
++out_dt:
++	au_ren_rev_dt(err, a);
++out_hdir:
++	au_ren_unlock(a);
++out_children:
++	au_nhash_wh_free(&a->whlist);
++	if (err && a->dst_inode && a->dst_btop != a->btgt) {
++		AuDbg("btop %d, btgt %d\n", a->dst_btop, a->btgt);
++		au_set_h_dptr(a->dst_dentry, a->btgt, NULL);
++		au_set_dbtop(a->dst_dentry, a->dst_btop);
++	}
++out_parent:
++	if (!err) {
++		if (d_unhashed(a->src_dentry))
++			au_fset_ren(a->auren_flags, DROPPED_SRC);
++		if (d_unhashed(a->dst_dentry))
++			au_fset_ren(a->auren_flags, DROPPED_DST);
++		if (!a->exchange)
++			d_move(a->src_dentry, a->dst_dentry);
++		else {
++			d_exchange(a->src_dentry, a->dst_dentry);
++			if (au_ftest_ren(a->auren_flags, DROPPED_DST))
++				d_drop(a->dst_dentry);
++		}
++		if (au_ftest_ren(a->auren_flags, DROPPED_SRC))
++			d_drop(a->src_dentry);
++	} else {
++		au_update_dbtop(a->dst_dentry);
++		if (!a->dst_inode)
++			d_drop(a->dst_dentry);
++	}
++	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
++		di_write_unlock(a->dst_parent);
++	else
++		di_write_unlock2(a->src_parent, a->dst_parent);
++out_unlock:
++	aufs_read_and_write_unlock2(a->dst_dentry, a->src_dentry);
++out_free:
++	iput(a->dst_inode);
++	if (a->thargs)
++		au_whtmp_rmdir_free(a->thargs);
++	au_kfree_rcu(a);
++out:
++	AuTraceErr(err);
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/Kconfig linux-5.4-aufs/fs/aufs/Kconfig
+--- linux-5.4/fs/aufs/Kconfig	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/Kconfig	2019-11-28 01:25:59.062925618 +0200
+@@ -0,0 +1,199 @@
++# SPDX-License-Identifier: GPL-2.0
++config AUFS_FS
++	bool "Aufs (Advanced multi layered unification filesystem) support"
++	help
++	Aufs is a stackable unification filesystem such as Unionfs,
++	which unifies several directories and provides a merged single
++	directory.
++	In the early days, aufs was entirely re-designed and
++	re-implemented Unionfs Version 1.x series. Introducing many
++	original ideas, approaches and improvements, it becomes totally
++	different from Unionfs while keeping the basic features.
++
++if AUFS_FS
++choice
++	prompt "Maximum number of branches"
++	default AUFS_BRANCH_MAX_127
++	help
++	Specifies the maximum number of branches (or member directories)
++	in a single aufs. The larger value consumes more system
++	resources and has a minor impact to performance.
++config AUFS_BRANCH_MAX_127
++	bool "127"
++	help
++	Specifies the maximum number of branches (or member directories)
++	in a single aufs. The larger value consumes more system
++	resources and has a minor impact to performance.
++config AUFS_BRANCH_MAX_511
++	bool "511"
++	help
++	Specifies the maximum number of branches (or member directories)
++	in a single aufs. The larger value consumes more system
++	resources and has a minor impact to performance.
++config AUFS_BRANCH_MAX_1023
++	bool "1023"
++	help
++	Specifies the maximum number of branches (or member directories)
++	in a single aufs. The larger value consumes more system
++	resources and has a minor impact to performance.
++config AUFS_BRANCH_MAX_32767
++	bool "32767"
++	help
++	Specifies the maximum number of branches (or member directories)
++	in a single aufs. The larger value consumes more system
++	resources and has a minor impact to performance.
++endchoice
++
++config AUFS_SBILIST
++	bool
++	depends on AUFS_MAGIC_SYSRQ || PROC_FS
++	default y
++	help
++	Automatic configuration for internal use.
++	When aufs supports Magic SysRq or /proc, enabled automatically.
++
++config AUFS_HNOTIFY
++	bool "Detect direct branch access (bypassing aufs)"
++	help
++	If you want to modify files on branches directly, eg. bypassing aufs,
++	and want aufs to detect the changes of them fully, then enable this
++	option and use 'udba=notify' mount option.
++	Currently there is only one available configuration, "fsnotify".
++	It will have a negative impact to the performance.
++	See detail in aufs.5.
++
++choice
++	prompt "method" if AUFS_HNOTIFY
++	default AUFS_HFSNOTIFY
++config AUFS_HFSNOTIFY
++	bool "fsnotify"
++	select FSNOTIFY
++endchoice
++
++config AUFS_EXPORT
++	bool "NFS-exportable aufs"
++	depends on EXPORTFS = y
++	help
++	If you want to export your mounted aufs via NFS, then enable this
++	option. There are several requirements for this configuration.
++	See detail in aufs.5.
++
++config AUFS_INO_T_64
++	bool
++	depends on AUFS_EXPORT
++	depends on 64BIT && !(ALPHA || S390)
++	default y
++	help
++	Automatic configuration for internal use.
++	/* typedef unsigned long/int __kernel_ino_t */
++	/* alpha and s390x are int */
++
++config AUFS_XATTR
++	bool "support for XATTR/EA (including Security Labels)"
++	help
++	If your branch fs supports XATTR/EA and you want to make them
++	available in aufs too, then enable this opsion and specify the
++	branch attributes for EA.
++	See detail in aufs.5.
++
++config AUFS_FHSM
++	bool "File-based Hierarchical Storage Management"
++	help
++	Hierarchical Storage Management (or HSM) is a well-known feature
++	in the storage world. Aufs provides this feature as file-based.
++	with multiple branches.
++	These multiple branches are prioritized, ie. the topmost one
++	should be the fastest drive and be used heavily.
++
++config AUFS_RDU
++	bool "Readdir in userspace"
++	help
++	Aufs has two methods to provide a merged view for a directory,
++	by a user-space library and by kernel-space natively. The latter
++	is always enabled but sometimes large and slow.
++	If you enable this option, install the library in aufs2-util
++	package, and set some environment variables for your readdir(3),
++	then the work will be handled in user-space which generally
++	shows better performance in most cases.
++	See detail in aufs.5.
++
++config AUFS_DIRREN
++	bool "Workaround for rename(2)-ing a directory"
++	help
++	By default, aufs returns EXDEV error in renameing a dir who has
++	his child on the lower branch, since it is a bad idea to issue
++	rename(2) internally for every lower branch. But user may not
++	accept this behaviour. So here is a workaround to allow such
++	rename(2) and store some extra infromation on the writable
++	branch. Obviously this costs high (and I don't like it).
++	To use this feature, you need to enable this configuration AND
++	to specify the mount option `dirren.'
++	See details in aufs.5 and the design documents.
++
++config AUFS_SHWH
++	bool "Show whiteouts"
++	help
++	If you want to make the whiteouts in aufs visible, then enable
++	this option and specify 'shwh' mount option. Although it may
++	sounds like philosophy or something, but in technically it
++	simply shows the name of whiteout with keeping its behaviour.
++
++config AUFS_BR_RAMFS
++	bool "Ramfs (initramfs/rootfs) as an aufs branch"
++	help
++	If you want to use ramfs as an aufs branch fs, then enable this
++	option. Generally tmpfs is recommended.
++	Aufs prohibited them to be a branch fs by default, because
++	initramfs becomes unusable after switch_root or something
++	generally. If you sets initramfs as an aufs branch and boot your
++	system by switch_root, you will meet a problem easily since the
++	files in initramfs may be inaccessible.
++	Unless you are going to use ramfs as an aufs branch fs without
++	switch_root or something, leave it N.
++
++config AUFS_BR_FUSE
++	bool "Fuse fs as an aufs branch"
++	depends on FUSE_FS
++	select AUFS_POLL
++	help
++	If you want to use fuse-based userspace filesystem as an aufs
++	branch fs, then enable this option.
++	It implements the internal poll(2) operation which is
++	implemented by fuse only (curretnly).
++
++config AUFS_POLL
++	bool
++	help
++	Automatic configuration for internal use.
++
++config AUFS_BR_HFSPLUS
++	bool "Hfsplus as an aufs branch"
++	depends on HFSPLUS_FS
++	default y
++	help
++	If you want to use hfsplus fs as an aufs branch fs, then enable
++	this option. This option introduces a small overhead at
++	copying-up a file on hfsplus.
++
++config AUFS_BDEV_LOOP
++	bool
++	depends on BLK_DEV_LOOP
++	default y
++	help
++	Automatic configuration for internal use.
++	Convert =[ym] into =y.
++
++config AUFS_DEBUG
++	bool "Debug aufs"
++	help
++	Enable this to compile aufs internal debug code.
++	It will have a negative impact to the performance.
++
++config AUFS_MAGIC_SYSRQ
++	bool
++	depends on AUFS_DEBUG && MAGIC_SYSRQ
++	default y
++	help
++	Automatic configuration for internal use.
++	When aufs supports Magic SysRq, enabled automatically.
++endif
+diff -Nurp linux-5.4/fs/aufs/lcnt.h linux-5.4-aufs/fs/aufs/lcnt.h
+--- linux-5.4/fs/aufs/lcnt.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/lcnt.h	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,173 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2018-2019 Junjiro R. Okajima
++ */
++
++/*
++ * simple long counter wrapper
++ */
++
++#ifndef __AUFS_LCNT_H__
++#define __AUFS_LCNT_H__
++
++#ifdef __KERNEL__
++
++#include "debug.h"
++
++#define AuLCntATOMIC	1
++#define AuLCntPCPUCNT	2
++/*
++ * why does percpu_refcount require extra synchronize_rcu()s in
++ * au_br_do_free()
++ */
++#define AuLCntPCPUREF	3
++
++/* #define AuLCntChosen	AuLCntATOMIC */
++#define AuLCntChosen	AuLCntPCPUCNT
++/* #define AuLCntChosen	AuLCntPCPUREF */
++
++#if AuLCntChosen == AuLCntATOMIC
++#include <linux/atomic.h>
++
++typedef atomic_long_t au_lcnt_t;
++
++static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
++{
++	atomic_long_set(cnt, 0);
++	return 0;
++}
++
++static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
++{
++	/* empty */
++}
++
++static inline void au_lcnt_fin(au_lcnt_t *cnt __maybe_unused,
++			       int do_sync __maybe_unused)
++{
++	/* empty */
++}
++
++static inline void au_lcnt_inc(au_lcnt_t *cnt)
++{
++	atomic_long_inc(cnt);
++}
++
++static inline void au_lcnt_dec(au_lcnt_t *cnt)
++{
++	atomic_long_dec(cnt);
++}
++
++static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
++{
++	return atomic_long_read(cnt);
++}
++#endif
++
++#if AuLCntChosen == AuLCntPCPUCNT
++#include <linux/percpu_counter.h>
++
++typedef struct percpu_counter au_lcnt_t;
++
++static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
++{
++	return percpu_counter_init(cnt, 0, GFP_NOFS);
++}
++
++static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
++{
++	/* empty */
++}
++
++static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync __maybe_unused)
++{
++	percpu_counter_destroy(cnt);
++}
++
++static inline void au_lcnt_inc(au_lcnt_t *cnt)
++{
++	percpu_counter_inc(cnt);
++}
++
++static inline void au_lcnt_dec(au_lcnt_t *cnt)
++{
++	percpu_counter_dec(cnt);
++}
++
++static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
++{
++	s64 n;
++
++	n = percpu_counter_sum(cnt);
++	BUG_ON(n < 0);
++	if (LONG_MAX != LLONG_MAX
++	    && n > LONG_MAX)
++		AuWarn1("%s\n", "wrap-around");
++
++	return n;
++}
++#endif
++
++#if AuLCntChosen == AuLCntPCPUREF
++#include <linux/percpu-refcount.h>
++
++typedef struct percpu_ref au_lcnt_t;
++
++static inline int au_lcnt_init(au_lcnt_t *cnt, percpu_ref_func_t *release)
++{
++	if (!release)
++		release = percpu_ref_exit;
++	return percpu_ref_init(cnt, release, /*percpu mode*/0, GFP_NOFS);
++}
++
++static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
++{
++	synchronize_rcu();
++}
++
++static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync)
++{
++	percpu_ref_kill(cnt);
++	if (do_sync)
++		au_lcnt_wait_for_fin(cnt);
++}
++
++static inline void au_lcnt_inc(au_lcnt_t *cnt)
++{
++	percpu_ref_get(cnt);
++}
++
++static inline void au_lcnt_dec(au_lcnt_t *cnt)
++{
++	percpu_ref_put(cnt);
++}
++
++/*
++ * avoid calling this func as possible.
++ */
++static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev)
++{
++	long l;
++
++	percpu_ref_switch_to_atomic_sync(cnt);
++	l = atomic_long_read(&cnt->count);
++	if (do_rev)
++		percpu_ref_switch_to_percpu(cnt);
++
++	/* percpu_ref is initialized by 1 instead of 0 */
++	return l - 1;
++}
++#endif
++
++#ifdef CONFIG_AUFS_DEBUG
++#define AuLCntZero(val) do {			\
++	long l = val;				\
++	if (l)					\
++		AuDbg("%s = %ld\n", #val, l);	\
++} while (0)
++#else
++#define AuLCntZero(val)		do {} while (0)
++#endif
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_LCNT_H__ */
+diff -Nurp linux-5.4/fs/aufs/loop.c linux-5.4-aufs/fs/aufs/loop.c
+--- linux-5.4/fs/aufs/loop.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/loop.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,135 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * support for loopback block device as a branch
++ */
++
++#include "aufs.h"
++
++/* added into drivers/block/loop.c */
++static struct file *(*backing_file_func)(struct super_block *sb);
++
++/*
++ * test if two lower dentries have overlapping branches.
++ */
++int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding)
++{
++	struct super_block *h_sb;
++	struct file *backing_file;
++
++	if (unlikely(!backing_file_func)) {
++		/* don't load "loop" module here */
++		backing_file_func = symbol_get(loop_backing_file);
++		if (unlikely(!backing_file_func))
++			/* "loop" module is not loaded */
++			return 0;
++	}
++
++	h_sb = h_adding->d_sb;
++	backing_file = backing_file_func(h_sb);
++	if (!backing_file)
++		return 0;
++
++	h_adding = backing_file->f_path.dentry;
++	/*
++	 * h_adding can be local NFS.
++	 * in this case aufs cannot detect the loop.
++	 */
++	if (unlikely(h_adding->d_sb == sb))
++		return 1;
++	return !!au_test_subdir(h_adding, sb->s_root);
++}
++
++/* true if a kernel thread named 'loop[0-9].*' accesses a file */
++int au_test_loopback_kthread(void)
++{
++	int ret;
++	struct task_struct *tsk = current;
++	char c, comm[sizeof(tsk->comm)];
++
++	ret = 0;
++	if (tsk->flags & PF_KTHREAD) {
++		get_task_comm(comm, tsk);
++		c = comm[4];
++		ret = ('0' <= c && c <= '9'
++		       && !strncmp(comm, "loop", 4));
++	}
++
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define au_warn_loopback_step	16
++static int au_warn_loopback_nelem = au_warn_loopback_step;
++static unsigned long *au_warn_loopback_array;
++
++void au_warn_loopback(struct super_block *h_sb)
++{
++	int i, new_nelem;
++	unsigned long *a, magic;
++	static DEFINE_SPINLOCK(spin);
++
++	magic = h_sb->s_magic;
++	spin_lock(&spin);
++	a = au_warn_loopback_array;
++	for (i = 0; i < au_warn_loopback_nelem && *a; i++)
++		if (a[i] == magic) {
++			spin_unlock(&spin);
++			return;
++		}
++
++	/* h_sb is new to us, print it */
++	if (i < au_warn_loopback_nelem) {
++		a[i] = magic;
++		goto pr;
++	}
++
++	/* expand the array */
++	new_nelem = au_warn_loopback_nelem + au_warn_loopback_step;
++	a = au_kzrealloc(au_warn_loopback_array,
++			 au_warn_loopback_nelem * sizeof(unsigned long),
++			 new_nelem * sizeof(unsigned long), GFP_ATOMIC,
++			 /*may_shrink*/0);
++	if (a) {
++		au_warn_loopback_nelem = new_nelem;
++		au_warn_loopback_array = a;
++		a[i] = magic;
++		goto pr;
++	}
++
++	spin_unlock(&spin);
++	AuWarn1("realloc failed, ignored\n");
++	return;
++
++pr:
++	spin_unlock(&spin);
++	pr_warn("you may want to try another patch for loopback file "
++		"on %s(0x%lx) branch\n", au_sbtype(h_sb), magic);
++}
++
++int au_loopback_init(void)
++{
++	int err;
++	struct super_block *sb __maybe_unused;
++
++	BUILD_BUG_ON(sizeof(sb->s_magic) != sizeof(*au_warn_loopback_array));
++
++	err = 0;
++	au_warn_loopback_array = kcalloc(au_warn_loopback_step,
++					 sizeof(unsigned long), GFP_NOFS);
++	if (unlikely(!au_warn_loopback_array))
++		err = -ENOMEM;
++
++	return err;
++}
++
++void au_loopback_fin(void)
++{
++	if (backing_file_func)
++		symbol_put(loop_backing_file);
++	au_kfree_try_rcu(au_warn_loopback_array);
++}
+diff -Nurp linux-5.4/fs/aufs/loop.h linux-5.4-aufs/fs/aufs/loop.h
+--- linux-5.4/fs/aufs/loop.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/loop.h	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,42 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * support for loopback mount as a branch
++ */
++
++#ifndef __AUFS_LOOP_H__
++#define __AUFS_LOOP_H__
++
++#ifdef __KERNEL__
++
++struct dentry;
++struct super_block;
++
++#ifdef CONFIG_AUFS_BDEV_LOOP
++/* drivers/block/loop.c */
++struct file *loop_backing_file(struct super_block *sb);
++
++/* loop.c */
++int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding);
++int au_test_loopback_kthread(void);
++void au_warn_loopback(struct super_block *h_sb);
++
++int au_loopback_init(void);
++void au_loopback_fin(void);
++#else
++AuStub(struct file *, loop_backing_file, return NULL, struct super_block *sb)
++
++AuStubInt0(au_test_loopback_overlap, struct super_block *sb,
++	   struct dentry *h_adding)
++AuStubInt0(au_test_loopback_kthread, void)
++AuStubVoid(au_warn_loopback, struct super_block *h_sb)
++
++AuStubInt0(au_loopback_init, void)
++AuStubVoid(au_loopback_fin, void)
++#endif /* BLK_DEV_LOOP */
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_LOOP_H__ */
+diff -Nurp linux-5.4/fs/aufs/magic.mk linux-5.4-aufs/fs/aufs/magic.mk
+--- linux-5.4/fs/aufs/magic.mk	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/magic.mk	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,31 @@
++# SPDX-License-Identifier: GPL-2.0
++
++# defined in ${srctree}/fs/fuse/inode.c
++# tristate
++ifdef CONFIG_FUSE_FS
++ccflags-y += -DFUSE_SUPER_MAGIC=0x65735546
++endif
++
++# defined in ${srctree}/fs/xfs/xfs_sb.h
++# tristate
++ifdef CONFIG_XFS_FS
++ccflags-y += -DXFS_SB_MAGIC=0x58465342
++endif
++
++# defined in ${srctree}/fs/configfs/mount.c
++# tristate
++ifdef CONFIG_CONFIGFS_FS
++ccflags-y += -DCONFIGFS_MAGIC=0x62656570
++endif
++
++# defined in ${srctree}/fs/ubifs/ubifs.h
++# tristate
++ifdef CONFIG_UBIFS_FS
++ccflags-y += -DUBIFS_SUPER_MAGIC=0x24051905
++endif
++
++# defined in ${srctree}/fs/hfsplus/hfsplus_raw.h
++# tristate
++ifdef CONFIG_HFSPLUS_FS
++ccflags-y += -DHFSPLUS_SUPER_MAGIC=0x482b
++endif
+diff -Nurp linux-5.4/fs/aufs/Makefile linux-5.4-aufs/fs/aufs/Makefile
+--- linux-5.4/fs/aufs/Makefile	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/Makefile	2019-11-28 01:25:59.062925618 +0200
+@@ -0,0 +1,39 @@
++# SPDX-License-Identifier: GPL-2.0
++
++include ${srctree}/${src}/magic.mk
++-include ${srctree}/${src}/priv_def.mk
++
++# cf. include/linux/kernel.h
++# enable pr_debug
++ccflags-y += -DDEBUG
++# sparse requires the full pathname
++ccflags-y += -include ${srctree}/include/uapi/linux/aufs_type.h
++
++obj-$(CONFIG_AUFS_FS) += aufs.o
++aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o \
++	wkq.o vfsub.o dcsub.o \
++	cpup.o whout.o wbr_policy.o \
++	dinfo.o dentry.o \
++	dynop.o \
++	finfo.o file.o f_op.o \
++	dir.o vdir.o \
++	iinfo.o inode.o i_op.o i_op_add.o i_op_del.o i_op_ren.o \
++	mvdown.o ioctl.o
++
++# all are boolean
++aufs-$(CONFIG_PROC_FS) += procfs.o plink.o
++aufs-$(CONFIG_SYSFS) += sysfs.o
++aufs-$(CONFIG_DEBUG_FS) += dbgaufs.o
++aufs-$(CONFIG_AUFS_BDEV_LOOP) += loop.o
++aufs-$(CONFIG_AUFS_HNOTIFY) += hnotify.o
++aufs-$(CONFIG_AUFS_HFSNOTIFY) += hfsnotify.o
++aufs-$(CONFIG_AUFS_EXPORT) += export.o
++aufs-$(CONFIG_AUFS_XATTR) += xattr.o
++aufs-$(CONFIG_FS_POSIX_ACL) += posix_acl.o
++aufs-$(CONFIG_AUFS_DIRREN) += dirren.o
++aufs-$(CONFIG_AUFS_FHSM) += fhsm.o
++aufs-$(CONFIG_AUFS_POLL) += poll.o
++aufs-$(CONFIG_AUFS_RDU) += rdu.o
++aufs-$(CONFIG_AUFS_BR_HFSPLUS) += hfsplus.o
++aufs-$(CONFIG_AUFS_DEBUG) += debug.o
++aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o
+diff -Nurp linux-5.4/fs/aufs/module.c linux-5.4-aufs/fs/aufs/module.c
+--- linux-5.4/fs/aufs/module.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/module.c	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,259 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * module global variables and operations
++ */
++
++#include <linux/module.h>
++#include <linux/seq_file.h>
++#include "aufs.h"
++
++/* shrinkable realloc */
++void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink)
++{
++	size_t sz;
++	int diff;
++
++	sz = 0;
++	diff = -1;
++	if (p) {
++#if 0 /* unused */
++		if (!new_sz) {
++			au_kfree_rcu(p);
++			p = NULL;
++			goto out;
++		}
++#else
++		AuDebugOn(!new_sz);
++#endif
++		sz = ksize(p);
++		diff = au_kmidx_sub(sz, new_sz);
++	}
++	if (sz && !diff)
++		goto out;
++
++	if (sz < new_sz)
++		/* expand or SLOB */
++		p = krealloc(p, new_sz, gfp);
++	else if (new_sz < sz && may_shrink) {
++		/* shrink */
++		void *q;
++
++		q = kmalloc(new_sz, gfp);
++		if (q) {
++			if (p) {
++				memcpy(q, p, new_sz);
++				au_kfree_try_rcu(p);
++			}
++			p = q;
++		} else
++			p = NULL;
++	}
++
++out:
++	return p;
++}
++
++void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
++		   int may_shrink)
++{
++	p = au_krealloc(p, new_sz, gfp, may_shrink);
++	if (p && new_sz > nused)
++		memset(p + nused, 0, new_sz - nused);
++	return p;
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * aufs caches
++ */
++struct kmem_cache *au_cache[AuCache_Last];
++
++static void au_cache_fin(void)
++{
++	int i;
++
++	/*
++	 * Make sure all delayed rcu free inodes are flushed before we
++	 * destroy cache.
++	 */
++	rcu_barrier();
++
++	/* excluding AuCache_HNOTIFY */
++	BUILD_BUG_ON(AuCache_HNOTIFY + 1 != AuCache_Last);
++	for (i = 0; i < AuCache_HNOTIFY; i++) {
++		kmem_cache_destroy(au_cache[i]);
++		au_cache[i] = NULL;
++	}
++}
++
++static int __init au_cache_init(void)
++{
++	au_cache[AuCache_DINFO] = AuCacheCtor(au_dinfo, au_di_init_once);
++	if (au_cache[AuCache_DINFO])
++		/* SLAB_DESTROY_BY_RCU */
++		au_cache[AuCache_ICNTNR] = AuCacheCtor(au_icntnr,
++						       au_icntnr_init_once);
++	if (au_cache[AuCache_ICNTNR])
++		au_cache[AuCache_FINFO] = AuCacheCtor(au_finfo,
++						      au_fi_init_once);
++	if (au_cache[AuCache_FINFO])
++		au_cache[AuCache_VDIR] = AuCache(au_vdir);
++	if (au_cache[AuCache_VDIR])
++		au_cache[AuCache_DEHSTR] = AuCache(au_vdir_dehstr);
++	if (au_cache[AuCache_DEHSTR])
++		return 0;
++
++	au_cache_fin();
++	return -ENOMEM;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_dir_roflags;
++
++#ifdef CONFIG_AUFS_SBILIST
++/*
++ * iterate_supers_type() doesn't protect us from
++ * remounting (branch management)
++ */
++struct hlist_bl_head au_sbilist;
++#endif
++
++/*
++ * functions for module interface.
++ */
++MODULE_LICENSE("GPL");
++/* MODULE_LICENSE("GPL v2"); */
++MODULE_AUTHOR("Junjiro R. Okajima <aufs-users@lists.sourceforge.net>");
++MODULE_DESCRIPTION(AUFS_NAME
++	" -- Advanced multi layered unification filesystem");
++MODULE_VERSION(AUFS_VERSION);
++
++/* this module parameter has no meaning when SYSFS is disabled */
++int sysaufs_brs = 1;
++MODULE_PARM_DESC(brs, "use <sysfs>/fs/aufs/si_*/brN");
++module_param_named(brs, sysaufs_brs, int, 0444);
++
++/* this module parameter has no meaning when USER_NS is disabled */
++bool au_userns;
++MODULE_PARM_DESC(allow_userns, "allow unprivileged to mount under userns");
++module_param_named(allow_userns, au_userns, bool, 0444);
++
++/* ---------------------------------------------------------------------- */
++
++static char au_esc_chars[0x20 + 3]; /* 0x01-0x20, backslash, del, and NULL */
++
++int au_seq_path(struct seq_file *seq, struct path *path)
++{
++	int err;
++
++	err = seq_path(seq, path, au_esc_chars);
++	if (err >= 0)
++		err = 0;
++	else
++		err = -ENOMEM;
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int __init aufs_init(void)
++{
++	int err, i;
++	char *p;
++
++	p = au_esc_chars;
++	for (i = 1; i <= ' '; i++)
++		*p++ = i;
++	*p++ = '\\';
++	*p++ = '\x7f';
++	*p = 0;
++
++	au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE);
++
++	memcpy(aufs_iop_nogetattr, aufs_iop, sizeof(aufs_iop));
++	for (i = 0; i < AuIop_Last; i++)
++		aufs_iop_nogetattr[i].getattr = NULL;
++
++	memset(au_cache, 0, sizeof(au_cache));	/* including hnotify */
++
++	au_sbilist_init();
++	sysaufs_brs_init();
++	au_debug_init();
++	au_dy_init();
++	err = sysaufs_init();
++	if (unlikely(err))
++		goto out;
++	err = dbgaufs_init();
++	if (unlikely(err))
++		goto out_sysaufs;
++	err = au_procfs_init();
++	if (unlikely(err))
++		goto out_dbgaufs;
++	err = au_wkq_init();
++	if (unlikely(err))
++		goto out_procfs;
++	err = au_loopback_init();
++	if (unlikely(err))
++		goto out_wkq;
++	err = au_hnotify_init();
++	if (unlikely(err))
++		goto out_loopback;
++	err = au_sysrq_init();
++	if (unlikely(err))
++		goto out_hin;
++	err = au_cache_init();
++	if (unlikely(err))
++		goto out_sysrq;
++
++	aufs_fs_type.fs_flags |= au_userns ? FS_USERNS_MOUNT : 0;
++	err = register_filesystem(&aufs_fs_type);
++	if (unlikely(err))
++		goto out_cache;
++
++	/* since we define pr_fmt, call printk directly */
++	printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n");
++	goto out; /* success */
++
++out_cache:
++	au_cache_fin();
++out_sysrq:
++	au_sysrq_fin();
++out_hin:
++	au_hnotify_fin();
++out_loopback:
++	au_loopback_fin();
++out_wkq:
++	au_wkq_fin();
++out_procfs:
++	au_procfs_fin();
++out_dbgaufs:
++	dbgaufs_fin();
++out_sysaufs:
++	sysaufs_fin();
++	au_dy_fin();
++out:
++	return err;
++}
++
++static void __exit aufs_exit(void)
++{
++	unregister_filesystem(&aufs_fs_type);
++	au_cache_fin();
++	au_sysrq_fin();
++	au_hnotify_fin();
++	au_loopback_fin();
++	au_wkq_fin();
++	au_procfs_fin();
++	dbgaufs_fin();
++	sysaufs_fin();
++	au_dy_fin();
++}
++
++module_init(aufs_init);
++module_exit(aufs_exit);
+diff -Nurp linux-5.4/fs/aufs/module.h linux-5.4-aufs/fs/aufs/module.h
+--- linux-5.4/fs/aufs/module.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/module.h	2019-11-28 01:25:59.066925618 +0200
+@@ -0,0 +1,153 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * module initialization and module-global
++ */
++
++#ifndef __AUFS_MODULE_H__
++#define __AUFS_MODULE_H__
++
++#ifdef __KERNEL__
++
++#include <linux/slab.h>
++#include "debug.h"
++#include "dentry.h"
++#include "dir.h"
++#include "file.h"
++#include "inode.h"
++
++struct path;
++struct seq_file;
++
++/* module parameters */
++extern int sysaufs_brs;
++extern bool au_userns;
++
++/* ---------------------------------------------------------------------- */
++
++extern int au_dir_roflags;
++
++void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink);
++void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
++		   int may_shrink);
++
++/*
++ * Comparing the size of the object with sizeof(struct rcu_head)
++ * case 1: object is always larger
++ *	--> au_kfree_rcu() or au_kfree_do_rcu()
++ * case 2: object is always smaller
++ *	--> au_kfree_small()
++ * case 3: object can be any size
++ *	--> au_kfree_try_rcu()
++ */
++
++static inline void au_kfree_do_rcu(const void *p)
++{
++	struct {
++		struct rcu_head rcu;
++	} *a = (void *)p;
++
++	kfree_rcu(a, rcu);
++}
++
++#define au_kfree_rcu(_p) do {						\
++		typeof(_p) p = (_p);					\
++		BUILD_BUG_ON(sizeof(*p) < sizeof(struct rcu_head));	\
++		if (p)							\
++			au_kfree_do_rcu(p);				\
++	} while (0)
++
++#define au_kfree_do_sz_test(sz)	(sz >= sizeof(struct rcu_head))
++#define au_kfree_sz_test(p)	(p && au_kfree_do_sz_test(ksize(p)))
++
++static inline void au_kfree_try_rcu(const void *p)
++{
++	if (!p)
++		return;
++	if (au_kfree_sz_test(p))
++		au_kfree_do_rcu(p);
++	else
++		kfree(p);
++}
++
++static inline void au_kfree_small(const void *p)
++{
++	if (!p)
++		return;
++	AuDebugOn(au_kfree_sz_test(p));
++	kfree(p);
++}
++
++static inline int au_kmidx_sub(size_t sz, size_t new_sz)
++{
++#ifndef CONFIG_SLOB
++	return kmalloc_index(sz) - kmalloc_index(new_sz);
++#else
++	return -1; /* SLOB is untested */
++#endif
++}
++
++int au_seq_path(struct seq_file *seq, struct path *path);
++
++#ifdef CONFIG_PROC_FS
++/* procfs.c */
++int __init au_procfs_init(void);
++void au_procfs_fin(void);
++#else
++AuStubInt0(au_procfs_init, void);
++AuStubVoid(au_procfs_fin, void);
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++/* kmem cache */
++enum {
++	AuCache_DINFO,
++	AuCache_ICNTNR,
++	AuCache_FINFO,
++	AuCache_VDIR,
++	AuCache_DEHSTR,
++	AuCache_HNOTIFY, /* must be last */
++	AuCache_Last
++};
++
++extern struct kmem_cache *au_cache[AuCache_Last];
++
++#define AuCacheFlags		(SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
++#define AuCache(type)		KMEM_CACHE(type, AuCacheFlags)
++#define AuCacheCtor(type, ctor)	\
++	kmem_cache_create(#type, sizeof(struct type), \
++			  __alignof__(struct type), AuCacheFlags, ctor)
++
++#define AuCacheFuncs(name, index)					\
++	static inline struct au_##name *au_cache_alloc_##name(void)	\
++	{ return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \
++	static inline void au_cache_free_##name##_norcu(struct au_##name *p) \
++	{ kmem_cache_free(au_cache[AuCache_##index], p); }		\
++									\
++	static inline void au_cache_free_##name##_rcu_cb(struct rcu_head *rcu) \
++	{ void *p = rcu;						\
++		p -= offsetof(struct au_##name, rcu);			\
++		kmem_cache_free(au_cache[AuCache_##index], p); }	\
++	static inline void au_cache_free_##name##_rcu(struct au_##name *p) \
++	{ BUILD_BUG_ON(sizeof(struct au_##name) < sizeof(struct rcu_head)); \
++		call_rcu(&p->rcu, au_cache_free_##name##_rcu_cb); }	\
++									\
++	static inline void au_cache_free_##name(struct au_##name *p)	\
++	{ /* au_cache_free_##name##_norcu(p); */			\
++		au_cache_free_##name##_rcu(p); }
++
++AuCacheFuncs(dinfo, DINFO);
++AuCacheFuncs(icntnr, ICNTNR);
++AuCacheFuncs(finfo, FINFO);
++AuCacheFuncs(vdir, VDIR);
++AuCacheFuncs(vdir_dehstr, DEHSTR);
++#ifdef CONFIG_AUFS_HNOTIFY
++AuCacheFuncs(hnotify, HNOTIFY);
++#endif
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_MODULE_H__ */
+diff -Nurp linux-5.4/fs/aufs/mvdown.c linux-5.4-aufs/fs/aufs/mvdown.c
+--- linux-5.4/fs/aufs/mvdown.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/mvdown.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,693 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2011-2019 Junjiro R. Okajima
++ */
++
++/*
++ * move-down, opposite of copy-up
++ */
++
++#include "aufs.h"
++
++struct au_mvd_args {
++	struct {
++		struct super_block *h_sb;
++		struct dentry *h_parent;
++		struct au_hinode *hdir;
++		struct inode *h_dir, *h_inode;
++		struct au_pin pin;
++	} info[AUFS_MVDOWN_NARRAY];
++
++	struct aufs_mvdown mvdown;
++	struct dentry *dentry, *parent;
++	struct inode *inode, *dir;
++	struct super_block *sb;
++	aufs_bindex_t bopq, bwh, bfound;
++	unsigned char rename_lock;
++};
++
++#define mvd_errno		mvdown.au_errno
++#define mvd_bsrc		mvdown.stbr[AUFS_MVDOWN_UPPER].bindex
++#define mvd_src_brid		mvdown.stbr[AUFS_MVDOWN_UPPER].brid
++#define mvd_bdst		mvdown.stbr[AUFS_MVDOWN_LOWER].bindex
++#define mvd_dst_brid		mvdown.stbr[AUFS_MVDOWN_LOWER].brid
++
++#define mvd_h_src_sb		info[AUFS_MVDOWN_UPPER].h_sb
++#define mvd_h_src_parent	info[AUFS_MVDOWN_UPPER].h_parent
++#define mvd_hdir_src		info[AUFS_MVDOWN_UPPER].hdir
++#define mvd_h_src_dir		info[AUFS_MVDOWN_UPPER].h_dir
++#define mvd_h_src_inode		info[AUFS_MVDOWN_UPPER].h_inode
++#define mvd_pin_src		info[AUFS_MVDOWN_UPPER].pin
++
++#define mvd_h_dst_sb		info[AUFS_MVDOWN_LOWER].h_sb
++#define mvd_h_dst_parent	info[AUFS_MVDOWN_LOWER].h_parent
++#define mvd_hdir_dst		info[AUFS_MVDOWN_LOWER].hdir
++#define mvd_h_dst_dir		info[AUFS_MVDOWN_LOWER].h_dir
++#define mvd_h_dst_inode		info[AUFS_MVDOWN_LOWER].h_inode
++#define mvd_pin_dst		info[AUFS_MVDOWN_LOWER].pin
++
++#define AU_MVD_PR(flag, ...) do {			\
++		if (flag)				\
++			pr_err(__VA_ARGS__);		\
++	} while (0)
++
++static int find_lower_writable(struct au_mvd_args *a)
++{
++	struct super_block *sb;
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	sb = a->sb;
++	bindex = a->mvd_bsrc;
++	bbot = au_sbbot(sb);
++	if (a->mvdown.flags & AUFS_MVDOWN_FHSM_LOWER)
++		for (bindex++; bindex <= bbot; bindex++) {
++			br = au_sbr(sb, bindex);
++			if (au_br_fhsm(br->br_perm)
++			    && !sb_rdonly(au_br_sb(br)))
++				return bindex;
++		}
++	else if (!(a->mvdown.flags & AUFS_MVDOWN_ROLOWER))
++		for (bindex++; bindex <= bbot; bindex++) {
++			br = au_sbr(sb, bindex);
++			if (!au_br_rdonly(br))
++				return bindex;
++		}
++	else
++		for (bindex++; bindex <= bbot; bindex++) {
++			br = au_sbr(sb, bindex);
++			if (!sb_rdonly(au_br_sb(br))) {
++				if (au_br_rdonly(br))
++					a->mvdown.flags
++						|= AUFS_MVDOWN_ROLOWER_R;
++				return bindex;
++			}
++		}
++
++	return -1;
++}
++
++/* make the parent dir on bdst */
++static int au_do_mkdir(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++
++	err = 0;
++	a->mvd_hdir_src = au_hi(a->dir, a->mvd_bsrc);
++	a->mvd_hdir_dst = au_hi(a->dir, a->mvd_bdst);
++	a->mvd_h_src_parent = au_h_dptr(a->parent, a->mvd_bsrc);
++	a->mvd_h_dst_parent = NULL;
++	if (au_dbbot(a->parent) >= a->mvd_bdst)
++		a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
++	if (!a->mvd_h_dst_parent) {
++		err = au_cpdown_dirs(a->dentry, a->mvd_bdst);
++		if (unlikely(err)) {
++			AU_MVD_PR(dmsg, "cpdown_dirs failed\n");
++			goto out;
++		}
++		a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* lock them all */
++static int au_do_lock(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct dentry *h_trap;
++
++	a->mvd_h_src_sb = au_sbr_sb(a->sb, a->mvd_bsrc);
++	a->mvd_h_dst_sb = au_sbr_sb(a->sb, a->mvd_bdst);
++	err = au_pin(&a->mvd_pin_dst, a->dentry, a->mvd_bdst,
++		     au_opt_udba(a->sb),
++		     AuPin_MNT_WRITE | AuPin_DI_LOCKED);
++	AuTraceErr(err);
++	if (unlikely(err)) {
++		AU_MVD_PR(dmsg, "pin_dst failed\n");
++		goto out;
++	}
++
++	if (a->mvd_h_src_sb != a->mvd_h_dst_sb) {
++		a->rename_lock = 0;
++		au_pin_init(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
++			    AuLsc_DI_PARENT, AuLsc_I_PARENT3,
++			    au_opt_udba(a->sb),
++			    AuPin_MNT_WRITE | AuPin_DI_LOCKED);
++		err = au_do_pin(&a->mvd_pin_src);
++		AuTraceErr(err);
++		a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
++		if (unlikely(err)) {
++			AU_MVD_PR(dmsg, "pin_src failed\n");
++			goto out_dst;
++		}
++		goto out; /* success */
++	}
++
++	a->rename_lock = 1;
++	au_pin_hdir_unlock(&a->mvd_pin_dst);
++	err = au_pin(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
++		     au_opt_udba(a->sb),
++		     AuPin_MNT_WRITE | AuPin_DI_LOCKED);
++	AuTraceErr(err);
++	a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
++	if (unlikely(err)) {
++		AU_MVD_PR(dmsg, "pin_src failed\n");
++		au_pin_hdir_lock(&a->mvd_pin_dst);
++		goto out_dst;
++	}
++	au_pin_hdir_unlock(&a->mvd_pin_src);
++	h_trap = vfsub_lock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
++				   a->mvd_h_dst_parent, a->mvd_hdir_dst);
++	if (h_trap) {
++		err = (h_trap != a->mvd_h_src_parent);
++		if (err)
++			err = (h_trap != a->mvd_h_dst_parent);
++	}
++	BUG_ON(err); /* it should never happen */
++	if (unlikely(a->mvd_h_src_dir != au_pinned_h_dir(&a->mvd_pin_src))) {
++		err = -EBUSY;
++		AuTraceErr(err);
++		vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
++				    a->mvd_h_dst_parent, a->mvd_hdir_dst);
++		au_pin_hdir_lock(&a->mvd_pin_src);
++		au_unpin(&a->mvd_pin_src);
++		au_pin_hdir_lock(&a->mvd_pin_dst);
++		goto out_dst;
++	}
++	goto out; /* success */
++
++out_dst:
++	au_unpin(&a->mvd_pin_dst);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static void au_do_unlock(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	if (!a->rename_lock)
++		au_unpin(&a->mvd_pin_src);
++	else {
++		vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
++				    a->mvd_h_dst_parent, a->mvd_hdir_dst);
++		au_pin_hdir_lock(&a->mvd_pin_src);
++		au_unpin(&a->mvd_pin_src);
++		au_pin_hdir_lock(&a->mvd_pin_dst);
++	}
++	au_unpin(&a->mvd_pin_dst);
++}
++
++/* copy-down the file */
++static int au_do_cpdown(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct au_cp_generic cpg = {
++		.dentry	= a->dentry,
++		.bdst	= a->mvd_bdst,
++		.bsrc	= a->mvd_bsrc,
++		.len	= -1,
++		.pin	= &a->mvd_pin_dst,
++		.flags	= AuCpup_DTIME | AuCpup_HOPEN
++	};
++
++	AuDbg("b%d, b%d\n", cpg.bsrc, cpg.bdst);
++	if (a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
++		au_fset_cpup(cpg.flags, OVERWRITE);
++	if (a->mvdown.flags & AUFS_MVDOWN_ROLOWER)
++		au_fset_cpup(cpg.flags, RWDST);
++	err = au_sio_cpdown_simple(&cpg);
++	if (unlikely(err))
++		AU_MVD_PR(dmsg, "cpdown failed\n");
++
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * unlink the whiteout on bdst if exist which may be created by UDBA while we
++ * were sleeping
++ */
++static int au_do_unlink_wh(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct path h_path;
++	struct au_branch *br;
++	struct inode *delegated;
++
++	br = au_sbr(a->sb, a->mvd_bdst);
++	h_path.dentry = au_wh_lkup(a->mvd_h_dst_parent, &a->dentry->d_name, br);
++	err = PTR_ERR(h_path.dentry);
++	if (IS_ERR(h_path.dentry)) {
++		AU_MVD_PR(dmsg, "wh_lkup failed\n");
++		goto out;
++	}
++
++	err = 0;
++	if (d_is_positive(h_path.dentry)) {
++		h_path.mnt = au_br_mnt(br);
++		delegated = NULL;
++		err = vfsub_unlink(d_inode(a->mvd_h_dst_parent), &h_path,
++				   &delegated, /*force*/0);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal unlink\n");
++			iput(delegated);
++		}
++		if (unlikely(err))
++			AU_MVD_PR(dmsg, "wh_unlink failed\n");
++	}
++	dput(h_path.dentry);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/*
++ * unlink the topmost h_dentry
++ */
++static int au_do_unlink(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct path h_path;
++	struct inode *delegated;
++
++	h_path.mnt = au_sbr_mnt(a->sb, a->mvd_bsrc);
++	h_path.dentry = au_h_dptr(a->dentry, a->mvd_bsrc);
++	delegated = NULL;
++	err = vfsub_unlink(a->mvd_h_src_dir, &h_path, &delegated, /*force*/0);
++	if (unlikely(err == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal unlink\n");
++		iput(delegated);
++	}
++	if (unlikely(err))
++		AU_MVD_PR(dmsg, "unlink failed\n");
++
++	AuTraceErr(err);
++	return err;
++}
++
++/* Since mvdown succeeded, we ignore an error of this function */
++static void au_do_stfs(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct au_branch *br;
++
++	a->mvdown.flags |= AUFS_MVDOWN_STFS_FAILED;
++	br = au_sbr(a->sb, a->mvd_bsrc);
++	err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_UPPER].stfs);
++	if (!err) {
++		br = au_sbr(a->sb, a->mvd_bdst);
++		a->mvdown.stbr[AUFS_MVDOWN_LOWER].brid = br->br_id;
++		err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_LOWER].stfs);
++	}
++	if (!err)
++		a->mvdown.flags &= ~AUFS_MVDOWN_STFS_FAILED;
++	else
++		AU_MVD_PR(dmsg, "statfs failed (%d), ignored\n", err);
++}
++
++/*
++ * copy-down the file and unlink the bsrc file.
++ * - unlink the bdst whout if exist
++ * - copy-down the file (with whtmp name and rename)
++ * - unlink the bsrc file
++ */
++static int au_do_mvdown(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++
++	err = au_do_mkdir(dmsg, a);
++	if (!err)
++		err = au_do_lock(dmsg, a);
++	if (unlikely(err))
++		goto out;
++
++	/*
++	 * do not revert the activities we made on bdst since they should be
++	 * harmless in aufs.
++	 */
++
++	err = au_do_cpdown(dmsg, a);
++	if (!err)
++		err = au_do_unlink_wh(dmsg, a);
++	if (!err && !(a->mvdown.flags & AUFS_MVDOWN_KUPPER))
++		err = au_do_unlink(dmsg, a);
++	if (unlikely(err))
++		goto out_unlock;
++
++	AuDbg("%pd2, 0x%x, %d --> %d\n",
++	      a->dentry, a->mvdown.flags, a->mvd_bsrc, a->mvd_bdst);
++	if (find_lower_writable(a) < 0)
++		a->mvdown.flags |= AUFS_MVDOWN_BOTTOM;
++
++	if (a->mvdown.flags & AUFS_MVDOWN_STFS)
++		au_do_stfs(dmsg, a);
++
++	/* maintain internal array */
++	if (!(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) {
++		au_set_h_dptr(a->dentry, a->mvd_bsrc, NULL);
++		au_set_dbtop(a->dentry, a->mvd_bdst);
++		au_set_h_iptr(a->inode, a->mvd_bsrc, NULL, /*flags*/0);
++		au_set_ibtop(a->inode, a->mvd_bdst);
++	} else {
++		/* hide the lower */
++		au_set_h_dptr(a->dentry, a->mvd_bdst, NULL);
++		au_set_dbbot(a->dentry, a->mvd_bsrc);
++		au_set_h_iptr(a->inode, a->mvd_bdst, NULL, /*flags*/0);
++		au_set_ibbot(a->inode, a->mvd_bsrc);
++	}
++	if (au_dbbot(a->dentry) < a->mvd_bdst)
++		au_set_dbbot(a->dentry, a->mvd_bdst);
++	if (au_ibbot(a->inode) < a->mvd_bdst)
++		au_set_ibbot(a->inode, a->mvd_bdst);
++
++out_unlock:
++	au_do_unlock(dmsg, a);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* make sure the file is idle */
++static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err, plinked;
++
++	err = 0;
++	plinked = !!au_opt_test(au_mntflags(a->sb), PLINK);
++	if (au_dbtop(a->dentry) == a->mvd_bsrc
++	    && au_dcount(a->dentry) == 1
++	    && atomic_read(&a->inode->i_count) == 1
++	    /* && a->mvd_h_src_inode->i_nlink == 1 */
++	    && (!plinked || !au_plink_test(a->inode))
++	    && a->inode->i_nlink == 1)
++		goto out;
++
++	err = -EBUSY;
++	AU_MVD_PR(dmsg,
++		  "b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n",
++		  a->mvd_bsrc, au_dbtop(a->dentry), au_dcount(a->dentry),
++		  atomic_read(&a->inode->i_count), a->inode->i_nlink,
++		  a->mvd_h_src_inode->i_nlink,
++		  plinked, plinked ? au_plink_test(a->inode) : 0);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* make sure the parent dir is fine */
++static int au_mvd_args_parent(const unsigned char dmsg,
++			      struct au_mvd_args *a)
++{
++	int err;
++	aufs_bindex_t bindex;
++
++	err = 0;
++	if (unlikely(au_alive_dir(a->parent))) {
++		err = -ENOENT;
++		AU_MVD_PR(dmsg, "parent dir is dead\n");
++		goto out;
++	}
++
++	a->bopq = au_dbdiropq(a->parent);
++	bindex = au_wbr_nonopq(a->dentry, a->mvd_bdst);
++	AuDbg("b%d\n", bindex);
++	if (unlikely((bindex >= 0 && bindex < a->mvd_bdst)
++		     || (a->bopq != -1 && a->bopq < a->mvd_bdst))) {
++		err = -EINVAL;
++		a->mvd_errno = EAU_MVDOWN_OPAQUE;
++		AU_MVD_PR(dmsg, "ancestor is opaque b%d, b%d\n",
++			  a->bopq, a->mvd_bdst);
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_mvd_args_intermediate(const unsigned char dmsg,
++				    struct au_mvd_args *a)
++{
++	int err;
++	struct au_dinfo *dinfo, *tmp;
++
++	/* lookup the next lower positive entry */
++	err = -ENOMEM;
++	tmp = au_di_alloc(a->sb, AuLsc_DI_TMP);
++	if (unlikely(!tmp))
++		goto out;
++
++	a->bfound = -1;
++	a->bwh = -1;
++	dinfo = au_di(a->dentry);
++	au_di_cp(tmp, dinfo);
++	au_di_swap(tmp, dinfo);
++
++	/* returns the number of positive dentries */
++	err = au_lkup_dentry(a->dentry, a->mvd_bsrc + 1,
++			     /* AuLkup_IGNORE_PERM */ 0);
++	if (!err)
++		a->bwh = au_dbwh(a->dentry);
++	else if (err > 0)
++		a->bfound = au_dbtop(a->dentry);
++
++	au_di_swap(tmp, dinfo);
++	au_rw_write_unlock(&tmp->di_rwsem);
++	au_di_free(tmp);
++	if (unlikely(err < 0))
++		AU_MVD_PR(dmsg, "failed look-up lower\n");
++
++	/*
++	 * here, we have these cases.
++	 * bfound == -1
++	 *	no positive dentry under bsrc. there are more sub-cases.
++	 *	bwh < 0
++	 *		there no whiteout, we can safely move-down.
++	 *	bwh <= bsrc
++	 *		impossible
++	 *	bsrc < bwh && bwh < bdst
++	 *		there is a whiteout on RO branch. cannot proceed.
++	 *	bwh == bdst
++	 *		there is a whiteout on the RW target branch. it should
++	 *		be removed.
++	 *	bdst < bwh
++	 *		there is a whiteout somewhere unrelated branch.
++	 * -1 < bfound && bfound <= bsrc
++	 *	impossible.
++	 * bfound < bdst
++	 *	found, but it is on RO branch between bsrc and bdst. cannot
++	 *	proceed.
++	 * bfound == bdst
++	 *	found, replace it if AUFS_MVDOWN_FORCE is set. otherwise return
++	 *	error.
++	 * bdst < bfound
++	 *	found, after we create the file on bdst, it will be hidden.
++	 */
++
++	AuDebugOn(a->bfound == -1
++		  && a->bwh != -1
++		  && a->bwh <= a->mvd_bsrc);
++	AuDebugOn(-1 < a->bfound
++		  && a->bfound <= a->mvd_bsrc);
++
++	err = -EINVAL;
++	if (a->bfound == -1
++	    && a->mvd_bsrc < a->bwh
++	    && a->bwh != -1
++	    && a->bwh < a->mvd_bdst) {
++		a->mvd_errno = EAU_MVDOWN_WHITEOUT;
++		AU_MVD_PR(dmsg, "bsrc %d, bdst %d, bfound %d, bwh %d\n",
++			  a->mvd_bsrc, a->mvd_bdst, a->bfound, a->bwh);
++		goto out;
++	} else if (a->bfound != -1 && a->bfound < a->mvd_bdst) {
++		a->mvd_errno = EAU_MVDOWN_UPPER;
++		AU_MVD_PR(dmsg, "bdst %d, bfound %d\n",
++			  a->mvd_bdst, a->bfound);
++		goto out;
++	}
++
++	err = 0; /* success */
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_mvd_args_exist(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++
++	err = 0;
++	if (!(a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
++	    && a->bfound == a->mvd_bdst)
++		err = -EEXIST;
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_mvd_args(const unsigned char dmsg, struct au_mvd_args *a)
++{
++	int err;
++	struct au_branch *br;
++
++	err = -EISDIR;
++	if (unlikely(S_ISDIR(a->inode->i_mode)))
++		goto out;
++
++	err = -EINVAL;
++	if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_UPPER))
++		a->mvd_bsrc = au_ibtop(a->inode);
++	else {
++		a->mvd_bsrc = au_br_index(a->sb, a->mvd_src_brid);
++		if (unlikely(a->mvd_bsrc < 0
++			     || (a->mvd_bsrc < au_dbtop(a->dentry)
++				 || au_dbbot(a->dentry) < a->mvd_bsrc
++				 || !au_h_dptr(a->dentry, a->mvd_bsrc))
++			     || (a->mvd_bsrc < au_ibtop(a->inode)
++				 || au_ibbot(a->inode) < a->mvd_bsrc
++				 || !au_h_iptr(a->inode, a->mvd_bsrc)))) {
++			a->mvd_errno = EAU_MVDOWN_NOUPPER;
++			AU_MVD_PR(dmsg, "no upper\n");
++			goto out;
++		}
++	}
++	if (unlikely(a->mvd_bsrc == au_sbbot(a->sb))) {
++		a->mvd_errno = EAU_MVDOWN_BOTTOM;
++		AU_MVD_PR(dmsg, "on the bottom\n");
++		goto out;
++	}
++	a->mvd_h_src_inode = au_h_iptr(a->inode, a->mvd_bsrc);
++	br = au_sbr(a->sb, a->mvd_bsrc);
++	err = au_br_rdonly(br);
++	if (!(a->mvdown.flags & AUFS_MVDOWN_ROUPPER)) {
++		if (unlikely(err))
++			goto out;
++	} else if (!(vfsub_native_ro(a->mvd_h_src_inode)
++		     || IS_APPEND(a->mvd_h_src_inode))) {
++		if (err)
++			a->mvdown.flags |= AUFS_MVDOWN_ROUPPER_R;
++		/* go on */
++	} else
++		goto out;
++
++	err = -EINVAL;
++	if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_LOWER)) {
++		a->mvd_bdst = find_lower_writable(a);
++		if (unlikely(a->mvd_bdst < 0)) {
++			a->mvd_errno = EAU_MVDOWN_BOTTOM;
++			AU_MVD_PR(dmsg, "no writable lower branch\n");
++			goto out;
++		}
++	} else {
++		a->mvd_bdst = au_br_index(a->sb, a->mvd_dst_brid);
++		if (unlikely(a->mvd_bdst < 0
++			     || au_sbbot(a->sb) < a->mvd_bdst)) {
++			a->mvd_errno = EAU_MVDOWN_NOLOWERBR;
++			AU_MVD_PR(dmsg, "no lower brid\n");
++			goto out;
++		}
++	}
++
++	err = au_mvd_args_busy(dmsg, a);
++	if (!err)
++		err = au_mvd_args_parent(dmsg, a);
++	if (!err)
++		err = au_mvd_args_intermediate(dmsg, a);
++	if (!err)
++		err = au_mvd_args_exist(dmsg, a);
++	if (!err)
++		AuDbg("b%d, b%d\n", a->mvd_bsrc, a->mvd_bdst);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg)
++{
++	int err, e;
++	unsigned char dmsg;
++	struct au_mvd_args *args;
++	struct inode *inode;
++
++	inode = d_inode(dentry);
++	err = -EPERM;
++	if (unlikely(!capable(CAP_SYS_ADMIN)))
++		goto out;
++
++	err = -ENOMEM;
++	args = kmalloc(sizeof(*args), GFP_NOFS);
++	if (unlikely(!args))
++		goto out;
++
++	err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown));
++	if (!err)
++		/* VERIFY_WRITE */
++		err = !access_ok(uarg, sizeof(*uarg));
++	if (unlikely(err)) {
++		err = -EFAULT;
++		AuTraceErr(err);
++		goto out_free;
++	}
++	AuDbg("flags 0x%x\n", args->mvdown.flags);
++	args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R);
++	args->mvdown.au_errno = 0;
++	args->dentry = dentry;
++	args->inode = inode;
++	args->sb = dentry->d_sb;
++
++	err = -ENOENT;
++	dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG);
++	args->parent = dget_parent(dentry);
++	args->dir = d_inode(args->parent);
++	inode_lock_nested(args->dir, I_MUTEX_PARENT);
++	dput(args->parent);
++	if (unlikely(args->parent != dentry->d_parent)) {
++		AU_MVD_PR(dmsg, "parent dir is moved\n");
++		goto out_dir;
++	}
++
++	inode_lock_nested(inode, I_MUTEX_CHILD);
++	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_NOPLMW);
++	if (unlikely(err))
++		goto out_inode;
++
++	di_write_lock_parent(args->parent);
++	err = au_mvd_args(dmsg, args);
++	if (unlikely(err))
++		goto out_parent;
++
++	err = au_do_mvdown(dmsg, args);
++	if (unlikely(err))
++		goto out_parent;
++
++	au_cpup_attr_timesizes(args->dir);
++	au_cpup_attr_timesizes(inode);
++	if (!(args->mvdown.flags & AUFS_MVDOWN_KUPPER))
++		au_cpup_igen(inode, au_h_iptr(inode, args->mvd_bdst));
++	/* au_digen_dec(dentry); */
++
++out_parent:
++	di_write_unlock(args->parent);
++	aufs_read_unlock(dentry, AuLock_DW);
++out_inode:
++	inode_unlock(inode);
++out_dir:
++	inode_unlock(args->dir);
++out_free:
++	e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown));
++	if (unlikely(e))
++		err = -EFAULT;
++	au_kfree_rcu(args);
++out:
++	AuTraceErr(err);
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/opts.c linux-5.4-aufs/fs/aufs/opts.c
+--- linux-5.4/fs/aufs/opts.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/opts.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,1867 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * mount options/flags
++ */
++
++#include <linux/namei.h>
++#include <linux/types.h> /* a distribution requires */
++#include <linux/parser.h>
++#include "aufs.h"
++
++/* ---------------------------------------------------------------------- */
++
++enum {
++	Opt_br,
++	Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend,
++	Opt_idel, Opt_imod,
++	Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash,
++	Opt_rdblk_def, Opt_rdhash_def,
++	Opt_xino, Opt_noxino,
++	Opt_trunc_xino, Opt_trunc_xino_v, Opt_notrunc_xino,
++	Opt_trunc_xino_path, Opt_itrunc_xino,
++	Opt_trunc_xib, Opt_notrunc_xib,
++	Opt_shwh, Opt_noshwh,
++	Opt_plink, Opt_noplink, Opt_list_plink,
++	Opt_udba,
++	Opt_dio, Opt_nodio,
++	Opt_diropq_a, Opt_diropq_w,
++	Opt_warn_perm, Opt_nowarn_perm,
++	Opt_wbr_copyup, Opt_wbr_create,
++	Opt_fhsm_sec,
++	Opt_verbose, Opt_noverbose,
++	Opt_sum, Opt_nosum, Opt_wsum,
++	Opt_dirperm1, Opt_nodirperm1,
++	Opt_dirren, Opt_nodirren,
++	Opt_acl, Opt_noacl,
++	Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err
++};
++
++static match_table_t options = {
++	{Opt_br, "br=%s"},
++	{Opt_br, "br:%s"},
++
++	{Opt_add, "add=%d:%s"},
++	{Opt_add, "add:%d:%s"},
++	{Opt_add, "ins=%d:%s"},
++	{Opt_add, "ins:%d:%s"},
++	{Opt_append, "append=%s"},
++	{Opt_append, "append:%s"},
++	{Opt_prepend, "prepend=%s"},
++	{Opt_prepend, "prepend:%s"},
++
++	{Opt_del, "del=%s"},
++	{Opt_del, "del:%s"},
++	/* {Opt_idel, "idel:%d"}, */
++	{Opt_mod, "mod=%s"},
++	{Opt_mod, "mod:%s"},
++	/* {Opt_imod, "imod:%d:%s"}, */
++
++	{Opt_dirwh, "dirwh=%d"},
++
++	{Opt_xino, "xino=%s"},
++	{Opt_noxino, "noxino"},
++	{Opt_trunc_xino, "trunc_xino"},
++	{Opt_trunc_xino_v, "trunc_xino_v=%d:%d"},
++	{Opt_notrunc_xino, "notrunc_xino"},
++	{Opt_trunc_xino_path, "trunc_xino=%s"},
++	{Opt_itrunc_xino, "itrunc_xino=%d"},
++	/* {Opt_zxino, "zxino=%s"}, */
++	{Opt_trunc_xib, "trunc_xib"},
++	{Opt_notrunc_xib, "notrunc_xib"},
++
++#ifdef CONFIG_PROC_FS
++	{Opt_plink, "plink"},
++#else
++	{Opt_ignore_silent, "plink"},
++#endif
++
++	{Opt_noplink, "noplink"},
++
++#ifdef CONFIG_AUFS_DEBUG
++	{Opt_list_plink, "list_plink"},
++#endif
++
++	{Opt_udba, "udba=%s"},
++
++	{Opt_dio, "dio"},
++	{Opt_nodio, "nodio"},
++
++#ifdef CONFIG_AUFS_DIRREN
++	{Opt_dirren, "dirren"},
++	{Opt_nodirren, "nodirren"},
++#else
++	{Opt_ignore, "dirren"},
++	{Opt_ignore_silent, "nodirren"},
++#endif
++
++#ifdef CONFIG_AUFS_FHSM
++	{Opt_fhsm_sec, "fhsm_sec=%d"},
++#else
++	{Opt_ignore, "fhsm_sec=%d"},
++#endif
++
++	{Opt_diropq_a, "diropq=always"},
++	{Opt_diropq_a, "diropq=a"},
++	{Opt_diropq_w, "diropq=whiteouted"},
++	{Opt_diropq_w, "diropq=w"},
++
++	{Opt_warn_perm, "warn_perm"},
++	{Opt_nowarn_perm, "nowarn_perm"},
++
++	/* keep them temporary */
++	{Opt_ignore_silent, "nodlgt"},
++	{Opt_ignore, "clean_plink"},
++
++#ifdef CONFIG_AUFS_SHWH
++	{Opt_shwh, "shwh"},
++#endif
++	{Opt_noshwh, "noshwh"},
++
++	{Opt_dirperm1, "dirperm1"},
++	{Opt_nodirperm1, "nodirperm1"},
++
++	{Opt_verbose, "verbose"},
++	{Opt_verbose, "v"},
++	{Opt_noverbose, "noverbose"},
++	{Opt_noverbose, "quiet"},
++	{Opt_noverbose, "q"},
++	{Opt_noverbose, "silent"},
++
++	{Opt_sum, "sum"},
++	{Opt_nosum, "nosum"},
++	{Opt_wsum, "wsum"},
++
++	{Opt_rdcache, "rdcache=%d"},
++	{Opt_rdblk, "rdblk=%d"},
++	{Opt_rdblk_def, "rdblk=def"},
++	{Opt_rdhash, "rdhash=%d"},
++	{Opt_rdhash_def, "rdhash=def"},
++
++	{Opt_wbr_create, "create=%s"},
++	{Opt_wbr_create, "create_policy=%s"},
++	{Opt_wbr_copyup, "cpup=%s"},
++	{Opt_wbr_copyup, "copyup=%s"},
++	{Opt_wbr_copyup, "copyup_policy=%s"},
++
++	/* generic VFS flag */
++#ifdef CONFIG_FS_POSIX_ACL
++	{Opt_acl, "acl"},
++	{Opt_noacl, "noacl"},
++#else
++	{Opt_ignore, "acl"},
++	{Opt_ignore_silent, "noacl"},
++#endif
++
++	/* internal use for the scripts */
++	{Opt_ignore_silent, "si=%s"},
++
++	{Opt_br, "dirs=%s"},
++	{Opt_ignore, "debug=%d"},
++	{Opt_ignore, "delete=whiteout"},
++	{Opt_ignore, "delete=all"},
++	{Opt_ignore, "imap=%s"},
++
++	/* temporary workaround, due to old mount(8)? */
++	{Opt_ignore_silent, "relatime"},
++
++	{Opt_err, NULL}
++};
++
++/* ---------------------------------------------------------------------- */
++
++static const char *au_parser_pattern(int val, match_table_t tbl)
++{
++	struct match_token *p;
++
++	p = tbl;
++	while (p->pattern) {
++		if (p->token == val)
++			return p->pattern;
++		p++;
++	}
++	BUG();
++	return "??";
++}
++
++static const char *au_optstr(int *val, match_table_t tbl)
++{
++	struct match_token *p;
++	int v;
++
++	v = *val;
++	if (!v)
++		goto out;
++	p = tbl;
++	while (p->pattern) {
++		if (p->token
++		    && (v & p->token) == p->token) {
++			*val &= ~p->token;
++			return p->pattern;
++		}
++		p++;
++	}
++
++out:
++	return NULL;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static match_table_t brperm = {
++	{AuBrPerm_RO, AUFS_BRPERM_RO},
++	{AuBrPerm_RR, AUFS_BRPERM_RR},
++	{AuBrPerm_RW, AUFS_BRPERM_RW},
++	{0, NULL}
++};
++
++static match_table_t brattr = {
++	/* general */
++	{AuBrAttr_COO_REG, AUFS_BRATTR_COO_REG},
++	{AuBrAttr_COO_ALL, AUFS_BRATTR_COO_ALL},
++	/* 'unpin' attrib is meaningless since linux-3.18-rc1 */
++	{AuBrAttr_UNPIN, AUFS_BRATTR_UNPIN},
++#ifdef CONFIG_AUFS_FHSM
++	{AuBrAttr_FHSM, AUFS_BRATTR_FHSM},
++#endif
++#ifdef CONFIG_AUFS_XATTR
++	{AuBrAttr_ICEX, AUFS_BRATTR_ICEX},
++	{AuBrAttr_ICEX_SEC, AUFS_BRATTR_ICEX_SEC},
++	{AuBrAttr_ICEX_SYS, AUFS_BRATTR_ICEX_SYS},
++	{AuBrAttr_ICEX_TR, AUFS_BRATTR_ICEX_TR},
++	{AuBrAttr_ICEX_USR, AUFS_BRATTR_ICEX_USR},
++	{AuBrAttr_ICEX_OTH, AUFS_BRATTR_ICEX_OTH},
++#endif
++
++	/* ro/rr branch */
++	{AuBrRAttr_WH, AUFS_BRRATTR_WH},
++
++	/* rw branch */
++	{AuBrWAttr_MOO, AUFS_BRWATTR_MOO},
++	{AuBrWAttr_NoLinkWH, AUFS_BRWATTR_NLWH},
++
++	{0, NULL}
++};
++
++static int br_attr_val(char *str, match_table_t table, substring_t args[])
++{
++	int attr, v;
++	char *p;
++
++	attr = 0;
++	do {
++		p = strchr(str, '+');
++		if (p)
++			*p = 0;
++		v = match_token(str, table, args);
++		if (v) {
++			if (v & AuBrAttr_CMOO_Mask)
++				attr &= ~AuBrAttr_CMOO_Mask;
++			attr |= v;
++		} else {
++			if (p)
++				*p = '+';
++			pr_warn("ignored branch attribute %s\n", str);
++			break;
++		}
++		if (p)
++			str = p + 1;
++	} while (p);
++
++	return attr;
++}
++
++static int au_do_optstr_br_attr(au_br_perm_str_t *str, int perm)
++{
++	int sz;
++	const char *p;
++	char *q;
++
++	q = str->a;
++	*q = 0;
++	p = au_optstr(&perm, brattr);
++	if (p) {
++		sz = strlen(p);
++		memcpy(q, p, sz + 1);
++		q += sz;
++	} else
++		goto out;
++
++	do {
++		p = au_optstr(&perm, brattr);
++		if (p) {
++			*q++ = '+';
++			sz = strlen(p);
++			memcpy(q, p, sz + 1);
++			q += sz;
++		}
++	} while (p);
++
++out:
++	return q - str->a;
++}
++
++static int noinline_for_stack br_perm_val(char *perm)
++{
++	int val, bad, sz;
++	char *p;
++	substring_t args[MAX_OPT_ARGS];
++	au_br_perm_str_t attr;
++
++	p = strchr(perm, '+');
++	if (p)
++		*p = 0;
++	val = match_token(perm, brperm, args);
++	if (!val) {
++		if (p)
++			*p = '+';
++		pr_warn("ignored branch permission %s\n", perm);
++		val = AuBrPerm_RO;
++		goto out;
++	}
++	if (!p)
++		goto out;
++
++	val |= br_attr_val(p + 1, brattr, args);
++
++	bad = 0;
++	switch (val & AuBrPerm_Mask) {
++	case AuBrPerm_RO:
++	case AuBrPerm_RR:
++		bad = val & AuBrWAttr_Mask;
++		val &= ~AuBrWAttr_Mask;
++		break;
++	case AuBrPerm_RW:
++		bad = val & AuBrRAttr_Mask;
++		val &= ~AuBrRAttr_Mask;
++		break;
++	}
++
++	/*
++	 * 'unpin' attrib becomes meaningless since linux-3.18-rc1, but aufs
++	 * does not treat it as an error, just warning.
++	 * this is a tiny guard for the user operation.
++	 */
++	if (val & AuBrAttr_UNPIN) {
++		bad |= AuBrAttr_UNPIN;
++		val &= ~AuBrAttr_UNPIN;
++	}
++
++	if (unlikely(bad)) {
++		sz = au_do_optstr_br_attr(&attr, bad);
++		AuDebugOn(!sz);
++		pr_warn("ignored branch attribute %s\n", attr.a);
++	}
++
++out:
++	return val;
++}
++
++void au_optstr_br_perm(au_br_perm_str_t *str, int perm)
++{
++	au_br_perm_str_t attr;
++	const char *p;
++	char *q;
++	int sz;
++
++	q = str->a;
++	p = au_optstr(&perm, brperm);
++	AuDebugOn(!p || !*p);
++	sz = strlen(p);
++	memcpy(q, p, sz + 1);
++	q += sz;
++
++	sz = au_do_optstr_br_attr(&attr, perm);
++	if (sz) {
++		*q++ = '+';
++		memcpy(q, attr.a, sz + 1);
++	}
++
++	AuDebugOn(strlen(str->a) >= sizeof(str->a));
++}
++
++/* ---------------------------------------------------------------------- */
++
++static match_table_t udbalevel = {
++	{AuOpt_UDBA_REVAL, "reval"},
++	{AuOpt_UDBA_NONE, "none"},
++#ifdef CONFIG_AUFS_HNOTIFY
++	{AuOpt_UDBA_HNOTIFY, "notify"}, /* abstraction */
++#ifdef CONFIG_AUFS_HFSNOTIFY
++	{AuOpt_UDBA_HNOTIFY, "fsnotify"},
++#endif
++#endif
++	{-1, NULL}
++};
++
++static int noinline_for_stack udba_val(char *str)
++{
++	substring_t args[MAX_OPT_ARGS];
++
++	return match_token(str, udbalevel, args);
++}
++
++const char *au_optstr_udba(int udba)
++{
++	return au_parser_pattern(udba, udbalevel);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static match_table_t au_wbr_create_policy = {
++	{AuWbrCreate_TDP, "tdp"},
++	{AuWbrCreate_TDP, "top-down-parent"},
++	{AuWbrCreate_RR, "rr"},
++	{AuWbrCreate_RR, "round-robin"},
++	{AuWbrCreate_MFS, "mfs"},
++	{AuWbrCreate_MFS, "most-free-space"},
++	{AuWbrCreate_MFSV, "mfs:%d"},
++	{AuWbrCreate_MFSV, "most-free-space:%d"},
++
++	/* top-down regardless the parent, and then mfs */
++	{AuWbrCreate_TDMFS, "tdmfs:%d"},
++	{AuWbrCreate_TDMFSV, "tdmfs:%d:%d"},
++
++	{AuWbrCreate_MFSRR, "mfsrr:%d"},
++	{AuWbrCreate_MFSRRV, "mfsrr:%d:%d"},
++	{AuWbrCreate_PMFS, "pmfs"},
++	{AuWbrCreate_PMFSV, "pmfs:%d"},
++	{AuWbrCreate_PMFSRR, "pmfsrr:%d"},
++	{AuWbrCreate_PMFSRRV, "pmfsrr:%d:%d"},
++
++	{-1, NULL}
++};
++
++static int au_wbr_mfs_wmark(substring_t *arg, char *str,
++			    struct au_opt_wbr_create *create)
++{
++	int err;
++	unsigned long long ull;
++
++	err = 0;
++	if (!match_u64(arg, &ull))
++		create->mfsrr_watermark = ull;
++	else {
++		pr_err("bad integer in %s\n", str);
++		err = -EINVAL;
++	}
++
++	return err;
++}
++
++static int au_wbr_mfs_sec(substring_t *arg, char *str,
++			  struct au_opt_wbr_create *create)
++{
++	int n, err;
++
++	err = 0;
++	if (!match_int(arg, &n) && 0 <= n && n <= AUFS_MFS_MAX_SEC)
++		create->mfs_second = n;
++	else {
++		pr_err("bad integer in %s\n", str);
++		err = -EINVAL;
++	}
++
++	return err;
++}
++
++static int noinline_for_stack
++au_wbr_create_val(char *str, struct au_opt_wbr_create *create)
++{
++	int err, e;
++	substring_t args[MAX_OPT_ARGS];
++
++	err = match_token(str, au_wbr_create_policy, args);
++	create->wbr_create = err;
++	switch (err) {
++	case AuWbrCreate_MFSRRV:
++	case AuWbrCreate_TDMFSV:
++	case AuWbrCreate_PMFSRRV:
++		e = au_wbr_mfs_wmark(&args[0], str, create);
++		if (!e)
++			e = au_wbr_mfs_sec(&args[1], str, create);
++		if (unlikely(e))
++			err = e;
++		break;
++	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
++	case AuWbrCreate_PMFSRR:
++		e = au_wbr_mfs_wmark(&args[0], str, create);
++		if (unlikely(e)) {
++			err = e;
++			break;
++		}
++		/*FALLTHROUGH*/
++	case AuWbrCreate_MFS:
++	case AuWbrCreate_PMFS:
++		create->mfs_second = AUFS_MFS_DEF_SEC;
++		break;
++	case AuWbrCreate_MFSV:
++	case AuWbrCreate_PMFSV:
++		e = au_wbr_mfs_sec(&args[0], str, create);
++		if (unlikely(e))
++			err = e;
++		break;
++	}
++
++	return err;
++}
++
++const char *au_optstr_wbr_create(int wbr_create)
++{
++	return au_parser_pattern(wbr_create, au_wbr_create_policy);
++}
++
++static match_table_t au_wbr_copyup_policy = {
++	{AuWbrCopyup_TDP, "tdp"},
++	{AuWbrCopyup_TDP, "top-down-parent"},
++	{AuWbrCopyup_BUP, "bup"},
++	{AuWbrCopyup_BUP, "bottom-up-parent"},
++	{AuWbrCopyup_BU, "bu"},
++	{AuWbrCopyup_BU, "bottom-up"},
++	{-1, NULL}
++};
++
++static int noinline_for_stack au_wbr_copyup_val(char *str)
++{
++	substring_t args[MAX_OPT_ARGS];
++
++	return match_token(str, au_wbr_copyup_policy, args);
++}
++
++const char *au_optstr_wbr_copyup(int wbr_copyup)
++{
++	return au_parser_pattern(wbr_copyup, au_wbr_copyup_policy);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static const int lkup_dirflags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY;
++
++static void dump_opts(struct au_opts *opts)
++{
++#ifdef CONFIG_AUFS_DEBUG
++	/* reduce stack space */
++	union {
++		struct au_opt_add *add;
++		struct au_opt_del *del;
++		struct au_opt_mod *mod;
++		struct au_opt_xino *xino;
++		struct au_opt_xino_itrunc *xino_itrunc;
++		struct au_opt_wbr_create *create;
++	} u;
++	struct au_opt *opt;
++
++	opt = opts->opt;
++	while (opt->type != Opt_tail) {
++		switch (opt->type) {
++		case Opt_add:
++			u.add = &opt->add;
++			AuDbg("add {b%d, %s, 0x%x, %p}\n",
++				  u.add->bindex, u.add->pathname, u.add->perm,
++				  u.add->path.dentry);
++			break;
++		case Opt_del:
++		case Opt_idel:
++			u.del = &opt->del;
++			AuDbg("del {%s, %p}\n",
++			      u.del->pathname, u.del->h_path.dentry);
++			break;
++		case Opt_mod:
++		case Opt_imod:
++			u.mod = &opt->mod;
++			AuDbg("mod {%s, 0x%x, %p}\n",
++				  u.mod->path, u.mod->perm, u.mod->h_root);
++			break;
++		case Opt_append:
++			u.add = &opt->add;
++			AuDbg("append {b%d, %s, 0x%x, %p}\n",
++				  u.add->bindex, u.add->pathname, u.add->perm,
++				  u.add->path.dentry);
++			break;
++		case Opt_prepend:
++			u.add = &opt->add;
++			AuDbg("prepend {b%d, %s, 0x%x, %p}\n",
++				  u.add->bindex, u.add->pathname, u.add->perm,
++				  u.add->path.dentry);
++			break;
++		case Opt_dirwh:
++			AuDbg("dirwh %d\n", opt->dirwh);
++			break;
++		case Opt_rdcache:
++			AuDbg("rdcache %d\n", opt->rdcache);
++			break;
++		case Opt_rdblk:
++			AuDbg("rdblk %u\n", opt->rdblk);
++			break;
++		case Opt_rdblk_def:
++			AuDbg("rdblk_def\n");
++			break;
++		case Opt_rdhash:
++			AuDbg("rdhash %u\n", opt->rdhash);
++			break;
++		case Opt_rdhash_def:
++			AuDbg("rdhash_def\n");
++			break;
++		case Opt_xino:
++			u.xino = &opt->xino;
++			AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file);
++			break;
++		case Opt_trunc_xino:
++			AuLabel(trunc_xino);
++			break;
++		case Opt_notrunc_xino:
++			AuLabel(notrunc_xino);
++			break;
++		case Opt_trunc_xino_path:
++		case Opt_itrunc_xino:
++			u.xino_itrunc = &opt->xino_itrunc;
++			AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex);
++			break;
++		case Opt_noxino:
++			AuLabel(noxino);
++			break;
++		case Opt_trunc_xib:
++			AuLabel(trunc_xib);
++			break;
++		case Opt_notrunc_xib:
++			AuLabel(notrunc_xib);
++			break;
++		case Opt_shwh:
++			AuLabel(shwh);
++			break;
++		case Opt_noshwh:
++			AuLabel(noshwh);
++			break;
++		case Opt_dirperm1:
++			AuLabel(dirperm1);
++			break;
++		case Opt_nodirperm1:
++			AuLabel(nodirperm1);
++			break;
++		case Opt_plink:
++			AuLabel(plink);
++			break;
++		case Opt_noplink:
++			AuLabel(noplink);
++			break;
++		case Opt_list_plink:
++			AuLabel(list_plink);
++			break;
++		case Opt_udba:
++			AuDbg("udba %d, %s\n",
++				  opt->udba, au_optstr_udba(opt->udba));
++			break;
++		case Opt_dio:
++			AuLabel(dio);
++			break;
++		case Opt_nodio:
++			AuLabel(nodio);
++			break;
++		case Opt_diropq_a:
++			AuLabel(diropq_a);
++			break;
++		case Opt_diropq_w:
++			AuLabel(diropq_w);
++			break;
++		case Opt_warn_perm:
++			AuLabel(warn_perm);
++			break;
++		case Opt_nowarn_perm:
++			AuLabel(nowarn_perm);
++			break;
++		case Opt_verbose:
++			AuLabel(verbose);
++			break;
++		case Opt_noverbose:
++			AuLabel(noverbose);
++			break;
++		case Opt_sum:
++			AuLabel(sum);
++			break;
++		case Opt_nosum:
++			AuLabel(nosum);
++			break;
++		case Opt_wsum:
++			AuLabel(wsum);
++			break;
++		case Opt_wbr_create:
++			u.create = &opt->wbr_create;
++			AuDbg("create %d, %s\n", u.create->wbr_create,
++				  au_optstr_wbr_create(u.create->wbr_create));
++			switch (u.create->wbr_create) {
++			case AuWbrCreate_MFSV:
++			case AuWbrCreate_PMFSV:
++				AuDbg("%d sec\n", u.create->mfs_second);
++				break;
++			case AuWbrCreate_MFSRR:
++			case AuWbrCreate_TDMFS:
++				AuDbg("%llu watermark\n",
++					  u.create->mfsrr_watermark);
++				break;
++			case AuWbrCreate_MFSRRV:
++			case AuWbrCreate_TDMFSV:
++			case AuWbrCreate_PMFSRRV:
++				AuDbg("%llu watermark, %d sec\n",
++					  u.create->mfsrr_watermark,
++					  u.create->mfs_second);
++				break;
++			}
++			break;
++		case Opt_wbr_copyup:
++			AuDbg("copyup %d, %s\n", opt->wbr_copyup,
++				  au_optstr_wbr_copyup(opt->wbr_copyup));
++			break;
++		case Opt_fhsm_sec:
++			AuDbg("fhsm_sec %u\n", opt->fhsm_second);
++			break;
++		case Opt_dirren:
++			AuLabel(dirren);
++			break;
++		case Opt_nodirren:
++			AuLabel(nodirren);
++			break;
++		case Opt_acl:
++			AuLabel(acl);
++			break;
++		case Opt_noacl:
++			AuLabel(noacl);
++			break;
++		default:
++			BUG();
++		}
++		opt++;
++	}
++#endif
++}
++
++void au_opts_free(struct au_opts *opts)
++{
++	struct au_opt *opt;
++
++	opt = opts->opt;
++	while (opt->type != Opt_tail) {
++		switch (opt->type) {
++		case Opt_add:
++		case Opt_append:
++		case Opt_prepend:
++			path_put(&opt->add.path);
++			break;
++		case Opt_del:
++		case Opt_idel:
++			path_put(&opt->del.h_path);
++			break;
++		case Opt_mod:
++		case Opt_imod:
++			dput(opt->mod.h_root);
++			break;
++		case Opt_xino:
++			fput(opt->xino.file);
++			break;
++		}
++		opt++;
++	}
++}
++
++static int opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags,
++		   aufs_bindex_t bindex)
++{
++	int err;
++	struct au_opt_add *add = &opt->add;
++	char *p;
++
++	add->bindex = bindex;
++	add->perm = AuBrPerm_RO;
++	add->pathname = opt_str;
++	p = strchr(opt_str, '=');
++	if (p) {
++		*p++ = 0;
++		if (*p)
++			add->perm = br_perm_val(p);
++	}
++
++	err = vfsub_kern_path(add->pathname, lkup_dirflags, &add->path);
++	if (!err) {
++		if (!p) {
++			add->perm = AuBrPerm_RO;
++			if (au_test_fs_rr(add->path.dentry->d_sb))
++				add->perm = AuBrPerm_RR;
++			else if (!bindex && !(sb_flags & SB_RDONLY))
++				add->perm = AuBrPerm_RW;
++		}
++		opt->type = Opt_add;
++		goto out;
++	}
++	pr_err("lookup failed %s (%d)\n", add->pathname, err);
++	err = -EINVAL;
++
++out:
++	return err;
++}
++
++static int au_opts_parse_del(struct au_opt_del *del, substring_t args[])
++{
++	int err;
++
++	del->pathname = args[0].from;
++	AuDbg("del path %s\n", del->pathname);
++
++	err = vfsub_kern_path(del->pathname, lkup_dirflags, &del->h_path);
++	if (unlikely(err))
++		pr_err("lookup failed %s (%d)\n", del->pathname, err);
++
++	return err;
++}
++
++#if 0 /* reserved for future use */
++static int au_opts_parse_idel(struct super_block *sb, aufs_bindex_t bindex,
++			      struct au_opt_del *del, substring_t args[])
++{
++	int err;
++	struct dentry *root;
++
++	err = -EINVAL;
++	root = sb->s_root;
++	aufs_read_lock(root, AuLock_FLUSH);
++	if (bindex < 0 || au_sbbot(sb) < bindex) {
++		pr_err("out of bounds, %d\n", bindex);
++		goto out;
++	}
++
++	err = 0;
++	del->h_path.dentry = dget(au_h_dptr(root, bindex));
++	del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex));
++
++out:
++	aufs_read_unlock(root, !AuLock_IR);
++	return err;
++}
++#endif
++
++static int noinline_for_stack
++au_opts_parse_mod(struct au_opt_mod *mod, substring_t args[])
++{
++	int err;
++	struct path path;
++	char *p;
++
++	err = -EINVAL;
++	mod->path = args[0].from;
++	p = strchr(mod->path, '=');
++	if (unlikely(!p)) {
++		pr_err("no permission %s\n", args[0].from);
++		goto out;
++	}
++
++	*p++ = 0;
++	err = vfsub_kern_path(mod->path, lkup_dirflags, &path);
++	if (unlikely(err)) {
++		pr_err("lookup failed %s (%d)\n", mod->path, err);
++		goto out;
++	}
++
++	mod->perm = br_perm_val(p);
++	AuDbg("mod path %s, perm 0x%x, %s\n", mod->path, mod->perm, p);
++	mod->h_root = dget(path.dentry);
++	path_put(&path);
++
++out:
++	return err;
++}
++
++#if 0 /* reserved for future use */
++static int au_opts_parse_imod(struct super_block *sb, aufs_bindex_t bindex,
++			      struct au_opt_mod *mod, substring_t args[])
++{
++	int err;
++	struct dentry *root;
++
++	err = -EINVAL;
++	root = sb->s_root;
++	aufs_read_lock(root, AuLock_FLUSH);
++	if (bindex < 0 || au_sbbot(sb) < bindex) {
++		pr_err("out of bounds, %d\n", bindex);
++		goto out;
++	}
++
++	err = 0;
++	mod->perm = br_perm_val(args[1].from);
++	AuDbg("mod path %s, perm 0x%x, %s\n",
++	      mod->path, mod->perm, args[1].from);
++	mod->h_root = dget(au_h_dptr(root, bindex));
++
++out:
++	aufs_read_unlock(root, !AuLock_IR);
++	return err;
++}
++#endif
++
++static int au_opts_parse_xino(struct super_block *sb, struct au_opt_xino *xino,
++			      substring_t args[])
++{
++	int err;
++	struct file *file;
++
++	file = au_xino_create(sb, args[0].from, /*silent*/0, /*wbrtop*/0);
++	err = PTR_ERR(file);
++	if (IS_ERR(file))
++		goto out;
++
++	err = -EINVAL;
++	if (unlikely(file->f_path.dentry->d_sb == sb)) {
++		fput(file);
++		pr_err("%s must be outside\n", args[0].from);
++		goto out;
++	}
++
++	err = 0;
++	xino->file = file;
++	xino->path = args[0].from;
++
++out:
++	return err;
++}
++
++static int noinline_for_stack
++au_opts_parse_xino_itrunc_path(struct super_block *sb,
++			       struct au_opt_xino_itrunc *xino_itrunc,
++			       substring_t args[])
++{
++	int err;
++	aufs_bindex_t bbot, bindex;
++	struct path path;
++	struct dentry *root;
++
++	err = vfsub_kern_path(args[0].from, lkup_dirflags, &path);
++	if (unlikely(err)) {
++		pr_err("lookup failed %s (%d)\n", args[0].from, err);
++		goto out;
++	}
++
++	xino_itrunc->bindex = -1;
++	root = sb->s_root;
++	aufs_read_lock(root, AuLock_FLUSH);
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		if (au_h_dptr(root, bindex) == path.dentry) {
++			xino_itrunc->bindex = bindex;
++			break;
++		}
++	}
++	aufs_read_unlock(root, !AuLock_IR);
++	path_put(&path);
++
++	if (unlikely(xino_itrunc->bindex < 0)) {
++		pr_err("no such branch %s\n", args[0].from);
++		err = -EINVAL;
++	}
++
++out:
++	return err;
++}
++
++/* called without aufs lock */
++int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts)
++{
++	int err, n, token;
++	aufs_bindex_t bindex;
++	unsigned char skipped;
++	struct dentry *root;
++	struct au_opt *opt, *opt_tail;
++	char *opt_str;
++	/* reduce the stack space */
++	union {
++		struct au_opt_xino_itrunc *xino_itrunc;
++		struct au_opt_wbr_create *create;
++	} u;
++	struct {
++		substring_t args[MAX_OPT_ARGS];
++	} *a;
++
++	err = -ENOMEM;
++	a = kmalloc(sizeof(*a), GFP_NOFS);
++	if (unlikely(!a))
++		goto out;
++
++	root = sb->s_root;
++	err = 0;
++	bindex = 0;
++	opt = opts->opt;
++	opt_tail = opt + opts->max_opt - 1;
++	opt->type = Opt_tail;
++	while (!err && (opt_str = strsep(&str, ",")) && *opt_str) {
++		err = -EINVAL;
++		skipped = 0;
++		token = match_token(opt_str, options, a->args);
++		switch (token) {
++		case Opt_br:
++			err = 0;
++			while (!err && (opt_str = strsep(&a->args[0].from, ":"))
++			       && *opt_str) {
++				err = opt_add(opt, opt_str, opts->sb_flags,
++					      bindex++);
++				if (unlikely(!err && ++opt > opt_tail)) {
++					err = -E2BIG;
++					break;
++				}
++				opt->type = Opt_tail;
++				skipped = 1;
++			}
++			break;
++		case Opt_add:
++			if (unlikely(match_int(&a->args[0], &n))) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			bindex = n;
++			err = opt_add(opt, a->args[1].from, opts->sb_flags,
++				      bindex);
++			if (!err)
++				opt->type = token;
++			break;
++		case Opt_append:
++			err = opt_add(opt, a->args[0].from, opts->sb_flags,
++				      /*dummy bindex*/1);
++			if (!err)
++				opt->type = token;
++			break;
++		case Opt_prepend:
++			err = opt_add(opt, a->args[0].from, opts->sb_flags,
++				      /*bindex*/0);
++			if (!err)
++				opt->type = token;
++			break;
++		case Opt_del:
++			err = au_opts_parse_del(&opt->del, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++#if 0 /* reserved for future use */
++		case Opt_idel:
++			del->pathname = "(indexed)";
++			if (unlikely(match_int(&args[0], &n))) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			err = au_opts_parse_idel(sb, n, &opt->del, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++#endif
++		case Opt_mod:
++			err = au_opts_parse_mod(&opt->mod, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++#ifdef IMOD /* reserved for future use */
++		case Opt_imod:
++			u.mod->path = "(indexed)";
++			if (unlikely(match_int(&a->args[0], &n))) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			err = au_opts_parse_imod(sb, n, &opt->mod, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++#endif
++		case Opt_xino:
++			err = au_opts_parse_xino(sb, &opt->xino, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++
++		case Opt_trunc_xino_path:
++			err = au_opts_parse_xino_itrunc_path
++				(sb, &opt->xino_itrunc, a->args);
++			if (!err)
++				opt->type = token;
++			break;
++
++		case Opt_itrunc_xino:
++			u.xino_itrunc = &opt->xino_itrunc;
++			if (unlikely(match_int(&a->args[0], &n))) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			u.xino_itrunc->bindex = n;
++			aufs_read_lock(root, AuLock_FLUSH);
++			if (n < 0 || au_sbbot(sb) < n) {
++				pr_err("out of bounds, %d\n", n);
++				aufs_read_unlock(root, !AuLock_IR);
++				break;
++			}
++			aufs_read_unlock(root, !AuLock_IR);
++			err = 0;
++			opt->type = token;
++			break;
++
++		case Opt_dirwh:
++			if (unlikely(match_int(&a->args[0], &opt->dirwh)))
++				break;
++			err = 0;
++			opt->type = token;
++			break;
++
++		case Opt_rdcache:
++			if (unlikely(match_int(&a->args[0], &n))) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			if (unlikely(n > AUFS_RDCACHE_MAX)) {
++				pr_err("rdcache must be smaller than %d\n",
++				       AUFS_RDCACHE_MAX);
++				break;
++			}
++			opt->rdcache = n;
++			err = 0;
++			opt->type = token;
++			break;
++		case Opt_rdblk:
++			if (unlikely(match_int(&a->args[0], &n)
++				     || n < 0
++				     || n > KMALLOC_MAX_SIZE)) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			if (unlikely(n && n < NAME_MAX)) {
++				pr_err("rdblk must be larger than %d\n",
++				       NAME_MAX);
++				break;
++			}
++			opt->rdblk = n;
++			err = 0;
++			opt->type = token;
++			break;
++		case Opt_rdhash:
++			if (unlikely(match_int(&a->args[0], &n)
++				     || n < 0
++				     || n * sizeof(struct hlist_head)
++				     > KMALLOC_MAX_SIZE)) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			opt->rdhash = n;
++			err = 0;
++			opt->type = token;
++			break;
++
++		case Opt_trunc_xino:
++		case Opt_notrunc_xino:
++		case Opt_noxino:
++		case Opt_trunc_xib:
++		case Opt_notrunc_xib:
++		case Opt_shwh:
++		case Opt_noshwh:
++		case Opt_dirperm1:
++		case Opt_nodirperm1:
++		case Opt_plink:
++		case Opt_noplink:
++		case Opt_list_plink:
++		case Opt_dio:
++		case Opt_nodio:
++		case Opt_diropq_a:
++		case Opt_diropq_w:
++		case Opt_warn_perm:
++		case Opt_nowarn_perm:
++		case Opt_verbose:
++		case Opt_noverbose:
++		case Opt_sum:
++		case Opt_nosum:
++		case Opt_wsum:
++		case Opt_rdblk_def:
++		case Opt_rdhash_def:
++		case Opt_dirren:
++		case Opt_nodirren:
++		case Opt_acl:
++		case Opt_noacl:
++			err = 0;
++			opt->type = token;
++			break;
++
++		case Opt_udba:
++			opt->udba = udba_val(a->args[0].from);
++			if (opt->udba >= 0) {
++				err = 0;
++				opt->type = token;
++			} else
++				pr_err("wrong value, %s\n", opt_str);
++			break;
++
++		case Opt_wbr_create:
++			u.create = &opt->wbr_create;
++			u.create->wbr_create
++				= au_wbr_create_val(a->args[0].from, u.create);
++			if (u.create->wbr_create >= 0) {
++				err = 0;
++				opt->type = token;
++			} else
++				pr_err("wrong value, %s\n", opt_str);
++			break;
++		case Opt_wbr_copyup:
++			opt->wbr_copyup = au_wbr_copyup_val(a->args[0].from);
++			if (opt->wbr_copyup >= 0) {
++				err = 0;
++				opt->type = token;
++			} else
++				pr_err("wrong value, %s\n", opt_str);
++			break;
++
++		case Opt_fhsm_sec:
++			if (unlikely(match_int(&a->args[0], &n)
++				     || n < 0)) {
++				pr_err("bad integer in %s\n", opt_str);
++				break;
++			}
++			if (sysaufs_brs) {
++				opt->fhsm_second = n;
++				opt->type = token;
++			} else
++				pr_warn("ignored %s\n", opt_str);
++			err = 0;
++			break;
++
++		case Opt_ignore:
++			pr_warn("ignored %s\n", opt_str);
++			/*FALLTHROUGH*/
++		case Opt_ignore_silent:
++			skipped = 1;
++			err = 0;
++			break;
++		case Opt_err:
++			pr_err("unknown option %s\n", opt_str);
++			break;
++		}
++
++		if (!err && !skipped) {
++			if (unlikely(++opt > opt_tail)) {
++				err = -E2BIG;
++				opt--;
++				opt->type = Opt_tail;
++				break;
++			}
++			opt->type = Opt_tail;
++		}
++	}
++
++	au_kfree_rcu(a);
++	dump_opts(opts);
++	if (unlikely(err))
++		au_opts_free(opts);
++
++out:
++	return err;
++}
++
++static int au_opt_wbr_create(struct super_block *sb,
++			     struct au_opt_wbr_create *create)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	err = 1; /* handled */
++	sbinfo = au_sbi(sb);
++	if (sbinfo->si_wbr_create_ops->fin) {
++		err = sbinfo->si_wbr_create_ops->fin(sb);
++		if (!err)
++			err = 1;
++	}
++
++	sbinfo->si_wbr_create = create->wbr_create;
++	sbinfo->si_wbr_create_ops = au_wbr_create_ops + create->wbr_create;
++	switch (create->wbr_create) {
++	case AuWbrCreate_MFSRRV:
++	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
++	case AuWbrCreate_TDMFSV:
++	case AuWbrCreate_PMFSRR:
++	case AuWbrCreate_PMFSRRV:
++		sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark;
++		/*FALLTHROUGH*/
++	case AuWbrCreate_MFS:
++	case AuWbrCreate_MFSV:
++	case AuWbrCreate_PMFS:
++	case AuWbrCreate_PMFSV:
++		sbinfo->si_wbr_mfs.mfs_expire
++			= msecs_to_jiffies(create->mfs_second * MSEC_PER_SEC);
++		break;
++	}
++
++	if (sbinfo->si_wbr_create_ops->init)
++		sbinfo->si_wbr_create_ops->init(sb); /* ignore */
++
++	return err;
++}
++
++/*
++ * returns,
++ * plus: processed without an error
++ * zero: unprocessed
++ */
++static int au_opt_simple(struct super_block *sb, struct au_opt *opt,
++			 struct au_opts *opts)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	err = 1; /* handled */
++	sbinfo = au_sbi(sb);
++	switch (opt->type) {
++	case Opt_udba:
++		sbinfo->si_mntflags &= ~AuOptMask_UDBA;
++		sbinfo->si_mntflags |= opt->udba;
++		opts->given_udba |= opt->udba;
++		break;
++
++	case Opt_plink:
++		au_opt_set(sbinfo->si_mntflags, PLINK);
++		break;
++	case Opt_noplink:
++		if (au_opt_test(sbinfo->si_mntflags, PLINK))
++			au_plink_put(sb, /*verbose*/1);
++		au_opt_clr(sbinfo->si_mntflags, PLINK);
++		break;
++	case Opt_list_plink:
++		if (au_opt_test(sbinfo->si_mntflags, PLINK))
++			au_plink_list(sb);
++		break;
++
++	case Opt_dio:
++		au_opt_set(sbinfo->si_mntflags, DIO);
++		au_fset_opts(opts->flags, REFRESH_DYAOP);
++		break;
++	case Opt_nodio:
++		au_opt_clr(sbinfo->si_mntflags, DIO);
++		au_fset_opts(opts->flags, REFRESH_DYAOP);
++		break;
++
++	case Opt_fhsm_sec:
++		au_fhsm_set(sbinfo, opt->fhsm_second);
++		break;
++
++	case Opt_diropq_a:
++		au_opt_set(sbinfo->si_mntflags, ALWAYS_DIROPQ);
++		break;
++	case Opt_diropq_w:
++		au_opt_clr(sbinfo->si_mntflags, ALWAYS_DIROPQ);
++		break;
++
++	case Opt_warn_perm:
++		au_opt_set(sbinfo->si_mntflags, WARN_PERM);
++		break;
++	case Opt_nowarn_perm:
++		au_opt_clr(sbinfo->si_mntflags, WARN_PERM);
++		break;
++
++	case Opt_verbose:
++		au_opt_set(sbinfo->si_mntflags, VERBOSE);
++		break;
++	case Opt_noverbose:
++		au_opt_clr(sbinfo->si_mntflags, VERBOSE);
++		break;
++
++	case Opt_sum:
++		au_opt_set(sbinfo->si_mntflags, SUM);
++		break;
++	case Opt_wsum:
++		au_opt_clr(sbinfo->si_mntflags, SUM);
++		au_opt_set(sbinfo->si_mntflags, SUM_W);
++		break;
++	case Opt_nosum:
++		au_opt_clr(sbinfo->si_mntflags, SUM);
++		au_opt_clr(sbinfo->si_mntflags, SUM_W);
++		break;
++
++	case Opt_wbr_create:
++		err = au_opt_wbr_create(sb, &opt->wbr_create);
++		break;
++	case Opt_wbr_copyup:
++		sbinfo->si_wbr_copyup = opt->wbr_copyup;
++		sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + opt->wbr_copyup;
++		break;
++
++	case Opt_dirwh:
++		sbinfo->si_dirwh = opt->dirwh;
++		break;
++
++	case Opt_rdcache:
++		sbinfo->si_rdcache
++			= msecs_to_jiffies(opt->rdcache * MSEC_PER_SEC);
++		break;
++	case Opt_rdblk:
++		sbinfo->si_rdblk = opt->rdblk;
++		break;
++	case Opt_rdblk_def:
++		sbinfo->si_rdblk = AUFS_RDBLK_DEF;
++		break;
++	case Opt_rdhash:
++		sbinfo->si_rdhash = opt->rdhash;
++		break;
++	case Opt_rdhash_def:
++		sbinfo->si_rdhash = AUFS_RDHASH_DEF;
++		break;
++
++	case Opt_shwh:
++		au_opt_set(sbinfo->si_mntflags, SHWH);
++		break;
++	case Opt_noshwh:
++		au_opt_clr(sbinfo->si_mntflags, SHWH);
++		break;
++
++	case Opt_dirperm1:
++		au_opt_set(sbinfo->si_mntflags, DIRPERM1);
++		break;
++	case Opt_nodirperm1:
++		au_opt_clr(sbinfo->si_mntflags, DIRPERM1);
++		break;
++
++	case Opt_trunc_xino:
++		au_opt_set(sbinfo->si_mntflags, TRUNC_XINO);
++		break;
++	case Opt_notrunc_xino:
++		au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO);
++		break;
++
++	case Opt_trunc_xino_path:
++	case Opt_itrunc_xino:
++		err = au_xino_trunc(sb, opt->xino_itrunc.bindex,
++				    /*idx_begin*/0);
++		if (!err)
++			err = 1;
++		break;
++
++	case Opt_trunc_xib:
++		au_fset_opts(opts->flags, TRUNC_XIB);
++		break;
++	case Opt_notrunc_xib:
++		au_fclr_opts(opts->flags, TRUNC_XIB);
++		break;
++
++	case Opt_dirren:
++		err = 1;
++		if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) {
++			err = au_dr_opt_set(sb);
++			if (!err)
++				err = 1;
++		}
++		if (err == 1)
++			au_opt_set(sbinfo->si_mntflags, DIRREN);
++		break;
++	case Opt_nodirren:
++		err = 1;
++		if (au_opt_test(sbinfo->si_mntflags, DIRREN)) {
++			err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags,
++							      DR_FLUSHED));
++			if (!err)
++				err = 1;
++		}
++		if (err == 1)
++			au_opt_clr(sbinfo->si_mntflags, DIRREN);
++		break;
++
++	case Opt_acl:
++		sb->s_flags |= SB_POSIXACL;
++		break;
++	case Opt_noacl:
++		sb->s_flags &= ~SB_POSIXACL;
++		break;
++
++	default:
++		err = 0;
++		break;
++	}
++
++	return err;
++}
++
++/*
++ * returns tri-state.
++ * plus: processed without an error
++ * zero: unprocessed
++ * minus: error
++ */
++static int au_opt_br(struct super_block *sb, struct au_opt *opt,
++		     struct au_opts *opts)
++{
++	int err, do_refresh;
++
++	err = 0;
++	switch (opt->type) {
++	case Opt_append:
++		opt->add.bindex = au_sbbot(sb) + 1;
++		if (opt->add.bindex < 0)
++			opt->add.bindex = 0;
++		goto add;
++		/* Always goto add, not fallthrough */
++	case Opt_prepend:
++		opt->add.bindex = 0;
++		/* fallthrough */
++	add: /* indented label */
++	case Opt_add:
++		err = au_br_add(sb, &opt->add,
++				au_ftest_opts(opts->flags, REMOUNT));
++		if (!err) {
++			err = 1;
++			au_fset_opts(opts->flags, REFRESH);
++		}
++		break;
++
++	case Opt_del:
++	case Opt_idel:
++		err = au_br_del(sb, &opt->del,
++				au_ftest_opts(opts->flags, REMOUNT));
++		if (!err) {
++			err = 1;
++			au_fset_opts(opts->flags, TRUNC_XIB);
++			au_fset_opts(opts->flags, REFRESH);
++		}
++		break;
++
++	case Opt_mod:
++	case Opt_imod:
++		err = au_br_mod(sb, &opt->mod,
++				au_ftest_opts(opts->flags, REMOUNT),
++				&do_refresh);
++		if (!err) {
++			err = 1;
++			if (do_refresh)
++				au_fset_opts(opts->flags, REFRESH);
++		}
++		break;
++	}
++	return err;
++}
++
++static int au_opt_xino(struct super_block *sb, struct au_opt *opt,
++		       struct au_opt_xino **opt_xino,
++		       struct au_opts *opts)
++{
++	int err;
++
++	err = 0;
++	switch (opt->type) {
++	case Opt_xino:
++		err = au_xino_set(sb, &opt->xino,
++				  !!au_ftest_opts(opts->flags, REMOUNT));
++		if (unlikely(err))
++			break;
++
++		*opt_xino = &opt->xino;
++		break;
++
++	case Opt_noxino:
++		au_xino_clr(sb);
++		*opt_xino = (void *)-1;
++		break;
++	}
++
++	return err;
++}
++
++int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
++		   unsigned int pending)
++{
++	int err, fhsm;
++	aufs_bindex_t bindex, bbot;
++	unsigned char do_plink, skip, do_free, can_no_dreval;
++	struct au_branch *br;
++	struct au_wbr *wbr;
++	struct dentry *root, *dentry;
++	struct inode *dir, *h_dir;
++	struct au_sbinfo *sbinfo;
++	struct au_hinode *hdir;
++
++	SiMustAnyLock(sb);
++
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!(sbinfo->si_mntflags & AuOptMask_UDBA));
++
++	if (!(sb_flags & SB_RDONLY)) {
++		if (unlikely(!au_br_writable(au_sbr_perm(sb, 0))))
++			pr_warn("first branch should be rw\n");
++		if (unlikely(au_opt_test(sbinfo->si_mntflags, SHWH)))
++			pr_warn_once("shwh should be used with ro\n");
++	}
++
++	if (au_opt_test((sbinfo->si_mntflags | pending), UDBA_HNOTIFY)
++	    && !au_opt_test(sbinfo->si_mntflags, XINO))
++		pr_warn_once("udba=*notify requires xino\n");
++
++	if (au_opt_test(sbinfo->si_mntflags, DIRPERM1))
++		pr_warn_once("dirperm1 breaks the protection"
++			     " by the permission bits on the lower branch\n");
++
++	err = 0;
++	fhsm = 0;
++	root = sb->s_root;
++	dir = d_inode(root);
++	do_plink = !!au_opt_test(sbinfo->si_mntflags, PLINK);
++	can_no_dreval = !!au_opt_test((sbinfo->si_mntflags | pending),
++				      UDBA_NONE);
++	bbot = au_sbbot(sb);
++	for (bindex = 0; !err && bindex <= bbot; bindex++) {
++		skip = 0;
++		h_dir = au_h_iptr(dir, bindex);
++		br = au_sbr(sb, bindex);
++
++		if ((br->br_perm & AuBrAttr_ICEX)
++		    && !h_dir->i_op->listxattr)
++			br->br_perm &= ~AuBrAttr_ICEX;
++#if 0
++		if ((br->br_perm & AuBrAttr_ICEX_SEC)
++		    && (au_br_sb(br)->s_flags & SB_NOSEC))
++			br->br_perm &= ~AuBrAttr_ICEX_SEC;
++#endif
++
++		do_free = 0;
++		wbr = br->br_wbr;
++		if (wbr)
++			wbr_wh_read_lock(wbr);
++
++		if (!au_br_writable(br->br_perm)) {
++			do_free = !!wbr;
++			skip = (!wbr
++				|| (!wbr->wbr_whbase
++				    && !wbr->wbr_plink
++				    && !wbr->wbr_orph));
++		} else if (!au_br_wh_linkable(br->br_perm)) {
++			/* skip = (!br->br_whbase && !br->br_orph); */
++			skip = (!wbr || !wbr->wbr_whbase);
++			if (skip && wbr) {
++				if (do_plink)
++					skip = !!wbr->wbr_plink;
++				else
++					skip = !wbr->wbr_plink;
++			}
++		} else {
++			/* skip = (br->br_whbase && br->br_ohph); */
++			skip = (wbr && wbr->wbr_whbase);
++			if (skip) {
++				if (do_plink)
++					skip = !!wbr->wbr_plink;
++				else
++					skip = !wbr->wbr_plink;
++			}
++		}
++		if (wbr)
++			wbr_wh_read_unlock(wbr);
++
++		if (can_no_dreval) {
++			dentry = br->br_path.dentry;
++			spin_lock(&dentry->d_lock);
++			if (dentry->d_flags &
++			    (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE))
++				can_no_dreval = 0;
++			spin_unlock(&dentry->d_lock);
++		}
++
++		if (au_br_fhsm(br->br_perm)) {
++			fhsm++;
++			AuDebugOn(!br->br_fhsm);
++		}
++
++		if (skip)
++			continue;
++
++		hdir = au_hi(dir, bindex);
++		au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
++		if (wbr)
++			wbr_wh_write_lock(wbr);
++		err = au_wh_init(br, sb);
++		if (wbr)
++			wbr_wh_write_unlock(wbr);
++		au_hn_inode_unlock(hdir);
++
++		if (!err && do_free) {
++			au_kfree_rcu(wbr);
++			br->br_wbr = NULL;
++		}
++	}
++
++	if (can_no_dreval)
++		au_fset_si(sbinfo, NO_DREVAL);
++	else
++		au_fclr_si(sbinfo, NO_DREVAL);
++
++	if (fhsm >= 2) {
++		au_fset_si(sbinfo, FHSM);
++		for (bindex = bbot; bindex >= 0; bindex--) {
++			br = au_sbr(sb, bindex);
++			if (au_br_fhsm(br->br_perm)) {
++				au_fhsm_set_bottom(sb, bindex);
++				break;
++			}
++		}
++	} else {
++		au_fclr_si(sbinfo, FHSM);
++		au_fhsm_set_bottom(sb, -1);
++	}
++
++	return err;
++}
++
++int au_opts_mount(struct super_block *sb, struct au_opts *opts)
++{
++	int err;
++	unsigned int tmp;
++	aufs_bindex_t bindex, bbot;
++	struct au_opt *opt;
++	struct au_opt_xino *opt_xino, xino;
++	struct au_sbinfo *sbinfo;
++	struct au_branch *br;
++	struct inode *dir;
++
++	SiMustWriteLock(sb);
++
++	err = 0;
++	opt_xino = NULL;
++	opt = opts->opt;
++	while (err >= 0 && opt->type != Opt_tail)
++		err = au_opt_simple(sb, opt++, opts);
++	if (err > 0)
++		err = 0;
++	else if (unlikely(err < 0))
++		goto out;
++
++	/* disable xino and udba temporary */
++	sbinfo = au_sbi(sb);
++	tmp = sbinfo->si_mntflags;
++	au_opt_clr(sbinfo->si_mntflags, XINO);
++	au_opt_set_udba(sbinfo->si_mntflags, UDBA_REVAL);
++
++	opt = opts->opt;
++	while (err >= 0 && opt->type != Opt_tail)
++		err = au_opt_br(sb, opt++, opts);
++	if (err > 0)
++		err = 0;
++	else if (unlikely(err < 0))
++		goto out;
++
++	bbot = au_sbbot(sb);
++	if (unlikely(bbot < 0)) {
++		err = -EINVAL;
++		pr_err("no branches\n");
++		goto out;
++	}
++
++	if (au_opt_test(tmp, XINO))
++		au_opt_set(sbinfo->si_mntflags, XINO);
++	opt = opts->opt;
++	while (!err && opt->type != Opt_tail)
++		err = au_opt_xino(sb, opt++, &opt_xino, opts);
++	if (unlikely(err))
++		goto out;
++
++	err = au_opts_verify(sb, sb->s_flags, tmp);
++	if (unlikely(err))
++		goto out;
++
++	/* restore xino */
++	if (au_opt_test(tmp, XINO) && !opt_xino) {
++		xino.file = au_xino_def(sb);
++		err = PTR_ERR(xino.file);
++		if (IS_ERR(xino.file))
++			goto out;
++
++		err = au_xino_set(sb, &xino, /*remount*/0);
++		fput(xino.file);
++		if (unlikely(err))
++			goto out;
++	}
++
++	/* restore udba */
++	tmp &= AuOptMask_UDBA;
++	sbinfo->si_mntflags &= ~AuOptMask_UDBA;
++	sbinfo->si_mntflags |= tmp;
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		err = au_hnotify_reset_br(tmp, br, br->br_perm);
++		if (unlikely(err))
++			AuIOErr("hnotify failed on br %d, %d, ignored\n",
++				bindex, err);
++		/* go on even if err */
++	}
++	if (au_opt_test(tmp, UDBA_HNOTIFY)) {
++		dir = d_inode(sb->s_root);
++		au_hn_reset(dir, au_hi_flags(dir, /*isdir*/1) & ~AuHi_XINO);
++	}
++
++out:
++	return err;
++}
++
++int au_opts_remount(struct super_block *sb, struct au_opts *opts)
++{
++	int err, rerr;
++	unsigned char no_dreval;
++	struct inode *dir;
++	struct au_opt_xino *opt_xino;
++	struct au_opt *opt;
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	err = au_dr_opt_flush(sb);
++	if (unlikely(err))
++		goto out;
++	au_fset_opts(opts->flags, DR_FLUSHED);
++
++	dir = d_inode(sb->s_root);
++	sbinfo = au_sbi(sb);
++	opt_xino = NULL;
++	opt = opts->opt;
++	while (err >= 0 && opt->type != Opt_tail) {
++		err = au_opt_simple(sb, opt, opts);
++		if (!err)
++			err = au_opt_br(sb, opt, opts);
++		if (!err)
++			err = au_opt_xino(sb, opt, &opt_xino, opts);
++		opt++;
++	}
++	if (err > 0)
++		err = 0;
++	AuTraceErr(err);
++	/* go on even err */
++
++	no_dreval = !!au_ftest_si(sbinfo, NO_DREVAL);
++	rerr = au_opts_verify(sb, opts->sb_flags, /*pending*/0);
++	if (unlikely(rerr && !err))
++		err = rerr;
++
++	if (no_dreval != !!au_ftest_si(sbinfo, NO_DREVAL))
++		au_fset_opts(opts->flags, REFRESH_IDOP);
++
++	if (au_ftest_opts(opts->flags, TRUNC_XIB)) {
++		rerr = au_xib_trunc(sb);
++		if (unlikely(rerr && !err))
++			err = rerr;
++	}
++
++	/* will be handled by the caller */
++	if (!au_ftest_opts(opts->flags, REFRESH)
++	    && (opts->given_udba
++		|| au_opt_test(sbinfo->si_mntflags, XINO)
++		|| au_ftest_opts(opts->flags, REFRESH_IDOP)
++		    ))
++		au_fset_opts(opts->flags, REFRESH);
++
++	AuDbg("status 0x%x\n", opts->flags);
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++unsigned int au_opt_udba(struct super_block *sb)
++{
++	return au_mntflags(sb) & AuOptMask_UDBA;
++}
+diff -Nurp linux-5.4/fs/aufs/opts.h linux-5.4-aufs/fs/aufs/opts.h
+--- linux-5.4/fs/aufs/opts.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/opts.h	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,212 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * mount options/flags
++ */
++
++#ifndef __AUFS_OPTS_H__
++#define __AUFS_OPTS_H__
++
++#ifdef __KERNEL__
++
++#include <linux/path.h>
++
++struct file;
++
++/* ---------------------------------------------------------------------- */
++
++/* mount flags */
++#define AuOpt_XINO		1		/* external inode number bitmap
++						   and translation table */
++#define AuOpt_TRUNC_XINO	(1 << 1)	/* truncate xino files */
++#define AuOpt_UDBA_NONE		(1 << 2)	/* users direct branch access */
++#define AuOpt_UDBA_REVAL	(1 << 3)
++#define AuOpt_UDBA_HNOTIFY	(1 << 4)
++#define AuOpt_SHWH		(1 << 5)	/* show whiteout */
++#define AuOpt_PLINK		(1 << 6)	/* pseudo-link */
++#define AuOpt_DIRPERM1		(1 << 7)	/* ignore the lower dir's perm
++						   bits */
++#define AuOpt_ALWAYS_DIROPQ	(1 << 9)	/* policy to creating diropq */
++#define AuOpt_SUM		(1 << 10)	/* summation for statfs(2) */
++#define AuOpt_SUM_W		(1 << 11)	/* unimplemented */
++#define AuOpt_WARN_PERM		(1 << 12)	/* warn when add-branch */
++#define AuOpt_VERBOSE		(1 << 13)	/* print the cause of error */
++#define AuOpt_DIO		(1 << 14)	/* direct io */
++#define AuOpt_DIRREN		(1 << 15)	/* directory rename */
++
++#ifndef CONFIG_AUFS_HNOTIFY
++#undef AuOpt_UDBA_HNOTIFY
++#define AuOpt_UDBA_HNOTIFY	0
++#endif
++#ifndef CONFIG_AUFS_DIRREN
++#undef AuOpt_DIRREN
++#define AuOpt_DIRREN		0
++#endif
++#ifndef CONFIG_AUFS_SHWH
++#undef AuOpt_SHWH
++#define AuOpt_SHWH		0
++#endif
++
++#define AuOpt_Def	(AuOpt_XINO \
++			 | AuOpt_UDBA_REVAL \
++			 | AuOpt_PLINK \
++			 /* | AuOpt_DIRPERM1 */ \
++			 | AuOpt_WARN_PERM)
++#define AuOptMask_UDBA	(AuOpt_UDBA_NONE \
++			 | AuOpt_UDBA_REVAL \
++			 | AuOpt_UDBA_HNOTIFY)
++
++#define au_opt_test(flags, name)	(flags & AuOpt_##name)
++#define au_opt_set(flags, name) do { \
++	BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \
++	((flags) |= AuOpt_##name); \
++} while (0)
++#define au_opt_set_udba(flags, name) do { \
++	(flags) &= ~AuOptMask_UDBA; \
++	((flags) |= AuOpt_##name); \
++} while (0)
++#define au_opt_clr(flags, name) do { \
++	((flags) &= ~AuOpt_##name); \
++} while (0)
++
++static inline unsigned int au_opts_plink(unsigned int mntflags)
++{
++#ifdef CONFIG_PROC_FS
++	return mntflags;
++#else
++	return mntflags & ~AuOpt_PLINK;
++#endif
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* policies to select one among multiple writable branches */
++enum {
++	AuWbrCreate_TDP,	/* top down parent */
++	AuWbrCreate_RR,		/* round robin */
++	AuWbrCreate_MFS,	/* most free space */
++	AuWbrCreate_MFSV,	/* mfs with seconds */
++	AuWbrCreate_MFSRR,	/* mfs then rr */
++	AuWbrCreate_MFSRRV,	/* mfs then rr with seconds */
++	AuWbrCreate_TDMFS,	/* top down regardless parent and mfs */
++	AuWbrCreate_TDMFSV,	/* top down regardless parent and mfs */
++	AuWbrCreate_PMFS,	/* parent and mfs */
++	AuWbrCreate_PMFSV,	/* parent and mfs with seconds */
++	AuWbrCreate_PMFSRR,	/* parent, mfs and round-robin */
++	AuWbrCreate_PMFSRRV,	/* plus seconds */
++
++	AuWbrCreate_Def = AuWbrCreate_TDP
++};
++
++enum {
++	AuWbrCopyup_TDP,	/* top down parent */
++	AuWbrCopyup_BUP,	/* bottom up parent */
++	AuWbrCopyup_BU,		/* bottom up */
++
++	AuWbrCopyup_Def = AuWbrCopyup_TDP
++};
++
++/* ---------------------------------------------------------------------- */
++
++struct au_opt_add {
++	aufs_bindex_t	bindex;
++	char		*pathname;
++	int		perm;
++	struct path	path;
++};
++
++struct au_opt_del {
++	char		*pathname;
++	struct path	h_path;
++};
++
++struct au_opt_mod {
++	char		*path;
++	int		perm;
++	struct dentry	*h_root;
++};
++
++struct au_opt_xino {
++	char		*path;
++	struct file	*file;
++};
++
++struct au_opt_xino_itrunc {
++	aufs_bindex_t	bindex;
++};
++
++struct au_opt_wbr_create {
++	int			wbr_create;
++	int			mfs_second;
++	unsigned long long	mfsrr_watermark;
++};
++
++struct au_opt {
++	int type;
++	union {
++		struct au_opt_xino	xino;
++		struct au_opt_xino_itrunc xino_itrunc;
++		struct au_opt_add	add;
++		struct au_opt_del	del;
++		struct au_opt_mod	mod;
++		int			dirwh;
++		int			rdcache;
++		unsigned int		rdblk;
++		unsigned int		rdhash;
++		int			udba;
++		struct au_opt_wbr_create wbr_create;
++		int			wbr_copyup;
++		unsigned int		fhsm_second;
++	};
++};
++
++/* opts flags */
++#define AuOpts_REMOUNT		1
++#define AuOpts_REFRESH		(1 << 1)
++#define AuOpts_TRUNC_XIB	(1 << 2)
++#define AuOpts_REFRESH_DYAOP	(1 << 3)
++#define AuOpts_REFRESH_IDOP	(1 << 4)
++#define AuOpts_DR_FLUSHED	(1 << 5)
++#define au_ftest_opts(flags, name)	((flags) & AuOpts_##name)
++#define au_fset_opts(flags, name) \
++	do { (flags) |= AuOpts_##name; } while (0)
++#define au_fclr_opts(flags, name) \
++	do { (flags) &= ~AuOpts_##name; } while (0)
++
++#ifndef CONFIG_AUFS_DIRREN
++#undef AuOpts_DR_FLUSHED
++#define AuOpts_DR_FLUSHED	0
++#endif
++
++struct au_opts {
++	struct au_opt	*opt;
++	int		max_opt;
++
++	unsigned int	given_udba;
++	unsigned int	flags;
++	unsigned long	sb_flags;
++};
++
++/* ---------------------------------------------------------------------- */
++
++/* opts.c */
++void au_optstr_br_perm(au_br_perm_str_t *str, int perm);
++const char *au_optstr_udba(int udba);
++const char *au_optstr_wbr_copyup(int wbr_copyup);
++const char *au_optstr_wbr_create(int wbr_create);
++
++void au_opts_free(struct au_opts *opts);
++struct super_block;
++int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts);
++int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
++		   unsigned int pending);
++int au_opts_mount(struct super_block *sb, struct au_opts *opts);
++int au_opts_remount(struct super_block *sb, struct au_opts *opts);
++
++unsigned int au_opt_udba(struct super_block *sb);
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_OPTS_H__ */
+diff -Nurp linux-5.4/fs/aufs/plink.c linux-5.4-aufs/fs/aufs/plink.c
+--- linux-5.4/fs/aufs/plink.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/plink.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,503 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * pseudo-link
++ */
++
++#include "aufs.h"
++
++/*
++ * the pseudo-link maintenance mode.
++ * during a user process maintains the pseudo-links,
++ * prohibit adding a new plink and branch manipulation.
++ *
++ * Flags
++ * NOPLM:
++ *	For entry functions which will handle plink, and i_mutex is already held
++ *	in VFS.
++ *	They cannot wait and should return an error at once.
++ *	Callers has to check the error.
++ * NOPLMW:
++ *	For entry functions which will handle plink, but i_mutex is not held
++ *	in VFS.
++ *	They can wait the plink maintenance mode to finish.
++ *
++ * They behave like F_SETLK and F_SETLKW.
++ * If the caller never handle plink, then both flags are unnecessary.
++ */
++
++int au_plink_maint(struct super_block *sb, int flags)
++{
++	int err;
++	pid_t pid, ppid;
++	struct task_struct *parent, *prev;
++	struct au_sbinfo *sbi;
++
++	SiMustAnyLock(sb);
++
++	err = 0;
++	if (!au_opt_test(au_mntflags(sb), PLINK))
++		goto out;
++
++	sbi = au_sbi(sb);
++	pid = sbi->si_plink_maint_pid;
++	if (!pid || pid == current->pid)
++		goto out;
++
++	/* todo: it highly depends upon /sbin/mount.aufs */
++	prev = NULL;
++	parent = current;
++	ppid = 0;
++	rcu_read_lock();
++	while (1) {
++		parent = rcu_dereference(parent->real_parent);
++		if (parent == prev)
++			break;
++		ppid = task_pid_vnr(parent);
++		if (pid == ppid) {
++			rcu_read_unlock();
++			goto out;
++		}
++		prev = parent;
++	}
++	rcu_read_unlock();
++
++	if (au_ftest_lock(flags, NOPLMW)) {
++		/* if there is no i_mutex lock in VFS, we don't need to wait */
++		/* AuDebugOn(!lockdep_depth(current)); */
++		while (sbi->si_plink_maint_pid) {
++			si_read_unlock(sb);
++			/* gave up wake_up_bit() */
++			wait_event(sbi->si_plink_wq, !sbi->si_plink_maint_pid);
++
++			if (au_ftest_lock(flags, FLUSH))
++				au_nwt_flush(&sbi->si_nowait);
++			si_noflush_read_lock(sb);
++		}
++	} else if (au_ftest_lock(flags, NOPLM)) {
++		AuDbg("ppid %d, pid %d\n", ppid, pid);
++		err = -EAGAIN;
++	}
++
++out:
++	return err;
++}
++
++void au_plink_maint_leave(struct au_sbinfo *sbinfo)
++{
++	spin_lock(&sbinfo->si_plink_maint_lock);
++	sbinfo->si_plink_maint_pid = 0;
++	spin_unlock(&sbinfo->si_plink_maint_lock);
++	wake_up_all(&sbinfo->si_plink_wq);
++}
++
++int au_plink_maint_enter(struct super_block *sb)
++{
++	int err;
++	struct au_sbinfo *sbinfo;
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	/* make sure i am the only one in this fs */
++	si_write_lock(sb, AuLock_FLUSH);
++	if (au_opt_test(au_mntflags(sb), PLINK)) {
++		spin_lock(&sbinfo->si_plink_maint_lock);
++		if (!sbinfo->si_plink_maint_pid)
++			sbinfo->si_plink_maint_pid = current->pid;
++		else
++			err = -EBUSY;
++		spin_unlock(&sbinfo->si_plink_maint_lock);
++	}
++	si_write_unlock(sb);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_DEBUG
++void au_plink_list(struct super_block *sb)
++{
++	int i;
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_icntnr *icntnr;
++
++	SiMustAnyLock(sb);
++
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
++	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
++
++	for (i = 0; i < AuPlink_NHASH; i++) {
++		hbl = sbinfo->si_plink + i;
++		hlist_bl_lock(hbl);
++		hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
++			AuDbg("%lu\n", icntnr->vfs_inode.i_ino);
++		hlist_bl_unlock(hbl);
++	}
++}
++#endif
++
++/* is the inode pseudo-linked? */
++int au_plink_test(struct inode *inode)
++{
++	int found, i;
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_icntnr *icntnr;
++
++	sbinfo = au_sbi(inode->i_sb);
++	AuRwMustAnyLock(&sbinfo->si_rwsem);
++	AuDebugOn(!au_opt_test(au_mntflags(inode->i_sb), PLINK));
++	AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
++
++	found = 0;
++	i = au_plink_hash(inode->i_ino);
++	hbl =  sbinfo->si_plink + i;
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
++		if (&icntnr->vfs_inode == inode) {
++			found = 1;
++			break;
++		}
++	hlist_bl_unlock(hbl);
++	return found;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * generate a name for plink.
++ * the file will be stored under AUFS_WH_PLINKDIR.
++ */
++/* 20 is max digits length of ulong 64 */
++#define PLINK_NAME_LEN	((20 + 1) * 2)
++
++static int plink_name(char *name, int len, struct inode *inode,
++		      aufs_bindex_t bindex)
++{
++	int rlen;
++	struct inode *h_inode;
++
++	h_inode = au_h_iptr(inode, bindex);
++	rlen = snprintf(name, len, "%lu.%lu", inode->i_ino, h_inode->i_ino);
++	return rlen;
++}
++
++struct au_do_plink_lkup_args {
++	struct dentry **errp;
++	struct qstr *tgtname;
++	struct dentry *h_parent;
++	struct au_branch *br;
++};
++
++static struct dentry *au_do_plink_lkup(struct qstr *tgtname,
++				       struct dentry *h_parent,
++				       struct au_branch *br)
++{
++	struct dentry *h_dentry;
++	struct inode *h_inode;
++
++	h_inode = d_inode(h_parent);
++	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2);
++	h_dentry = vfsub_lkup_one(tgtname, h_parent);
++	inode_unlock_shared(h_inode);
++	return h_dentry;
++}
++
++static void au_call_do_plink_lkup(void *args)
++{
++	struct au_do_plink_lkup_args *a = args;
++	*a->errp = au_do_plink_lkup(a->tgtname, a->h_parent, a->br);
++}
++
++/* lookup the plink-ed @inode under the branch at @bindex */
++struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex)
++{
++	struct dentry *h_dentry, *h_parent;
++	struct au_branch *br;
++	int wkq_err;
++	char a[PLINK_NAME_LEN];
++	struct qstr tgtname = QSTR_INIT(a, 0);
++
++	AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
++
++	br = au_sbr(inode->i_sb, bindex);
++	h_parent = br->br_wbr->wbr_plink;
++	tgtname.len = plink_name(a, sizeof(a), inode, bindex);
++
++	if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
++		struct au_do_plink_lkup_args args = {
++			.errp		= &h_dentry,
++			.tgtname	= &tgtname,
++			.h_parent	= h_parent,
++			.br		= br
++		};
++
++		wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args);
++		if (unlikely(wkq_err))
++			h_dentry = ERR_PTR(wkq_err);
++	} else
++		h_dentry = au_do_plink_lkup(&tgtname, h_parent, br);
++
++	return h_dentry;
++}
++
++/* create a pseudo-link */
++static int do_whplink(struct qstr *tgt, struct dentry *h_parent,
++		      struct dentry *h_dentry, struct au_branch *br)
++{
++	int err;
++	struct path h_path = {
++		.mnt = au_br_mnt(br)
++	};
++	struct inode *h_dir, *delegated;
++
++	h_dir = d_inode(h_parent);
++	inode_lock_nested(h_dir, AuLsc_I_CHILD2);
++again:
++	h_path.dentry = vfsub_lkup_one(tgt, h_parent);
++	err = PTR_ERR(h_path.dentry);
++	if (IS_ERR(h_path.dentry))
++		goto out;
++
++	err = 0;
++	/* wh.plink dir is not monitored */
++	/* todo: is it really safe? */
++	if (d_is_positive(h_path.dentry)
++	    && d_inode(h_path.dentry) != d_inode(h_dentry)) {
++		delegated = NULL;
++		err = vfsub_unlink(h_dir, &h_path, &delegated, /*force*/0);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal unlink\n");
++			iput(delegated);
++		}
++		dput(h_path.dentry);
++		h_path.dentry = NULL;
++		if (!err)
++			goto again;
++	}
++	if (!err && d_is_negative(h_path.dentry)) {
++		delegated = NULL;
++		err = vfsub_link(h_dentry, h_dir, &h_path, &delegated);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal link\n");
++			iput(delegated);
++		}
++	}
++	dput(h_path.dentry);
++
++out:
++	inode_unlock(h_dir);
++	return err;
++}
++
++struct do_whplink_args {
++	int *errp;
++	struct qstr *tgt;
++	struct dentry *h_parent;
++	struct dentry *h_dentry;
++	struct au_branch *br;
++};
++
++static void call_do_whplink(void *args)
++{
++	struct do_whplink_args *a = args;
++	*a->errp = do_whplink(a->tgt, a->h_parent, a->h_dentry, a->br);
++}
++
++static int whplink(struct dentry *h_dentry, struct inode *inode,
++		   aufs_bindex_t bindex, struct au_branch *br)
++{
++	int err, wkq_err;
++	struct au_wbr *wbr;
++	struct dentry *h_parent;
++	char a[PLINK_NAME_LEN];
++	struct qstr tgtname = QSTR_INIT(a, 0);
++
++	wbr = au_sbr(inode->i_sb, bindex)->br_wbr;
++	h_parent = wbr->wbr_plink;
++	tgtname.len = plink_name(a, sizeof(a), inode, bindex);
++
++	/* always superio. */
++	if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
++		struct do_whplink_args args = {
++			.errp		= &err,
++			.tgt		= &tgtname,
++			.h_parent	= h_parent,
++			.h_dentry	= h_dentry,
++			.br		= br
++		};
++		wkq_err = au_wkq_wait(call_do_whplink, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	} else
++		err = do_whplink(&tgtname, h_parent, h_dentry, br);
++
++	return err;
++}
++
++/*
++ * create a new pseudo-link for @h_dentry on @bindex.
++ * the linked inode is held in aufs @inode.
++ */
++void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
++		     struct dentry *h_dentry)
++{
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_icntnr *icntnr;
++	int found, err, cnt, i;
++
++	sb = inode->i_sb;
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
++	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
++
++	found = au_plink_test(inode);
++	if (found)
++		return;
++
++	i = au_plink_hash(inode->i_ino);
++	hbl = sbinfo->si_plink + i;
++	au_igrab(inode);
++
++	hlist_bl_lock(hbl);
++	hlist_bl_for_each_entry(icntnr, pos, hbl, plink) {
++		if (&icntnr->vfs_inode == inode) {
++			found = 1;
++			break;
++		}
++	}
++	if (!found) {
++		icntnr = container_of(inode, struct au_icntnr, vfs_inode);
++		hlist_bl_add_head(&icntnr->plink, hbl);
++	}
++	hlist_bl_unlock(hbl);
++	if (!found) {
++		cnt = au_hbl_count(hbl);
++#define msg "unexpectedly unbalanced or too many pseudo-links"
++		if (cnt > AUFS_PLINK_WARN)
++			AuWarn1(msg ", %d\n", cnt);
++#undef msg
++		err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex));
++		if (unlikely(err)) {
++			pr_warn("err %d, damaged pseudo link.\n", err);
++			au_hbl_del(&icntnr->plink, hbl);
++			iput(&icntnr->vfs_inode);
++		}
++	} else
++		iput(&icntnr->vfs_inode);
++}
++
++/* free all plinks */
++void au_plink_put(struct super_block *sb, int verbose)
++{
++	int i, warned;
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos, *tmp;
++	struct au_icntnr *icntnr;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
++	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
++
++	/* no spin_lock since sbinfo is write-locked */
++	warned = 0;
++	for (i = 0; i < AuPlink_NHASH; i++) {
++		hbl = sbinfo->si_plink + i;
++		if (!warned && verbose && !hlist_bl_empty(hbl)) {
++			pr_warn("pseudo-link is not flushed");
++			warned = 1;
++		}
++		hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink)
++			iput(&icntnr->vfs_inode);
++		INIT_HLIST_BL_HEAD(hbl);
++	}
++}
++
++void au_plink_clean(struct super_block *sb, int verbose)
++{
++	struct dentry *root;
++
++	root = sb->s_root;
++	aufs_write_lock(root);
++	if (au_opt_test(au_mntflags(sb), PLINK))
++		au_plink_put(sb, verbose);
++	aufs_write_unlock(root);
++}
++
++static int au_plink_do_half_refresh(struct inode *inode, aufs_bindex_t br_id)
++{
++	int do_put;
++	aufs_bindex_t btop, bbot, bindex;
++
++	do_put = 0;
++	btop = au_ibtop(inode);
++	bbot = au_ibbot(inode);
++	if (btop >= 0) {
++		for (bindex = btop; bindex <= bbot; bindex++) {
++			if (!au_h_iptr(inode, bindex)
++			    || au_ii_br_id(inode, bindex) != br_id)
++				continue;
++			au_set_h_iptr(inode, bindex, NULL, 0);
++			do_put = 1;
++			break;
++		}
++		if (do_put)
++			for (bindex = btop; bindex <= bbot; bindex++)
++				if (au_h_iptr(inode, bindex)) {
++					do_put = 0;
++					break;
++				}
++	} else
++		do_put = 1;
++
++	return do_put;
++}
++
++/* free the plinks on a branch specified by @br_id */
++void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id)
++{
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos, *tmp;
++	struct au_icntnr *icntnr;
++	struct inode *inode;
++	int i, do_put;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
++	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
++
++	/* no bit_lock since sbinfo is write-locked */
++	for (i = 0; i < AuPlink_NHASH; i++) {
++		hbl = sbinfo->si_plink + i;
++		hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) {
++			inode = au_igrab(&icntnr->vfs_inode);
++			ii_write_lock_child(inode);
++			do_put = au_plink_do_half_refresh(inode, br_id);
++			if (do_put) {
++				hlist_bl_del(&icntnr->plink);
++				iput(inode);
++			}
++			ii_write_unlock(inode);
++			iput(inode);
++		}
++	}
++}
+diff -Nurp linux-5.4/fs/aufs/poll.c linux-5.4-aufs/fs/aufs/poll.c
+--- linux-5.4/fs/aufs/poll.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/poll.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,38 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * poll operation
++ * There is only one filesystem which implements ->poll operation, currently.
++ */
++
++#include "aufs.h"
++
++__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt)
++{
++	__poll_t mask;
++	struct file *h_file;
++	struct super_block *sb;
++
++	/* We should pretend an error happened. */
++	mask = EPOLLERR /* | EPOLLIN | EPOLLOUT */;
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
++
++	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
++	if (IS_ERR(h_file)) {
++		AuDbg("h_file %ld\n", PTR_ERR(h_file));
++		goto out;
++	}
++
++	mask = vfs_poll(h_file, pt);
++	fput(h_file); /* instead of au_read_post() */
++
++out:
++	si_read_unlock(sb);
++	if (mask & EPOLLERR)
++		AuDbg("mask 0x%x\n", mask);
++	return mask;
++}
+diff -Nurp linux-5.4/fs/aufs/posix_acl.c linux-5.4-aufs/fs/aufs/posix_acl.c
+--- linux-5.4/fs/aufs/posix_acl.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/posix_acl.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,92 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2014-2019 Junjiro R. Okajima
++ */
++
++/*
++ * posix acl operations
++ */
++
++#include <linux/fs.h>
++#include "aufs.h"
++
++struct posix_acl *aufs_get_acl(struct inode *inode, int type)
++{
++	struct posix_acl *acl;
++	int err;
++	aufs_bindex_t bindex;
++	struct inode *h_inode;
++	struct super_block *sb;
++
++	acl = NULL;
++	sb = inode->i_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	ii_read_lock_child(inode);
++	if (!(sb->s_flags & SB_POSIXACL))
++		goto out;
++
++	bindex = au_ibtop(inode);
++	h_inode = au_h_iptr(inode, bindex);
++	if (unlikely(!h_inode
++		     || ((h_inode->i_mode & S_IFMT)
++			 != (inode->i_mode & S_IFMT)))) {
++		err = au_busy_or_stale();
++		acl = ERR_PTR(err);
++		goto out;
++	}
++
++	/* always topmost only */
++	acl = get_acl(h_inode, type);
++	if (IS_ERR(acl))
++		forget_cached_acl(inode, type);
++	else
++		set_cached_acl(inode, type, acl);
++
++out:
++	ii_read_unlock(inode);
++	si_read_unlock(sb);
++
++	AuTraceErrPtr(acl);
++	return acl;
++}
++
++int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
++{
++	int err;
++	ssize_t ssz;
++	struct dentry *dentry;
++	struct au_sxattr arg = {
++		.type = AU_ACL_SET,
++		.u.acl_set = {
++			.acl	= acl,
++			.type	= type
++		},
++	};
++
++	IMustLock(inode);
++
++	if (inode->i_ino == AUFS_ROOT_INO)
++		dentry = dget(inode->i_sb->s_root);
++	else {
++		dentry = d_find_alias(inode);
++		if (!dentry)
++			dentry = d_find_any_alias(inode);
++		if (!dentry) {
++			pr_warn("cannot handle this inode, "
++				"please report to aufs-users ML\n");
++			err = -ENOENT;
++			goto out;
++		}
++	}
++
++	ssz = au_sxattr(dentry, inode, &arg);
++	/* forget even it if succeeds since the branch might set differently */
++	forget_cached_acl(inode, type);
++	dput(dentry);
++	err = ssz;
++	if (ssz >= 0)
++		err = 0;
++
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/procfs.c linux-5.4-aufs/fs/aufs/procfs.c
+--- linux-5.4/fs/aufs/procfs.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/procfs.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,158 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2010-2019 Junjiro R. Okajima
++ */
++
++/*
++ * procfs interfaces
++ */
++
++#include <linux/proc_fs.h>
++#include "aufs.h"
++
++static int au_procfs_plm_release(struct inode *inode, struct file *file)
++{
++	struct au_sbinfo *sbinfo;
++
++	sbinfo = file->private_data;
++	if (sbinfo) {
++		au_plink_maint_leave(sbinfo);
++		kobject_put(&sbinfo->si_kobj);
++	}
++
++	return 0;
++}
++
++static void au_procfs_plm_write_clean(struct file *file)
++{
++	struct au_sbinfo *sbinfo;
++
++	sbinfo = file->private_data;
++	if (sbinfo)
++		au_plink_clean(sbinfo->si_sb, /*verbose*/0);
++}
++
++static int au_procfs_plm_write_si(struct file *file, unsigned long id)
++{
++	int err;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_node *pos;
++
++	err = -EBUSY;
++	if (unlikely(file->private_data))
++		goto out;
++
++	sb = NULL;
++	/* don't use au_sbilist_lock() here */
++	hlist_bl_lock(&au_sbilist);
++	hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
++		if (id == sysaufs_si_id(sbinfo)) {
++			if (kobject_get_unless_zero(&sbinfo->si_kobj))
++				sb = sbinfo->si_sb;
++			break;
++		}
++	hlist_bl_unlock(&au_sbilist);
++
++	err = -EINVAL;
++	if (unlikely(!sb))
++		goto out;
++
++	err = au_plink_maint_enter(sb);
++	if (!err)
++		/* keep kobject_get() */
++		file->private_data = sbinfo;
++	else
++		kobject_put(&sbinfo->si_kobj);
++out:
++	return err;
++}
++
++/*
++ * Accept a valid "si=xxxx" only.
++ * Once it is accepted successfully, accept "clean" too.
++ */
++static ssize_t au_procfs_plm_write(struct file *file, const char __user *ubuf,
++				   size_t count, loff_t *ppos)
++{
++	ssize_t err;
++	unsigned long id;
++	/* last newline is allowed */
++	char buf[3 + sizeof(unsigned long) * 2 + 1];
++
++	err = -EACCES;
++	if (unlikely(!capable(CAP_SYS_ADMIN)))
++		goto out;
++
++	err = -EINVAL;
++	if (unlikely(count > sizeof(buf)))
++		goto out;
++
++	err = copy_from_user(buf, ubuf, count);
++	if (unlikely(err)) {
++		err = -EFAULT;
++		goto out;
++	}
++	buf[count] = 0;
++
++	err = -EINVAL;
++	if (!strcmp("clean", buf)) {
++		au_procfs_plm_write_clean(file);
++		goto out_success;
++	} else if (unlikely(strncmp("si=", buf, 3)))
++		goto out;
++
++	err = kstrtoul(buf + 3, 16, &id);
++	if (unlikely(err))
++		goto out;
++
++	err = au_procfs_plm_write_si(file, id);
++	if (unlikely(err))
++		goto out;
++
++out_success:
++	err = count; /* success */
++out:
++	return err;
++}
++
++static const struct file_operations au_procfs_plm_fop = {
++	.write		= au_procfs_plm_write,
++	.release	= au_procfs_plm_release,
++	.owner		= THIS_MODULE
++};
++
++/* ---------------------------------------------------------------------- */
++
++static struct proc_dir_entry *au_procfs_dir;
++
++void au_procfs_fin(void)
++{
++	remove_proc_entry(AUFS_PLINK_MAINT_NAME, au_procfs_dir);
++	remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
++}
++
++int __init au_procfs_init(void)
++{
++	int err;
++	struct proc_dir_entry *entry;
++
++	err = -ENOMEM;
++	au_procfs_dir = proc_mkdir(AUFS_PLINK_MAINT_DIR, NULL);
++	if (unlikely(!au_procfs_dir))
++		goto out;
++
++	entry = proc_create(AUFS_PLINK_MAINT_NAME, S_IFREG | 0200,
++			    au_procfs_dir, &au_procfs_plm_fop);
++	if (unlikely(!entry))
++		goto out_dir;
++
++	err = 0;
++	goto out; /* success */
++
++
++out_dir:
++	remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/rdu.c linux-5.4-aufs/fs/aufs/rdu.c
+--- linux-5.4/fs/aufs/rdu.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/rdu.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,371 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * readdir in userspace.
++ */
++
++#include <linux/compat.h>
++#include <linux/fs_stack.h>
++#include <linux/security.h>
++#include "aufs.h"
++
++/* bits for struct aufs_rdu.flags */
++#define	AuRdu_CALLED	1
++#define	AuRdu_CONT	(1 << 1)
++#define	AuRdu_FULL	(1 << 2)
++#define au_ftest_rdu(flags, name)	((flags) & AuRdu_##name)
++#define au_fset_rdu(flags, name) \
++	do { (flags) |= AuRdu_##name; } while (0)
++#define au_fclr_rdu(flags, name) \
++	do { (flags) &= ~AuRdu_##name; } while (0)
++
++struct au_rdu_arg {
++	struct dir_context		ctx;
++	struct aufs_rdu			*rdu;
++	union au_rdu_ent_ul		ent;
++	unsigned long			end;
++
++	struct super_block		*sb;
++	int				err;
++};
++
++static int au_rdu_fill(struct dir_context *ctx, const char *name, int nlen,
++		       loff_t offset, u64 h_ino, unsigned int d_type)
++{
++	int err, len;
++	struct au_rdu_arg *arg = container_of(ctx, struct au_rdu_arg, ctx);
++	struct aufs_rdu *rdu = arg->rdu;
++	struct au_rdu_ent ent;
++
++	err = 0;
++	arg->err = 0;
++	au_fset_rdu(rdu->cookie.flags, CALLED);
++	len = au_rdu_len(nlen);
++	if (arg->ent.ul + len  < arg->end) {
++		ent.ino = h_ino;
++		ent.bindex = rdu->cookie.bindex;
++		ent.type = d_type;
++		ent.nlen = nlen;
++		if (unlikely(nlen > AUFS_MAX_NAMELEN))
++			ent.type = DT_UNKNOWN;
++
++		/* unnecessary to support mmap_sem since this is a dir */
++		err = -EFAULT;
++		if (copy_to_user(arg->ent.e, &ent, sizeof(ent)))
++			goto out;
++		if (copy_to_user(arg->ent.e->name, name, nlen))
++			goto out;
++		/* the terminating NULL */
++		if (__put_user(0, arg->ent.e->name + nlen))
++			goto out;
++		err = 0;
++		/* AuDbg("%p, %.*s\n", arg->ent.p, nlen, name); */
++		arg->ent.ul += len;
++		rdu->rent++;
++	} else {
++		err = -EFAULT;
++		au_fset_rdu(rdu->cookie.flags, FULL);
++		rdu->full = 1;
++		rdu->tail = arg->ent;
++	}
++
++out:
++	/* AuTraceErr(err); */
++	return err;
++}
++
++static int au_rdu_do(struct file *h_file, struct au_rdu_arg *arg)
++{
++	int err;
++	loff_t offset;
++	struct au_rdu_cookie *cookie = &arg->rdu->cookie;
++
++	/* we don't have to care (FMODE_32BITHASH | FMODE_64BITHASH) for ext4 */
++	offset = vfsub_llseek(h_file, cookie->h_pos, SEEK_SET);
++	err = offset;
++	if (unlikely(offset != cookie->h_pos))
++		goto out;
++
++	err = 0;
++	do {
++		arg->err = 0;
++		au_fclr_rdu(cookie->flags, CALLED);
++		/* smp_mb(); */
++		err = vfsub_iterate_dir(h_file, &arg->ctx);
++		if (err >= 0)
++			err = arg->err;
++	} while (!err
++		 && au_ftest_rdu(cookie->flags, CALLED)
++		 && !au_ftest_rdu(cookie->flags, FULL));
++	cookie->h_pos = h_file->f_pos;
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_rdu(struct file *file, struct aufs_rdu *rdu)
++{
++	int err;
++	aufs_bindex_t bbot;
++	struct au_rdu_arg arg = {
++		.ctx = {
++			.actor = au_rdu_fill
++		}
++	};
++	struct dentry *dentry;
++	struct inode *inode;
++	struct file *h_file;
++	struct au_rdu_cookie *cookie = &rdu->cookie;
++
++	/* VERIFY_WRITE */
++	err = !access_ok(rdu->ent.e, rdu->sz);
++	if (unlikely(err)) {
++		err = -EFAULT;
++		AuTraceErr(err);
++		goto out;
++	}
++	rdu->rent = 0;
++	rdu->tail = rdu->ent;
++	rdu->full = 0;
++	arg.rdu = rdu;
++	arg.ent = rdu->ent;
++	arg.end = arg.ent.ul;
++	arg.end += rdu->sz;
++
++	err = -ENOTDIR;
++	if (unlikely(!file->f_op->iterate && !file->f_op->iterate_shared))
++		goto out;
++
++	err = security_file_permission(file, MAY_READ);
++	AuTraceErr(err);
++	if (unlikely(err))
++		goto out;
++
++	dentry = file->f_path.dentry;
++	inode = d_inode(dentry);
++	inode_lock_shared(inode);
++
++	arg.sb = inode->i_sb;
++	err = si_read_lock(arg.sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out_mtx;
++	err = au_alive_dir(dentry);
++	if (unlikely(err))
++		goto out_si;
++	/* todo: reval? */
++	fi_read_lock(file);
++
++	err = -EAGAIN;
++	if (unlikely(au_ftest_rdu(cookie->flags, CONT)
++		     && cookie->generation != au_figen(file)))
++		goto out_unlock;
++
++	err = 0;
++	if (!rdu->blk) {
++		rdu->blk = au_sbi(arg.sb)->si_rdblk;
++		if (!rdu->blk)
++			rdu->blk = au_dir_size(file, /*dentry*/NULL);
++	}
++	bbot = au_fbtop(file);
++	if (cookie->bindex < bbot)
++		cookie->bindex = bbot;
++	bbot = au_fbbot_dir(file);
++	/* AuDbg("b%d, b%d\n", cookie->bindex, bbot); */
++	for (; !err && cookie->bindex <= bbot;
++	     cookie->bindex++, cookie->h_pos = 0) {
++		h_file = au_hf_dir(file, cookie->bindex);
++		if (!h_file)
++			continue;
++
++		au_fclr_rdu(cookie->flags, FULL);
++		err = au_rdu_do(h_file, &arg);
++		AuTraceErr(err);
++		if (unlikely(au_ftest_rdu(cookie->flags, FULL) || err))
++			break;
++	}
++	AuDbg("rent %llu\n", rdu->rent);
++
++	if (!err && !au_ftest_rdu(cookie->flags, CONT)) {
++		rdu->shwh = !!au_opt_test(au_sbi(arg.sb)->si_mntflags, SHWH);
++		au_fset_rdu(cookie->flags, CONT);
++		cookie->generation = au_figen(file);
++	}
++
++	ii_read_lock_child(inode);
++	fsstack_copy_attr_atime(inode, au_h_iptr(inode, au_ibtop(inode)));
++	ii_read_unlock(inode);
++
++out_unlock:
++	fi_read_unlock(file);
++out_si:
++	si_read_unlock(arg.sb);
++out_mtx:
++	inode_unlock_shared(inode);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_rdu_ino(struct file *file, struct aufs_rdu *rdu)
++{
++	int err;
++	ino_t ino;
++	unsigned long long nent;
++	union au_rdu_ent_ul *u;
++	struct au_rdu_ent ent;
++	struct super_block *sb;
++
++	err = 0;
++	nent = rdu->nent;
++	u = &rdu->ent;
++	sb = file->f_path.dentry->d_sb;
++	si_read_lock(sb, AuLock_FLUSH);
++	while (nent-- > 0) {
++		/* unnecessary to support mmap_sem since this is a dir */
++		err = copy_from_user(&ent, u->e, sizeof(ent));
++		if (!err)
++			/* VERIFY_WRITE */
++			err = !access_ok(&u->e->ino, sizeof(ino));
++		if (unlikely(err)) {
++			err = -EFAULT;
++			AuTraceErr(err);
++			break;
++		}
++
++		/* AuDbg("b%d, i%llu\n", ent.bindex, ent.ino); */
++		if (!ent.wh)
++			err = au_ino(sb, ent.bindex, ent.ino, ent.type, &ino);
++		else
++			err = au_wh_ino(sb, ent.bindex, ent.ino, ent.type,
++					&ino);
++		if (unlikely(err)) {
++			AuTraceErr(err);
++			break;
++		}
++
++		err = __put_user(ino, &u->e->ino);
++		if (unlikely(err)) {
++			err = -EFAULT;
++			AuTraceErr(err);
++			break;
++		}
++		u->ul += au_rdu_len(ent.nlen);
++	}
++	si_read_unlock(sb);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_rdu_verify(struct aufs_rdu *rdu)
++{
++	AuDbg("rdu{%llu, %p, %u | %u | %llu, %u, %u | "
++	      "%llu, b%d, 0x%x, g%u}\n",
++	      rdu->sz, rdu->ent.e, rdu->verify[AufsCtlRduV_SZ],
++	      rdu->blk,
++	      rdu->rent, rdu->shwh, rdu->full,
++	      rdu->cookie.h_pos, rdu->cookie.bindex, rdu->cookie.flags,
++	      rdu->cookie.generation);
++
++	if (rdu->verify[AufsCtlRduV_SZ] == sizeof(*rdu))
++		return 0;
++
++	AuDbg("%u:%u\n",
++	      rdu->verify[AufsCtlRduV_SZ], (unsigned int)sizeof(*rdu));
++	return -EINVAL;
++}
++
++long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	long err, e;
++	struct aufs_rdu rdu;
++	void __user *p = (void __user *)arg;
++
++	err = copy_from_user(&rdu, p, sizeof(rdu));
++	if (unlikely(err)) {
++		err = -EFAULT;
++		AuTraceErr(err);
++		goto out;
++	}
++	err = au_rdu_verify(&rdu);
++	if (unlikely(err))
++		goto out;
++
++	switch (cmd) {
++	case AUFS_CTL_RDU:
++		err = au_rdu(file, &rdu);
++		if (unlikely(err))
++			break;
++
++		e = copy_to_user(p, &rdu, sizeof(rdu));
++		if (unlikely(e)) {
++			err = -EFAULT;
++			AuTraceErr(err);
++		}
++		break;
++	case AUFS_CTL_RDU_INO:
++		err = au_rdu_ino(file, &rdu);
++		break;
++
++	default:
++		/* err = -ENOTTY; */
++		err = -EINVAL;
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++#ifdef CONFIG_COMPAT
++long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	long err, e;
++	struct aufs_rdu rdu;
++	void __user *p = compat_ptr(arg);
++
++	/* todo: get_user()? */
++	err = copy_from_user(&rdu, p, sizeof(rdu));
++	if (unlikely(err)) {
++		err = -EFAULT;
++		AuTraceErr(err);
++		goto out;
++	}
++	rdu.ent.e = compat_ptr(rdu.ent.ul);
++	err = au_rdu_verify(&rdu);
++	if (unlikely(err))
++		goto out;
++
++	switch (cmd) {
++	case AUFS_CTL_RDU:
++		err = au_rdu(file, &rdu);
++		if (unlikely(err))
++			break;
++
++		rdu.ent.ul = ptr_to_compat(rdu.ent.e);
++		rdu.tail.ul = ptr_to_compat(rdu.tail.e);
++		e = copy_to_user(p, &rdu, sizeof(rdu));
++		if (unlikely(e)) {
++			err = -EFAULT;
++			AuTraceErr(err);
++		}
++		break;
++	case AUFS_CTL_RDU_INO:
++		err = au_rdu_ino(file, &rdu);
++		break;
++
++	default:
++		/* err = -ENOTTY; */
++		err = -EINVAL;
++	}
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++#endif
+diff -Nurp linux-5.4/fs/aufs/rwsem.h linux-5.4-aufs/fs/aufs/rwsem.h
+--- linux-5.4/fs/aufs/rwsem.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/rwsem.h	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,60 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * simple read-write semaphore wrappers
++ */
++
++#ifndef __AUFS_RWSEM_H__
++#define __AUFS_RWSEM_H__
++
++#ifdef __KERNEL__
++
++#include "debug.h"
++
++/* in the future, the name 'au_rwsem' will be totally gone */
++#define au_rwsem	rw_semaphore
++
++/* to debug easier, do not make them inlined functions */
++#define AuRwMustNoWaiters(rw)	AuDebugOn(rwsem_is_contended(rw))
++/* rwsem_is_locked() is unusable */
++#define AuRwMustReadLock(rw)	AuDebugOn(!lockdep_recursing(current) \
++					  && debug_locks \
++					  && !lockdep_is_held_type(rw, 1))
++#define AuRwMustWriteLock(rw)	AuDebugOn(!lockdep_recursing(current) \
++					  && debug_locks \
++					  && !lockdep_is_held_type(rw, 0))
++#define AuRwMustAnyLock(rw)	AuDebugOn(!lockdep_recursing(current) \
++					  && debug_locks \
++					  && !lockdep_is_held(rw))
++#define AuRwDestroy(rw)		AuDebugOn(!lockdep_recursing(current) \
++					  && debug_locks \
++					  && lockdep_is_held(rw))
++
++#define au_rw_init(rw)	init_rwsem(rw)
++
++#define au_rw_init_wlock(rw) do {		\
++		au_rw_init(rw);			\
++		down_write(rw);			\
++	} while (0)
++
++#define au_rw_init_wlock_nested(rw, lsc) do {	\
++		au_rw_init(rw);			\
++		down_write_nested(rw, lsc);	\
++	} while (0)
++
++#define au_rw_read_lock(rw)		down_read(rw)
++#define au_rw_read_lock_nested(rw, lsc)	down_read_nested(rw, lsc)
++#define au_rw_read_unlock(rw)		up_read(rw)
++#define au_rw_dgrade_lock(rw)		downgrade_write(rw)
++#define au_rw_write_lock(rw)		down_write(rw)
++#define au_rw_write_lock_nested(rw, lsc) down_write_nested(rw, lsc)
++#define au_rw_write_unlock(rw)		up_write(rw)
++/* why is not _nested version defined? */
++#define au_rw_read_trylock(rw)		down_read_trylock(rw)
++#define au_rw_write_trylock(rw)		down_write_trylock(rw)
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_RWSEM_H__ */
+diff -Nurp linux-5.4/fs/aufs/sbinfo.c linux-5.4-aufs/fs/aufs/sbinfo.c
+--- linux-5.4/fs/aufs/sbinfo.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/sbinfo.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,301 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * superblock private data
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++/*
++ * they are necessary regardless sysfs is disabled.
++ */
++void au_si_free(struct kobject *kobj)
++{
++	int i;
++	struct au_sbinfo *sbinfo;
++	char *locked __maybe_unused; /* debug only */
++
++	sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
++	for (i = 0; i < AuPlink_NHASH; i++)
++		AuDebugOn(!hlist_bl_empty(sbinfo->si_plink + i));
++	AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
++
++	AuLCntZero(au_lcnt_read(&sbinfo->si_ninodes, /*do_rev*/0));
++	au_lcnt_fin(&sbinfo->si_ninodes, /*do_sync*/0);
++	AuLCntZero(au_lcnt_read(&sbinfo->si_nfiles, /*do_rev*/0));
++	au_lcnt_fin(&sbinfo->si_nfiles, /*do_sync*/0);
++
++	dbgaufs_si_fin(sbinfo);
++	au_rw_write_lock(&sbinfo->si_rwsem);
++	au_br_free(sbinfo);
++	au_rw_write_unlock(&sbinfo->si_rwsem);
++
++	au_kfree_try_rcu(sbinfo->si_branch);
++	mutex_destroy(&sbinfo->si_xib_mtx);
++	AuRwDestroy(&sbinfo->si_rwsem);
++
++	au_lcnt_wait_for_fin(&sbinfo->si_ninodes);
++	/* si_nfiles is waited too */
++	au_kfree_rcu(sbinfo);
++}
++
++int au_si_alloc(struct super_block *sb)
++{
++	int err, i;
++	struct au_sbinfo *sbinfo;
++
++	err = -ENOMEM;
++	sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS);
++	if (unlikely(!sbinfo))
++		goto out;
++
++	/* will be reallocated separately */
++	sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS);
++	if (unlikely(!sbinfo->si_branch))
++		goto out_sbinfo;
++
++	err = sysaufs_si_init(sbinfo);
++	if (!err) {
++		dbgaufs_si_null(sbinfo);
++		err = dbgaufs_si_init(sbinfo);
++		if (unlikely(err))
++			kobject_put(&sbinfo->si_kobj);
++	}
++	if (unlikely(err))
++		goto out_br;
++
++	au_nwt_init(&sbinfo->si_nowait);
++	au_rw_init_wlock(&sbinfo->si_rwsem);
++
++	au_lcnt_init(&sbinfo->si_ninodes, /*release*/NULL);
++	au_lcnt_init(&sbinfo->si_nfiles, /*release*/NULL);
++
++	sbinfo->si_bbot = -1;
++	sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2;
++
++	sbinfo->si_wbr_copyup = AuWbrCopyup_Def;
++	sbinfo->si_wbr_create = AuWbrCreate_Def;
++	sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup;
++	sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create;
++
++	au_fhsm_init(sbinfo);
++
++	sbinfo->si_mntflags = au_opts_plink(AuOpt_Def);
++
++	sbinfo->si_xino_jiffy = jiffies;
++	sbinfo->si_xino_expire
++		= msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC);
++	mutex_init(&sbinfo->si_xib_mtx);
++	/* leave si_xib_last_pindex and si_xib_next_bit */
++
++	INIT_HLIST_BL_HEAD(&sbinfo->si_aopen);
++
++	sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC);
++	sbinfo->si_rdblk = AUFS_RDBLK_DEF;
++	sbinfo->si_rdhash = AUFS_RDHASH_DEF;
++	sbinfo->si_dirwh = AUFS_DIRWH_DEF;
++
++	for (i = 0; i < AuPlink_NHASH; i++)
++		INIT_HLIST_BL_HEAD(sbinfo->si_plink + i);
++	init_waitqueue_head(&sbinfo->si_plink_wq);
++	spin_lock_init(&sbinfo->si_plink_maint_lock);
++
++	INIT_HLIST_BL_HEAD(&sbinfo->si_files);
++
++	/* with getattr by default */
++	sbinfo->si_iop_array = aufs_iop;
++
++	/* leave other members for sysaufs and si_mnt. */
++	sbinfo->si_sb = sb;
++	sb->s_fs_info = sbinfo;
++	si_pid_set(sb);
++	return 0; /* success */
++
++out_br:
++	au_kfree_try_rcu(sbinfo->si_branch);
++out_sbinfo:
++	au_kfree_rcu(sbinfo);
++out:
++	return err;
++}
++
++int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink)
++{
++	int err, sz;
++	struct au_branch **brp;
++
++	AuRwMustWriteLock(&sbinfo->si_rwsem);
++
++	err = -ENOMEM;
++	sz = sizeof(*brp) * (sbinfo->si_bbot + 1);
++	if (unlikely(!sz))
++		sz = sizeof(*brp);
++	brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS,
++			   may_shrink);
++	if (brp) {
++		sbinfo->si_branch = brp;
++		err = 0;
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++unsigned int au_sigen_inc(struct super_block *sb)
++{
++	unsigned int gen;
++	struct inode *inode;
++
++	SiMustWriteLock(sb);
++
++	gen = ++au_sbi(sb)->si_generation;
++	au_update_digen(sb->s_root);
++	inode = d_inode(sb->s_root);
++	au_update_iigen(inode, /*half*/0);
++	inode_inc_iversion(inode);
++	return gen;
++}
++
++aufs_bindex_t au_new_br_id(struct super_block *sb)
++{
++	aufs_bindex_t br_id;
++	int i;
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	for (i = 0; i <= AUFS_BRANCH_MAX; i++) {
++		br_id = ++sbinfo->si_last_br_id;
++		AuDebugOn(br_id < 0);
++		if (br_id && au_br_index(sb, br_id) < 0)
++			return br_id;
++	}
++
++	return -1;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* it is ok that new 'nwt' tasks are appended while we are sleeping */
++int si_read_lock(struct super_block *sb, int flags)
++{
++	int err;
++
++	err = 0;
++	if (au_ftest_lock(flags, FLUSH))
++		au_nwt_flush(&au_sbi(sb)->si_nowait);
++
++	si_noflush_read_lock(sb);
++	err = au_plink_maint(sb, flags);
++	if (unlikely(err))
++		si_read_unlock(sb);
++
++	return err;
++}
++
++int si_write_lock(struct super_block *sb, int flags)
++{
++	int err;
++
++	if (au_ftest_lock(flags, FLUSH))
++		au_nwt_flush(&au_sbi(sb)->si_nowait);
++
++	si_noflush_write_lock(sb);
++	err = au_plink_maint(sb, flags);
++	if (unlikely(err))
++		si_write_unlock(sb);
++
++	return err;
++}
++
++/* dentry and super_block lock. call at entry point */
++int aufs_read_lock(struct dentry *dentry, int flags)
++{
++	int err;
++	struct super_block *sb;
++
++	sb = dentry->d_sb;
++	err = si_read_lock(sb, flags);
++	if (unlikely(err))
++		goto out;
++
++	if (au_ftest_lock(flags, DW))
++		di_write_lock_child(dentry);
++	else
++		di_read_lock_child(dentry, flags);
++
++	if (au_ftest_lock(flags, GEN)) {
++		err = au_digen_test(dentry, au_sigen(sb));
++		if (!au_opt_test(au_mntflags(sb), UDBA_NONE))
++			AuDebugOn(!err && au_dbrange_test(dentry));
++		else if (!err)
++			err = au_dbrange_test(dentry);
++		if (unlikely(err))
++			aufs_read_unlock(dentry, flags);
++	}
++
++out:
++	return err;
++}
++
++void aufs_read_unlock(struct dentry *dentry, int flags)
++{
++	if (au_ftest_lock(flags, DW))
++		di_write_unlock(dentry);
++	else
++		di_read_unlock(dentry, flags);
++	si_read_unlock(dentry->d_sb);
++}
++
++void aufs_write_lock(struct dentry *dentry)
++{
++	si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW);
++	di_write_lock_child(dentry);
++}
++
++void aufs_write_unlock(struct dentry *dentry)
++{
++	di_write_unlock(dentry);
++	si_write_unlock(dentry->d_sb);
++}
++
++int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags)
++{
++	int err;
++	unsigned int sigen;
++	struct super_block *sb;
++
++	sb = d1->d_sb;
++	err = si_read_lock(sb, flags);
++	if (unlikely(err))
++		goto out;
++
++	di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS));
++
++	if (au_ftest_lock(flags, GEN)) {
++		sigen = au_sigen(sb);
++		err = au_digen_test(d1, sigen);
++		AuDebugOn(!err && au_dbrange_test(d1));
++		if (!err) {
++			err = au_digen_test(d2, sigen);
++			AuDebugOn(!err && au_dbrange_test(d2));
++		}
++		if (unlikely(err))
++			aufs_read_and_write_unlock2(d1, d2);
++	}
++
++out:
++	return err;
++}
++
++void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2)
++{
++	di_write_unlock2(d1, d2);
++	si_read_unlock(d1->d_sb);
++}
+diff -Nurp linux-5.4/fs/aufs/super.c linux-5.4-aufs/fs/aufs/super.c
+--- linux-5.4/fs/aufs/super.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/super.c	2019-11-28 01:25:59.067925618 +0200
+@@ -0,0 +1,1034 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * mount and super_block operations
++ */
++
++#include <linux/iversion.h>
++#include <linux/mm.h>
++#include <linux/seq_file.h>
++#include <linux/statfs.h>
++#include <linux/vmalloc.h>
++#include "aufs.h"
++
++/*
++ * super_operations
++ */
++static struct inode *aufs_alloc_inode(struct super_block *sb __maybe_unused)
++{
++	struct au_icntnr *c;
++
++	c = au_cache_alloc_icntnr();
++	if (c) {
++		au_icntnr_init(c);
++		inode_set_iversion(&c->vfs_inode, 1); /* sigen(sb); */
++		c->iinfo.ii_hinode = NULL;
++		return &c->vfs_inode;
++	}
++	return NULL;
++}
++
++static void aufs_destroy_inode(struct inode *inode)
++{
++	if (!au_is_bad_inode(inode))
++		au_iinfo_fin(inode);
++}
++
++static void aufs_free_inode(struct inode *inode)
++{
++	au_cache_free_icntnr(container_of(inode, struct au_icntnr, vfs_inode));
++}
++
++struct inode *au_iget_locked(struct super_block *sb, ino_t ino)
++{
++	struct inode *inode;
++	int err;
++
++	inode = iget_locked(sb, ino);
++	if (unlikely(!inode)) {
++		inode = ERR_PTR(-ENOMEM);
++		goto out;
++	}
++	if (!(inode->i_state & I_NEW))
++		goto out;
++
++	err = au_xigen_new(inode);
++	if (!err)
++		err = au_iinfo_init(inode);
++	if (!err)
++		inode_inc_iversion(inode);
++	else {
++		iget_failed(inode);
++		inode = ERR_PTR(err);
++	}
++
++out:
++	/* never return NULL */
++	AuDebugOn(!inode);
++	AuTraceErrPtr(inode);
++	return inode;
++}
++
++/* lock free root dinfo */
++static int au_show_brs(struct seq_file *seq, struct super_block *sb)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct path path;
++	struct au_hdentry *hdp;
++	struct au_branch *br;
++	au_br_perm_str_t perm;
++
++	err = 0;
++	bbot = au_sbbot(sb);
++	bindex = 0;
++	hdp = au_hdentry(au_di(sb->s_root), bindex);
++	for (; !err && bindex <= bbot; bindex++, hdp++) {
++		br = au_sbr(sb, bindex);
++		path.mnt = au_br_mnt(br);
++		path.dentry = hdp->hd_dentry;
++		err = au_seq_path(seq, &path);
++		if (!err) {
++			au_optstr_br_perm(&perm, br->br_perm);
++			seq_printf(seq, "=%s", perm.a);
++			if (bindex != bbot)
++				seq_putc(seq, ':');
++		}
++	}
++	if (unlikely(err || seq_has_overflowed(seq)))
++		err = -E2BIG;
++
++	return err;
++}
++
++static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat,
++		       const char *append)
++{
++	char *p;
++
++	p = fmt;
++	while (*pat != ':')
++		*p++ = *pat++;
++	*p++ = *pat++;
++	strcpy(p, append);
++	AuDebugOn(strlen(fmt) >= len);
++}
++
++static void au_show_wbr_create(struct seq_file *m, int v,
++			       struct au_sbinfo *sbinfo)
++{
++	const char *pat;
++	char fmt[32];
++	struct au_wbr_mfs *mfs;
++
++	AuRwMustAnyLock(&sbinfo->si_rwsem);
++
++	seq_puts(m, ",create=");
++	pat = au_optstr_wbr_create(v);
++	mfs = &sbinfo->si_wbr_mfs;
++	switch (v) {
++	case AuWbrCreate_TDP:
++	case AuWbrCreate_RR:
++	case AuWbrCreate_MFS:
++	case AuWbrCreate_PMFS:
++		seq_puts(m, pat);
++		break;
++	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
++	case AuWbrCreate_PMFSRR:
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu");
++		seq_printf(m, fmt, mfs->mfsrr_watermark);
++		break;
++	case AuWbrCreate_MFSV:
++	case AuWbrCreate_PMFSV:
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%lu");
++		seq_printf(m, fmt,
++			   jiffies_to_msecs(mfs->mfs_expire)
++			   / MSEC_PER_SEC);
++		break;
++	case AuWbrCreate_MFSRRV:
++	case AuWbrCreate_TDMFSV:
++	case AuWbrCreate_PMFSRRV:
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu");
++		seq_printf(m, fmt, mfs->mfsrr_watermark,
++			   jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC);
++		break;
++	default:
++		BUG();
++	}
++}
++
++static int au_show_xino(struct seq_file *seq, struct super_block *sb)
++{
++#ifdef CONFIG_SYSFS
++	return 0;
++#else
++	int err;
++	const int len = sizeof(AUFS_XINO_FNAME) - 1;
++	aufs_bindex_t bindex, brid;
++	struct qstr *name;
++	struct file *f;
++	struct dentry *d, *h_root;
++	struct au_branch *br;
++
++	AuRwMustAnyLock(&sbinfo->si_rwsem);
++
++	err = 0;
++	f = au_sbi(sb)->si_xib;
++	if (!f)
++		goto out;
++
++	/* stop printing the default xino path on the first writable branch */
++	h_root = NULL;
++	bindex = au_xi_root(sb, f->f_path.dentry);
++	if (bindex >= 0) {
++		br = au_sbr_sb(sb, bindex);
++		h_root = au_br_dentry(br);
++	}
++
++	d = f->f_path.dentry;
++	name = &d->d_name;
++	/* safe ->d_parent because the file is unlinked */
++	if (d->d_parent == h_root
++	    && name->len == len
++	    && !memcmp(name->name, AUFS_XINO_FNAME, len))
++		goto out;
++
++	seq_puts(seq, ",xino=");
++	err = au_xino_path(seq, f);
++
++out:
++	return err;
++#endif
++}
++
++/* seq_file will re-call me in case of too long string */
++static int aufs_show_options(struct seq_file *m, struct dentry *dentry)
++{
++	int err;
++	unsigned int mnt_flags, v;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++
++#define AuBool(name, str) do { \
++	v = au_opt_test(mnt_flags, name); \
++	if (v != au_opt_test(AuOpt_Def, name)) \
++		seq_printf(m, ",%s" #str, v ? "" : "no"); \
++} while (0)
++
++#define AuStr(name, str) do { \
++	v = mnt_flags & AuOptMask_##name; \
++	if (v != (AuOpt_Def & AuOptMask_##name)) \
++		seq_printf(m, "," #str "=%s", au_optstr_##str(v)); \
++} while (0)
++
++#define AuUInt(name, str, val) do { \
++	if (val != AUFS_##name##_DEF) \
++		seq_printf(m, "," #str "=%u", val); \
++} while (0)
++
++	sb = dentry->d_sb;
++	if (sb->s_flags & SB_POSIXACL)
++		seq_puts(m, ",acl");
++#if 0
++	if (sb->s_flags & SB_I_VERSION)
++		seq_puts(m, ",i_version");
++#endif
++
++	/* lock free root dinfo */
++	si_noflush_read_lock(sb);
++	sbinfo = au_sbi(sb);
++	seq_printf(m, ",si=%lx", sysaufs_si_id(sbinfo));
++
++	mnt_flags = au_mntflags(sb);
++	if (au_opt_test(mnt_flags, XINO)) {
++		err = au_show_xino(m, sb);
++		if (unlikely(err))
++			goto out;
++	} else
++		seq_puts(m, ",noxino");
++
++	AuBool(TRUNC_XINO, trunc_xino);
++	AuStr(UDBA, udba);
++	AuBool(SHWH, shwh);
++	AuBool(PLINK, plink);
++	AuBool(DIO, dio);
++	AuBool(DIRPERM1, dirperm1);
++
++	v = sbinfo->si_wbr_create;
++	if (v != AuWbrCreate_Def)
++		au_show_wbr_create(m, v, sbinfo);
++
++	v = sbinfo->si_wbr_copyup;
++	if (v != AuWbrCopyup_Def)
++		seq_printf(m, ",cpup=%s", au_optstr_wbr_copyup(v));
++
++	v = au_opt_test(mnt_flags, ALWAYS_DIROPQ);
++	if (v != au_opt_test(AuOpt_Def, ALWAYS_DIROPQ))
++		seq_printf(m, ",diropq=%c", v ? 'a' : 'w');
++
++	AuUInt(DIRWH, dirwh, sbinfo->si_dirwh);
++
++	v = jiffies_to_msecs(sbinfo->si_rdcache) / MSEC_PER_SEC;
++	AuUInt(RDCACHE, rdcache, v);
++
++	AuUInt(RDBLK, rdblk, sbinfo->si_rdblk);
++	AuUInt(RDHASH, rdhash, sbinfo->si_rdhash);
++
++	au_fhsm_show(m, sbinfo);
++
++	AuBool(DIRREN, dirren);
++	AuBool(SUM, sum);
++	/* AuBool(SUM_W, wsum); */
++	AuBool(WARN_PERM, warn_perm);
++	AuBool(VERBOSE, verbose);
++
++out:
++	/* be sure to print "br:" last */
++	if (!sysaufs_brs) {
++		seq_puts(m, ",br:");
++		au_show_brs(m, sb);
++	}
++	si_read_unlock(sb);
++	return 0;
++
++#undef AuBool
++#undef AuStr
++#undef AuUInt
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* sum mode which returns the summation for statfs(2) */
++
++static u64 au_add_till_max(u64 a, u64 b)
++{
++	u64 old;
++
++	old = a;
++	a += b;
++	if (old <= a)
++		return a;
++	return ULLONG_MAX;
++}
++
++static u64 au_mul_till_max(u64 a, long mul)
++{
++	u64 old;
++
++	old = a;
++	a *= mul;
++	if (old <= a)
++		return a;
++	return ULLONG_MAX;
++}
++
++static int au_statfs_sum(struct super_block *sb, struct kstatfs *buf)
++{
++	int err;
++	long bsize, factor;
++	u64 blocks, bfree, bavail, files, ffree;
++	aufs_bindex_t bbot, bindex, i;
++	unsigned char shared;
++	struct path h_path;
++	struct super_block *h_sb;
++
++	err = 0;
++	bsize = LONG_MAX;
++	files = 0;
++	ffree = 0;
++	blocks = 0;
++	bfree = 0;
++	bavail = 0;
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		h_path.mnt = au_sbr_mnt(sb, bindex);
++		h_sb = h_path.mnt->mnt_sb;
++		shared = 0;
++		for (i = 0; !shared && i < bindex; i++)
++			shared = (au_sbr_sb(sb, i) == h_sb);
++		if (shared)
++			continue;
++
++		/* sb->s_root for NFS is unreliable */
++		h_path.dentry = h_path.mnt->mnt_root;
++		err = vfs_statfs(&h_path, buf);
++		if (unlikely(err))
++			goto out;
++
++		if (bsize > buf->f_bsize) {
++			/*
++			 * we will reduce bsize, so we have to expand blocks
++			 * etc. to match them again
++			 */
++			factor = (bsize / buf->f_bsize);
++			blocks = au_mul_till_max(blocks, factor);
++			bfree = au_mul_till_max(bfree, factor);
++			bavail = au_mul_till_max(bavail, factor);
++			bsize = buf->f_bsize;
++		}
++
++		factor = (buf->f_bsize / bsize);
++		blocks = au_add_till_max(blocks,
++				au_mul_till_max(buf->f_blocks, factor));
++		bfree = au_add_till_max(bfree,
++				au_mul_till_max(buf->f_bfree, factor));
++		bavail = au_add_till_max(bavail,
++				au_mul_till_max(buf->f_bavail, factor));
++		files = au_add_till_max(files, buf->f_files);
++		ffree = au_add_till_max(ffree, buf->f_ffree);
++	}
++
++	buf->f_bsize = bsize;
++	buf->f_blocks = blocks;
++	buf->f_bfree = bfree;
++	buf->f_bavail = bavail;
++	buf->f_files = files;
++	buf->f_ffree = ffree;
++	buf->f_frsize = 0;
++
++out:
++	return err;
++}
++
++static int aufs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++	int err;
++	struct path h_path;
++	struct super_block *sb;
++
++	/* lock free root dinfo */
++	sb = dentry->d_sb;
++	si_noflush_read_lock(sb);
++	if (!au_opt_test(au_mntflags(sb), SUM)) {
++		/* sb->s_root for NFS is unreliable */
++		h_path.mnt = au_sbr_mnt(sb, 0);
++		h_path.dentry = h_path.mnt->mnt_root;
++		err = vfs_statfs(&h_path, buf);
++	} else
++		err = au_statfs_sum(sb, buf);
++	si_read_unlock(sb);
++
++	if (!err) {
++		buf->f_type = AUFS_SUPER_MAGIC;
++		buf->f_namelen = AUFS_MAX_NAMELEN;
++		memset(&buf->f_fsid, 0, sizeof(buf->f_fsid));
++	}
++	/* buf->f_bsize = buf->f_blocks = buf->f_bfree = buf->f_bavail = -1; */
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int aufs_sync_fs(struct super_block *sb, int wait)
++{
++	int err, e;
++	aufs_bindex_t bbot, bindex;
++	struct au_branch *br;
++	struct super_block *h_sb;
++
++	err = 0;
++	si_noflush_read_lock(sb);
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (!au_br_writable(br->br_perm))
++			continue;
++
++		h_sb = au_sbr_sb(sb, bindex);
++		e = vfsub_sync_filesystem(h_sb, wait);
++		if (unlikely(e && !err))
++			err = e;
++		/* go on even if an error happens */
++	}
++	si_read_unlock(sb);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* final actions when unmounting a file system */
++static void aufs_put_super(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++
++	sbinfo = au_sbi(sb);
++	if (sbinfo)
++		kobject_put(&sbinfo->si_kobj);
++}
++
++/* ---------------------------------------------------------------------- */
++
++void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
++		     struct super_block *sb, void *arg)
++{
++	void *array;
++	unsigned long long n, sz;
++
++	array = NULL;
++	n = 0;
++	if (!*hint)
++		goto out;
++
++	if (*hint > ULLONG_MAX / sizeof(array)) {
++		array = ERR_PTR(-EMFILE);
++		pr_err("hint %llu\n", *hint);
++		goto out;
++	}
++
++	sz = sizeof(array) * *hint;
++	array = kzalloc(sz, GFP_NOFS);
++	if (unlikely(!array))
++		array = vzalloc(sz);
++	if (unlikely(!array)) {
++		array = ERR_PTR(-ENOMEM);
++		goto out;
++	}
++
++	n = cb(sb, array, *hint, arg);
++	AuDebugOn(n > *hint);
++
++out:
++	*hint = n;
++	return array;
++}
++
++static unsigned long long au_iarray_cb(struct super_block *sb, void *a,
++				       unsigned long long max __maybe_unused,
++				       void *arg)
++{
++	unsigned long long n;
++	struct inode **p, *inode;
++	struct list_head *head;
++
++	n = 0;
++	p = a;
++	head = arg;
++	spin_lock(&sb->s_inode_list_lock);
++	list_for_each_entry(inode, head, i_sb_list) {
++		if (!au_is_bad_inode(inode)
++		    && au_ii(inode)->ii_btop >= 0) {
++			spin_lock(&inode->i_lock);
++			if (atomic_read(&inode->i_count)) {
++				au_igrab(inode);
++				*p++ = inode;
++				n++;
++				AuDebugOn(n > max);
++			}
++			spin_unlock(&inode->i_lock);
++		}
++	}
++	spin_unlock(&sb->s_inode_list_lock);
++
++	return n;
++}
++
++struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max)
++{
++	struct au_sbinfo *sbi;
++
++	sbi = au_sbi(sb);
++	*max = au_lcnt_read(&sbi->si_ninodes, /*do_rev*/1);
++	return au_array_alloc(max, au_iarray_cb, sb, &sb->s_inodes);
++}
++
++void au_iarray_free(struct inode **a, unsigned long long max)
++{
++	unsigned long long ull;
++
++	for (ull = 0; ull < max; ull++)
++		iput(a[ull]);
++	kvfree(a);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * refresh dentry and inode at remount time.
++ */
++/* todo: consolidate with simple_reval_dpath() and au_reval_for_attr() */
++static int au_do_refresh(struct dentry *dentry, unsigned int dir_flags,
++		      struct dentry *parent)
++{
++	int err;
++
++	di_write_lock_child(dentry);
++	di_read_lock_parent(parent, AuLock_IR);
++	err = au_refresh_dentry(dentry, parent);
++	if (!err && dir_flags)
++		au_hn_reset(d_inode(dentry), dir_flags);
++	di_read_unlock(parent, AuLock_IR);
++	di_write_unlock(dentry);
++
++	return err;
++}
++
++static int au_do_refresh_d(struct dentry *dentry, unsigned int sigen,
++			   struct au_sbinfo *sbinfo,
++			   const unsigned int dir_flags, unsigned int do_idop)
++{
++	int err;
++	struct dentry *parent;
++
++	err = 0;
++	parent = dget_parent(dentry);
++	if (!au_digen_test(parent, sigen) && au_digen_test(dentry, sigen)) {
++		if (d_really_is_positive(dentry)) {
++			if (!d_is_dir(dentry))
++				err = au_do_refresh(dentry, /*dir_flags*/0,
++						 parent);
++			else {
++				err = au_do_refresh(dentry, dir_flags, parent);
++				if (unlikely(err))
++					au_fset_si(sbinfo, FAILED_REFRESH_DIR);
++			}
++		} else
++			err = au_do_refresh(dentry, /*dir_flags*/0, parent);
++		AuDbgDentry(dentry);
++	}
++	dput(parent);
++
++	if (!err) {
++		if (do_idop)
++			au_refresh_dop(dentry, /*force_reval*/0);
++	} else
++		au_refresh_dop(dentry, /*force_reval*/1);
++
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_refresh_d(struct super_block *sb, unsigned int do_idop)
++{
++	int err, i, j, ndentry, e;
++	unsigned int sigen;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry **dentries, *d;
++	struct au_sbinfo *sbinfo;
++	struct dentry *root = sb->s_root;
++	const unsigned int dir_flags = au_hi_flags(d_inode(root), /*isdir*/1);
++
++	if (do_idop)
++		au_refresh_dop(root, /*force_reval*/0);
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	err = au_dcsub_pages(&dpages, root, NULL, NULL);
++	if (unlikely(err))
++		goto out_dpages;
++
++	sigen = au_sigen(sb);
++	sbinfo = au_sbi(sb);
++	for (i = 0; i < dpages.ndpage; i++) {
++		dpage = dpages.dpages + i;
++		dentries = dpage->dentries;
++		ndentry = dpage->ndentry;
++		for (j = 0; j < ndentry; j++) {
++			d = dentries[j];
++			e = au_do_refresh_d(d, sigen, sbinfo, dir_flags,
++					    do_idop);
++			if (unlikely(e && !err))
++				err = e;
++			/* go on even err */
++		}
++	}
++
++out_dpages:
++	au_dpages_free(&dpages);
++out:
++	return err;
++}
++
++static int au_refresh_i(struct super_block *sb, unsigned int do_idop)
++{
++	int err, e;
++	unsigned int sigen;
++	unsigned long long max, ull;
++	struct inode *inode, **array;
++
++	array = au_iarray_alloc(sb, &max);
++	err = PTR_ERR(array);
++	if (IS_ERR(array))
++		goto out;
++
++	err = 0;
++	sigen = au_sigen(sb);
++	for (ull = 0; ull < max; ull++) {
++		inode = array[ull];
++		if (unlikely(!inode))
++			break;
++
++		e = 0;
++		ii_write_lock_child(inode);
++		if (au_iigen(inode, NULL) != sigen) {
++			e = au_refresh_hinode_self(inode);
++			if (unlikely(e)) {
++				au_refresh_iop(inode, /*force_getattr*/1);
++				pr_err("error %d, i%lu\n", e, inode->i_ino);
++				if (!err)
++					err = e;
++				/* go on even if err */
++			}
++		}
++		if (!e && do_idop)
++			au_refresh_iop(inode, /*force_getattr*/0);
++		ii_write_unlock(inode);
++	}
++
++	au_iarray_free(array, max);
++
++out:
++	return err;
++}
++
++static void au_remount_refresh(struct super_block *sb, unsigned int do_idop)
++{
++	int err, e;
++	unsigned int udba;
++	aufs_bindex_t bindex, bbot;
++	struct dentry *root;
++	struct inode *inode;
++	struct au_branch *br;
++	struct au_sbinfo *sbi;
++
++	au_sigen_inc(sb);
++	sbi = au_sbi(sb);
++	au_fclr_si(sbi, FAILED_REFRESH_DIR);
++
++	root = sb->s_root;
++	DiMustNoWaiters(root);
++	inode = d_inode(root);
++	IiMustNoWaiters(inode);
++
++	udba = au_opt_udba(sb);
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		err = au_hnotify_reset_br(udba, br, br->br_perm);
++		if (unlikely(err))
++			AuIOErr("hnotify failed on br %d, %d, ignored\n",
++				bindex, err);
++		/* go on even if err */
++	}
++	au_hn_reset(inode, au_hi_flags(inode, /*isdir*/1));
++
++	if (do_idop) {
++		if (au_ftest_si(sbi, NO_DREVAL)) {
++			AuDebugOn(sb->s_d_op == &aufs_dop_noreval);
++			sb->s_d_op = &aufs_dop_noreval;
++			AuDebugOn(sbi->si_iop_array == aufs_iop_nogetattr);
++			sbi->si_iop_array = aufs_iop_nogetattr;
++		} else {
++			AuDebugOn(sb->s_d_op == &aufs_dop);
++			sb->s_d_op = &aufs_dop;
++			AuDebugOn(sbi->si_iop_array == aufs_iop);
++			sbi->si_iop_array = aufs_iop;
++		}
++		pr_info("reset to %ps and %ps\n",
++			sb->s_d_op, sbi->si_iop_array);
++	}
++
++	di_write_unlock(root);
++	err = au_refresh_d(sb, do_idop);
++	e = au_refresh_i(sb, do_idop);
++	if (unlikely(e && !err))
++		err = e;
++	/* aufs_write_lock() calls ..._child() */
++	di_write_lock_child(root);
++
++	au_cpup_attr_all(inode, /*force*/1);
++
++	if (unlikely(err))
++		AuIOErr("refresh failed, ignored, %d\n", err);
++}
++
++/* stop extra interpretation of errno in mount(8), and strange error messages */
++static int cvt_err(int err)
++{
++	AuTraceErr(err);
++
++	switch (err) {
++	case -ENOENT:
++	case -ENOTDIR:
++	case -EEXIST:
++	case -EIO:
++		err = -EINVAL;
++	}
++	return err;
++}
++
++static int aufs_remount_fs(struct super_block *sb, int *flags, char *data)
++{
++	int err, do_dx;
++	unsigned int mntflags;
++	struct au_opts opts = {
++		.opt = NULL
++	};
++	struct dentry *root;
++	struct inode *inode;
++	struct au_sbinfo *sbinfo;
++
++	err = 0;
++	root = sb->s_root;
++	if (!data || !*data) {
++		err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++		if (!err) {
++			di_write_lock_child(root);
++			err = au_opts_verify(sb, *flags, /*pending*/0);
++			aufs_write_unlock(root);
++		}
++		goto out;
++	}
++
++	err = -ENOMEM;
++	opts.opt = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!opts.opt))
++		goto out;
++	opts.max_opt = PAGE_SIZE / sizeof(*opts.opt);
++	opts.flags = AuOpts_REMOUNT;
++	opts.sb_flags = *flags;
++
++	/* parse it before aufs lock */
++	err = au_opts_parse(sb, data, &opts);
++	if (unlikely(err))
++		goto out_opts;
++
++	sbinfo = au_sbi(sb);
++	inode = d_inode(root);
++	inode_lock(inode);
++	err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++	if (unlikely(err))
++		goto out_mtx;
++	di_write_lock_child(root);
++
++	/* au_opts_remount() may return an error */
++	err = au_opts_remount(sb, &opts);
++	au_opts_free(&opts);
++
++	if (au_ftest_opts(opts.flags, REFRESH))
++		au_remount_refresh(sb, au_ftest_opts(opts.flags, REFRESH_IDOP));
++
++	if (au_ftest_opts(opts.flags, REFRESH_DYAOP)) {
++		mntflags = au_mntflags(sb);
++		do_dx = !!au_opt_test(mntflags, DIO);
++		au_dy_arefresh(do_dx);
++	}
++
++	au_fhsm_wrote_all(sb, /*force*/1); /* ?? */
++	aufs_write_unlock(root);
++
++out_mtx:
++	inode_unlock(inode);
++out_opts:
++	free_page((unsigned long)opts.opt);
++out:
++	err = cvt_err(err);
++	AuTraceErr(err);
++	return err;
++}
++
++static const struct super_operations aufs_sop = {
++	.alloc_inode	= aufs_alloc_inode,
++	.destroy_inode	= aufs_destroy_inode,
++	.free_inode	= aufs_free_inode,
++	/* always deleting, no clearing */
++	.drop_inode	= generic_delete_inode,
++	.show_options	= aufs_show_options,
++	.statfs		= aufs_statfs,
++	.put_super	= aufs_put_super,
++	.sync_fs	= aufs_sync_fs,
++	.remount_fs	= aufs_remount_fs
++};
++
++/* ---------------------------------------------------------------------- */
++
++static int alloc_root(struct super_block *sb)
++{
++	int err;
++	struct inode *inode;
++	struct dentry *root;
++
++	err = -ENOMEM;
++	inode = au_iget_locked(sb, AUFS_ROOT_INO);
++	err = PTR_ERR(inode);
++	if (IS_ERR(inode))
++		goto out;
++
++	inode->i_op = aufs_iop + AuIop_DIR; /* with getattr by default */
++	inode->i_fop = &aufs_dir_fop;
++	inode->i_mode = S_IFDIR;
++	set_nlink(inode, 2);
++	unlock_new_inode(inode);
++
++	root = d_make_root(inode);
++	if (unlikely(!root))
++		goto out;
++	err = PTR_ERR(root);
++	if (IS_ERR(root))
++		goto out;
++
++	err = au_di_init(root);
++	if (!err) {
++		sb->s_root = root;
++		return 0; /* success */
++	}
++	dput(root);
++
++out:
++	return err;
++}
++
++static int aufs_fill_super(struct super_block *sb, void *raw_data,
++			   int silent __maybe_unused)
++{
++	int err;
++	struct au_opts opts = {
++		.opt = NULL
++	};
++	struct au_sbinfo *sbinfo;
++	struct dentry *root;
++	struct inode *inode;
++	char *arg = raw_data;
++
++	if (unlikely(!arg || !*arg)) {
++		err = -EINVAL;
++		pr_err("no arg\n");
++		goto out;
++	}
++
++	err = -ENOMEM;
++	opts.opt = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!opts.opt))
++		goto out;
++	opts.max_opt = PAGE_SIZE / sizeof(*opts.opt);
++	opts.sb_flags = sb->s_flags;
++
++	err = au_si_alloc(sb);
++	if (unlikely(err))
++		goto out_opts;
++	sbinfo = au_sbi(sb);
++
++	/* all timestamps always follow the ones on the branch */
++	sb->s_flags |= SB_NOATIME | SB_NODIRATIME;
++	sb->s_flags |= SB_I_VERSION; /* do we really need this? */
++	sb->s_op = &aufs_sop;
++	sb->s_d_op = &aufs_dop;
++	sb->s_magic = AUFS_SUPER_MAGIC;
++	sb->s_maxbytes = 0;
++	sb->s_stack_depth = 1;
++	au_export_init(sb);
++	au_xattr_init(sb);
++
++	err = alloc_root(sb);
++	if (unlikely(err)) {
++		si_write_unlock(sb);
++		goto out_info;
++	}
++	root = sb->s_root;
++	inode = d_inode(root);
++
++	/*
++	 * actually we can parse options regardless aufs lock here.
++	 * but at remount time, parsing must be done before aufs lock.
++	 * so we follow the same rule.
++	 */
++	ii_write_lock_parent(inode);
++	aufs_write_unlock(root);
++	err = au_opts_parse(sb, arg, &opts);
++	if (unlikely(err))
++		goto out_root;
++
++	/* lock vfs_inode first, then aufs. */
++	inode_lock(inode);
++	aufs_write_lock(root);
++	err = au_opts_mount(sb, &opts);
++	au_opts_free(&opts);
++	if (!err && au_ftest_si(sbinfo, NO_DREVAL)) {
++		sb->s_d_op = &aufs_dop_noreval;
++		pr_info("%ps\n", sb->s_d_op);
++		au_refresh_dop(root, /*force_reval*/0);
++		sbinfo->si_iop_array = aufs_iop_nogetattr;
++		au_refresh_iop(inode, /*force_getattr*/0);
++	}
++	aufs_write_unlock(root);
++	inode_unlock(inode);
++	if (!err)
++		goto out_opts; /* success */
++
++out_root:
++	dput(root);
++	sb->s_root = NULL;
++out_info:
++	kobject_put(&sbinfo->si_kobj);
++	sb->s_fs_info = NULL;
++out_opts:
++	free_page((unsigned long)opts.opt);
++out:
++	AuTraceErr(err);
++	err = cvt_err(err);
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct dentry *aufs_mount(struct file_system_type *fs_type, int flags,
++				 const char *dev_name __maybe_unused,
++				 void *raw_data)
++{
++	struct dentry *root;
++
++	/* all timestamps always follow the ones on the branch */
++	/* mnt->mnt_flags |= MNT_NOATIME | MNT_NODIRATIME; */
++	root = mount_nodev(fs_type, flags, raw_data, aufs_fill_super);
++	if (IS_ERR(root))
++		goto out;
++
++	au_sbilist_add(root->d_sb);
++
++out:
++	return root;
++}
++
++static void aufs_kill_sb(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++
++	sbinfo = au_sbi(sb);
++	if (sbinfo) {
++		au_sbilist_del(sb);
++		aufs_write_lock(sb->s_root);
++		au_fhsm_fin(sb);
++		if (sbinfo->si_wbr_create_ops->fin)
++			sbinfo->si_wbr_create_ops->fin(sb);
++		if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) {
++			au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE);
++			au_remount_refresh(sb, /*do_idop*/0);
++		}
++		if (au_opt_test(sbinfo->si_mntflags, PLINK))
++			au_plink_put(sb, /*verbose*/1);
++		au_xino_clr(sb);
++		au_dr_opt_flush(sb);
++		sbinfo->si_sb = NULL;
++		aufs_write_unlock(sb->s_root);
++		au_nwt_flush(&sbinfo->si_nowait);
++	}
++	kill_anon_super(sb);
++}
++
++struct file_system_type aufs_fs_type = {
++	.name		= AUFS_FSTYPE,
++	/* a race between rename and others */
++	.fs_flags	= FS_RENAME_DOES_D_MOVE,
++	.mount		= aufs_mount,
++	.kill_sb	= aufs_kill_sb,
++	/* no need to __module_get() and module_put(). */
++	.owner		= THIS_MODULE,
++};
+diff -Nurp linux-5.4/fs/aufs/super.h linux-5.4-aufs/fs/aufs/super.h
+--- linux-5.4/fs/aufs/super.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/super.h	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,576 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * super_block operations
++ */
++
++#ifndef __AUFS_SUPER_H__
++#define __AUFS_SUPER_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fs.h>
++#include <linux/kobject.h>
++#include "hbl.h"
++#include "lcnt.h"
++#include "rwsem.h"
++#include "wkq.h"
++
++/* policies to select one among multiple writable branches */
++struct au_wbr_copyup_operations {
++	int (*copyup)(struct dentry *dentry);
++};
++
++#define AuWbr_DIR	1		/* target is a dir */
++#define AuWbr_PARENT	(1 << 1)	/* always require a parent */
++
++#define au_ftest_wbr(flags, name)	((flags) & AuWbr_##name)
++#define au_fset_wbr(flags, name)	{ (flags) |= AuWbr_##name; }
++#define au_fclr_wbr(flags, name)	{ (flags) &= ~AuWbr_##name; }
++
++struct au_wbr_create_operations {
++	int (*create)(struct dentry *dentry, unsigned int flags);
++	int (*init)(struct super_block *sb);
++	int (*fin)(struct super_block *sb);
++};
++
++struct au_wbr_mfs {
++	struct mutex	mfs_lock; /* protect this structure */
++	unsigned long	mfs_jiffy;
++	unsigned long	mfs_expire;
++	aufs_bindex_t	mfs_bindex;
++
++	unsigned long long	mfsrr_bytes;
++	unsigned long long	mfsrr_watermark;
++};
++
++#define AuPlink_NHASH 100
++static inline int au_plink_hash(ino_t ino)
++{
++	return ino % AuPlink_NHASH;
++}
++
++/* File-based Hierarchical Storage Management */
++struct au_fhsm {
++#ifdef CONFIG_AUFS_FHSM
++	/* allow only one process who can receive the notification */
++	spinlock_t		fhsm_spin;
++	pid_t			fhsm_pid;
++	wait_queue_head_t	fhsm_wqh;
++	atomic_t		fhsm_readable;
++
++	/* these are protected by si_rwsem */
++	unsigned long		fhsm_expire;
++	aufs_bindex_t		fhsm_bottom;
++#endif
++};
++
++struct au_branch;
++struct au_sbinfo {
++	/* nowait tasks in the system-wide workqueue */
++	struct au_nowait_tasks	si_nowait;
++
++	/*
++	 * tried sb->s_umount, but failed due to the dependency between i_mutex.
++	 * rwsem for au_sbinfo is necessary.
++	 */
++	struct au_rwsem		si_rwsem;
++
++	/*
++	 * dirty approach to protect sb->sb_inodes and ->s_files (gone) from
++	 * remount.
++	 */
++	au_lcnt_t		si_ninodes, si_nfiles;
++
++	/* branch management */
++	unsigned int		si_generation;
++
++	/* see AuSi_ flags */
++	unsigned char		au_si_status;
++
++	aufs_bindex_t		si_bbot;
++
++	/* dirty trick to keep br_id plus */
++	unsigned int		si_last_br_id :
++				sizeof(aufs_bindex_t) * BITS_PER_BYTE - 1;
++	struct au_branch	**si_branch;
++
++	/* policy to select a writable branch */
++	unsigned char		si_wbr_copyup;
++	unsigned char		si_wbr_create;
++	struct au_wbr_copyup_operations *si_wbr_copyup_ops;
++	struct au_wbr_create_operations *si_wbr_create_ops;
++
++	/* round robin */
++	atomic_t		si_wbr_rr_next;
++
++	/* most free space */
++	struct au_wbr_mfs	si_wbr_mfs;
++
++	/* File-based Hierarchical Storage Management */
++	struct au_fhsm		si_fhsm;
++
++	/* mount flags */
++	/* include/asm-ia64/siginfo.h defines a macro named si_flags */
++	unsigned int		si_mntflags;
++
++	/* external inode number (bitmap and translation table) */
++	vfs_readf_t		si_xread;
++	vfs_writef_t		si_xwrite;
++	loff_t			si_ximaxent;	/* max entries in a xino */
++
++	struct file		*si_xib;
++	struct mutex		si_xib_mtx; /* protect xib members */
++	unsigned long		*si_xib_buf;
++	unsigned long		si_xib_last_pindex;
++	int			si_xib_next_bit;
++
++	unsigned long		si_xino_jiffy;
++	unsigned long		si_xino_expire;
++	/* reserved for future use */
++	/* unsigned long long	si_xib_limit; */	/* Max xib file size */
++
++#ifdef CONFIG_AUFS_EXPORT
++	/* i_generation */
++	/* todo: make xigen file an array to support many inode numbers */
++	struct file		*si_xigen;
++	atomic_t		si_xigen_next;
++#endif
++
++	/* dirty trick to support atomic_open */
++	struct hlist_bl_head	si_aopen;
++
++	/* vdir parameters */
++	unsigned long		si_rdcache;	/* max cache time in jiffies */
++	unsigned int		si_rdblk;	/* deblk size */
++	unsigned int		si_rdhash;	/* hash size */
++
++	/*
++	 * If the number of whiteouts are larger than si_dirwh, leave all of
++	 * them after au_whtmp_ren to reduce the cost of rmdir(2).
++	 * future fsck.aufs or kernel thread will remove them later.
++	 * Otherwise, remove all whiteouts and the dir in rmdir(2).
++	 */
++	unsigned int		si_dirwh;
++
++	/* pseudo_link list */
++	struct hlist_bl_head	si_plink[AuPlink_NHASH];
++	wait_queue_head_t	si_plink_wq;
++	spinlock_t		si_plink_maint_lock;
++	pid_t			si_plink_maint_pid;
++
++	/* file list */
++	struct hlist_bl_head	si_files;
++
++	/* with/without getattr, brother of sb->s_d_op */
++	struct inode_operations *si_iop_array;
++
++	/*
++	 * sysfs and lifetime management.
++	 * this is not a small structure and it may be a waste of memory in case
++	 * of sysfs is disabled, particularly when many aufs-es are mounted.
++	 * but using sysfs is majority.
++	 */
++	struct kobject		si_kobj;
++#ifdef CONFIG_DEBUG_FS
++	struct dentry		 *si_dbgaufs;
++	struct dentry		 *si_dbgaufs_plink;
++	struct dentry		 *si_dbgaufs_xib;
++#ifdef CONFIG_AUFS_EXPORT
++	struct dentry		 *si_dbgaufs_xigen;
++#endif
++#endif
++
++#ifdef CONFIG_AUFS_SBILIST
++	struct hlist_bl_node	si_list;
++#endif
++
++	/* dirty, necessary for unmounting, sysfs and sysrq */
++	struct super_block	*si_sb;
++};
++
++/* sbinfo status flags */
++/*
++ * set true when refresh_dirs() failed at remount time.
++ * then try refreshing dirs at access time again.
++ * if it is false, refreshing dirs at access time is unnecessary
++ */
++#define AuSi_FAILED_REFRESH_DIR	1
++#define AuSi_FHSM		(1 << 1)	/* fhsm is active now */
++#define AuSi_NO_DREVAL		(1 << 2)	/* disable all d_revalidate */
++
++#ifndef CONFIG_AUFS_FHSM
++#undef AuSi_FHSM
++#define AuSi_FHSM		0
++#endif
++
++static inline unsigned char au_do_ftest_si(struct au_sbinfo *sbi,
++					   unsigned int flag)
++{
++	AuRwMustAnyLock(&sbi->si_rwsem);
++	return sbi->au_si_status & flag;
++}
++#define au_ftest_si(sbinfo, name)	au_do_ftest_si(sbinfo, AuSi_##name)
++#define au_fset_si(sbinfo, name) do { \
++	AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
++	(sbinfo)->au_si_status |= AuSi_##name; \
++} while (0)
++#define au_fclr_si(sbinfo, name) do { \
++	AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
++	(sbinfo)->au_si_status &= ~AuSi_##name; \
++} while (0)
++
++/* ---------------------------------------------------------------------- */
++
++/* policy to select one among writable branches */
++#define AuWbrCopyup(sbinfo, ...) \
++	((sbinfo)->si_wbr_copyup_ops->copyup(__VA_ARGS__))
++#define AuWbrCreate(sbinfo, ...) \
++	((sbinfo)->si_wbr_create_ops->create(__VA_ARGS__))
++
++/* flags for si_read_lock()/aufs_read_lock()/di_read_lock() */
++#define AuLock_DW		1		/* write-lock dentry */
++#define AuLock_IR		(1 << 1)	/* read-lock inode */
++#define AuLock_IW		(1 << 2)	/* write-lock inode */
++#define AuLock_FLUSH		(1 << 3)	/* wait for 'nowait' tasks */
++#define AuLock_DIRS		(1 << 4)	/* target is a pair of dirs */
++						/* except RENAME_EXCHANGE */
++#define AuLock_NOPLM		(1 << 5)	/* return err in plm mode */
++#define AuLock_NOPLMW		(1 << 6)	/* wait for plm mode ends */
++#define AuLock_GEN		(1 << 7)	/* test digen/iigen */
++#define au_ftest_lock(flags, name)	((flags) & AuLock_##name)
++#define au_fset_lock(flags, name) \
++	do { (flags) |= AuLock_##name; } while (0)
++#define au_fclr_lock(flags, name) \
++	do { (flags) &= ~AuLock_##name; } while (0)
++
++/* ---------------------------------------------------------------------- */
++
++/* super.c */
++extern struct file_system_type aufs_fs_type;
++struct inode *au_iget_locked(struct super_block *sb, ino_t ino);
++typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array,
++					   unsigned long long max, void *arg);
++void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
++		     struct super_block *sb, void *arg);
++struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max);
++void au_iarray_free(struct inode **a, unsigned long long max);
++
++/* sbinfo.c */
++void au_si_free(struct kobject *kobj);
++int au_si_alloc(struct super_block *sb);
++int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink);
++
++unsigned int au_sigen_inc(struct super_block *sb);
++aufs_bindex_t au_new_br_id(struct super_block *sb);
++
++int si_read_lock(struct super_block *sb, int flags);
++int si_write_lock(struct super_block *sb, int flags);
++int aufs_read_lock(struct dentry *dentry, int flags);
++void aufs_read_unlock(struct dentry *dentry, int flags);
++void aufs_write_lock(struct dentry *dentry);
++void aufs_write_unlock(struct dentry *dentry);
++int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags);
++void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2);
++
++/* wbr_policy.c */
++extern struct au_wbr_copyup_operations au_wbr_copyup_ops[];
++extern struct au_wbr_create_operations au_wbr_create_ops[];
++int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst);
++int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex);
++int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop);
++
++/* mvdown.c */
++int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg);
++
++#ifdef CONFIG_AUFS_FHSM
++/* fhsm.c */
++
++static inline pid_t au_fhsm_pid(struct au_fhsm *fhsm)
++{
++	pid_t pid;
++
++	spin_lock(&fhsm->fhsm_spin);
++	pid = fhsm->fhsm_pid;
++	spin_unlock(&fhsm->fhsm_spin);
++
++	return pid;
++}
++
++void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force);
++void au_fhsm_wrote_all(struct super_block *sb, int force);
++int au_fhsm_fd(struct super_block *sb, int oflags);
++int au_fhsm_br_alloc(struct au_branch *br);
++void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex);
++void au_fhsm_fin(struct super_block *sb);
++void au_fhsm_init(struct au_sbinfo *sbinfo);
++void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec);
++void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo);
++#else
++AuStubVoid(au_fhsm_wrote, struct super_block *sb, aufs_bindex_t bindex,
++	   int force)
++AuStubVoid(au_fhsm_wrote_all, struct super_block *sb, int force)
++AuStub(int, au_fhsm_fd, return -EOPNOTSUPP, struct super_block *sb, int oflags)
++AuStub(pid_t, au_fhsm_pid, return 0, struct au_fhsm *fhsm)
++AuStubInt0(au_fhsm_br_alloc, struct au_branch *br)
++AuStubVoid(au_fhsm_set_bottom, struct super_block *sb, aufs_bindex_t bindex)
++AuStubVoid(au_fhsm_fin, struct super_block *sb)
++AuStubVoid(au_fhsm_init, struct au_sbinfo *sbinfo)
++AuStubVoid(au_fhsm_set, struct au_sbinfo *sbinfo, unsigned int sec)
++AuStubVoid(au_fhsm_show, struct seq_file *seq, struct au_sbinfo *sbinfo)
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct au_sbinfo *au_sbi(struct super_block *sb)
++{
++	return sb->s_fs_info;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_EXPORT
++int au_test_nfsd(void);
++void au_export_init(struct super_block *sb);
++void au_xigen_inc(struct inode *inode);
++int au_xigen_new(struct inode *inode);
++int au_xigen_set(struct super_block *sb, struct path *path);
++void au_xigen_clr(struct super_block *sb);
++
++static inline int au_busy_or_stale(void)
++{
++	if (!au_test_nfsd())
++		return -EBUSY;
++	return -ESTALE;
++}
++#else
++AuStubInt0(au_test_nfsd, void)
++AuStubVoid(au_export_init, struct super_block *sb)
++AuStubVoid(au_xigen_inc, struct inode *inode)
++AuStubInt0(au_xigen_new, struct inode *inode)
++AuStubInt0(au_xigen_set, struct super_block *sb, struct path *path)
++AuStubVoid(au_xigen_clr, struct super_block *sb)
++AuStub(int, au_busy_or_stale, return -EBUSY, void)
++#endif /* CONFIG_AUFS_EXPORT */
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_SBILIST
++/* module.c */
++extern struct hlist_bl_head au_sbilist;
++
++static inline void au_sbilist_init(void)
++{
++	INIT_HLIST_BL_HEAD(&au_sbilist);
++}
++
++static inline void au_sbilist_add(struct super_block *sb)
++{
++	au_hbl_add(&au_sbi(sb)->si_list, &au_sbilist);
++}
++
++static inline void au_sbilist_del(struct super_block *sb)
++{
++	au_hbl_del(&au_sbi(sb)->si_list, &au_sbilist);
++}
++
++#ifdef CONFIG_AUFS_MAGIC_SYSRQ
++static inline void au_sbilist_lock(void)
++{
++	hlist_bl_lock(&au_sbilist);
++}
++
++static inline void au_sbilist_unlock(void)
++{
++	hlist_bl_unlock(&au_sbilist);
++}
++#define AuGFP_SBILIST	GFP_ATOMIC
++#else
++AuStubVoid(au_sbilist_lock, void)
++AuStubVoid(au_sbilist_unlock, void)
++#define AuGFP_SBILIST	GFP_NOFS
++#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
++#else
++AuStubVoid(au_sbilist_init, void)
++AuStubVoid(au_sbilist_add, struct super_block *sb)
++AuStubVoid(au_sbilist_del, struct super_block *sb)
++AuStubVoid(au_sbilist_lock, void)
++AuStubVoid(au_sbilist_unlock, void)
++#define AuGFP_SBILIST	GFP_NOFS
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static inline void dbgaufs_si_null(struct au_sbinfo *sbinfo)
++{
++	/*
++	 * This function is a dynamic '__init' function actually,
++	 * so the tiny check for si_rwsem is unnecessary.
++	 */
++	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
++#ifdef CONFIG_DEBUG_FS
++	sbinfo->si_dbgaufs = NULL;
++	sbinfo->si_dbgaufs_plink = NULL;
++	sbinfo->si_dbgaufs_xib = NULL;
++#ifdef CONFIG_AUFS_EXPORT
++	sbinfo->si_dbgaufs_xigen = NULL;
++#endif
++#endif
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* current->atomic_flags */
++/* this value should never corrupt the ones defined in linux/sched.h */
++#define PFA_AUFS	0x10
++
++TASK_PFA_TEST(AUFS, test_aufs)	/* task_test_aufs */
++TASK_PFA_SET(AUFS, aufs)	/* task_set_aufs */
++TASK_PFA_CLEAR(AUFS, aufs)	/* task_clear_aufs */
++
++static inline int si_pid_test(struct super_block *sb)
++{
++	return !!task_test_aufs(current);
++}
++
++static inline void si_pid_clr(struct super_block *sb)
++{
++	AuDebugOn(!task_test_aufs(current));
++	task_clear_aufs(current);
++}
++
++static inline void si_pid_set(struct super_block *sb)
++{
++	AuDebugOn(task_test_aufs(current));
++	task_set_aufs(current);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* lock superblock. mainly for entry point functions */
++#define __si_read_lock(sb)	au_rw_read_lock(&au_sbi(sb)->si_rwsem)
++#define __si_write_lock(sb)	au_rw_write_lock(&au_sbi(sb)->si_rwsem)
++#define __si_read_trylock(sb)	au_rw_read_trylock(&au_sbi(sb)->si_rwsem)
++#define __si_write_trylock(sb)	au_rw_write_trylock(&au_sbi(sb)->si_rwsem)
++/*
++#define __si_read_trylock_nested(sb) \
++	au_rw_read_trylock_nested(&au_sbi(sb)->si_rwsem)
++#define __si_write_trylock_nested(sb) \
++	au_rw_write_trylock_nested(&au_sbi(sb)->si_rwsem)
++*/
++
++#define __si_read_unlock(sb)	au_rw_read_unlock(&au_sbi(sb)->si_rwsem)
++#define __si_write_unlock(sb)	au_rw_write_unlock(&au_sbi(sb)->si_rwsem)
++#define __si_downgrade_lock(sb)	au_rw_dgrade_lock(&au_sbi(sb)->si_rwsem)
++
++#define SiMustNoWaiters(sb)	AuRwMustNoWaiters(&au_sbi(sb)->si_rwsem)
++#define SiMustAnyLock(sb)	AuRwMustAnyLock(&au_sbi(sb)->si_rwsem)
++#define SiMustWriteLock(sb)	AuRwMustWriteLock(&au_sbi(sb)->si_rwsem)
++
++static inline void si_noflush_read_lock(struct super_block *sb)
++{
++	__si_read_lock(sb);
++	si_pid_set(sb);
++}
++
++static inline int si_noflush_read_trylock(struct super_block *sb)
++{
++	int locked;
++
++	locked = __si_read_trylock(sb);
++	if (locked)
++		si_pid_set(sb);
++	return locked;
++}
++
++static inline void si_noflush_write_lock(struct super_block *sb)
++{
++	__si_write_lock(sb);
++	si_pid_set(sb);
++}
++
++static inline int si_noflush_write_trylock(struct super_block *sb)
++{
++	int locked;
++
++	locked = __si_write_trylock(sb);
++	if (locked)
++		si_pid_set(sb);
++	return locked;
++}
++
++#if 0 /* reserved */
++static inline int si_read_trylock(struct super_block *sb, int flags)
++{
++	if (au_ftest_lock(flags, FLUSH))
++		au_nwt_flush(&au_sbi(sb)->si_nowait);
++	return si_noflush_read_trylock(sb);
++}
++#endif
++
++static inline void si_read_unlock(struct super_block *sb)
++{
++	si_pid_clr(sb);
++	__si_read_unlock(sb);
++}
++
++#if 0 /* reserved */
++static inline int si_write_trylock(struct super_block *sb, int flags)
++{
++	if (au_ftest_lock(flags, FLUSH))
++		au_nwt_flush(&au_sbi(sb)->si_nowait);
++	return si_noflush_write_trylock(sb);
++}
++#endif
++
++static inline void si_write_unlock(struct super_block *sb)
++{
++	si_pid_clr(sb);
++	__si_write_unlock(sb);
++}
++
++#if 0 /* reserved */
++static inline void si_downgrade_lock(struct super_block *sb)
++{
++	__si_downgrade_lock(sb);
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++static inline aufs_bindex_t au_sbbot(struct super_block *sb)
++{
++	SiMustAnyLock(sb);
++	return au_sbi(sb)->si_bbot;
++}
++
++static inline unsigned int au_mntflags(struct super_block *sb)
++{
++	SiMustAnyLock(sb);
++	return au_sbi(sb)->si_mntflags;
++}
++
++static inline unsigned int au_sigen(struct super_block *sb)
++{
++	SiMustAnyLock(sb);
++	return au_sbi(sb)->si_generation;
++}
++
++static inline struct au_branch *au_sbr(struct super_block *sb,
++				       aufs_bindex_t bindex)
++{
++	SiMustAnyLock(sb);
++	return au_sbi(sb)->si_branch[0 + bindex];
++}
++
++static inline loff_t au_xi_maxent(struct super_block *sb)
++{
++	SiMustAnyLock(sb);
++	return au_sbi(sb)->si_ximaxent;
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_SUPER_H__ */
+diff -Nurp linux-5.4/fs/aufs/sysaufs.c linux-5.4-aufs/fs/aufs/sysaufs.c
+--- linux-5.4/fs/aufs/sysaufs.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/sysaufs.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,80 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sysfs interface and lifetime management
++ * they are necessary regardless sysfs is disabled.
++ */
++
++#include <linux/random.h>
++#include "aufs.h"
++
++unsigned long sysaufs_si_mask;
++struct kset *sysaufs_kset;
++
++#define AuSiAttr(_name) { \
++	.attr   = { .name = __stringify(_name), .mode = 0444 },	\
++	.show   = sysaufs_si_##_name,				\
++}
++
++static struct sysaufs_si_attr sysaufs_si_attr_xi_path = AuSiAttr(xi_path);
++struct attribute *sysaufs_si_attrs[] = {
++	&sysaufs_si_attr_xi_path.attr,
++	NULL,
++};
++
++static const struct sysfs_ops au_sbi_ops = {
++	.show   = sysaufs_si_show
++};
++
++static struct kobj_type au_sbi_ktype = {
++	.release	= au_si_free,
++	.sysfs_ops	= &au_sbi_ops,
++	.default_attrs	= sysaufs_si_attrs
++};
++
++/* ---------------------------------------------------------------------- */
++
++int sysaufs_si_init(struct au_sbinfo *sbinfo)
++{
++	int err;
++
++	sbinfo->si_kobj.kset = sysaufs_kset;
++	/* cf. sysaufs_name() */
++	err = kobject_init_and_add
++		(&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL,
++		 SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo));
++
++	return err;
++}
++
++void sysaufs_fin(void)
++{
++	sysfs_remove_group(&sysaufs_kset->kobj, sysaufs_attr_group);
++	kset_unregister(sysaufs_kset);
++}
++
++int __init sysaufs_init(void)
++{
++	int err;
++
++	do {
++		get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask));
++	} while (!sysaufs_si_mask);
++
++	err = -EINVAL;
++	sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj);
++	if (unlikely(!sysaufs_kset))
++		goto out;
++	err = PTR_ERR(sysaufs_kset);
++	if (IS_ERR(sysaufs_kset))
++		goto out;
++	err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group);
++	if (unlikely(err))
++		kset_unregister(sysaufs_kset);
++
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/sysaufs.h linux-5.4-aufs/fs/aufs/sysaufs.h
+--- linux-5.4/fs/aufs/sysaufs.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/sysaufs.h	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,89 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sysfs interface and mount lifetime management
++ */
++
++#ifndef __SYSAUFS_H__
++#define __SYSAUFS_H__
++
++#ifdef __KERNEL__
++
++#include <linux/sysfs.h>
++#include "module.h"
++
++struct super_block;
++struct au_sbinfo;
++
++struct sysaufs_si_attr {
++	struct attribute attr;
++	int (*show)(struct seq_file *seq, struct super_block *sb);
++};
++
++/* ---------------------------------------------------------------------- */
++
++/* sysaufs.c */
++extern unsigned long sysaufs_si_mask;
++extern struct kset *sysaufs_kset;
++extern struct attribute *sysaufs_si_attrs[];
++int sysaufs_si_init(struct au_sbinfo *sbinfo);
++int __init sysaufs_init(void);
++void sysaufs_fin(void);
++
++/* ---------------------------------------------------------------------- */
++
++/* some people doesn't like to show a pointer in kernel */
++static inline unsigned long sysaufs_si_id(struct au_sbinfo *sbinfo)
++{
++	return sysaufs_si_mask ^ (unsigned long)sbinfo;
++}
++
++#define SysaufsSiNamePrefix	"si_"
++#define SysaufsSiNameLen	(sizeof(SysaufsSiNamePrefix) + 16)
++static inline void sysaufs_name(struct au_sbinfo *sbinfo, char *name)
++{
++	snprintf(name, SysaufsSiNameLen, SysaufsSiNamePrefix "%lx",
++		 sysaufs_si_id(sbinfo));
++}
++
++struct au_branch;
++#ifdef CONFIG_SYSFS
++/* sysfs.c */
++extern struct attribute_group *sysaufs_attr_group;
++
++int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb);
++ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
++			 char *buf);
++long au_brinfo_ioctl(struct file *file, unsigned long arg);
++#ifdef CONFIG_COMPAT
++long au_brinfo_compat_ioctl(struct file *file, unsigned long arg);
++#endif
++
++void sysaufs_br_init(struct au_branch *br);
++void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex);
++void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
++
++#define sysaufs_brs_init()	do {} while (0)
++
++#else
++#define sysaufs_attr_group	NULL
++
++AuStubInt0(sysaufs_si_xi_path, struct seq_file *seq, struct super_block *sb)
++AuStub(ssize_t, sysaufs_si_show, return 0, struct kobject *kobj,
++       struct attribute *attr, char *buf)
++AuStubVoid(sysaufs_br_init, struct au_branch *br)
++AuStubVoid(sysaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex)
++AuStubVoid(sysaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
++
++static inline void sysaufs_brs_init(void)
++{
++	sysaufs_brs = 0;
++}
++
++#endif /* CONFIG_SYSFS */
++
++#endif /* __KERNEL__ */
++#endif /* __SYSAUFS_H__ */
+diff -Nurp linux-5.4/fs/aufs/sysfs.c linux-5.4-aufs/fs/aufs/sysfs.c
+--- linux-5.4/fs/aufs/sysfs.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/sysfs.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,338 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sysfs interface
++ */
++
++#include <linux/compat.h>
++#include <linux/seq_file.h>
++#include "aufs.h"
++
++static struct attribute *au_attr[] = {
++	NULL,	/* need to NULL terminate the list of attributes */
++};
++
++static struct attribute_group sysaufs_attr_group_body = {
++	.attrs = au_attr
++};
++
++struct attribute_group *sysaufs_attr_group = &sysaufs_attr_group_body;
++
++/* ---------------------------------------------------------------------- */
++
++int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb)
++{
++	int err;
++
++	SiMustAnyLock(sb);
++
++	err = 0;
++	if (au_opt_test(au_mntflags(sb), XINO)) {
++		err = au_xino_path(seq, au_sbi(sb)->si_xib);
++		seq_putc(seq, '\n');
++	}
++	return err;
++}
++
++/*
++ * the lifetime of branch is independent from the entry under sysfs.
++ * sysfs handles the lifetime of the entry, and never call ->show() after it is
++ * unlinked.
++ */
++static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
++			 aufs_bindex_t bindex, int idx)
++{
++	int err;
++	struct path path;
++	struct dentry *root;
++	struct au_branch *br;
++	au_br_perm_str_t perm;
++
++	AuDbg("b%d\n", bindex);
++
++	err = 0;
++	root = sb->s_root;
++	di_read_lock_parent(root, !AuLock_IR);
++	br = au_sbr(sb, bindex);
++
++	switch (idx) {
++	case AuBrSysfs_BR:
++		path.mnt = au_br_mnt(br);
++		path.dentry = au_h_dptr(root, bindex);
++		err = au_seq_path(seq, &path);
++		if (!err) {
++			au_optstr_br_perm(&perm, br->br_perm);
++			seq_printf(seq, "=%s\n", perm.a);
++		}
++		break;
++	case AuBrSysfs_BRID:
++		seq_printf(seq, "%d\n", br->br_id);
++		break;
++	}
++	di_read_unlock(root, !AuLock_IR);
++	if (unlikely(err || seq_has_overflowed(seq)))
++		err = -E2BIG;
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static struct seq_file *au_seq(char *p, ssize_t len)
++{
++	struct seq_file *seq;
++
++	seq = kzalloc(sizeof(*seq), GFP_NOFS);
++	if (seq) {
++		/* mutex_init(&seq.lock); */
++		seq->buf = p;
++		seq->size = len;
++		return seq; /* success */
++	}
++
++	seq = ERR_PTR(-ENOMEM);
++	return seq;
++}
++
++#define SysaufsBr_PREFIX	"br"
++#define SysaufsBrid_PREFIX	"brid"
++
++/* todo: file size may exceed PAGE_SIZE */
++ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
++			char *buf)
++{
++	ssize_t err;
++	int idx;
++	long l;
++	aufs_bindex_t bbot;
++	struct au_sbinfo *sbinfo;
++	struct super_block *sb;
++	struct seq_file *seq;
++	char *name;
++	struct attribute **cattr;
++
++	sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
++	sb = sbinfo->si_sb;
++
++	/*
++	 * prevent a race condition between sysfs and aufs.
++	 * for instance, sysfs_file_read() calls sysfs_get_active_two() which
++	 * prohibits maintaining the sysfs entries.
++	 * hew we acquire read lock after sysfs_get_active_two().
++	 * on the other hand, the remount process may maintain the sysfs/aufs
++	 * entries after acquiring write lock.
++	 * it can cause a deadlock.
++	 * simply we gave up processing read here.
++	 */
++	err = -EBUSY;
++	if (unlikely(!si_noflush_read_trylock(sb)))
++		goto out;
++
++	seq = au_seq(buf, PAGE_SIZE);
++	err = PTR_ERR(seq);
++	if (IS_ERR(seq))
++		goto out_unlock;
++
++	name = (void *)attr->name;
++	cattr = sysaufs_si_attrs;
++	while (*cattr) {
++		if (!strcmp(name, (*cattr)->name)) {
++			err = container_of(*cattr, struct sysaufs_si_attr, attr)
++				->show(seq, sb);
++			goto out_seq;
++		}
++		cattr++;
++	}
++
++	if (!strncmp(name, SysaufsBrid_PREFIX,
++		     sizeof(SysaufsBrid_PREFIX) - 1)) {
++		idx = AuBrSysfs_BRID;
++		name += sizeof(SysaufsBrid_PREFIX) - 1;
++	} else if (!strncmp(name, SysaufsBr_PREFIX,
++			    sizeof(SysaufsBr_PREFIX) - 1)) {
++		idx = AuBrSysfs_BR;
++		name += sizeof(SysaufsBr_PREFIX) - 1;
++	} else
++		  BUG();
++
++	err = kstrtol(name, 10, &l);
++	if (!err) {
++		bbot = au_sbbot(sb);
++		if (l <= bbot)
++			err = sysaufs_si_br(seq, sb, (aufs_bindex_t)l, idx);
++		else
++			err = -ENOENT;
++	}
++
++out_seq:
++	if (!err) {
++		err = seq->count;
++		/* sysfs limit */
++		if (unlikely(err == PAGE_SIZE))
++			err = -EFBIG;
++	}
++	au_kfree_rcu(seq);
++out_unlock:
++	si_read_unlock(sb);
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_brinfo(struct super_block *sb, union aufs_brinfo __user *arg)
++{
++	int err;
++	int16_t brid;
++	aufs_bindex_t bindex, bbot;
++	size_t sz;
++	char *buf;
++	struct seq_file *seq;
++	struct au_branch *br;
++
++	si_read_lock(sb, AuLock_FLUSH);
++	bbot = au_sbbot(sb);
++	err = bbot + 1;
++	if (!arg)
++		goto out;
++
++	err = -ENOMEM;
++	buf = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!buf))
++		goto out;
++
++	seq = au_seq(buf, PAGE_SIZE);
++	err = PTR_ERR(seq);
++	if (IS_ERR(seq))
++		goto out_buf;
++
++	sz = sizeof(*arg) - offsetof(union aufs_brinfo, path);
++	for (bindex = 0; bindex <= bbot; bindex++, arg++) {
++		/* VERIFY_WRITE */
++		err = !access_ok(arg, sizeof(*arg));
++		if (unlikely(err))
++			break;
++
++		br = au_sbr(sb, bindex);
++		brid = br->br_id;
++		BUILD_BUG_ON(sizeof(brid) != sizeof(arg->id));
++		err = __put_user(brid, &arg->id);
++		if (unlikely(err))
++			break;
++
++		BUILD_BUG_ON(sizeof(br->br_perm) != sizeof(arg->perm));
++		err = __put_user(br->br_perm, &arg->perm);
++		if (unlikely(err))
++			break;
++
++		err = au_seq_path(seq, &br->br_path);
++		if (unlikely(err))
++			break;
++		seq_putc(seq, '\0');
++		if (!seq_has_overflowed(seq)) {
++			err = copy_to_user(arg->path, seq->buf, seq->count);
++			seq->count = 0;
++			if (unlikely(err))
++				break;
++		} else {
++			err = -E2BIG;
++			goto out_seq;
++		}
++	}
++	if (unlikely(err))
++		err = -EFAULT;
++
++out_seq:
++	au_kfree_rcu(seq);
++out_buf:
++	free_page((unsigned long)buf);
++out:
++	si_read_unlock(sb);
++	return err;
++}
++
++long au_brinfo_ioctl(struct file *file, unsigned long arg)
++{
++	return au_brinfo(file->f_path.dentry->d_sb, (void __user *)arg);
++}
++
++#ifdef CONFIG_COMPAT
++long au_brinfo_compat_ioctl(struct file *file, unsigned long arg)
++{
++	return au_brinfo(file->f_path.dentry->d_sb, compat_ptr(arg));
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++void sysaufs_br_init(struct au_branch *br)
++{
++	int i;
++	struct au_brsysfs *br_sysfs;
++	struct attribute *attr;
++
++	br_sysfs = br->br_sysfs;
++	for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
++		attr = &br_sysfs->attr;
++		sysfs_attr_init(attr);
++		attr->name = br_sysfs->name;
++		attr->mode = 0444;
++		br_sysfs++;
++	}
++}
++
++void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
++{
++	struct au_branch *br;
++	struct kobject *kobj;
++	struct au_brsysfs *br_sysfs;
++	int i;
++	aufs_bindex_t bbot;
++
++	if (!sysaufs_brs)
++		return;
++
++	kobj = &au_sbi(sb)->si_kobj;
++	bbot = au_sbbot(sb);
++	for (; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		br_sysfs = br->br_sysfs;
++		for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
++			sysfs_remove_file(kobj, &br_sysfs->attr);
++			br_sysfs++;
++		}
++	}
++}
++
++void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex)
++{
++	int err, i;
++	aufs_bindex_t bbot;
++	struct kobject *kobj;
++	struct au_branch *br;
++	struct au_brsysfs *br_sysfs;
++
++	if (!sysaufs_brs)
++		return;
++
++	kobj = &au_sbi(sb)->si_kobj;
++	bbot = au_sbbot(sb);
++	for (; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		br_sysfs = br->br_sysfs;
++		snprintf(br_sysfs[AuBrSysfs_BR].name, sizeof(br_sysfs->name),
++			 SysaufsBr_PREFIX "%d", bindex);
++		snprintf(br_sysfs[AuBrSysfs_BRID].name, sizeof(br_sysfs->name),
++			 SysaufsBrid_PREFIX "%d", bindex);
++		for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
++			err = sysfs_create_file(kobj, &br_sysfs->attr);
++			if (unlikely(err))
++				pr_warn("failed %s under sysfs(%d)\n",
++					br_sysfs->name, err);
++			br_sysfs++;
++		}
++	}
++}
+diff -Nurp linux-5.4/fs/aufs/sysrq.c linux-5.4-aufs/fs/aufs/sysrq.c
+--- linux-5.4/fs/aufs/sysrq.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/sysrq.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,147 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * magic sysrq handler
++ */
++
++/* #include <linux/sysrq.h> */
++#include <linux/writeback.h>
++#include "aufs.h"
++
++/* ---------------------------------------------------------------------- */
++
++static void sysrq_sb(struct super_block *sb)
++{
++	char *plevel;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++	struct hlist_bl_head *files;
++	struct hlist_bl_node *pos;
++	struct au_finfo *finfo;
++
++	plevel = au_plevel;
++	au_plevel = KERN_WARNING;
++
++	/* since we define pr_fmt, call printk directly */
++#define pr(str) printk(KERN_WARNING AUFS_NAME ": " str)
++
++	sbinfo = au_sbi(sb);
++	printk(KERN_WARNING "si=%lx\n", sysaufs_si_id(sbinfo));
++	pr("superblock\n");
++	au_dpri_sb(sb);
++
++#if 0
++	pr("root dentry\n");
++	au_dpri_dentry(sb->s_root);
++	pr("root inode\n");
++	au_dpri_inode(d_inode(sb->s_root));
++#endif
++
++#if 0
++	do {
++		int err, i, j, ndentry;
++		struct au_dcsub_pages dpages;
++		struct au_dpage *dpage;
++
++		err = au_dpages_init(&dpages, GFP_ATOMIC);
++		if (unlikely(err))
++			break;
++		err = au_dcsub_pages(&dpages, sb->s_root, NULL, NULL);
++		if (!err)
++			for (i = 0; i < dpages.ndpage; i++) {
++				dpage = dpages.dpages + i;
++				ndentry = dpage->ndentry;
++				for (j = 0; j < ndentry; j++)
++					au_dpri_dentry(dpage->dentries[j]);
++			}
++		au_dpages_free(&dpages);
++	} while (0);
++#endif
++
++#if 1
++	{
++		struct inode *i;
++
++		pr("isolated inode\n");
++		spin_lock(&sb->s_inode_list_lock);
++		list_for_each_entry(i, &sb->s_inodes, i_sb_list) {
++			spin_lock(&i->i_lock);
++			if (1 || hlist_empty(&i->i_dentry))
++				au_dpri_inode(i);
++			spin_unlock(&i->i_lock);
++		}
++		spin_unlock(&sb->s_inode_list_lock);
++	}
++#endif
++	pr("files\n");
++	files = &au_sbi(sb)->si_files;
++	hlist_bl_lock(files);
++	hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
++		umode_t mode;
++
++		file = finfo->fi_file;
++		mode = file_inode(file)->i_mode;
++		if (!special_file(mode))
++			au_dpri_file(file);
++	}
++	hlist_bl_unlock(files);
++	pr("done\n");
++
++#undef pr
++	au_plevel = plevel;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* module parameter */
++static char *aufs_sysrq_key = "a";
++module_param_named(sysrq, aufs_sysrq_key, charp, 0444);
++MODULE_PARM_DESC(sysrq, "MagicSysRq key for " AUFS_NAME);
++
++static void au_sysrq(int key __maybe_unused)
++{
++	struct au_sbinfo *sbinfo;
++	struct hlist_bl_node *pos;
++
++	lockdep_off();
++	au_sbilist_lock();
++	hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
++		sysrq_sb(sbinfo->si_sb);
++	au_sbilist_unlock();
++	lockdep_on();
++}
++
++static struct sysrq_key_op au_sysrq_op = {
++	.handler	= au_sysrq,
++	.help_msg	= "Aufs",
++	.action_msg	= "Aufs",
++	.enable_mask	= SYSRQ_ENABLE_DUMP
++};
++
++/* ---------------------------------------------------------------------- */
++
++int __init au_sysrq_init(void)
++{
++	int err;
++	char key;
++
++	err = -1;
++	key = *aufs_sysrq_key;
++	if ('a' <= key && key <= 'z')
++		err = register_sysrq_key(key, &au_sysrq_op);
++	if (unlikely(err))
++		pr_err("err %d, sysrq=%c\n", err, key);
++	return err;
++}
++
++void au_sysrq_fin(void)
++{
++	int err;
++
++	err = unregister_sysrq_key(*aufs_sysrq_key, &au_sysrq_op);
++	if (unlikely(err))
++		pr_err("err %d (ignored)\n", err);
++}
+diff -Nurp linux-5.4/fs/aufs/wbr_policy.c linux-5.4-aufs/fs/aufs/wbr_policy.c
+--- linux-5.4/fs/aufs/wbr_policy.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/wbr_policy.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,817 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * policies for selecting one among multiple writable branches
++ */
++
++#include <linux/statfs.h>
++#include "aufs.h"
++
++/* subset of cpup_attr() */
++static noinline_for_stack
++int au_cpdown_attr(struct path *h_path, struct dentry *h_src)
++{
++	int err, sbits;
++	struct iattr ia;
++	struct inode *h_isrc;
++
++	h_isrc = d_inode(h_src);
++	ia.ia_valid = ATTR_FORCE | ATTR_MODE | ATTR_UID | ATTR_GID;
++	ia.ia_mode = h_isrc->i_mode;
++	ia.ia_uid = h_isrc->i_uid;
++	ia.ia_gid = h_isrc->i_gid;
++	sbits = !!(ia.ia_mode & (S_ISUID | S_ISGID));
++	au_cpup_attr_flags(d_inode(h_path->dentry), h_isrc->i_flags);
++	/* no delegation since it is just created */
++	err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
++
++	/* is this nfs only? */
++	if (!err && sbits && au_test_nfs(h_path->dentry->d_sb)) {
++		ia.ia_valid = ATTR_FORCE | ATTR_MODE;
++		ia.ia_mode = h_isrc->i_mode;
++		err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
++	}
++
++	return err;
++}
++
++#define AuCpdown_PARENT_OPQ	1
++#define AuCpdown_WHED		(1 << 1)
++#define AuCpdown_MADE_DIR	(1 << 2)
++#define AuCpdown_DIROPQ		(1 << 3)
++#define au_ftest_cpdown(flags, name)	((flags) & AuCpdown_##name)
++#define au_fset_cpdown(flags, name) \
++	do { (flags) |= AuCpdown_##name; } while (0)
++#define au_fclr_cpdown(flags, name) \
++	do { (flags) &= ~AuCpdown_##name; } while (0)
++
++static int au_cpdown_dir_opq(struct dentry *dentry, aufs_bindex_t bdst,
++			     unsigned int *flags)
++{
++	int err;
++	struct dentry *opq_dentry;
++
++	opq_dentry = au_diropq_create(dentry, bdst);
++	err = PTR_ERR(opq_dentry);
++	if (IS_ERR(opq_dentry))
++		goto out;
++	dput(opq_dentry);
++	au_fset_cpdown(*flags, DIROPQ);
++
++out:
++	return err;
++}
++
++static int au_cpdown_dir_wh(struct dentry *dentry, struct dentry *h_parent,
++			    struct inode *dir, aufs_bindex_t bdst)
++{
++	int err;
++	struct path h_path;
++	struct au_branch *br;
++
++	br = au_sbr(dentry->d_sb, bdst);
++	h_path.dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
++	err = PTR_ERR(h_path.dentry);
++	if (IS_ERR(h_path.dentry))
++		goto out;
++
++	err = 0;
++	if (d_is_positive(h_path.dentry)) {
++		h_path.mnt = au_br_mnt(br);
++		err = au_wh_unlink_dentry(au_h_iptr(dir, bdst), &h_path,
++					  dentry);
++	}
++	dput(h_path.dentry);
++
++out:
++	return err;
++}
++
++static int au_cpdown_dir(struct dentry *dentry, aufs_bindex_t bdst,
++			 struct au_pin *pin,
++			 struct dentry *h_parent, void *arg)
++{
++	int err, rerr;
++	aufs_bindex_t bopq, btop;
++	struct path h_path;
++	struct dentry *parent;
++	struct inode *h_dir, *h_inode, *inode, *dir;
++	unsigned int *flags = arg;
++
++	btop = au_dbtop(dentry);
++	/* dentry is di-locked */
++	parent = dget_parent(dentry);
++	dir = d_inode(parent);
++	h_dir = d_inode(h_parent);
++	AuDebugOn(h_dir != au_h_iptr(dir, bdst));
++	IMustLock(h_dir);
++
++	err = au_lkup_neg(dentry, bdst, /*wh*/0);
++	if (unlikely(err < 0))
++		goto out;
++	h_path.dentry = au_h_dptr(dentry, bdst);
++	h_path.mnt = au_sbr_mnt(dentry->d_sb, bdst);
++	err = vfsub_sio_mkdir(au_h_iptr(dir, bdst), &h_path, 0755);
++	if (unlikely(err))
++		goto out_put;
++	au_fset_cpdown(*flags, MADE_DIR);
++
++	bopq = au_dbdiropq(dentry);
++	au_fclr_cpdown(*flags, WHED);
++	au_fclr_cpdown(*flags, DIROPQ);
++	if (au_dbwh(dentry) == bdst)
++		au_fset_cpdown(*flags, WHED);
++	if (!au_ftest_cpdown(*flags, PARENT_OPQ) && bopq <= bdst)
++		au_fset_cpdown(*flags, PARENT_OPQ);
++	h_inode = d_inode(h_path.dentry);
++	inode_lock_nested(h_inode, AuLsc_I_CHILD);
++	if (au_ftest_cpdown(*flags, WHED)) {
++		err = au_cpdown_dir_opq(dentry, bdst, flags);
++		if (unlikely(err)) {
++			inode_unlock(h_inode);
++			goto out_dir;
++		}
++	}
++
++	err = au_cpdown_attr(&h_path, au_h_dptr(dentry, btop));
++	inode_unlock(h_inode);
++	if (unlikely(err))
++		goto out_opq;
++
++	if (au_ftest_cpdown(*flags, WHED)) {
++		err = au_cpdown_dir_wh(dentry, h_parent, dir, bdst);
++		if (unlikely(err))
++			goto out_opq;
++	}
++
++	inode = d_inode(dentry);
++	if (au_ibbot(inode) < bdst)
++		au_set_ibbot(inode, bdst);
++	au_set_h_iptr(inode, bdst, au_igrab(h_inode),
++		      au_hi_flags(inode, /*isdir*/1));
++	au_fhsm_wrote(dentry->d_sb, bdst, /*force*/0);
++	goto out; /* success */
++
++	/* revert */
++out_opq:
++	if (au_ftest_cpdown(*flags, DIROPQ)) {
++		inode_lock_nested(h_inode, AuLsc_I_CHILD);
++		rerr = au_diropq_remove(dentry, bdst);
++		inode_unlock(h_inode);
++		if (unlikely(rerr)) {
++			AuIOErr("failed removing diropq for %pd b%d (%d)\n",
++				dentry, bdst, rerr);
++			err = -EIO;
++			goto out;
++		}
++	}
++out_dir:
++	if (au_ftest_cpdown(*flags, MADE_DIR)) {
++		rerr = vfsub_sio_rmdir(au_h_iptr(dir, bdst), &h_path);
++		if (unlikely(rerr)) {
++			AuIOErr("failed removing %pd b%d (%d)\n",
++				dentry, bdst, rerr);
++			err = -EIO;
++		}
++	}
++out_put:
++	au_set_h_dptr(dentry, bdst, NULL);
++	if (au_dbbot(dentry) == bdst)
++		au_update_dbbot(dentry);
++out:
++	dput(parent);
++	return err;
++}
++
++int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst)
++{
++	int err;
++	unsigned int flags;
++
++	flags = 0;
++	err = au_cp_dirs(dentry, bdst, au_cpdown_dir, &flags);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* policies for create */
++
++int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	int err, i, j, ndentry;
++	aufs_bindex_t bopq;
++	struct au_dcsub_pages dpages;
++	struct au_dpage *dpage;
++	struct dentry **dentries, *parent, *d;
++
++	err = au_dpages_init(&dpages, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	parent = dget_parent(dentry);
++	err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/0);
++	if (unlikely(err))
++		goto out_free;
++
++	err = bindex;
++	for (i = 0; i < dpages.ndpage; i++) {
++		dpage = dpages.dpages + i;
++		dentries = dpage->dentries;
++		ndentry = dpage->ndentry;
++		for (j = 0; j < ndentry; j++) {
++			d = dentries[j];
++			di_read_lock_parent2(d, !AuLock_IR);
++			bopq = au_dbdiropq(d);
++			di_read_unlock(d, !AuLock_IR);
++			if (bopq >= 0 && bopq < err)
++				err = bopq;
++		}
++	}
++
++out_free:
++	dput(parent);
++	au_dpages_free(&dpages);
++out:
++	return err;
++}
++
++static int au_wbr_bu(struct super_block *sb, aufs_bindex_t bindex)
++{
++	for (; bindex >= 0; bindex--)
++		if (!au_br_rdonly(au_sbr(sb, bindex)))
++			return bindex;
++	return -EROFS;
++}
++
++/* top down parent */
++static int au_wbr_create_tdp(struct dentry *dentry,
++			     unsigned int flags __maybe_unused)
++{
++	int err;
++	aufs_bindex_t btop, bindex;
++	struct super_block *sb;
++	struct dentry *parent, *h_parent;
++
++	sb = dentry->d_sb;
++	btop = au_dbtop(dentry);
++	err = btop;
++	if (!au_br_rdonly(au_sbr(sb, btop)))
++		goto out;
++
++	err = -EROFS;
++	parent = dget_parent(dentry);
++	for (bindex = au_dbtop(parent); bindex < btop; bindex++) {
++		h_parent = au_h_dptr(parent, bindex);
++		if (!h_parent || d_is_negative(h_parent))
++			continue;
++
++		if (!au_br_rdonly(au_sbr(sb, bindex))) {
++			err = bindex;
++			break;
++		}
++	}
++	dput(parent);
++
++	/* bottom up here */
++	if (unlikely(err < 0)) {
++		err = au_wbr_bu(sb, btop - 1);
++		if (err >= 0)
++			err = au_wbr_nonopq(dentry, err);
++	}
++
++out:
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* an exception for the policy other than tdp */
++static int au_wbr_create_exp(struct dentry *dentry)
++{
++	int err;
++	aufs_bindex_t bwh, bdiropq;
++	struct dentry *parent;
++
++	err = -1;
++	bwh = au_dbwh(dentry);
++	parent = dget_parent(dentry);
++	bdiropq = au_dbdiropq(parent);
++	if (bwh >= 0) {
++		if (bdiropq >= 0)
++			err = min(bdiropq, bwh);
++		else
++			err = bwh;
++		AuDbg("%d\n", err);
++	} else if (bdiropq >= 0) {
++		err = bdiropq;
++		AuDbg("%d\n", err);
++	}
++	dput(parent);
++
++	if (err >= 0)
++		err = au_wbr_nonopq(dentry, err);
++
++	if (err >= 0 && au_br_rdonly(au_sbr(dentry->d_sb, err)))
++		err = -1;
++
++	AuDbg("%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* round robin */
++static int au_wbr_create_init_rr(struct super_block *sb)
++{
++	int err;
++
++	err = au_wbr_bu(sb, au_sbbot(sb));
++	atomic_set(&au_sbi(sb)->si_wbr_rr_next, -err); /* less important */
++	/* smp_mb(); */
++
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++static int au_wbr_create_rr(struct dentry *dentry, unsigned int flags)
++{
++	int err, nbr;
++	unsigned int u;
++	aufs_bindex_t bindex, bbot;
++	struct super_block *sb;
++	atomic_t *next;
++
++	err = au_wbr_create_exp(dentry);
++	if (err >= 0)
++		goto out;
++
++	sb = dentry->d_sb;
++	next = &au_sbi(sb)->si_wbr_rr_next;
++	bbot = au_sbbot(sb);
++	nbr = bbot + 1;
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		if (!au_ftest_wbr(flags, DIR)) {
++			err = atomic_dec_return(next) + 1;
++			/* modulo for 0 is meaningless */
++			if (unlikely(!err))
++				err = atomic_dec_return(next) + 1;
++		} else
++			err = atomic_read(next);
++		AuDbg("%d\n", err);
++		u = err;
++		err = u % nbr;
++		AuDbg("%d\n", err);
++		if (!au_br_rdonly(au_sbr(sb, err)))
++			break;
++		err = -EROFS;
++	}
++
++	if (err >= 0)
++		err = au_wbr_nonopq(dentry, err);
++
++out:
++	AuDbg("%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* most free space */
++static void au_mfs(struct dentry *dentry, struct dentry *parent)
++{
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_wbr_mfs *mfs;
++	struct dentry *h_parent;
++	aufs_bindex_t bindex, bbot;
++	int err;
++	unsigned long long b, bavail;
++	struct path h_path;
++	/* reduce the stack usage */
++	struct kstatfs *st;
++
++	st = kmalloc(sizeof(*st), GFP_NOFS);
++	if (unlikely(!st)) {
++		AuWarn1("failed updating mfs(%d), ignored\n", -ENOMEM);
++		return;
++	}
++
++	bavail = 0;
++	sb = dentry->d_sb;
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	MtxMustLock(&mfs->mfs_lock);
++	mfs->mfs_bindex = -EROFS;
++	mfs->mfsrr_bytes = 0;
++	if (!parent) {
++		bindex = 0;
++		bbot = au_sbbot(sb);
++	} else {
++		bindex = au_dbtop(parent);
++		bbot = au_dbtaildir(parent);
++	}
++
++	for (; bindex <= bbot; bindex++) {
++		if (parent) {
++			h_parent = au_h_dptr(parent, bindex);
++			if (!h_parent || d_is_negative(h_parent))
++				continue;
++		}
++		br = au_sbr(sb, bindex);
++		if (au_br_rdonly(br))
++			continue;
++
++		/* sb->s_root for NFS is unreliable */
++		h_path.mnt = au_br_mnt(br);
++		h_path.dentry = h_path.mnt->mnt_root;
++		err = vfs_statfs(&h_path, st);
++		if (unlikely(err)) {
++			AuWarn1("failed statfs, b%d, %d\n", bindex, err);
++			continue;
++		}
++
++		/* when the available size is equal, select the lower one */
++		BUILD_BUG_ON(sizeof(b) < sizeof(st->f_bavail)
++			     || sizeof(b) < sizeof(st->f_bsize));
++		b = st->f_bavail * st->f_bsize;
++		br->br_wbr->wbr_bytes = b;
++		if (b >= bavail) {
++			bavail = b;
++			mfs->mfs_bindex = bindex;
++			mfs->mfs_jiffy = jiffies;
++		}
++	}
++
++	mfs->mfsrr_bytes = bavail;
++	AuDbg("b%d\n", mfs->mfs_bindex);
++	au_kfree_rcu(st);
++}
++
++static int au_wbr_create_mfs(struct dentry *dentry, unsigned int flags)
++{
++	int err;
++	struct dentry *parent;
++	struct super_block *sb;
++	struct au_wbr_mfs *mfs;
++
++	err = au_wbr_create_exp(dentry);
++	if (err >= 0)
++		goto out;
++
++	sb = dentry->d_sb;
++	parent = NULL;
++	if (au_ftest_wbr(flags, PARENT))
++		parent = dget_parent(dentry);
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	mutex_lock(&mfs->mfs_lock);
++	if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
++	    || mfs->mfs_bindex < 0
++	    || au_br_rdonly(au_sbr(sb, mfs->mfs_bindex)))
++		au_mfs(dentry, parent);
++	mutex_unlock(&mfs->mfs_lock);
++	err = mfs->mfs_bindex;
++	dput(parent);
++
++	if (err >= 0)
++		err = au_wbr_nonopq(dentry, err);
++
++out:
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++static int au_wbr_create_init_mfs(struct super_block *sb)
++{
++	struct au_wbr_mfs *mfs;
++
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	mutex_init(&mfs->mfs_lock);
++	mfs->mfs_jiffy = 0;
++	mfs->mfs_bindex = -EROFS;
++
++	return 0;
++}
++
++static int au_wbr_create_fin_mfs(struct super_block *sb __maybe_unused)
++{
++	mutex_destroy(&au_sbi(sb)->si_wbr_mfs.mfs_lock);
++	return 0;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* top down regardless parent, and then mfs */
++static int au_wbr_create_tdmfs(struct dentry *dentry,
++			       unsigned int flags __maybe_unused)
++{
++	int err;
++	aufs_bindex_t bwh, btail, bindex, bfound, bmfs;
++	unsigned long long watermark;
++	struct super_block *sb;
++	struct au_wbr_mfs *mfs;
++	struct au_branch *br;
++	struct dentry *parent;
++
++	sb = dentry->d_sb;
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	mutex_lock(&mfs->mfs_lock);
++	if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
++	    || mfs->mfs_bindex < 0)
++		au_mfs(dentry, /*parent*/NULL);
++	watermark = mfs->mfsrr_watermark;
++	bmfs = mfs->mfs_bindex;
++	mutex_unlock(&mfs->mfs_lock);
++
++	/* another style of au_wbr_create_exp() */
++	bwh = au_dbwh(dentry);
++	parent = dget_parent(dentry);
++	btail = au_dbtaildir(parent);
++	if (bwh >= 0 && bwh < btail)
++		btail = bwh;
++
++	err = au_wbr_nonopq(dentry, btail);
++	if (unlikely(err < 0))
++		goto out;
++	btail = err;
++	bfound = -1;
++	for (bindex = 0; bindex <= btail; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_rdonly(br))
++			continue;
++		if (br->br_wbr->wbr_bytes > watermark) {
++			bfound = bindex;
++			break;
++		}
++	}
++	err = bfound;
++	if (err < 0)
++		err = bmfs;
++
++out:
++	dput(parent);
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* most free space and then round robin */
++static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags)
++{
++	int err;
++	struct au_wbr_mfs *mfs;
++
++	err = au_wbr_create_mfs(dentry, flags);
++	if (err >= 0) {
++		mfs = &au_sbi(dentry->d_sb)->si_wbr_mfs;
++		mutex_lock(&mfs->mfs_lock);
++		if (mfs->mfsrr_bytes < mfs->mfsrr_watermark)
++			err = au_wbr_create_rr(dentry, flags);
++		mutex_unlock(&mfs->mfs_lock);
++	}
++
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++static int au_wbr_create_init_mfsrr(struct super_block *sb)
++{
++	int err;
++
++	au_wbr_create_init_mfs(sb); /* ignore */
++	err = au_wbr_create_init_rr(sb);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* top down parent and most free space */
++static int au_wbr_create_pmfs(struct dentry *dentry, unsigned int flags)
++{
++	int err, e2;
++	unsigned long long b;
++	aufs_bindex_t bindex, btop, bbot;
++	struct super_block *sb;
++	struct dentry *parent, *h_parent;
++	struct au_branch *br;
++
++	err = au_wbr_create_tdp(dentry, flags);
++	if (unlikely(err < 0))
++		goto out;
++	parent = dget_parent(dentry);
++	btop = au_dbtop(parent);
++	bbot = au_dbtaildir(parent);
++	if (btop == bbot)
++		goto out_parent; /* success */
++
++	e2 = au_wbr_create_mfs(dentry, flags);
++	if (e2 < 0)
++		goto out_parent; /* success */
++
++	/* when the available size is equal, select upper one */
++	sb = dentry->d_sb;
++	br = au_sbr(sb, err);
++	b = br->br_wbr->wbr_bytes;
++	AuDbg("b%d, %llu\n", err, b);
++
++	for (bindex = btop; bindex <= bbot; bindex++) {
++		h_parent = au_h_dptr(parent, bindex);
++		if (!h_parent || d_is_negative(h_parent))
++			continue;
++
++		br = au_sbr(sb, bindex);
++		if (!au_br_rdonly(br) && br->br_wbr->wbr_bytes > b) {
++			b = br->br_wbr->wbr_bytes;
++			err = bindex;
++			AuDbg("b%d, %llu\n", err, b);
++		}
++	}
++
++	if (err >= 0)
++		err = au_wbr_nonopq(dentry, err);
++
++out_parent:
++	dput(parent);
++out:
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * - top down parent
++ * - most free space with parent
++ * - most free space round-robin regardless parent
++ */
++static int au_wbr_create_pmfsrr(struct dentry *dentry, unsigned int flags)
++{
++	int err;
++	unsigned long long watermark;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_wbr_mfs *mfs;
++
++	err = au_wbr_create_pmfs(dentry, flags | AuWbr_PARENT);
++	if (unlikely(err < 0))
++		goto out;
++
++	sb = dentry->d_sb;
++	br = au_sbr(sb, err);
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	mutex_lock(&mfs->mfs_lock);
++	watermark = mfs->mfsrr_watermark;
++	mutex_unlock(&mfs->mfs_lock);
++	if (br->br_wbr->wbr_bytes < watermark)
++		/* regardless the parent dir */
++		err = au_wbr_create_mfsrr(dentry, flags);
++
++out:
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* policies for copyup */
++
++/* top down parent */
++static int au_wbr_copyup_tdp(struct dentry *dentry)
++{
++	return au_wbr_create_tdp(dentry, /*flags, anything is ok*/0);
++}
++
++/* bottom up parent */
++static int au_wbr_copyup_bup(struct dentry *dentry)
++{
++	int err;
++	aufs_bindex_t bindex, btop;
++	struct dentry *parent, *h_parent;
++	struct super_block *sb;
++
++	err = -EROFS;
++	sb = dentry->d_sb;
++	parent = dget_parent(dentry);
++	btop = au_dbtop(parent);
++	for (bindex = au_dbtop(dentry); bindex >= btop; bindex--) {
++		h_parent = au_h_dptr(parent, bindex);
++		if (!h_parent || d_is_negative(h_parent))
++			continue;
++
++		if (!au_br_rdonly(au_sbr(sb, bindex))) {
++			err = bindex;
++			break;
++		}
++	}
++	dput(parent);
++
++	/* bottom up here */
++	if (unlikely(err < 0))
++		err = au_wbr_bu(sb, btop - 1);
++
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* bottom up */
++int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop)
++{
++	int err;
++
++	err = au_wbr_bu(dentry->d_sb, btop);
++	AuDbg("b%d\n", err);
++	if (err > btop)
++		err = au_wbr_nonopq(dentry, err);
++
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++static int au_wbr_copyup_bu(struct dentry *dentry)
++{
++	int err;
++	aufs_bindex_t btop;
++
++	btop = au_dbtop(dentry);
++	err = au_wbr_do_copyup_bu(dentry, btop);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_wbr_copyup_operations au_wbr_copyup_ops[] = {
++	[AuWbrCopyup_TDP] = {
++		.copyup	= au_wbr_copyup_tdp
++	},
++	[AuWbrCopyup_BUP] = {
++		.copyup	= au_wbr_copyup_bup
++	},
++	[AuWbrCopyup_BU] = {
++		.copyup	= au_wbr_copyup_bu
++	}
++};
++
++struct au_wbr_create_operations au_wbr_create_ops[] = {
++	[AuWbrCreate_TDP] = {
++		.create	= au_wbr_create_tdp
++	},
++	[AuWbrCreate_RR] = {
++		.create	= au_wbr_create_rr,
++		.init	= au_wbr_create_init_rr
++	},
++	[AuWbrCreate_MFS] = {
++		.create	= au_wbr_create_mfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_MFSV] = {
++		.create	= au_wbr_create_mfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_MFSRR] = {
++		.create	= au_wbr_create_mfsrr,
++		.init	= au_wbr_create_init_mfsrr,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_MFSRRV] = {
++		.create	= au_wbr_create_mfsrr,
++		.init	= au_wbr_create_init_mfsrr,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_TDMFS] = {
++		.create	= au_wbr_create_tdmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_TDMFSV] = {
++		.create	= au_wbr_create_tdmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_PMFS] = {
++		.create	= au_wbr_create_pmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_PMFSV] = {
++		.create	= au_wbr_create_pmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_PMFSRR] = {
++		.create	= au_wbr_create_pmfsrr,
++		.init	= au_wbr_create_init_mfsrr,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_PMFSRRV] = {
++		.create	= au_wbr_create_pmfsrr,
++		.init	= au_wbr_create_init_mfsrr,
++		.fin	= au_wbr_create_fin_mfs
++	}
++};
+diff -Nurp linux-5.4/fs/aufs/vdir.c linux-5.4-aufs/fs/aufs/vdir.c
+--- linux-5.4/fs/aufs/vdir.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/vdir.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,883 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * virtual or vertical directory
++ */
++
++#include <linux/iversion.h>
++#include "aufs.h"
++
++static unsigned int calc_size(int nlen)
++{
++	return ALIGN(sizeof(struct au_vdir_de) + nlen, sizeof(ino_t));
++}
++
++static int set_deblk_end(union au_vdir_deblk_p *p,
++			 union au_vdir_deblk_p *deblk_end)
++{
++	if (calc_size(0) <= deblk_end->deblk - p->deblk) {
++		p->de->de_str.len = 0;
++		/* smp_mb(); */
++		return 0;
++	}
++	return -1; /* error */
++}
++
++/* returns true or false */
++static int is_deblk_end(union au_vdir_deblk_p *p,
++			union au_vdir_deblk_p *deblk_end)
++{
++	if (calc_size(0) <= deblk_end->deblk - p->deblk)
++		return !p->de->de_str.len;
++	return 1;
++}
++
++static unsigned char *last_deblk(struct au_vdir *vdir)
++{
++	return vdir->vd_deblk[vdir->vd_nblk - 1];
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* estimate the appropriate size for name hash table */
++unsigned int au_rdhash_est(loff_t sz)
++{
++	unsigned int n;
++
++	n = UINT_MAX;
++	sz >>= 10;
++	if (sz < n)
++		n = sz;
++	if (sz < AUFS_RDHASH_DEF)
++		n = AUFS_RDHASH_DEF;
++	/* pr_info("n %u\n", n); */
++	return n;
++}
++
++/*
++ * the allocated memory has to be freed by
++ * au_nhash_wh_free() or au_nhash_de_free().
++ */
++int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp)
++{
++	struct hlist_head *head;
++	unsigned int u;
++	size_t sz;
++
++	sz = sizeof(*nhash->nh_head) * num_hash;
++	head = kmalloc(sz, gfp);
++	if (head) {
++		nhash->nh_num = num_hash;
++		nhash->nh_head = head;
++		for (u = 0; u < num_hash; u++)
++			INIT_HLIST_HEAD(head++);
++		return 0; /* success */
++	}
++
++	return -ENOMEM;
++}
++
++static void nhash_count(struct hlist_head *head)
++{
++#if 0
++	unsigned long n;
++	struct hlist_node *pos;
++
++	n = 0;
++	hlist_for_each(pos, head)
++		n++;
++	pr_info("%lu\n", n);
++#endif
++}
++
++static void au_nhash_wh_do_free(struct hlist_head *head)
++{
++	struct au_vdir_wh *pos;
++	struct hlist_node *node;
++
++	hlist_for_each_entry_safe(pos, node, head, wh_hash)
++		au_kfree_rcu(pos);
++}
++
++static void au_nhash_de_do_free(struct hlist_head *head)
++{
++	struct au_vdir_dehstr *pos;
++	struct hlist_node *node;
++
++	hlist_for_each_entry_safe(pos, node, head, hash)
++		au_cache_free_vdir_dehstr(pos);
++}
++
++static void au_nhash_do_free(struct au_nhash *nhash,
++			     void (*free)(struct hlist_head *head))
++{
++	unsigned int n;
++	struct hlist_head *head;
++
++	n = nhash->nh_num;
++	if (!n)
++		return;
++
++	head = nhash->nh_head;
++	while (n-- > 0) {
++		nhash_count(head);
++		free(head++);
++	}
++	au_kfree_try_rcu(nhash->nh_head);
++}
++
++void au_nhash_wh_free(struct au_nhash *whlist)
++{
++	au_nhash_do_free(whlist, au_nhash_wh_do_free);
++}
++
++static void au_nhash_de_free(struct au_nhash *delist)
++{
++	au_nhash_do_free(delist, au_nhash_de_do_free);
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
++			    int limit)
++{
++	int num;
++	unsigned int u, n;
++	struct hlist_head *head;
++	struct au_vdir_wh *pos;
++
++	num = 0;
++	n = whlist->nh_num;
++	head = whlist->nh_head;
++	for (u = 0; u < n; u++, head++)
++		hlist_for_each_entry(pos, head, wh_hash)
++			if (pos->wh_bindex == btgt && ++num > limit)
++				return 1;
++	return 0;
++}
++
++static struct hlist_head *au_name_hash(struct au_nhash *nhash,
++				       unsigned char *name,
++				       unsigned int len)
++{
++	unsigned int v;
++	/* const unsigned int magic_bit = 12; */
++
++	AuDebugOn(!nhash->nh_num || !nhash->nh_head);
++
++	v = 0;
++	if (len > 8)
++		len = 8;
++	while (len--)
++		v += *name++;
++	/* v = hash_long(v, magic_bit); */
++	v %= nhash->nh_num;
++	return nhash->nh_head + v;
++}
++
++static int au_nhash_test_name(struct au_vdir_destr *str, const char *name,
++			      int nlen)
++{
++	return str->len == nlen && !memcmp(str->name, name, nlen);
++}
++
++/* returns found or not */
++int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen)
++{
++	struct hlist_head *head;
++	struct au_vdir_wh *pos;
++	struct au_vdir_destr *str;
++
++	head = au_name_hash(whlist, name, nlen);
++	hlist_for_each_entry(pos, head, wh_hash) {
++		str = &pos->wh_str;
++		AuDbg("%.*s\n", str->len, str->name);
++		if (au_nhash_test_name(str, name, nlen))
++			return 1;
++	}
++	return 0;
++}
++
++/* returns found(true) or not */
++static int test_known(struct au_nhash *delist, char *name, int nlen)
++{
++	struct hlist_head *head;
++	struct au_vdir_dehstr *pos;
++	struct au_vdir_destr *str;
++
++	head = au_name_hash(delist, name, nlen);
++	hlist_for_each_entry(pos, head, hash) {
++		str = pos->str;
++		AuDbg("%.*s\n", str->len, str->name);
++		if (au_nhash_test_name(str, name, nlen))
++			return 1;
++	}
++	return 0;
++}
++
++static void au_shwh_init_wh(struct au_vdir_wh *wh, ino_t ino,
++			    unsigned char d_type)
++{
++#ifdef CONFIG_AUFS_SHWH
++	wh->wh_ino = ino;
++	wh->wh_type = d_type;
++#endif
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
++		       unsigned int d_type, aufs_bindex_t bindex,
++		       unsigned char shwh)
++{
++	int err;
++	struct au_vdir_destr *str;
++	struct au_vdir_wh *wh;
++
++	AuDbg("%.*s\n", nlen, name);
++	AuDebugOn(!whlist->nh_num || !whlist->nh_head);
++
++	err = -ENOMEM;
++	wh = kmalloc(sizeof(*wh) + nlen, GFP_NOFS);
++	if (unlikely(!wh))
++		goto out;
++
++	err = 0;
++	wh->wh_bindex = bindex;
++	if (shwh)
++		au_shwh_init_wh(wh, ino, d_type);
++	str = &wh->wh_str;
++	str->len = nlen;
++	memcpy(str->name, name, nlen);
++	hlist_add_head(&wh->wh_hash, au_name_hash(whlist, name, nlen));
++	/* smp_mb(); */
++
++out:
++	return err;
++}
++
++static int append_deblk(struct au_vdir *vdir)
++{
++	int err;
++	unsigned long ul;
++	const unsigned int deblk_sz = vdir->vd_deblk_sz;
++	union au_vdir_deblk_p p, deblk_end;
++	unsigned char **o;
++
++	err = -ENOMEM;
++	o = au_krealloc(vdir->vd_deblk, sizeof(*o) * (vdir->vd_nblk + 1),
++			GFP_NOFS, /*may_shrink*/0);
++	if (unlikely(!o))
++		goto out;
++
++	vdir->vd_deblk = o;
++	p.deblk = kmalloc(deblk_sz, GFP_NOFS);
++	if (p.deblk) {
++		ul = vdir->vd_nblk++;
++		vdir->vd_deblk[ul] = p.deblk;
++		vdir->vd_last.ul = ul;
++		vdir->vd_last.p.deblk = p.deblk;
++		deblk_end.deblk = p.deblk + deblk_sz;
++		err = set_deblk_end(&p, &deblk_end);
++	}
++
++out:
++	return err;
++}
++
++static int append_de(struct au_vdir *vdir, char *name, int nlen, ino_t ino,
++		     unsigned int d_type, struct au_nhash *delist)
++{
++	int err;
++	unsigned int sz;
++	const unsigned int deblk_sz = vdir->vd_deblk_sz;
++	union au_vdir_deblk_p p, *room, deblk_end;
++	struct au_vdir_dehstr *dehstr;
++
++	p.deblk = last_deblk(vdir);
++	deblk_end.deblk = p.deblk + deblk_sz;
++	room = &vdir->vd_last.p;
++	AuDebugOn(room->deblk < p.deblk || deblk_end.deblk <= room->deblk
++		  || !is_deblk_end(room, &deblk_end));
++
++	sz = calc_size(nlen);
++	if (unlikely(sz > deblk_end.deblk - room->deblk)) {
++		err = append_deblk(vdir);
++		if (unlikely(err))
++			goto out;
++
++		p.deblk = last_deblk(vdir);
++		deblk_end.deblk = p.deblk + deblk_sz;
++		/* smp_mb(); */
++		AuDebugOn(room->deblk != p.deblk);
++	}
++
++	err = -ENOMEM;
++	dehstr = au_cache_alloc_vdir_dehstr();
++	if (unlikely(!dehstr))
++		goto out;
++
++	dehstr->str = &room->de->de_str;
++	hlist_add_head(&dehstr->hash, au_name_hash(delist, name, nlen));
++	room->de->de_ino = ino;
++	room->de->de_type = d_type;
++	room->de->de_str.len = nlen;
++	memcpy(room->de->de_str.name, name, nlen);
++
++	err = 0;
++	room->deblk += sz;
++	if (unlikely(set_deblk_end(room, &deblk_end)))
++		err = append_deblk(vdir);
++	/* smp_mb(); */
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_vdir_free(struct au_vdir *vdir)
++{
++	unsigned char **deblk;
++
++	deblk = vdir->vd_deblk;
++	while (vdir->vd_nblk--)
++		au_kfree_try_rcu(*deblk++);
++	au_kfree_try_rcu(vdir->vd_deblk);
++	au_cache_free_vdir(vdir);
++}
++
++static struct au_vdir *alloc_vdir(struct file *file)
++{
++	struct au_vdir *vdir;
++	struct super_block *sb;
++	int err;
++
++	sb = file->f_path.dentry->d_sb;
++	SiMustAnyLock(sb);
++
++	err = -ENOMEM;
++	vdir = au_cache_alloc_vdir();
++	if (unlikely(!vdir))
++		goto out;
++
++	vdir->vd_deblk = kzalloc(sizeof(*vdir->vd_deblk), GFP_NOFS);
++	if (unlikely(!vdir->vd_deblk))
++		goto out_free;
++
++	vdir->vd_deblk_sz = au_sbi(sb)->si_rdblk;
++	if (!vdir->vd_deblk_sz) {
++		/* estimate the appropriate size for deblk */
++		vdir->vd_deblk_sz = au_dir_size(file, /*dentry*/NULL);
++		/* pr_info("vd_deblk_sz %u\n", vdir->vd_deblk_sz); */
++	}
++	vdir->vd_nblk = 0;
++	vdir->vd_version = 0;
++	vdir->vd_jiffy = 0;
++	err = append_deblk(vdir);
++	if (!err)
++		return vdir; /* success */
++
++	au_kfree_try_rcu(vdir->vd_deblk);
++
++out_free:
++	au_cache_free_vdir(vdir);
++out:
++	vdir = ERR_PTR(err);
++	return vdir;
++}
++
++static int reinit_vdir(struct au_vdir *vdir)
++{
++	int err;
++	union au_vdir_deblk_p p, deblk_end;
++
++	while (vdir->vd_nblk > 1) {
++		au_kfree_try_rcu(vdir->vd_deblk[vdir->vd_nblk - 1]);
++		/* vdir->vd_deblk[vdir->vd_nblk - 1] = NULL; */
++		vdir->vd_nblk--;
++	}
++	p.deblk = vdir->vd_deblk[0];
++	deblk_end.deblk = p.deblk + vdir->vd_deblk_sz;
++	err = set_deblk_end(&p, &deblk_end);
++	/* keep vd_dblk_sz */
++	vdir->vd_last.ul = 0;
++	vdir->vd_last.p.deblk = vdir->vd_deblk[0];
++	vdir->vd_version = 0;
++	vdir->vd_jiffy = 0;
++	/* smp_mb(); */
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++#define AuFillVdir_CALLED	1
++#define AuFillVdir_WHABLE	(1 << 1)
++#define AuFillVdir_SHWH		(1 << 2)
++#define au_ftest_fillvdir(flags, name)	((flags) & AuFillVdir_##name)
++#define au_fset_fillvdir(flags, name) \
++	do { (flags) |= AuFillVdir_##name; } while (0)
++#define au_fclr_fillvdir(flags, name) \
++	do { (flags) &= ~AuFillVdir_##name; } while (0)
++
++#ifndef CONFIG_AUFS_SHWH
++#undef AuFillVdir_SHWH
++#define AuFillVdir_SHWH		0
++#endif
++
++struct fillvdir_arg {
++	struct dir_context	ctx;
++	struct file		*file;
++	struct au_vdir		*vdir;
++	struct au_nhash		delist;
++	struct au_nhash		whlist;
++	aufs_bindex_t		bindex;
++	unsigned int		flags;
++	int			err;
++};
++
++static int fillvdir(struct dir_context *ctx, const char *__name, int nlen,
++		    loff_t offset __maybe_unused, u64 h_ino,
++		    unsigned int d_type)
++{
++	struct fillvdir_arg *arg = container_of(ctx, struct fillvdir_arg, ctx);
++	char *name = (void *)__name;
++	struct super_block *sb;
++	ino_t ino;
++	const unsigned char shwh = !!au_ftest_fillvdir(arg->flags, SHWH);
++
++	arg->err = 0;
++	sb = arg->file->f_path.dentry->d_sb;
++	au_fset_fillvdir(arg->flags, CALLED);
++	/* smp_mb(); */
++	if (nlen <= AUFS_WH_PFX_LEN
++	    || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
++		if (test_known(&arg->delist, name, nlen)
++		    || au_nhash_test_known_wh(&arg->whlist, name, nlen))
++			goto out; /* already exists or whiteouted */
++
++		arg->err = au_ino(sb, arg->bindex, h_ino, d_type, &ino);
++		if (!arg->err) {
++			if (unlikely(nlen > AUFS_MAX_NAMELEN))
++				d_type = DT_UNKNOWN;
++			arg->err = append_de(arg->vdir, name, nlen, ino,
++					     d_type, &arg->delist);
++		}
++	} else if (au_ftest_fillvdir(arg->flags, WHABLE)) {
++		name += AUFS_WH_PFX_LEN;
++		nlen -= AUFS_WH_PFX_LEN;
++		if (au_nhash_test_known_wh(&arg->whlist, name, nlen))
++			goto out; /* already whiteouted */
++
++		ino = 0; /* just to suppress a warning */
++		if (shwh)
++			arg->err = au_wh_ino(sb, arg->bindex, h_ino, d_type,
++					     &ino);
++		if (!arg->err) {
++			if (nlen <= AUFS_MAX_NAMELEN + AUFS_WH_PFX_LEN)
++				d_type = DT_UNKNOWN;
++			arg->err = au_nhash_append_wh
++				(&arg->whlist, name, nlen, ino, d_type,
++				 arg->bindex, shwh);
++		}
++	}
++
++out:
++	if (!arg->err)
++		arg->vdir->vd_jiffy = jiffies;
++	/* smp_mb(); */
++	AuTraceErr(arg->err);
++	return arg->err;
++}
++
++static int au_handle_shwh(struct super_block *sb, struct au_vdir *vdir,
++			  struct au_nhash *whlist, struct au_nhash *delist)
++{
++#ifdef CONFIG_AUFS_SHWH
++	int err;
++	unsigned int nh, u;
++	struct hlist_head *head;
++	struct au_vdir_wh *pos;
++	struct hlist_node *n;
++	char *p, *o;
++	struct au_vdir_destr *destr;
++
++	AuDebugOn(!au_opt_test(au_mntflags(sb), SHWH));
++
++	err = -ENOMEM;
++	o = p = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!p))
++		goto out;
++
++	err = 0;
++	nh = whlist->nh_num;
++	memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
++	p += AUFS_WH_PFX_LEN;
++	for (u = 0; u < nh; u++) {
++		head = whlist->nh_head + u;
++		hlist_for_each_entry_safe(pos, n, head, wh_hash) {
++			destr = &pos->wh_str;
++			memcpy(p, destr->name, destr->len);
++			err = append_de(vdir, o, destr->len + AUFS_WH_PFX_LEN,
++					pos->wh_ino, pos->wh_type, delist);
++			if (unlikely(err))
++				break;
++		}
++	}
++
++	free_page((unsigned long)o);
++
++out:
++	AuTraceErr(err);
++	return err;
++#else
++	return 0;
++#endif
++}
++
++static int au_do_read_vdir(struct fillvdir_arg *arg)
++{
++	int err;
++	unsigned int rdhash;
++	loff_t offset;
++	aufs_bindex_t bbot, bindex, btop;
++	unsigned char shwh;
++	struct file *hf, *file;
++	struct super_block *sb;
++
++	file = arg->file;
++	sb = file->f_path.dentry->d_sb;
++	SiMustAnyLock(sb);
++
++	rdhash = au_sbi(sb)->si_rdhash;
++	if (!rdhash)
++		rdhash = au_rdhash_est(au_dir_size(file, /*dentry*/NULL));
++	err = au_nhash_alloc(&arg->delist, rdhash, GFP_NOFS);
++	if (unlikely(err))
++		goto out;
++	err = au_nhash_alloc(&arg->whlist, rdhash, GFP_NOFS);
++	if (unlikely(err))
++		goto out_delist;
++
++	err = 0;
++	arg->flags = 0;
++	shwh = 0;
++	if (au_opt_test(au_mntflags(sb), SHWH)) {
++		shwh = 1;
++		au_fset_fillvdir(arg->flags, SHWH);
++	}
++	btop = au_fbtop(file);
++	bbot = au_fbbot_dir(file);
++	for (bindex = btop; !err && bindex <= bbot; bindex++) {
++		hf = au_hf_dir(file, bindex);
++		if (!hf)
++			continue;
++
++		offset = vfsub_llseek(hf, 0, SEEK_SET);
++		err = offset;
++		if (unlikely(offset))
++			break;
++
++		arg->bindex = bindex;
++		au_fclr_fillvdir(arg->flags, WHABLE);
++		if (shwh
++		    || (bindex != bbot
++			&& au_br_whable(au_sbr_perm(sb, bindex))))
++			au_fset_fillvdir(arg->flags, WHABLE);
++		do {
++			arg->err = 0;
++			au_fclr_fillvdir(arg->flags, CALLED);
++			/* smp_mb(); */
++			err = vfsub_iterate_dir(hf, &arg->ctx);
++			if (err >= 0)
++				err = arg->err;
++		} while (!err && au_ftest_fillvdir(arg->flags, CALLED));
++
++		/*
++		 * dir_relax() may be good for concurrency, but aufs should not
++		 * use it since it will cause a lockdep problem.
++		 */
++	}
++
++	if (!err && shwh)
++		err = au_handle_shwh(sb, arg->vdir, &arg->whlist, &arg->delist);
++
++	au_nhash_wh_free(&arg->whlist);
++
++out_delist:
++	au_nhash_de_free(&arg->delist);
++out:
++	return err;
++}
++
++static int read_vdir(struct file *file, int may_read)
++{
++	int err;
++	unsigned long expire;
++	unsigned char do_read;
++	struct fillvdir_arg arg = {
++		.ctx = {
++			.actor = fillvdir
++		}
++	};
++	struct inode *inode;
++	struct au_vdir *vdir, *allocated;
++
++	err = 0;
++	inode = file_inode(file);
++	IMustLock(inode);
++	IiMustWriteLock(inode);
++	SiMustAnyLock(inode->i_sb);
++
++	allocated = NULL;
++	do_read = 0;
++	expire = au_sbi(inode->i_sb)->si_rdcache;
++	vdir = au_ivdir(inode);
++	if (!vdir) {
++		do_read = 1;
++		vdir = alloc_vdir(file);
++		err = PTR_ERR(vdir);
++		if (IS_ERR(vdir))
++			goto out;
++		err = 0;
++		allocated = vdir;
++	} else if (may_read
++		   && (!inode_eq_iversion(inode, vdir->vd_version)
++		       || time_after(jiffies, vdir->vd_jiffy + expire))) {
++		do_read = 1;
++		err = reinit_vdir(vdir);
++		if (unlikely(err))
++			goto out;
++	}
++
++	if (!do_read)
++		return 0; /* success */
++
++	arg.file = file;
++	arg.vdir = vdir;
++	err = au_do_read_vdir(&arg);
++	if (!err) {
++		/* file->f_pos = 0; */ /* todo: ctx->pos? */
++		vdir->vd_version = inode_query_iversion(inode);
++		vdir->vd_last.ul = 0;
++		vdir->vd_last.p.deblk = vdir->vd_deblk[0];
++		if (allocated)
++			au_set_ivdir(inode, allocated);
++	} else if (allocated)
++		au_vdir_free(allocated);
++
++out:
++	return err;
++}
++
++static int copy_vdir(struct au_vdir *tgt, struct au_vdir *src)
++{
++	int err, rerr;
++	unsigned long ul, n;
++	const unsigned int deblk_sz = src->vd_deblk_sz;
++
++	AuDebugOn(tgt->vd_nblk != 1);
++
++	err = -ENOMEM;
++	if (tgt->vd_nblk < src->vd_nblk) {
++		unsigned char **p;
++
++		p = au_krealloc(tgt->vd_deblk, sizeof(*p) * src->vd_nblk,
++				GFP_NOFS, /*may_shrink*/0);
++		if (unlikely(!p))
++			goto out;
++		tgt->vd_deblk = p;
++	}
++
++	if (tgt->vd_deblk_sz != deblk_sz) {
++		unsigned char *p;
++
++		tgt->vd_deblk_sz = deblk_sz;
++		p = au_krealloc(tgt->vd_deblk[0], deblk_sz, GFP_NOFS,
++				/*may_shrink*/1);
++		if (unlikely(!p))
++			goto out;
++		tgt->vd_deblk[0] = p;
++	}
++	memcpy(tgt->vd_deblk[0], src->vd_deblk[0], deblk_sz);
++	tgt->vd_version = src->vd_version;
++	tgt->vd_jiffy = src->vd_jiffy;
++
++	n = src->vd_nblk;
++	for (ul = 1; ul < n; ul++) {
++		tgt->vd_deblk[ul] = kmemdup(src->vd_deblk[ul], deblk_sz,
++					    GFP_NOFS);
++		if (unlikely(!tgt->vd_deblk[ul]))
++			goto out;
++		tgt->vd_nblk++;
++	}
++	tgt->vd_nblk = n;
++	tgt->vd_last.ul = tgt->vd_last.ul;
++	tgt->vd_last.p.deblk = tgt->vd_deblk[tgt->vd_last.ul];
++	tgt->vd_last.p.deblk += src->vd_last.p.deblk
++		- src->vd_deblk[src->vd_last.ul];
++	/* smp_mb(); */
++	return 0; /* success */
++
++out:
++	rerr = reinit_vdir(tgt);
++	BUG_ON(rerr);
++	return err;
++}
++
++int au_vdir_init(struct file *file)
++{
++	int err;
++	struct inode *inode;
++	struct au_vdir *vdir_cache, *allocated;
++
++	/* test file->f_pos here instead of ctx->pos */
++	err = read_vdir(file, !file->f_pos);
++	if (unlikely(err))
++		goto out;
++
++	allocated = NULL;
++	vdir_cache = au_fvdir_cache(file);
++	if (!vdir_cache) {
++		vdir_cache = alloc_vdir(file);
++		err = PTR_ERR(vdir_cache);
++		if (IS_ERR(vdir_cache))
++			goto out;
++		allocated = vdir_cache;
++	} else if (!file->f_pos && vdir_cache->vd_version != file->f_version) {
++		/* test file->f_pos here instead of ctx->pos */
++		err = reinit_vdir(vdir_cache);
++		if (unlikely(err))
++			goto out;
++	} else
++		return 0; /* success */
++
++	inode = file_inode(file);
++	err = copy_vdir(vdir_cache, au_ivdir(inode));
++	if (!err) {
++		file->f_version = inode_query_iversion(inode);
++		if (allocated)
++			au_set_fvdir_cache(file, allocated);
++	} else if (allocated)
++		au_vdir_free(allocated);
++
++out:
++	return err;
++}
++
++static loff_t calc_offset(struct au_vdir *vdir)
++{
++	loff_t offset;
++	union au_vdir_deblk_p p;
++
++	p.deblk = vdir->vd_deblk[vdir->vd_last.ul];
++	offset = vdir->vd_last.p.deblk - p.deblk;
++	offset += vdir->vd_deblk_sz * vdir->vd_last.ul;
++	return offset;
++}
++
++/* returns true or false */
++static int seek_vdir(struct file *file, struct dir_context *ctx)
++{
++	int valid;
++	unsigned int deblk_sz;
++	unsigned long ul, n;
++	loff_t offset;
++	union au_vdir_deblk_p p, deblk_end;
++	struct au_vdir *vdir_cache;
++
++	valid = 1;
++	vdir_cache = au_fvdir_cache(file);
++	offset = calc_offset(vdir_cache);
++	AuDbg("offset %lld\n", offset);
++	if (ctx->pos == offset)
++		goto out;
++
++	vdir_cache->vd_last.ul = 0;
++	vdir_cache->vd_last.p.deblk = vdir_cache->vd_deblk[0];
++	if (!ctx->pos)
++		goto out;
++
++	valid = 0;
++	deblk_sz = vdir_cache->vd_deblk_sz;
++	ul = div64_u64(ctx->pos, deblk_sz);
++	AuDbg("ul %lu\n", ul);
++	if (ul >= vdir_cache->vd_nblk)
++		goto out;
++
++	n = vdir_cache->vd_nblk;
++	for (; ul < n; ul++) {
++		p.deblk = vdir_cache->vd_deblk[ul];
++		deblk_end.deblk = p.deblk + deblk_sz;
++		offset = ul;
++		offset *= deblk_sz;
++		while (!is_deblk_end(&p, &deblk_end) && offset < ctx->pos) {
++			unsigned int l;
++
++			l = calc_size(p.de->de_str.len);
++			offset += l;
++			p.deblk += l;
++		}
++		if (!is_deblk_end(&p, &deblk_end)) {
++			valid = 1;
++			vdir_cache->vd_last.ul = ul;
++			vdir_cache->vd_last.p = p;
++			break;
++		}
++	}
++
++out:
++	/* smp_mb(); */
++	if (!valid)
++		AuDbg("valid %d\n", !valid);
++	return valid;
++}
++
++int au_vdir_fill_de(struct file *file, struct dir_context *ctx)
++{
++	unsigned int l, deblk_sz;
++	union au_vdir_deblk_p deblk_end;
++	struct au_vdir *vdir_cache;
++	struct au_vdir_de *de;
++
++	if (!seek_vdir(file, ctx))
++		return 0;
++
++	vdir_cache = au_fvdir_cache(file);
++	deblk_sz = vdir_cache->vd_deblk_sz;
++	while (1) {
++		deblk_end.deblk = vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
++		deblk_end.deblk += deblk_sz;
++		while (!is_deblk_end(&vdir_cache->vd_last.p, &deblk_end)) {
++			de = vdir_cache->vd_last.p.de;
++			AuDbg("%.*s, off%lld, i%lu, dt%d\n",
++			      de->de_str.len, de->de_str.name, ctx->pos,
++			      (unsigned long)de->de_ino, de->de_type);
++			if (unlikely(!dir_emit(ctx, de->de_str.name,
++					       de->de_str.len, de->de_ino,
++					       de->de_type))) {
++				/* todo: ignore the error caused by udba? */
++				/* return err; */
++				return 0;
++			}
++
++			l = calc_size(de->de_str.len);
++			vdir_cache->vd_last.p.deblk += l;
++			ctx->pos += l;
++		}
++		if (vdir_cache->vd_last.ul < vdir_cache->vd_nblk - 1) {
++			vdir_cache->vd_last.ul++;
++			vdir_cache->vd_last.p.deblk
++				= vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
++			ctx->pos = deblk_sz * vdir_cache->vd_last.ul;
++			continue;
++		}
++		break;
++	}
++
++	/* smp_mb(); */
++	return 0;
++}
+diff -Nurp linux-5.4/fs/aufs/vfsub.c linux-5.4-aufs/fs/aufs/vfsub.c
+--- linux-5.4/fs/aufs/vfsub.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/vfsub.c	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,889 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sub-routines for VFS
++ */
++
++#include <linux/mnt_namespace.h>
++#include <linux/namei.h>
++#include <linux/nsproxy.h>
++#include <linux/security.h>
++#include <linux/splice.h>
++#include "aufs.h"
++
++#ifdef CONFIG_AUFS_BR_FUSE
++int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb)
++{
++	if (!au_test_fuse(h_sb) || !au_userns)
++		return 0;
++
++	return is_current_mnt_ns(mnt) ? 0 : -EACCES;
++}
++#endif
++
++int vfsub_sync_filesystem(struct super_block *h_sb, int wait)
++{
++	int err;
++
++	lockdep_off();
++	down_read(&h_sb->s_umount);
++	err = __sync_filesystem(h_sb, wait);
++	up_read(&h_sb->s_umount);
++	lockdep_on();
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int vfsub_update_h_iattr(struct path *h_path, int *did)
++{
++	int err;
++	struct kstat st;
++	struct super_block *h_sb;
++
++	/* for remote fs, leave work for its getattr or d_revalidate */
++	/* for bad i_attr fs, handle them in aufs_getattr() */
++	/* still some fs may acquire i_mutex. we need to skip them */
++	err = 0;
++	if (!did)
++		did = &err;
++	h_sb = h_path->dentry->d_sb;
++	*did = (!au_test_fs_remote(h_sb) && au_test_fs_refresh_iattr(h_sb));
++	if (*did)
++		err = vfsub_getattr(h_path, &st);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct file *vfsub_dentry_open(struct path *path, int flags)
++{
++	struct file *file;
++
++	file = dentry_open(path, flags /* | __FMODE_NONOTIFY */,
++			   current_cred());
++	if (!IS_ERR_OR_NULL(file)
++	    && (file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
++		i_readcount_inc(d_inode(path->dentry));
++
++	return file;
++}
++
++struct file *vfsub_filp_open(const char *path, int oflags, int mode)
++{
++	struct file *file;
++
++	lockdep_off();
++	file = filp_open(path,
++			 oflags /* | __FMODE_NONOTIFY */,
++			 mode);
++	lockdep_on();
++	if (IS_ERR(file))
++		goto out;
++	vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
++
++out:
++	return file;
++}
++
++/*
++ * Ideally this function should call VFS:do_last() in order to keep all its
++ * checkings. But it is very hard for aufs to regenerate several VFS internal
++ * structure such as nameidata. This is a second (or third) best approach.
++ * cf. linux/fs/namei.c:do_last(), lookup_open() and atomic_open().
++ */
++int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
++		      struct vfsub_aopen_args *args)
++{
++	int err;
++	struct au_branch *br = args->br;
++	struct file *file = args->file;
++	/* copied from linux/fs/namei.c:atomic_open() */
++	struct dentry *const DENTRY_NOT_SET = (void *)-1UL;
++
++	IMustLock(dir);
++	AuDebugOn(!dir->i_op->atomic_open);
++
++	err = au_br_test_oflag(args->open_flag, br);
++	if (unlikely(err))
++		goto out;
++
++	au_lcnt_inc(&br->br_nfiles);
++	file->f_path.dentry = DENTRY_NOT_SET;
++	file->f_path.mnt = au_br_mnt(br);
++	AuDbg("%ps\n", dir->i_op->atomic_open);
++	err = dir->i_op->atomic_open(dir, dentry, file, args->open_flag,
++				     args->create_mode);
++	if (unlikely(err < 0)) {
++		au_lcnt_dec(&br->br_nfiles);
++		goto out;
++	}
++
++	/* temporary workaround for nfsv4 branch */
++	if (au_test_nfs(dir->i_sb))
++		nfs_mark_for_revalidate(dir);
++
++	if (file->f_mode & FMODE_CREATED)
++		fsnotify_create(dir, dentry);
++	if (!(file->f_mode & FMODE_OPENED)) {
++		au_lcnt_dec(&br->br_nfiles);
++		goto out;
++	}
++
++	/* todo: call VFS:may_open() here */
++	/* todo: ima_file_check() too? */
++	if (!err && (args->open_flag & __FMODE_EXEC))
++		err = deny_write_access(file);
++	if (!err)
++		fsnotify_open(file);
++	else
++		au_lcnt_dec(&br->br_nfiles);
++	/* note that the file is created and still opened */
++
++out:
++	return err;
++}
++
++int vfsub_kern_path(const char *name, unsigned int flags, struct path *path)
++{
++	int err;
++
++	err = kern_path(name, flags, path);
++	if (!err && d_is_positive(path->dentry))
++		vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
++	return err;
++}
++
++struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
++					     struct dentry *parent, int len)
++{
++	struct path path = {
++		.mnt = NULL
++	};
++
++	path.dentry = lookup_one_len_unlocked(name, parent, len);
++	if (IS_ERR(path.dentry))
++		goto out;
++	if (d_is_positive(path.dentry))
++		vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
++
++out:
++	AuTraceErrPtr(path.dentry);
++	return path.dentry;
++}
++
++struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent,
++				    int len)
++{
++	struct path path = {
++		.mnt = NULL
++	};
++
++	/* VFS checks it too, but by WARN_ON_ONCE() */
++	IMustLock(d_inode(parent));
++
++	path.dentry = lookup_one_len(name, parent, len);
++	if (IS_ERR(path.dentry))
++		goto out;
++	if (d_is_positive(path.dentry))
++		vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
++
++out:
++	AuTraceErrPtr(path.dentry);
++	return path.dentry;
++}
++
++void vfsub_call_lkup_one(void *args)
++{
++	struct vfsub_lkup_one_args *a = args;
++	*a->errp = vfsub_lkup_one(a->name, a->parent);
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
++				 struct dentry *d2, struct au_hinode *hdir2)
++{
++	struct dentry *d;
++
++	lockdep_off();
++	d = lock_rename(d1, d2);
++	lockdep_on();
++	au_hn_suspend(hdir1);
++	if (hdir1 != hdir2)
++		au_hn_suspend(hdir2);
++
++	return d;
++}
++
++void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
++			 struct dentry *d2, struct au_hinode *hdir2)
++{
++	au_hn_resume(hdir1);
++	if (hdir1 != hdir2)
++		au_hn_resume(hdir2);
++	lockdep_off();
++	unlock_rename(d1, d2);
++	lockdep_on();
++}
++
++/* ---------------------------------------------------------------------- */
++
++int vfsub_create(struct inode *dir, struct path *path, int mode, bool want_excl)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_mknod(path, d, mode, 0);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_create(dir, path->dentry, mode, want_excl);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = *path;
++		int did;
++
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = path->dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++int vfsub_symlink(struct inode *dir, struct path *path, const char *symname)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_symlink(path, d, symname);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_symlink(dir, path->dentry, symname);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = *path;
++		int did;
++
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = path->dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_mknod(path, d, mode, new_encode_dev(dev));
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_mknod(dir, path->dentry, mode, dev);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = *path;
++		int did;
++
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = path->dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++static int au_test_nlink(struct inode *inode)
++{
++	const unsigned int link_max = UINT_MAX >> 1; /* rough margin */
++
++	if (!au_test_fs_no_limit_nlink(inode->i_sb)
++	    || inode->i_nlink < link_max)
++		return 0;
++	return -EMLINK;
++}
++
++int vfsub_link(struct dentry *src_dentry, struct inode *dir, struct path *path,
++	       struct inode **delegated_inode)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	err = au_test_nlink(d_inode(src_dentry));
++	if (unlikely(err))
++		return err;
++
++	/* we don't call may_linkat() */
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_link(src_dentry, path, d);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_link(src_dentry, dir, path->dentry, delegated_inode);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = *path;
++		int did;
++
++		/* fuse has different memory inode for the same inumber */
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = path->dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++			tmp.dentry = src_dentry;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry,
++		 struct inode *dir, struct path *path,
++		 struct inode **delegated_inode, unsigned int flags)
++{
++	int err;
++	struct path tmp = {
++		.mnt	= path->mnt
++	};
++	struct dentry *d;
++
++	IMustLock(dir);
++	IMustLock(src_dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	tmp.dentry = src_dentry->d_parent;
++	err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_rename(src_dir, src_dentry, dir, path->dentry,
++			 delegated_inode, flags);
++	lockdep_on();
++	if (!err) {
++		int did;
++
++		tmp.dentry = d->d_parent;
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = src_dentry;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++			tmp.dentry = src_dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++int vfsub_mkdir(struct inode *dir, struct path *path, int mode)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_mkdir(path, d, mode);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_mkdir(dir, path->dentry, mode);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = *path;
++		int did;
++
++		vfsub_update_h_iattr(&tmp, &did);
++		if (did) {
++			tmp.dentry = path->dentry->d_parent;
++			vfsub_update_h_iattr(&tmp, /*did*/NULL);
++		}
++		/*ignore*/
++	}
++
++out:
++	return err;
++}
++
++int vfsub_rmdir(struct inode *dir, struct path *path)
++{
++	int err;
++	struct dentry *d;
++
++	IMustLock(dir);
++
++	d = path->dentry;
++	path->dentry = d->d_parent;
++	err = security_path_rmdir(path, d);
++	path->dentry = d;
++	if (unlikely(err))
++		goto out;
++
++	lockdep_off();
++	err = vfs_rmdir(dir, path->dentry);
++	lockdep_on();
++	if (!err) {
++		struct path tmp = {
++			.dentry	= path->dentry->d_parent,
++			.mnt	= path->mnt
++		};
++
++		vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
++	}
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* todo: support mmap_sem? */
++ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
++		     loff_t *ppos)
++{
++	ssize_t err;
++
++	lockdep_off();
++	err = vfs_read(file, ubuf, count, ppos);
++	lockdep_on();
++	if (err >= 0)
++		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
++	return err;
++}
++
++/* todo: kernel_read()? */
++ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
++		     loff_t *ppos)
++{
++	ssize_t err;
++	mm_segment_t oldfs;
++	union {
++		void *k;
++		char __user *u;
++	} buf;
++
++	buf.k = kbuf;
++	oldfs = get_fs();
++	set_fs(KERNEL_DS);
++	err = vfsub_read_u(file, buf.u, count, ppos);
++	set_fs(oldfs);
++	return err;
++}
++
++ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
++		      loff_t *ppos)
++{
++	ssize_t err;
++
++	lockdep_off();
++	err = vfs_write(file, ubuf, count, ppos);
++	lockdep_on();
++	if (err >= 0)
++		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
++	return err;
++}
++
++ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos)
++{
++	ssize_t err;
++	mm_segment_t oldfs;
++	union {
++		void *k;
++		const char __user *u;
++	} buf;
++
++	buf.k = kbuf;
++	oldfs = get_fs();
++	set_fs(KERNEL_DS);
++	err = vfsub_write_u(file, buf.u, count, ppos);
++	set_fs(oldfs);
++	return err;
++}
++
++int vfsub_flush(struct file *file, fl_owner_t id)
++{
++	int err;
++
++	err = 0;
++	if (file->f_op->flush) {
++		if (!au_test_nfs(file->f_path.dentry->d_sb))
++			err = file->f_op->flush(file, id);
++		else {
++			lockdep_off();
++			err = file->f_op->flush(file, id);
++			lockdep_on();
++		}
++		if (!err)
++			vfsub_update_h_iattr(&file->f_path, /*did*/NULL);
++		/*ignore*/
++	}
++	return err;
++}
++
++int vfsub_iterate_dir(struct file *file, struct dir_context *ctx)
++{
++	int err;
++
++	AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
++
++	lockdep_off();
++	err = iterate_dir(file, ctx);
++	lockdep_on();
++	if (err >= 0)
++		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
++
++	return err;
++}
++
++long vfsub_splice_to(struct file *in, loff_t *ppos,
++		     struct pipe_inode_info *pipe, size_t len,
++		     unsigned int flags)
++{
++	long err;
++
++	lockdep_off();
++	err = do_splice_to(in, ppos, pipe, len, flags);
++	lockdep_on();
++	file_accessed(in);
++	if (err >= 0)
++		vfsub_update_h_iattr(&in->f_path, /*did*/NULL); /*ignore*/
++	return err;
++}
++
++long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
++		       loff_t *ppos, size_t len, unsigned int flags)
++{
++	long err;
++
++	lockdep_off();
++	err = do_splice_from(pipe, out, ppos, len, flags);
++	lockdep_on();
++	if (err >= 0)
++		vfsub_update_h_iattr(&out->f_path, /*did*/NULL); /*ignore*/
++	return err;
++}
++
++int vfsub_fsync(struct file *file, struct path *path, int datasync)
++{
++	int err;
++
++	/* file can be NULL */
++	lockdep_off();
++	err = vfs_fsync(file, datasync);
++	lockdep_on();
++	if (!err) {
++		if (!path) {
++			AuDebugOn(!file);
++			path = &file->f_path;
++		}
++		vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
++	}
++	return err;
++}
++
++/* cf. open.c:do_sys_truncate() and do_sys_ftruncate() */
++int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
++		struct file *h_file)
++{
++	int err;
++	struct inode *h_inode;
++	struct super_block *h_sb;
++
++	if (!h_file) {
++		err = vfsub_truncate(h_path, length);
++		goto out;
++	}
++
++	h_inode = d_inode(h_path->dentry);
++	h_sb = h_inode->i_sb;
++	lockdep_off();
++	sb_start_write(h_sb);
++	lockdep_on();
++	err = locks_verify_truncate(h_inode, h_file, length);
++	if (!err)
++		err = security_path_truncate(h_path);
++	if (!err) {
++		lockdep_off();
++		err = do_truncate(h_path->dentry, length, attr, h_file);
++		lockdep_on();
++	}
++	lockdep_off();
++	sb_end_write(h_sb);
++	lockdep_on();
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_vfsub_mkdir_args {
++	int *errp;
++	struct inode *dir;
++	struct path *path;
++	int mode;
++};
++
++static void au_call_vfsub_mkdir(void *args)
++{
++	struct au_vfsub_mkdir_args *a = args;
++	*a->errp = vfsub_mkdir(a->dir, a->path, a->mode);
++}
++
++int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode)
++{
++	int err, do_sio, wkq_err;
++
++	do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
++	if (!do_sio) {
++		lockdep_off();
++		err = vfsub_mkdir(dir, path, mode);
++		lockdep_on();
++	} else {
++		struct au_vfsub_mkdir_args args = {
++			.errp	= &err,
++			.dir	= dir,
++			.path	= path,
++			.mode	= mode
++		};
++		wkq_err = au_wkq_wait(au_call_vfsub_mkdir, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	return err;
++}
++
++struct au_vfsub_rmdir_args {
++	int *errp;
++	struct inode *dir;
++	struct path *path;
++};
++
++static void au_call_vfsub_rmdir(void *args)
++{
++	struct au_vfsub_rmdir_args *a = args;
++	*a->errp = vfsub_rmdir(a->dir, a->path);
++}
++
++int vfsub_sio_rmdir(struct inode *dir, struct path *path)
++{
++	int err, do_sio, wkq_err;
++
++	do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
++	if (!do_sio) {
++		lockdep_off();
++		err = vfsub_rmdir(dir, path);
++		lockdep_on();
++	} else {
++		struct au_vfsub_rmdir_args args = {
++			.errp	= &err,
++			.dir	= dir,
++			.path	= path
++		};
++		wkq_err = au_wkq_wait(au_call_vfsub_rmdir, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct notify_change_args {
++	int *errp;
++	struct path *path;
++	struct iattr *ia;
++	struct inode **delegated_inode;
++};
++
++static void call_notify_change(void *args)
++{
++	struct notify_change_args *a = args;
++	struct inode *h_inode;
++
++	h_inode = d_inode(a->path->dentry);
++	IMustLock(h_inode);
++
++	*a->errp = -EPERM;
++	if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) {
++		lockdep_off();
++		*a->errp = notify_change(a->path->dentry, a->ia,
++					 a->delegated_inode);
++		lockdep_on();
++		if (!*a->errp)
++			vfsub_update_h_iattr(a->path, /*did*/NULL); /*ignore*/
++	}
++	AuTraceErr(*a->errp);
++}
++
++int vfsub_notify_change(struct path *path, struct iattr *ia,
++			struct inode **delegated_inode)
++{
++	int err;
++	struct notify_change_args args = {
++		.errp			= &err,
++		.path			= path,
++		.ia			= ia,
++		.delegated_inode	= delegated_inode
++	};
++
++	call_notify_change(&args);
++
++	return err;
++}
++
++int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
++			    struct inode **delegated_inode)
++{
++	int err, wkq_err;
++	struct notify_change_args args = {
++		.errp			= &err,
++		.path			= path,
++		.ia			= ia,
++		.delegated_inode	= delegated_inode
++	};
++
++	wkq_err = au_wkq_wait(call_notify_change, &args);
++	if (unlikely(wkq_err))
++		err = wkq_err;
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct unlink_args {
++	int *errp;
++	struct inode *dir;
++	struct path *path;
++	struct inode **delegated_inode;
++};
++
++static void call_unlink(void *args)
++{
++	struct unlink_args *a = args;
++	struct dentry *d = a->path->dentry;
++	struct inode *h_inode;
++	const int stop_sillyrename = (au_test_nfs(d->d_sb)
++				      && au_dcount(d) == 1);
++
++	IMustLock(a->dir);
++
++	a->path->dentry = d->d_parent;
++	*a->errp = security_path_unlink(a->path, d);
++	a->path->dentry = d;
++	if (unlikely(*a->errp))
++		return;
++
++	if (!stop_sillyrename)
++		dget(d);
++	h_inode = NULL;
++	if (d_is_positive(d)) {
++		h_inode = d_inode(d);
++		ihold(h_inode);
++	}
++
++	lockdep_off();
++	*a->errp = vfs_unlink(a->dir, d, a->delegated_inode);
++	lockdep_on();
++	if (!*a->errp) {
++		struct path tmp = {
++			.dentry = d->d_parent,
++			.mnt	= a->path->mnt
++		};
++		vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
++	}
++
++	if (!stop_sillyrename)
++		dput(d);
++	if (h_inode)
++		iput(h_inode);
++
++	AuTraceErr(*a->errp);
++}
++
++/*
++ * @dir: must be locked.
++ * @dentry: target dentry.
++ */
++int vfsub_unlink(struct inode *dir, struct path *path,
++		 struct inode **delegated_inode, int force)
++{
++	int err;
++	struct unlink_args args = {
++		.errp			= &err,
++		.dir			= dir,
++		.path			= path,
++		.delegated_inode	= delegated_inode
++	};
++
++	if (!force)
++		call_unlink(&args);
++	else {
++		int wkq_err;
++
++		wkq_err = au_wkq_wait(call_unlink, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/vfsub.h linux-5.4-aufs/fs/aufs/vfsub.h
+--- linux-5.4/fs/aufs/vfsub.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/vfsub.h	2019-11-28 01:25:59.068925618 +0200
+@@ -0,0 +1,341 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * sub-routines for VFS
++ */
++
++#ifndef __AUFS_VFSUB_H__
++#define __AUFS_VFSUB_H__
++
++#ifdef __KERNEL__
++
++#include <linux/fs.h>
++#include <linux/mount.h>
++#include <linux/posix_acl.h>
++#include <linux/xattr.h>
++#include "debug.h"
++
++/* copied from linux/fs/internal.h */
++/* todo: BAD approach!! */
++extern void __mnt_drop_write(struct vfsmount *);
++extern struct file *alloc_empty_file(int, const struct cred *);
++
++/* ---------------------------------------------------------------------- */
++
++/* lock subclass for lower inode */
++/* default MAX_LOCKDEP_SUBCLASSES(8) is not enough */
++/* reduce? gave up. */
++enum {
++	AuLsc_I_Begin = I_MUTEX_PARENT2, /* 5 */
++	AuLsc_I_PARENT,		/* lower inode, parent first */
++	AuLsc_I_PARENT2,	/* copyup dirs */
++	AuLsc_I_PARENT3,	/* copyup wh */
++	AuLsc_I_CHILD,
++	AuLsc_I_CHILD2,
++	AuLsc_I_End
++};
++
++/* to debug easier, do not make them inlined functions */
++#define MtxMustLock(mtx)	AuDebugOn(!mutex_is_locked(mtx))
++#define IMustLock(i)		AuDebugOn(!inode_is_locked(i))
++
++/* ---------------------------------------------------------------------- */
++
++static inline void vfsub_drop_nlink(struct inode *inode)
++{
++	AuDebugOn(!inode->i_nlink);
++	drop_nlink(inode);
++}
++
++static inline void vfsub_dead_dir(struct inode *inode)
++{
++	AuDebugOn(!S_ISDIR(inode->i_mode));
++	inode->i_flags |= S_DEAD;
++	clear_nlink(inode);
++}
++
++static inline int vfsub_native_ro(struct inode *inode)
++{
++	return sb_rdonly(inode->i_sb)
++		|| IS_RDONLY(inode)
++		/* || IS_APPEND(inode) */
++		|| IS_IMMUTABLE(inode);
++}
++
++#ifdef CONFIG_AUFS_BR_FUSE
++int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb);
++#else
++AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb);
++#endif
++
++int vfsub_sync_filesystem(struct super_block *h_sb, int wait);
++
++/* ---------------------------------------------------------------------- */
++
++int vfsub_update_h_iattr(struct path *h_path, int *did);
++struct file *vfsub_dentry_open(struct path *path, int flags);
++struct file *vfsub_filp_open(const char *path, int oflags, int mode);
++struct au_branch;
++struct vfsub_aopen_args {
++	struct file		*file;
++	unsigned int		open_flag;
++	umode_t			create_mode;
++	struct au_branch	*br;
++};
++int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
++		      struct vfsub_aopen_args *args);
++int vfsub_kern_path(const char *name, unsigned int flags, struct path *path);
++
++struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
++					     struct dentry *parent, int len);
++struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent,
++				    int len);
++
++struct vfsub_lkup_one_args {
++	struct dentry **errp;
++	struct qstr *name;
++	struct dentry *parent;
++};
++
++static inline struct dentry *vfsub_lkup_one(struct qstr *name,
++					    struct dentry *parent)
++{
++	return vfsub_lookup_one_len(name->name, parent, name->len);
++}
++
++void vfsub_call_lkup_one(void *args);
++
++/* ---------------------------------------------------------------------- */
++
++static inline int vfsub_mnt_want_write(struct vfsmount *mnt)
++{
++	int err;
++
++	lockdep_off();
++	err = mnt_want_write(mnt);
++	lockdep_on();
++	return err;
++}
++
++static inline void vfsub_mnt_drop_write(struct vfsmount *mnt)
++{
++	lockdep_off();
++	mnt_drop_write(mnt);
++	lockdep_on();
++}
++
++#if 0 /* reserved */
++static inline void vfsub_mnt_drop_write_file(struct file *file)
++{
++	lockdep_off();
++	mnt_drop_write_file(file);
++	lockdep_on();
++}
++#endif
++
++/* ---------------------------------------------------------------------- */
++
++struct au_hinode;
++struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
++				 struct dentry *d2, struct au_hinode *hdir2);
++void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
++			 struct dentry *d2, struct au_hinode *hdir2);
++
++int vfsub_create(struct inode *dir, struct path *path, int mode,
++		 bool want_excl);
++int vfsub_symlink(struct inode *dir, struct path *path,
++		  const char *symname);
++int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev);
++int vfsub_link(struct dentry *src_dentry, struct inode *dir,
++	       struct path *path, struct inode **delegated_inode);
++int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry,
++		 struct inode *hdir, struct path *path,
++		 struct inode **delegated_inode, unsigned int flags);
++int vfsub_mkdir(struct inode *dir, struct path *path, int mode);
++int vfsub_rmdir(struct inode *dir, struct path *path);
++
++/* ---------------------------------------------------------------------- */
++
++ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
++		     loff_t *ppos);
++ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
++			loff_t *ppos);
++ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
++		      loff_t *ppos);
++ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count,
++		      loff_t *ppos);
++int vfsub_flush(struct file *file, fl_owner_t id);
++int vfsub_iterate_dir(struct file *file, struct dir_context *ctx);
++
++static inline loff_t vfsub_f_size_read(struct file *file)
++{
++	return i_size_read(file_inode(file));
++}
++
++static inline unsigned int vfsub_file_flags(struct file *file)
++{
++	unsigned int flags;
++
++	spin_lock(&file->f_lock);
++	flags = file->f_flags;
++	spin_unlock(&file->f_lock);
++
++	return flags;
++}
++
++static inline int vfsub_file_execed(struct file *file)
++{
++	/* todo: direct access f_flags */
++	return !!(vfsub_file_flags(file) & __FMODE_EXEC);
++}
++
++#if 0 /* reserved */
++static inline void vfsub_file_accessed(struct file *h_file)
++{
++	file_accessed(h_file);
++	vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL); /*ignore*/
++}
++#endif
++
++#if 0 /* reserved */
++static inline void vfsub_touch_atime(struct vfsmount *h_mnt,
++				     struct dentry *h_dentry)
++{
++	struct path h_path = {
++		.dentry	= h_dentry,
++		.mnt	= h_mnt
++	};
++	touch_atime(&h_path);
++	vfsub_update_h_iattr(&h_path, /*did*/NULL); /*ignore*/
++}
++#endif
++
++static inline int vfsub_update_time(struct inode *h_inode,
++				    struct timespec64 *ts, int flags)
++{
++	return update_time(h_inode, ts, flags);
++	/* no vfsub_update_h_iattr() since we don't have struct path */
++}
++
++#ifdef CONFIG_FS_POSIX_ACL
++static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode)
++{
++	int err;
++
++	err = posix_acl_chmod(h_inode, h_mode);
++	if (err == -EOPNOTSUPP)
++		err = 0;
++	return err;
++}
++#else
++AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode);
++#endif
++
++long vfsub_splice_to(struct file *in, loff_t *ppos,
++		     struct pipe_inode_info *pipe, size_t len,
++		     unsigned int flags);
++long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
++		       loff_t *ppos, size_t len, unsigned int flags);
++
++static inline long vfsub_truncate(struct path *path, loff_t length)
++{
++	long err;
++
++	lockdep_off();
++	err = vfs_truncate(path, length);
++	lockdep_on();
++	return err;
++}
++
++int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
++		struct file *h_file);
++int vfsub_fsync(struct file *file, struct path *path, int datasync);
++
++/*
++ * re-use branch fs's ioctl(FICLONE) while aufs itself doesn't support such
++ * ioctl.
++ */
++static inline loff_t vfsub_clone_file_range(struct file *src, struct file *dst,
++					    loff_t len)
++{
++	loff_t err;
++
++	lockdep_off();
++	err = vfs_clone_file_range(src, 0, dst, 0, len, /*remap_flags*/0);
++	lockdep_on();
++
++	return err;
++}
++
++/* copy_file_range(2) is a systemcall */
++static inline ssize_t vfsub_copy_file_range(struct file *src, loff_t src_pos,
++					    struct file *dst, loff_t dst_pos,
++					    size_t len, unsigned int flags)
++{
++	ssize_t ssz;
++
++	lockdep_off();
++	ssz = vfs_copy_file_range(src, src_pos, dst, dst_pos, len, flags);
++	lockdep_on();
++
++	return ssz;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static inline loff_t vfsub_llseek(struct file *file, loff_t offset, int origin)
++{
++	loff_t err;
++
++	lockdep_off();
++	err = vfs_llseek(file, offset, origin);
++	lockdep_on();
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode);
++int vfsub_sio_rmdir(struct inode *dir, struct path *path);
++int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
++			    struct inode **delegated_inode);
++int vfsub_notify_change(struct path *path, struct iattr *ia,
++			struct inode **delegated_inode);
++int vfsub_unlink(struct inode *dir, struct path *path,
++		 struct inode **delegated_inode, int force);
++
++static inline int vfsub_getattr(const struct path *path, struct kstat *st)
++{
++	return vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static inline int vfsub_setxattr(struct dentry *dentry, const char *name,
++				 const void *value, size_t size, int flags)
++{
++	int err;
++
++	lockdep_off();
++	err = vfs_setxattr(dentry, name, value, size, flags);
++	lockdep_on();
++
++	return err;
++}
++
++static inline int vfsub_removexattr(struct dentry *dentry, const char *name)
++{
++	int err;
++
++	lockdep_off();
++	err = vfs_removexattr(dentry, name);
++	lockdep_on();
++
++	return err;
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_VFSUB_H__ */
+diff -Nurp linux-5.4/fs/aufs/whout.c linux-5.4-aufs/fs/aufs/whout.c
+--- linux-5.4/fs/aufs/whout.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/whout.c	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,1049 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * whiteout for logical deletion and opaque directory
++ */
++
++#include "aufs.h"
++
++#define WH_MASK			0444
++
++/*
++ * If a directory contains this file, then it is opaque.  We start with the
++ * .wh. flag so that it is blocked by lookup.
++ */
++static struct qstr diropq_name = QSTR_INIT(AUFS_WH_DIROPQ,
++					   sizeof(AUFS_WH_DIROPQ) - 1);
++
++/*
++ * generate whiteout name, which is NOT terminated by NULL.
++ * @name: original d_name.name
++ * @len: original d_name.len
++ * @wh: whiteout qstr
++ * returns zero when succeeds, otherwise error.
++ * succeeded value as wh->name should be freed by kfree().
++ */
++int au_wh_name_alloc(struct qstr *wh, const struct qstr *name)
++{
++	char *p;
++
++	if (unlikely(name->len > PATH_MAX - AUFS_WH_PFX_LEN))
++		return -ENAMETOOLONG;
++
++	wh->len = name->len + AUFS_WH_PFX_LEN;
++	p = kmalloc(wh->len, GFP_NOFS);
++	wh->name = p;
++	if (p) {
++		memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
++		memcpy(p + AUFS_WH_PFX_LEN, name->name, name->len);
++		/* smp_mb(); */
++		return 0;
++	}
++	return -ENOMEM;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * test if the @wh_name exists under @h_parent.
++ * @try_sio specifies the necessary of super-io.
++ */
++int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio)
++{
++	int err;
++	struct dentry *wh_dentry;
++
++	if (!try_sio)
++		wh_dentry = vfsub_lkup_one(wh_name, h_parent);
++	else
++		wh_dentry = au_sio_lkup_one(wh_name, h_parent);
++	err = PTR_ERR(wh_dentry);
++	if (IS_ERR(wh_dentry)) {
++		if (err == -ENAMETOOLONG)
++			err = 0;
++		goto out;
++	}
++
++	err = 0;
++	if (d_is_negative(wh_dentry))
++		goto out_wh; /* success */
++
++	err = 1;
++	if (d_is_reg(wh_dentry))
++		goto out_wh; /* success */
++
++	err = -EIO;
++	AuIOErr("%pd Invalid whiteout entry type 0%o.\n",
++		wh_dentry, d_inode(wh_dentry)->i_mode);
++
++out_wh:
++	dput(wh_dentry);
++out:
++	return err;
++}
++
++/*
++ * test if the @h_dentry sets opaque or not.
++ */
++int au_diropq_test(struct dentry *h_dentry)
++{
++	int err;
++	struct inode *h_dir;
++
++	h_dir = d_inode(h_dentry);
++	err = au_wh_test(h_dentry, &diropq_name,
++			 au_test_h_perm_sio(h_dir, MAY_EXEC));
++	return err;
++}
++
++/*
++ * returns a negative dentry whose name is unique and temporary.
++ */
++struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
++			     struct qstr *prefix)
++{
++	struct dentry *dentry;
++	int i;
++	char defname[NAME_MAX - AUFS_MAX_NAMELEN + DNAME_INLINE_LEN + 1],
++		*name, *p;
++	/* strict atomic_t is unnecessary here */
++	static unsigned short cnt;
++	struct qstr qs;
++
++	BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN);
++
++	name = defname;
++	qs.len = sizeof(defname) - DNAME_INLINE_LEN + prefix->len - 1;
++	if (unlikely(prefix->len > DNAME_INLINE_LEN)) {
++		dentry = ERR_PTR(-ENAMETOOLONG);
++		if (unlikely(qs.len > NAME_MAX))
++			goto out;
++		dentry = ERR_PTR(-ENOMEM);
++		name = kmalloc(qs.len + 1, GFP_NOFS);
++		if (unlikely(!name))
++			goto out;
++	}
++
++	/* doubly whiteout-ed */
++	memcpy(name, AUFS_WH_PFX AUFS_WH_PFX, AUFS_WH_PFX_LEN * 2);
++	p = name + AUFS_WH_PFX_LEN * 2;
++	memcpy(p, prefix->name, prefix->len);
++	p += prefix->len;
++	*p++ = '.';
++	AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN);
++
++	qs.name = name;
++	for (i = 0; i < 3; i++) {
++		sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++);
++		dentry = au_sio_lkup_one(&qs, h_parent);
++		if (IS_ERR(dentry) || d_is_negative(dentry))
++			goto out_name;
++		dput(dentry);
++	}
++	/* pr_warn("could not get random name\n"); */
++	dentry = ERR_PTR(-EEXIST);
++	AuDbg("%.*s\n", AuLNPair(&qs));
++	BUG();
++
++out_name:
++	if (name != defname)
++		au_kfree_try_rcu(name);
++out:
++	AuTraceErrPtr(dentry);
++	return dentry;
++}
++
++/*
++ * rename the @h_dentry on @br to the whiteouted temporary name.
++ */
++int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br)
++{
++	int err;
++	struct path h_path = {
++		.mnt = au_br_mnt(br)
++	};
++	struct inode *h_dir, *delegated;
++	struct dentry *h_parent;
++
++	h_parent = h_dentry->d_parent; /* dir inode is locked */
++	h_dir = d_inode(h_parent);
++	IMustLock(h_dir);
++
++	h_path.dentry = au_whtmp_lkup(h_parent, br, &h_dentry->d_name);
++	err = PTR_ERR(h_path.dentry);
++	if (IS_ERR(h_path.dentry))
++		goto out;
++
++	/* under the same dir, no need to lock_rename() */
++	delegated = NULL;
++	err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated,
++			   /*flags*/0);
++	AuTraceErr(err);
++	if (unlikely(err == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal rename\n");
++		iput(delegated);
++	}
++	dput(h_path.dentry);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * functions for removing a whiteout
++ */
++
++static int do_unlink_wh(struct inode *h_dir, struct path *h_path)
++{
++	int err, force;
++	struct inode *delegated;
++
++	/*
++	 * forces superio when the dir has a sticky bit.
++	 * this may be a violation of unix fs semantics.
++	 */
++	force = (h_dir->i_mode & S_ISVTX)
++		&& !uid_eq(current_fsuid(), d_inode(h_path->dentry)->i_uid);
++	delegated = NULL;
++	err = vfsub_unlink(h_dir, h_path, &delegated, force);
++	if (unlikely(err == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal unlink\n");
++		iput(delegated);
++	}
++	return err;
++}
++
++int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
++			struct dentry *dentry)
++{
++	int err;
++
++	err = do_unlink_wh(h_dir, h_path);
++	if (!err && dentry)
++		au_set_dbwh(dentry, -1);
++
++	return err;
++}
++
++static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh,
++			  struct au_branch *br)
++{
++	int err;
++	struct path h_path = {
++		.mnt = au_br_mnt(br)
++	};
++
++	err = 0;
++	h_path.dentry = vfsub_lkup_one(wh, h_parent);
++	if (IS_ERR(h_path.dentry))
++		err = PTR_ERR(h_path.dentry);
++	else {
++		if (d_is_reg(h_path.dentry))
++			err = do_unlink_wh(d_inode(h_parent), &h_path);
++		dput(h_path.dentry);
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * initialize/clean whiteout for a branch
++ */
++
++static void au_wh_clean(struct inode *h_dir, struct path *whpath,
++			const int isdir)
++{
++	int err;
++	struct inode *delegated;
++
++	if (d_is_negative(whpath->dentry))
++		return;
++
++	if (isdir)
++		err = vfsub_rmdir(h_dir, whpath);
++	else {
++		delegated = NULL;
++		err = vfsub_unlink(h_dir, whpath, &delegated, /*force*/0);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal unlink\n");
++			iput(delegated);
++		}
++	}
++	if (unlikely(err))
++		pr_warn("failed removing %pd (%d), ignored.\n",
++			whpath->dentry, err);
++}
++
++static int test_linkable(struct dentry *h_root)
++{
++	struct inode *h_dir = d_inode(h_root);
++
++	if (h_dir->i_op->link)
++		return 0;
++
++	pr_err("%pd (%s) doesn't support link(2), use noplink and rw+nolwh\n",
++	       h_root, au_sbtype(h_root->d_sb));
++	return -ENOSYS;
++}
++
++/* todo: should this mkdir be done in /sbin/mount.aufs helper? */
++static int au_whdir(struct inode *h_dir, struct path *path)
++{
++	int err;
++
++	err = -EEXIST;
++	if (d_is_negative(path->dentry)) {
++		int mode = 0700;
++
++		if (au_test_nfs(path->dentry->d_sb))
++			mode |= 0111;
++		err = vfsub_mkdir(h_dir, path, mode);
++	} else if (d_is_dir(path->dentry))
++		err = 0;
++	else
++		pr_err("unknown %pd exists\n", path->dentry);
++
++	return err;
++}
++
++struct au_wh_base {
++	const struct qstr *name;
++	struct dentry *dentry;
++};
++
++static void au_wh_init_ro(struct inode *h_dir, struct au_wh_base base[],
++			  struct path *h_path)
++{
++	h_path->dentry = base[AuBrWh_BASE].dentry;
++	au_wh_clean(h_dir, h_path, /*isdir*/0);
++	h_path->dentry = base[AuBrWh_PLINK].dentry;
++	au_wh_clean(h_dir, h_path, /*isdir*/1);
++	h_path->dentry = base[AuBrWh_ORPH].dentry;
++	au_wh_clean(h_dir, h_path, /*isdir*/1);
++}
++
++/*
++ * returns tri-state,
++ * minus: error, caller should print the message
++ * zero: success
++ * plus: error, caller should NOT print the message
++ */
++static int au_wh_init_rw_nolink(struct dentry *h_root, struct au_wbr *wbr,
++				int do_plink, struct au_wh_base base[],
++				struct path *h_path)
++{
++	int err;
++	struct inode *h_dir;
++
++	h_dir = d_inode(h_root);
++	h_path->dentry = base[AuBrWh_BASE].dentry;
++	au_wh_clean(h_dir, h_path, /*isdir*/0);
++	h_path->dentry = base[AuBrWh_PLINK].dentry;
++	if (do_plink) {
++		err = test_linkable(h_root);
++		if (unlikely(err)) {
++			err = 1;
++			goto out;
++		}
++
++		err = au_whdir(h_dir, h_path);
++		if (unlikely(err))
++			goto out;
++		wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
++	} else
++		au_wh_clean(h_dir, h_path, /*isdir*/1);
++	h_path->dentry = base[AuBrWh_ORPH].dentry;
++	err = au_whdir(h_dir, h_path);
++	if (unlikely(err))
++		goto out;
++	wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
++
++out:
++	return err;
++}
++
++/*
++ * for the moment, aufs supports the branch filesystem which does not support
++ * link(2). testing on FAT which does not support i_op->setattr() fully either,
++ * copyup failed. finally, such filesystem will not be used as the writable
++ * branch.
++ *
++ * returns tri-state, see above.
++ */
++static int au_wh_init_rw(struct dentry *h_root, struct au_wbr *wbr,
++			 int do_plink, struct au_wh_base base[],
++			 struct path *h_path)
++{
++	int err;
++	struct inode *h_dir;
++
++	WbrWhMustWriteLock(wbr);
++
++	err = test_linkable(h_root);
++	if (unlikely(err)) {
++		err = 1;
++		goto out;
++	}
++
++	/*
++	 * todo: should this create be done in /sbin/mount.aufs helper?
++	 */
++	err = -EEXIST;
++	h_dir = d_inode(h_root);
++	if (d_is_negative(base[AuBrWh_BASE].dentry)) {
++		h_path->dentry = base[AuBrWh_BASE].dentry;
++		err = vfsub_create(h_dir, h_path, WH_MASK, /*want_excl*/true);
++	} else if (d_is_reg(base[AuBrWh_BASE].dentry))
++		err = 0;
++	else
++		pr_err("unknown %pd2 exists\n", base[AuBrWh_BASE].dentry);
++	if (unlikely(err))
++		goto out;
++
++	h_path->dentry = base[AuBrWh_PLINK].dentry;
++	if (do_plink) {
++		err = au_whdir(h_dir, h_path);
++		if (unlikely(err))
++			goto out;
++		wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
++	} else
++		au_wh_clean(h_dir, h_path, /*isdir*/1);
++	wbr->wbr_whbase = dget(base[AuBrWh_BASE].dentry);
++
++	h_path->dentry = base[AuBrWh_ORPH].dentry;
++	err = au_whdir(h_dir, h_path);
++	if (unlikely(err))
++		goto out;
++	wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
++
++out:
++	return err;
++}
++
++/*
++ * initialize the whiteout base file/dir for @br.
++ */
++int au_wh_init(struct au_branch *br, struct super_block *sb)
++{
++	int err, i;
++	const unsigned char do_plink
++		= !!au_opt_test(au_mntflags(sb), PLINK);
++	struct inode *h_dir;
++	struct path path = br->br_path;
++	struct dentry *h_root = path.dentry;
++	struct au_wbr *wbr = br->br_wbr;
++	static const struct qstr base_name[] = {
++		[AuBrWh_BASE] = QSTR_INIT(AUFS_BASE_NAME,
++					  sizeof(AUFS_BASE_NAME) - 1),
++		[AuBrWh_PLINK] = QSTR_INIT(AUFS_PLINKDIR_NAME,
++					   sizeof(AUFS_PLINKDIR_NAME) - 1),
++		[AuBrWh_ORPH] = QSTR_INIT(AUFS_ORPHDIR_NAME,
++					  sizeof(AUFS_ORPHDIR_NAME) - 1)
++	};
++	struct au_wh_base base[] = {
++		[AuBrWh_BASE] = {
++			.name	= base_name + AuBrWh_BASE,
++			.dentry	= NULL
++		},
++		[AuBrWh_PLINK] = {
++			.name	= base_name + AuBrWh_PLINK,
++			.dentry	= NULL
++		},
++		[AuBrWh_ORPH] = {
++			.name	= base_name + AuBrWh_ORPH,
++			.dentry	= NULL
++		}
++	};
++
++	if (wbr)
++		WbrWhMustWriteLock(wbr);
++
++	for (i = 0; i < AuBrWh_Last; i++) {
++		/* doubly whiteouted */
++		struct dentry *d;
++
++		d = au_wh_lkup(h_root, (void *)base[i].name, br);
++		err = PTR_ERR(d);
++		if (IS_ERR(d))
++			goto out;
++
++		base[i].dentry = d;
++		AuDebugOn(wbr
++			  && wbr->wbr_wh[i]
++			  && wbr->wbr_wh[i] != base[i].dentry);
++	}
++
++	if (wbr)
++		for (i = 0; i < AuBrWh_Last; i++) {
++			dput(wbr->wbr_wh[i]);
++			wbr->wbr_wh[i] = NULL;
++		}
++
++	err = 0;
++	if (!au_br_writable(br->br_perm)) {
++		h_dir = d_inode(h_root);
++		au_wh_init_ro(h_dir, base, &path);
++	} else if (!au_br_wh_linkable(br->br_perm)) {
++		err = au_wh_init_rw_nolink(h_root, wbr, do_plink, base, &path);
++		if (err > 0)
++			goto out;
++		else if (err)
++			goto out_err;
++	} else {
++		err = au_wh_init_rw(h_root, wbr, do_plink, base, &path);
++		if (err > 0)
++			goto out;
++		else if (err)
++			goto out_err;
++	}
++	goto out; /* success */
++
++out_err:
++	pr_err("an error(%d) on the writable branch %pd(%s)\n",
++	       err, h_root, au_sbtype(h_root->d_sb));
++out:
++	for (i = 0; i < AuBrWh_Last; i++)
++		dput(base[i].dentry);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++/*
++ * whiteouts are all hard-linked usually.
++ * when its link count reaches a ceiling, we create a new whiteout base
++ * asynchronously.
++ */
++
++struct reinit_br_wh {
++	struct super_block *sb;
++	struct au_branch *br;
++};
++
++static void reinit_br_wh(void *arg)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct path h_path;
++	struct reinit_br_wh *a = arg;
++	struct au_wbr *wbr;
++	struct inode *dir, *delegated;
++	struct dentry *h_root;
++	struct au_hinode *hdir;
++
++	err = 0;
++	wbr = a->br->br_wbr;
++	/* big aufs lock */
++	si_noflush_write_lock(a->sb);
++	if (!au_br_writable(a->br->br_perm))
++		goto out;
++	bindex = au_br_index(a->sb, a->br->br_id);
++	if (unlikely(bindex < 0))
++		goto out;
++
++	di_read_lock_parent(a->sb->s_root, AuLock_IR);
++	dir = d_inode(a->sb->s_root);
++	hdir = au_hi(dir, bindex);
++	h_root = au_h_dptr(a->sb->s_root, bindex);
++	AuDebugOn(h_root != au_br_dentry(a->br));
++
++	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
++	wbr_wh_write_lock(wbr);
++	err = au_h_verify(wbr->wbr_whbase, au_opt_udba(a->sb), hdir->hi_inode,
++			  h_root, a->br);
++	if (!err) {
++		h_path.dentry = wbr->wbr_whbase;
++		h_path.mnt = au_br_mnt(a->br);
++		delegated = NULL;
++		err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated,
++				   /*force*/0);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal unlink\n");
++			iput(delegated);
++		}
++	} else {
++		pr_warn("%pd is moved, ignored\n", wbr->wbr_whbase);
++		err = 0;
++	}
++	dput(wbr->wbr_whbase);
++	wbr->wbr_whbase = NULL;
++	if (!err)
++		err = au_wh_init(a->br, a->sb);
++	wbr_wh_write_unlock(wbr);
++	au_hn_inode_unlock(hdir);
++	di_read_unlock(a->sb->s_root, AuLock_IR);
++	if (!err)
++		au_fhsm_wrote(a->sb, bindex, /*force*/0);
++
++out:
++	if (wbr)
++		atomic_dec(&wbr->wbr_wh_running);
++	au_lcnt_dec(&a->br->br_count);
++	si_write_unlock(a->sb);
++	au_nwt_done(&au_sbi(a->sb)->si_nowait);
++	au_kfree_rcu(a);
++	if (unlikely(err))
++		AuIOErr("err %d\n", err);
++}
++
++static void kick_reinit_br_wh(struct super_block *sb, struct au_branch *br)
++{
++	int do_dec, wkq_err;
++	struct reinit_br_wh *arg;
++
++	do_dec = 1;
++	if (atomic_inc_return(&br->br_wbr->wbr_wh_running) != 1)
++		goto out;
++
++	/* ignore ENOMEM */
++	arg = kmalloc(sizeof(*arg), GFP_NOFS);
++	if (arg) {
++		/*
++		 * dec(wh_running), kfree(arg) and dec(br_count)
++		 * in reinit function
++		 */
++		arg->sb = sb;
++		arg->br = br;
++		au_lcnt_inc(&br->br_count);
++		wkq_err = au_wkq_nowait(reinit_br_wh, arg, sb, /*flags*/0);
++		if (unlikely(wkq_err)) {
++			atomic_dec(&br->br_wbr->wbr_wh_running);
++			au_lcnt_dec(&br->br_count);
++			au_kfree_rcu(arg);
++		}
++		do_dec = 0;
++	}
++
++out:
++	if (do_dec)
++		atomic_dec(&br->br_wbr->wbr_wh_running);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * create the whiteout @wh.
++ */
++static int link_or_create_wh(struct super_block *sb, aufs_bindex_t bindex,
++			     struct dentry *wh)
++{
++	int err;
++	struct path h_path = {
++		.dentry = wh
++	};
++	struct au_branch *br;
++	struct au_wbr *wbr;
++	struct dentry *h_parent;
++	struct inode *h_dir, *delegated;
++
++	h_parent = wh->d_parent; /* dir inode is locked */
++	h_dir = d_inode(h_parent);
++	IMustLock(h_dir);
++
++	br = au_sbr(sb, bindex);
++	h_path.mnt = au_br_mnt(br);
++	wbr = br->br_wbr;
++	wbr_wh_read_lock(wbr);
++	if (wbr->wbr_whbase) {
++		delegated = NULL;
++		err = vfsub_link(wbr->wbr_whbase, h_dir, &h_path, &delegated);
++		if (unlikely(err == -EWOULDBLOCK)) {
++			pr_warn("cannot retry for NFSv4 delegation"
++				" for an internal link\n");
++			iput(delegated);
++		}
++		if (!err || err != -EMLINK)
++			goto out;
++
++		/* link count full. re-initialize br_whbase. */
++		kick_reinit_br_wh(sb, br);
++	}
++
++	/* return this error in this context */
++	err = vfsub_create(h_dir, &h_path, WH_MASK, /*want_excl*/true);
++	if (!err)
++		au_fhsm_wrote(sb, bindex, /*force*/0);
++
++out:
++	wbr_wh_read_unlock(wbr);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * create or remove the diropq.
++ */
++static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex,
++				unsigned int flags)
++{
++	struct dentry *opq_dentry, *h_dentry;
++	struct super_block *sb;
++	struct au_branch *br;
++	int err;
++
++	sb = dentry->d_sb;
++	br = au_sbr(sb, bindex);
++	h_dentry = au_h_dptr(dentry, bindex);
++	opq_dentry = vfsub_lkup_one(&diropq_name, h_dentry);
++	if (IS_ERR(opq_dentry))
++		goto out;
++
++	if (au_ftest_diropq(flags, CREATE)) {
++		err = link_or_create_wh(sb, bindex, opq_dentry);
++		if (!err) {
++			au_set_dbdiropq(dentry, bindex);
++			goto out; /* success */
++		}
++	} else {
++		struct path tmp = {
++			.dentry = opq_dentry,
++			.mnt	= au_br_mnt(br)
++		};
++		err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &tmp);
++		if (!err)
++			au_set_dbdiropq(dentry, -1);
++	}
++	dput(opq_dentry);
++	opq_dentry = ERR_PTR(err);
++
++out:
++	return opq_dentry;
++}
++
++struct do_diropq_args {
++	struct dentry **errp;
++	struct dentry *dentry;
++	aufs_bindex_t bindex;
++	unsigned int flags;
++};
++
++static void call_do_diropq(void *args)
++{
++	struct do_diropq_args *a = args;
++	*a->errp = do_diropq(a->dentry, a->bindex, a->flags);
++}
++
++struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
++			     unsigned int flags)
++{
++	struct dentry *diropq, *h_dentry;
++
++	h_dentry = au_h_dptr(dentry, bindex);
++	if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE))
++		diropq = do_diropq(dentry, bindex, flags);
++	else {
++		int wkq_err;
++		struct do_diropq_args args = {
++			.errp		= &diropq,
++			.dentry		= dentry,
++			.bindex		= bindex,
++			.flags		= flags
++		};
++
++		wkq_err = au_wkq_wait(call_do_diropq, &args);
++		if (unlikely(wkq_err))
++			diropq = ERR_PTR(wkq_err);
++	}
++
++	return diropq;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * lookup whiteout dentry.
++ * @h_parent: lower parent dentry which must exist and be locked
++ * @base_name: name of dentry which will be whiteouted
++ * returns dentry for whiteout.
++ */
++struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
++			  struct au_branch *br)
++{
++	int err;
++	struct qstr wh_name;
++	struct dentry *wh_dentry;
++
++	err = au_wh_name_alloc(&wh_name, base_name);
++	wh_dentry = ERR_PTR(err);
++	if (!err) {
++		wh_dentry = vfsub_lkup_one(&wh_name, h_parent);
++		au_kfree_try_rcu(wh_name.name);
++	}
++	return wh_dentry;
++}
++
++/*
++ * link/create a whiteout for @dentry on @bindex.
++ */
++struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
++			    struct dentry *h_parent)
++{
++	struct dentry *wh_dentry;
++	struct super_block *sb;
++	int err;
++
++	sb = dentry->d_sb;
++	wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, au_sbr(sb, bindex));
++	if (!IS_ERR(wh_dentry) && d_is_negative(wh_dentry)) {
++		err = link_or_create_wh(sb, bindex, wh_dentry);
++		if (!err) {
++			au_set_dbwh(dentry, bindex);
++			au_fhsm_wrote(sb, bindex, /*force*/0);
++		} else {
++			dput(wh_dentry);
++			wh_dentry = ERR_PTR(err);
++		}
++	}
++
++	return wh_dentry;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* Delete all whiteouts in this directory on branch bindex. */
++static int del_wh_children(struct dentry *h_dentry, struct au_nhash *whlist,
++			   aufs_bindex_t bindex, struct au_branch *br)
++{
++	int err;
++	unsigned long ul, n;
++	struct qstr wh_name;
++	char *p;
++	struct hlist_head *head;
++	struct au_vdir_wh *pos;
++	struct au_vdir_destr *str;
++
++	err = -ENOMEM;
++	p = (void *)__get_free_page(GFP_NOFS);
++	wh_name.name = p;
++	if (unlikely(!wh_name.name))
++		goto out;
++
++	err = 0;
++	memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
++	p += AUFS_WH_PFX_LEN;
++	n = whlist->nh_num;
++	head = whlist->nh_head;
++	for (ul = 0; !err && ul < n; ul++, head++) {
++		hlist_for_each_entry(pos, head, wh_hash) {
++			if (pos->wh_bindex != bindex)
++				continue;
++
++			str = &pos->wh_str;
++			if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) {
++				memcpy(p, str->name, str->len);
++				wh_name.len = AUFS_WH_PFX_LEN + str->len;
++				err = unlink_wh_name(h_dentry, &wh_name, br);
++				if (!err)
++					continue;
++				break;
++			}
++			AuIOErr("whiteout name too long %.*s\n",
++				str->len, str->name);
++			err = -EIO;
++			break;
++		}
++	}
++	free_page((unsigned long)wh_name.name);
++
++out:
++	return err;
++}
++
++struct del_wh_children_args {
++	int *errp;
++	struct dentry *h_dentry;
++	struct au_nhash *whlist;
++	aufs_bindex_t bindex;
++	struct au_branch *br;
++};
++
++static void call_del_wh_children(void *args)
++{
++	struct del_wh_children_args *a = args;
++	*a->errp = del_wh_children(a->h_dentry, a->whlist, a->bindex, a->br);
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp)
++{
++	struct au_whtmp_rmdir *whtmp;
++	int err;
++	unsigned int rdhash;
++
++	SiMustAnyLock(sb);
++
++	whtmp = kzalloc(sizeof(*whtmp), gfp);
++	if (unlikely(!whtmp)) {
++		whtmp = ERR_PTR(-ENOMEM);
++		goto out;
++	}
++
++	/* no estimation for dir size */
++	rdhash = au_sbi(sb)->si_rdhash;
++	if (!rdhash)
++		rdhash = AUFS_RDHASH_DEF;
++	err = au_nhash_alloc(&whtmp->whlist, rdhash, gfp);
++	if (unlikely(err)) {
++		au_kfree_rcu(whtmp);
++		whtmp = ERR_PTR(err);
++	}
++
++out:
++	return whtmp;
++}
++
++void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp)
++{
++	if (whtmp->br)
++		au_lcnt_dec(&whtmp->br->br_count);
++	dput(whtmp->wh_dentry);
++	iput(whtmp->dir);
++	au_nhash_wh_free(&whtmp->whlist);
++	au_kfree_rcu(whtmp);
++}
++
++/*
++ * rmdir the whiteouted temporary named dir @h_dentry.
++ * @whlist: whiteouted children.
++ */
++int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
++		   struct dentry *wh_dentry, struct au_nhash *whlist)
++{
++	int err;
++	unsigned int h_nlink;
++	struct path h_tmp;
++	struct inode *wh_inode, *h_dir;
++	struct au_branch *br;
++
++	h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
++	IMustLock(h_dir);
++
++	br = au_sbr(dir->i_sb, bindex);
++	wh_inode = d_inode(wh_dentry);
++	inode_lock_nested(wh_inode, AuLsc_I_CHILD);
++
++	/*
++	 * someone else might change some whiteouts while we were sleeping.
++	 * it means this whlist may have an obsoleted entry.
++	 */
++	if (!au_test_h_perm_sio(wh_inode, MAY_EXEC | MAY_WRITE))
++		err = del_wh_children(wh_dentry, whlist, bindex, br);
++	else {
++		int wkq_err;
++		struct del_wh_children_args args = {
++			.errp		= &err,
++			.h_dentry	= wh_dentry,
++			.whlist		= whlist,
++			.bindex		= bindex,
++			.br		= br
++		};
++
++		wkq_err = au_wkq_wait(call_del_wh_children, &args);
++		if (unlikely(wkq_err))
++			err = wkq_err;
++	}
++	inode_unlock(wh_inode);
++
++	if (!err) {
++		h_tmp.dentry = wh_dentry;
++		h_tmp.mnt = au_br_mnt(br);
++		h_nlink = h_dir->i_nlink;
++		err = vfsub_rmdir(h_dir, &h_tmp);
++		/* some fs doesn't change the parent nlink in some cases */
++		h_nlink -= h_dir->i_nlink;
++	}
++
++	if (!err) {
++		if (au_ibtop(dir) == bindex) {
++			/* todo: dir->i_mutex is necessary */
++			au_cpup_attr_timesizes(dir);
++			if (h_nlink)
++				vfsub_drop_nlink(dir);
++		}
++		return 0; /* success */
++	}
++
++	pr_warn("failed removing %pd(%d), ignored\n", wh_dentry, err);
++	return err;
++}
++
++static void call_rmdir_whtmp(void *args)
++{
++	int err;
++	aufs_bindex_t bindex;
++	struct au_whtmp_rmdir *a = args;
++	struct super_block *sb;
++	struct dentry *h_parent;
++	struct inode *h_dir;
++	struct au_hinode *hdir;
++
++	/* rmdir by nfsd may cause deadlock with this i_mutex */
++	/* inode_lock(a->dir); */
++	err = -EROFS;
++	sb = a->dir->i_sb;
++	si_read_lock(sb, !AuLock_FLUSH);
++	if (!au_br_writable(a->br->br_perm))
++		goto out;
++	bindex = au_br_index(sb, a->br->br_id);
++	if (unlikely(bindex < 0))
++		goto out;
++
++	err = -EIO;
++	ii_write_lock_parent(a->dir);
++	h_parent = dget_parent(a->wh_dentry);
++	h_dir = d_inode(h_parent);
++	hdir = au_hi(a->dir, bindex);
++	err = vfsub_mnt_want_write(au_br_mnt(a->br));
++	if (unlikely(err))
++		goto out_mnt;
++	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
++	err = au_h_verify(a->wh_dentry, au_opt_udba(sb), h_dir, h_parent,
++			  a->br);
++	if (!err)
++		err = au_whtmp_rmdir(a->dir, bindex, a->wh_dentry, &a->whlist);
++	au_hn_inode_unlock(hdir);
++	vfsub_mnt_drop_write(au_br_mnt(a->br));
++
++out_mnt:
++	dput(h_parent);
++	ii_write_unlock(a->dir);
++out:
++	/* inode_unlock(a->dir); */
++	au_whtmp_rmdir_free(a);
++	si_read_unlock(sb);
++	au_nwt_done(&au_sbi(sb)->si_nowait);
++	if (unlikely(err))
++		AuIOErr("err %d\n", err);
++}
++
++void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
++			 struct dentry *wh_dentry, struct au_whtmp_rmdir *args)
++{
++	int wkq_err;
++	struct super_block *sb;
++
++	IMustLock(dir);
++
++	/* all post-process will be done in do_rmdir_whtmp(). */
++	sb = dir->i_sb;
++	args->dir = au_igrab(dir);
++	args->br = au_sbr(sb, bindex);
++	au_lcnt_inc(&args->br->br_count);
++	args->wh_dentry = dget(wh_dentry);
++	wkq_err = au_wkq_nowait(call_rmdir_whtmp, args, sb, /*flags*/0);
++	if (unlikely(wkq_err)) {
++		pr_warn("rmdir error %pd (%d), ignored\n", wh_dentry, wkq_err);
++		au_whtmp_rmdir_free(args);
++	}
++}
+diff -Nurp linux-5.4/fs/aufs/whout.h linux-5.4-aufs/fs/aufs/whout.h
+--- linux-5.4/fs/aufs/whout.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/whout.h	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,73 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * whiteout for logical deletion and opaque directory
++ */
++
++#ifndef __AUFS_WHOUT_H__
++#define __AUFS_WHOUT_H__
++
++#ifdef __KERNEL__
++
++#include "dir.h"
++
++/* whout.c */
++int au_wh_name_alloc(struct qstr *wh, const struct qstr *name);
++int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio);
++int au_diropq_test(struct dentry *h_dentry);
++struct au_branch;
++struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
++			     struct qstr *prefix);
++int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br);
++int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
++			struct dentry *dentry);
++int au_wh_init(struct au_branch *br, struct super_block *sb);
++
++/* diropq flags */
++#define AuDiropq_CREATE	1
++#define au_ftest_diropq(flags, name)	((flags) & AuDiropq_##name)
++#define au_fset_diropq(flags, name) \
++	do { (flags) |= AuDiropq_##name; } while (0)
++#define au_fclr_diropq(flags, name) \
++	do { (flags) &= ~AuDiropq_##name; } while (0)
++
++struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
++			     unsigned int flags);
++struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
++			  struct au_branch *br);
++struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
++			    struct dentry *h_parent);
++
++/* real rmdir for the whiteout-ed dir */
++struct au_whtmp_rmdir {
++	struct inode *dir;
++	struct au_branch *br;
++	struct dentry *wh_dentry;
++	struct au_nhash whlist;
++};
++
++struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp);
++void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp);
++int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
++		   struct dentry *wh_dentry, struct au_nhash *whlist);
++void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
++			 struct dentry *wh_dentry, struct au_whtmp_rmdir *args);
++
++/* ---------------------------------------------------------------------- */
++
++static inline struct dentry *au_diropq_create(struct dentry *dentry,
++					      aufs_bindex_t bindex)
++{
++	return au_diropq_sio(dentry, bindex, AuDiropq_CREATE);
++}
++
++static inline int au_diropq_remove(struct dentry *dentry, aufs_bindex_t bindex)
++{
++	return PTR_ERR(au_diropq_sio(dentry, bindex, !AuDiropq_CREATE));
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_WHOUT_H__ */
+diff -Nurp linux-5.4/fs/aufs/wkq.c linux-5.4-aufs/fs/aufs/wkq.c
+--- linux-5.4/fs/aufs/wkq.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/wkq.c	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,379 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * workqueue for asynchronous/super-io operations
++ * todo: try new credential scheme
++ */
++
++#include <linux/module.h>
++#include "aufs.h"
++
++/* internal workqueue named AUFS_WKQ_NAME */
++
++static struct workqueue_struct *au_wkq;
++
++struct au_wkinfo {
++	struct work_struct wk;
++	struct kobject *kobj;
++
++	unsigned int flags; /* see wkq.h */
++
++	au_wkq_func_t func;
++	void *args;
++
++#ifdef CONFIG_LOCKDEP
++	int dont_check;
++	struct held_lock **hlock;
++#endif
++
++	struct completion *comp;
++};
++
++/* ---------------------------------------------------------------------- */
++/*
++ * Aufs passes some operations to the workqueue such as the internal copyup.
++ * This scheme looks rather unnatural for LOCKDEP debugging feature, since the
++ * job run by workqueue depends upon the locks acquired in the other task.
++ * Delegating a small operation to the workqueue, aufs passes its lockdep
++ * information too. And the job in the workqueue restores the info in order to
++ * pretend as if it acquired those locks. This is just to make LOCKDEP work
++ * correctly and expectedly.
++ */
++
++#ifndef CONFIG_LOCKDEP
++AuStubInt0(au_wkq_lockdep_alloc, struct au_wkinfo *wkinfo);
++AuStubVoid(au_wkq_lockdep_free, struct au_wkinfo *wkinfo);
++AuStubVoid(au_wkq_lockdep_pre, struct au_wkinfo *wkinfo);
++AuStubVoid(au_wkq_lockdep_post, struct au_wkinfo *wkinfo);
++AuStubVoid(au_wkq_lockdep_init, struct au_wkinfo *wkinfo);
++#else
++static void au_wkq_lockdep_init(struct au_wkinfo *wkinfo)
++{
++	wkinfo->hlock = NULL;
++	wkinfo->dont_check = 0;
++}
++
++/*
++ * 1: matched
++ * 0: unmatched
++ */
++static int au_wkq_lockdep_test(struct lock_class_key *key, const char *name)
++{
++	static DEFINE_SPINLOCK(spin);
++	static struct {
++		char *name;
++		struct lock_class_key *key;
++	} a[] = {
++		{ .name = "&sbinfo->si_rwsem" },
++		{ .name = "&finfo->fi_rwsem" },
++		{ .name = "&dinfo->di_rwsem" },
++		{ .name = "&iinfo->ii_rwsem" }
++	};
++	static int set;
++	int i;
++
++	/* lockless read from 'set.' see below */
++	if (set == ARRAY_SIZE(a)) {
++		for (i = 0; i < ARRAY_SIZE(a); i++)
++			if (a[i].key == key)
++				goto match;
++		goto unmatch;
++	}
++
++	spin_lock(&spin);
++	if (set)
++		for (i = 0; i < ARRAY_SIZE(a); i++)
++			if (a[i].key == key) {
++				spin_unlock(&spin);
++				goto match;
++			}
++	for (i = 0; i < ARRAY_SIZE(a); i++) {
++		if (a[i].key) {
++			if (unlikely(a[i].key == key)) { /* rare but possible */
++				spin_unlock(&spin);
++				goto match;
++			} else
++				continue;
++		}
++		if (strstr(a[i].name, name)) {
++			/*
++			 * the order of these three lines is important for the
++			 * lockless read above.
++			 */
++			a[i].key = key;
++			spin_unlock(&spin);
++			set++;
++			/* AuDbg("%d, %s\n", set, name); */
++			goto match;
++		}
++	}
++	spin_unlock(&spin);
++	goto unmatch;
++
++match:
++	return 1;
++unmatch:
++	return 0;
++}
++
++static int au_wkq_lockdep_alloc(struct au_wkinfo *wkinfo)
++{
++	int err, n;
++	struct task_struct *curr;
++	struct held_lock **hl, *held_locks, *p;
++
++	err = 0;
++	curr = current;
++	wkinfo->dont_check = lockdep_recursing(curr);
++	if (wkinfo->dont_check)
++		goto out;
++	n = curr->lockdep_depth;
++	if (!n)
++		goto out;
++
++	err = -ENOMEM;
++	wkinfo->hlock = kmalloc_array(n + 1, sizeof(*wkinfo->hlock), GFP_NOFS);
++	if (unlikely(!wkinfo->hlock))
++		goto out;
++
++	err = 0;
++#if 0
++	if (0 && au_debug_test()) /* left for debugging */
++		lockdep_print_held_locks(curr);
++#endif
++	held_locks = curr->held_locks;
++	hl = wkinfo->hlock;
++	while (n--) {
++		p = held_locks++;
++		if (au_wkq_lockdep_test(p->instance->key, p->instance->name))
++			*hl++ = p;
++	}
++	*hl = NULL;
++
++out:
++	return err;
++}
++
++static void au_wkq_lockdep_free(struct au_wkinfo *wkinfo)
++{
++	au_kfree_try_rcu(wkinfo->hlock);
++}
++
++static void au_wkq_lockdep_pre(struct au_wkinfo *wkinfo)
++{
++	struct held_lock *p, **hl = wkinfo->hlock;
++	int subclass;
++
++	if (wkinfo->dont_check)
++		lockdep_off();
++	if (!hl)
++		return;
++	while ((p = *hl++)) { /* assignment */
++		subclass = lockdep_hlock_class(p)->subclass;
++		/* AuDbg("%s, %d\n", p->instance->name, subclass); */
++		if (p->read)
++			rwsem_acquire_read(p->instance, subclass, 0,
++					   /*p->acquire_ip*/_RET_IP_);
++		else
++			rwsem_acquire(p->instance, subclass, 0,
++				      /*p->acquire_ip*/_RET_IP_);
++	}
++}
++
++static void au_wkq_lockdep_post(struct au_wkinfo *wkinfo)
++{
++	struct held_lock *p, **hl = wkinfo->hlock;
++
++	if (wkinfo->dont_check)
++		lockdep_on();
++	if (!hl)
++		return;
++	while ((p = *hl++)) /* assignment */
++		rwsem_release(p->instance, 0, /*p->acquire_ip*/_RET_IP_);
++}
++#endif
++
++static void wkq_func(struct work_struct *wk)
++{
++	struct au_wkinfo *wkinfo = container_of(wk, struct au_wkinfo, wk);
++
++	AuDebugOn(!uid_eq(current_fsuid(), GLOBAL_ROOT_UID));
++	AuDebugOn(rlimit(RLIMIT_FSIZE) != RLIM_INFINITY);
++
++	au_wkq_lockdep_pre(wkinfo);
++	wkinfo->func(wkinfo->args);
++	au_wkq_lockdep_post(wkinfo);
++	if (au_ftest_wkq(wkinfo->flags, WAIT))
++		complete(wkinfo->comp);
++	else {
++		kobject_put(wkinfo->kobj);
++		module_put(THIS_MODULE); /* todo: ?? */
++		au_kfree_rcu(wkinfo);
++	}
++}
++
++/*
++ * Since struct completion is large, try allocating it dynamically.
++ */
++#if 1 /* defined(CONFIG_4KSTACKS) || defined(AuTest4KSTACKS) */
++#define AuWkqCompDeclare(name)	struct completion *comp = NULL
++
++static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp)
++{
++	*comp = kmalloc(sizeof(**comp), GFP_NOFS);
++	if (*comp) {
++		init_completion(*comp);
++		wkinfo->comp = *comp;
++		return 0;
++	}
++	return -ENOMEM;
++}
++
++static void au_wkq_comp_free(struct completion *comp)
++{
++	au_kfree_rcu(comp);
++}
++
++#else
++
++/* no braces */
++#define AuWkqCompDeclare(name) \
++	DECLARE_COMPLETION_ONSTACK(_ ## name); \
++	struct completion *comp = &_ ## name
++
++static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp)
++{
++	wkinfo->comp = *comp;
++	return 0;
++}
++
++static void au_wkq_comp_free(struct completion *comp __maybe_unused)
++{
++	/* empty */
++}
++#endif /* 4KSTACKS */
++
++static void au_wkq_run(struct au_wkinfo *wkinfo)
++{
++	if (au_ftest_wkq(wkinfo->flags, NEST)) {
++		if (au_wkq_test()) {
++			AuWarn1("wkq from wkq, unless silly-rename on NFS,"
++				" due to a dead dir by UDBA,"
++				" or async xino write?\n");
++			AuDebugOn(au_ftest_wkq(wkinfo->flags, WAIT));
++		}
++	} else
++		au_dbg_verify_kthread();
++
++	if (au_ftest_wkq(wkinfo->flags, WAIT)) {
++		INIT_WORK_ONSTACK(&wkinfo->wk, wkq_func);
++		queue_work(au_wkq, &wkinfo->wk);
++	} else {
++		INIT_WORK(&wkinfo->wk, wkq_func);
++		schedule_work(&wkinfo->wk);
++	}
++}
++
++/*
++ * Be careful. It is easy to make deadlock happen.
++ * processA: lock, wkq and wait
++ * processB: wkq and wait, lock in wkq
++ * --> deadlock
++ */
++int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args)
++{
++	int err;
++	AuWkqCompDeclare(comp);
++	struct au_wkinfo wkinfo = {
++		.flags	= flags,
++		.func	= func,
++		.args	= args
++	};
++
++	err = au_wkq_comp_alloc(&wkinfo, &comp);
++	if (unlikely(err))
++		goto out;
++	err = au_wkq_lockdep_alloc(&wkinfo);
++	if (unlikely(err))
++		goto out_comp;
++	if (!err) {
++		au_wkq_run(&wkinfo);
++		/* no timeout, no interrupt */
++		wait_for_completion(wkinfo.comp);
++	}
++	au_wkq_lockdep_free(&wkinfo);
++
++out_comp:
++	au_wkq_comp_free(comp);
++out:
++	destroy_work_on_stack(&wkinfo.wk);
++	return err;
++}
++
++/*
++ * Note: dget/dput() in func for aufs dentries are not supported. It will be a
++ * problem in a concurrent umounting.
++ */
++int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
++		  unsigned int flags)
++{
++	int err;
++	struct au_wkinfo *wkinfo;
++
++	atomic_inc(&au_sbi(sb)->si_nowait.nw_len);
++
++	/*
++	 * wkq_func() must free this wkinfo.
++	 * it highly depends upon the implementation of workqueue.
++	 */
++	err = 0;
++	wkinfo = kmalloc(sizeof(*wkinfo), GFP_NOFS);
++	if (wkinfo) {
++		wkinfo->kobj = &au_sbi(sb)->si_kobj;
++		wkinfo->flags = flags & ~AuWkq_WAIT;
++		wkinfo->func = func;
++		wkinfo->args = args;
++		wkinfo->comp = NULL;
++		au_wkq_lockdep_init(wkinfo);
++		kobject_get(wkinfo->kobj);
++		__module_get(THIS_MODULE); /* todo: ?? */
++
++		au_wkq_run(wkinfo);
++	} else {
++		err = -ENOMEM;
++		au_nwt_done(&au_sbi(sb)->si_nowait);
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++void au_nwt_init(struct au_nowait_tasks *nwt)
++{
++	atomic_set(&nwt->nw_len, 0);
++	/* smp_mb(); */ /* atomic_set */
++	init_waitqueue_head(&nwt->nw_wq);
++}
++
++void au_wkq_fin(void)
++{
++	destroy_workqueue(au_wkq);
++}
++
++int __init au_wkq_init(void)
++{
++	int err;
++
++	err = 0;
++	au_wkq = alloc_workqueue(AUFS_WKQ_NAME, 0, WQ_DFL_ACTIVE);
++	if (IS_ERR(au_wkq))
++		err = PTR_ERR(au_wkq);
++	else if (!au_wkq)
++		err = -ENOMEM;
++
++	return err;
++}
+diff -Nurp linux-5.4/fs/aufs/wkq.h linux-5.4-aufs/fs/aufs/wkq.h
+--- linux-5.4/fs/aufs/wkq.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/wkq.h	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,76 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * workqueue for asynchronous/super-io operations
++ * todo: try new credentials management scheme
++ */
++
++#ifndef __AUFS_WKQ_H__
++#define __AUFS_WKQ_H__
++
++#ifdef __KERNEL__
++
++#include <linux/wait.h>
++
++struct super_block;
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * in the next operation, wait for the 'nowait' tasks in system-wide workqueue
++ */
++struct au_nowait_tasks {
++	atomic_t		nw_len;
++	wait_queue_head_t	nw_wq;
++};
++
++/* ---------------------------------------------------------------------- */
++
++typedef void (*au_wkq_func_t)(void *args);
++
++/* wkq flags */
++#define AuWkq_WAIT	1
++#define AuWkq_NEST	(1 << 1)
++#define au_ftest_wkq(flags, name)	((flags) & AuWkq_##name)
++#define au_fset_wkq(flags, name) \
++	do { (flags) |= AuWkq_##name; } while (0)
++#define au_fclr_wkq(flags, name) \
++	do { (flags) &= ~AuWkq_##name; } while (0)
++
++/* wkq.c */
++int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args);
++int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
++		  unsigned int flags);
++void au_nwt_init(struct au_nowait_tasks *nwt);
++int __init au_wkq_init(void);
++void au_wkq_fin(void);
++
++/* ---------------------------------------------------------------------- */
++
++static inline int au_wkq_test(void)
++{
++	return current->flags & PF_WQ_WORKER;
++}
++
++static inline int au_wkq_wait(au_wkq_func_t func, void *args)
++{
++	return au_wkq_do_wait(AuWkq_WAIT, func, args);
++}
++
++static inline void au_nwt_done(struct au_nowait_tasks *nwt)
++{
++	if (atomic_dec_and_test(&nwt->nw_len))
++		wake_up_all(&nwt->nw_wq);
++}
++
++static inline int au_nwt_flush(struct au_nowait_tasks *nwt)
++{
++	wait_event(nwt->nw_wq, !atomic_read(&nwt->nw_len));
++	return 0;
++}
++
++#endif /* __KERNEL__ */
++#endif /* __AUFS_WKQ_H__ */
+diff -Nurp linux-5.4/fs/aufs/xattr.c linux-5.4-aufs/fs/aufs/xattr.c
+--- linux-5.4/fs/aufs/xattr.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/xattr.c	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,343 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2014-2019 Junjiro R. Okajima
++ */
++
++/*
++ * handling xattr functions
++ */
++
++#include <linux/fs.h>
++#include <linux/posix_acl_xattr.h>
++#include <linux/xattr.h>
++#include "aufs.h"
++
++static int au_xattr_ignore(int err, char *name, unsigned int ignore_flags)
++{
++	if (!ignore_flags)
++		goto out;
++	switch (err) {
++	case -ENOMEM:
++	case -EDQUOT:
++		goto out;
++	}
++
++	if ((ignore_flags & AuBrAttr_ICEX) == AuBrAttr_ICEX) {
++		err = 0;
++		goto out;
++	}
++
++#define cmp(brattr, prefix) do {					\
++		if (!strncmp(name, XATTR_##prefix##_PREFIX,		\
++			     XATTR_##prefix##_PREFIX_LEN)) {		\
++			if (ignore_flags & AuBrAttr_ICEX_##brattr)	\
++				err = 0;				\
++			goto out;					\
++		}							\
++	} while (0)
++
++	cmp(SEC, SECURITY);
++	cmp(SYS, SYSTEM);
++	cmp(TR, TRUSTED);
++	cmp(USR, USER);
++#undef cmp
++
++	if (ignore_flags & AuBrAttr_ICEX_OTH)
++		err = 0;
++
++out:
++	return err;
++}
++
++static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1;
++
++static int au_do_cpup_xattr(struct dentry *h_dst, struct dentry *h_src,
++			    char *name, char **buf, unsigned int ignore_flags,
++			    unsigned int verbose)
++{
++	int err;
++	ssize_t ssz;
++	struct inode *h_idst;
++
++	ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS);
++	err = ssz;
++	if (unlikely(err <= 0)) {
++		if (err == -ENODATA
++		    || (err == -EOPNOTSUPP
++			&& ((ignore_flags & au_xattr_out_of_list)
++			    || (au_test_nfs_noacl(d_inode(h_src))
++				&& (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS)
++				    || !strcmp(name,
++					       XATTR_NAME_POSIX_ACL_DEFAULT))))
++			    ))
++			err = 0;
++		if (err && (verbose || au_debug_test()))
++			pr_err("%s, err %d\n", name, err);
++		goto out;
++	}
++
++	/* unlock it temporary */
++	h_idst = d_inode(h_dst);
++	inode_unlock(h_idst);
++	err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0);
++	inode_lock_nested(h_idst, AuLsc_I_CHILD2);
++	if (unlikely(err)) {
++		if (verbose || au_debug_test())
++			pr_err("%s, err %d\n", name, err);
++		err = au_xattr_ignore(err, name, ignore_flags);
++	}
++
++out:
++	return err;
++}
++
++int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
++		  unsigned int verbose)
++{
++	int err, unlocked, acl_access, acl_default;
++	ssize_t ssz;
++	struct inode *h_isrc, *h_idst;
++	char *value, *p, *o, *e;
++
++	/* try stopping to update the source inode while we are referencing */
++	/* there should not be the parent-child relationship between them */
++	h_isrc = d_inode(h_src);
++	h_idst = d_inode(h_dst);
++	inode_unlock(h_idst);
++	inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD);
++	inode_lock_nested(h_idst, AuLsc_I_CHILD2);
++	unlocked = 0;
++
++	/* some filesystems don't list POSIX ACL, for example tmpfs */
++	ssz = vfs_listxattr(h_src, NULL, 0);
++	err = ssz;
++	if (unlikely(err < 0)) {
++		AuTraceErr(err);
++		if (err == -ENODATA
++		    || err == -EOPNOTSUPP)
++			err = 0;	/* ignore */
++		goto out;
++	}
++
++	err = 0;
++	p = NULL;
++	o = NULL;
++	if (ssz) {
++		err = -ENOMEM;
++		p = kmalloc(ssz, GFP_NOFS);
++		o = p;
++		if (unlikely(!p))
++			goto out;
++		err = vfs_listxattr(h_src, p, ssz);
++	}
++	inode_unlock_shared(h_isrc);
++	unlocked = 1;
++	AuDbg("err %d, ssz %zd\n", err, ssz);
++	if (unlikely(err < 0))
++		goto out_free;
++
++	err = 0;
++	e = p + ssz;
++	value = NULL;
++	acl_access = 0;
++	acl_default = 0;
++	while (!err && p < e) {
++		acl_access |= !strncmp(p, XATTR_NAME_POSIX_ACL_ACCESS,
++				       sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1);
++		acl_default |= !strncmp(p, XATTR_NAME_POSIX_ACL_DEFAULT,
++					sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)
++					- 1);
++		err = au_do_cpup_xattr(h_dst, h_src, p, &value, ignore_flags,
++				       verbose);
++		p += strlen(p) + 1;
++	}
++	AuTraceErr(err);
++	ignore_flags |= au_xattr_out_of_list;
++	if (!err && !acl_access) {
++		err = au_do_cpup_xattr(h_dst, h_src,
++				       XATTR_NAME_POSIX_ACL_ACCESS, &value,
++				       ignore_flags, verbose);
++		AuTraceErr(err);
++	}
++	if (!err && !acl_default) {
++		err = au_do_cpup_xattr(h_dst, h_src,
++				       XATTR_NAME_POSIX_ACL_DEFAULT, &value,
++				       ignore_flags, verbose);
++		AuTraceErr(err);
++	}
++
++	au_kfree_try_rcu(value);
++
++out_free:
++	au_kfree_try_rcu(o);
++out:
++	if (!unlocked)
++		inode_unlock_shared(h_isrc);
++	AuTraceErr(err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_smack_reentering(struct super_block *sb)
++{
++#if IS_ENABLED(CONFIG_SECURITY_SMACK)
++	/*
++	 * as a part of lookup, smack_d_instantiate() is called, and it calls
++	 * i_op->getxattr(). ouch.
++	 */
++	return si_pid_test(sb);
++#else
++	return 0;
++#endif
++}
++
++enum {
++	AU_XATTR_LIST,
++	AU_XATTR_GET
++};
++
++struct au_lgxattr {
++	int type;
++	union {
++		struct {
++			char	*list;
++			size_t	size;
++		} list;
++		struct {
++			const char	*name;
++			void		*value;
++			size_t		size;
++		} get;
++	} u;
++};
++
++static ssize_t au_lgxattr(struct dentry *dentry, struct au_lgxattr *arg)
++{
++	ssize_t err;
++	int reenter;
++	struct path h_path;
++	struct super_block *sb;
++
++	sb = dentry->d_sb;
++	reenter = au_smack_reentering(sb);
++	if (!reenter) {
++		err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
++		if (unlikely(err))
++			goto out;
++	}
++	err = au_h_path_getattr(dentry, /*force*/1, &h_path, reenter);
++	if (unlikely(err))
++		goto out_si;
++	if (unlikely(!h_path.dentry))
++		/* illegally overlapped or something */
++		goto out_di; /* pretending success */
++
++	/* always topmost entry only */
++	switch (arg->type) {
++	case AU_XATTR_LIST:
++		err = vfs_listxattr(h_path.dentry,
++				    arg->u.list.list, arg->u.list.size);
++		break;
++	case AU_XATTR_GET:
++		AuDebugOn(d_is_negative(h_path.dentry));
++		err = vfs_getxattr(h_path.dentry,
++				   arg->u.get.name, arg->u.get.value,
++				   arg->u.get.size);
++		break;
++	}
++
++out_di:
++	if (!reenter)
++		di_read_unlock(dentry, AuLock_IR);
++out_si:
++	if (!reenter)
++		si_read_unlock(sb);
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size)
++{
++	struct au_lgxattr arg = {
++		.type = AU_XATTR_LIST,
++		.u.list = {
++			.list	= list,
++			.size	= size
++		},
++	};
++
++	return au_lgxattr(dentry, &arg);
++}
++
++static ssize_t au_getxattr(struct dentry *dentry,
++			   struct inode *inode __maybe_unused,
++			   const char *name, void *value, size_t size)
++{
++	struct au_lgxattr arg = {
++		.type = AU_XATTR_GET,
++		.u.get = {
++			.name	= name,
++			.value	= value,
++			.size	= size
++		},
++	};
++
++	return au_lgxattr(dentry, &arg);
++}
++
++static int au_setxattr(struct dentry *dentry, struct inode *inode,
++		       const char *name, const void *value, size_t size,
++		       int flags)
++{
++	struct au_sxattr arg = {
++		.type = AU_XATTR_SET,
++		.u.set = {
++			.name	= name,
++			.value	= value,
++			.size	= size,
++			.flags	= flags
++		},
++	};
++
++	return au_sxattr(dentry, inode, &arg);
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_xattr_get(const struct xattr_handler *handler,
++			struct dentry *dentry, struct inode *inode,
++			const char *name, void *buffer, size_t size)
++{
++	return au_getxattr(dentry, inode, name, buffer, size);
++}
++
++static int au_xattr_set(const struct xattr_handler *handler,
++			struct dentry *dentry, struct inode *inode,
++			const char *name, const void *value, size_t size,
++			int flags)
++{
++	return au_setxattr(dentry, inode, name, value, size, flags);
++}
++
++static const struct xattr_handler au_xattr_handler = {
++	.name	= "",
++	.prefix	= "",
++	.get	= au_xattr_get,
++	.set	= au_xattr_set
++};
++
++static const struct xattr_handler *au_xattr_handlers[] = {
++#ifdef CONFIG_FS_POSIX_ACL
++	&posix_acl_access_xattr_handler,
++	&posix_acl_default_xattr_handler,
++#endif
++	&au_xattr_handler, /* must be last */
++	NULL
++};
++
++void au_xattr_init(struct super_block *sb)
++{
++	sb->s_xattr = au_xattr_handlers;
++}
+diff -Nurp linux-5.4/fs/aufs/xino.c linux-5.4-aufs/fs/aufs/xino.c
+--- linux-5.4/fs/aufs/xino.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/fs/aufs/xino.c	2019-11-28 01:25:59.069925618 +0200
+@@ -0,0 +1,1952 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++/*
++ * external inode number translation table and bitmap
++ *
++ * things to consider
++ * - the lifetime
++ *   + au_xino object
++ *   + XINO files (xino, xib, xigen)
++ *   + dynamic debugfs entries (xiN)
++ *   + static debugfs entries (xib, xigen)
++ *   + static sysfs entry (xi_path)
++ * - several entry points to handle them.
++ *   + mount(2) without xino option (default)
++ *   + mount(2) with xino option
++ *   + mount(2) with noxino option
++ *   + umount(2)
++ *   + remount with add/del branches
++ *   + remount with xino/noxino options
++ */
++
++#include <linux/seq_file.h>
++#include <linux/statfs.h>
++#include "aufs.h"
++
++static aufs_bindex_t sbr_find_shared(struct super_block *sb, aufs_bindex_t btop,
++				     aufs_bindex_t bbot,
++				     struct super_block *h_sb)
++{
++	/* todo: try binary-search if the branches are many */
++	for (; btop <= bbot; btop++)
++		if (h_sb == au_sbr_sb(sb, btop))
++			return btop;
++	return -1;
++}
++
++/*
++ * find another branch who is on the same filesystem of the specified
++ * branch{@btgt}. search until @bbot.
++ */
++static aufs_bindex_t is_sb_shared(struct super_block *sb, aufs_bindex_t btgt,
++				  aufs_bindex_t bbot)
++{
++	aufs_bindex_t bindex;
++	struct super_block *tgt_sb;
++
++	tgt_sb = au_sbr_sb(sb, btgt);
++	bindex = sbr_find_shared(sb, /*btop*/0, btgt - 1, tgt_sb);
++	if (bindex < 0)
++		bindex = sbr_find_shared(sb, btgt + 1, bbot, tgt_sb);
++
++	return bindex;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * stop unnecessary notify events at creating xino files
++ */
++
++aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry)
++{
++	aufs_bindex_t bfound, bindex, bbot;
++	struct dentry *parent;
++	struct au_branch *br;
++
++	bfound = -1;
++	parent = dentry->d_parent; /* safe d_parent access */
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_dentry(br) == parent) {
++			bfound = bindex;
++			break;
++		}
++	}
++
++	AuDbg("bfound b%d\n", bfound);
++	return bfound;
++}
++
++struct au_xino_lock_dir {
++	struct au_hinode *hdir;
++	struct dentry *parent;
++	struct inode *dir;
++};
++
++static struct dentry *au_dget_parent_lock(struct dentry *dentry,
++					  unsigned int lsc)
++{
++	struct dentry *parent;
++	struct inode *dir;
++
++	parent = dget_parent(dentry);
++	dir = d_inode(parent);
++	inode_lock_nested(dir, lsc);
++#if 0 /* it should not happen */
++	spin_lock(&dentry->d_lock);
++	if (unlikely(dentry->d_parent != parent)) {
++		spin_unlock(&dentry->d_lock);
++		inode_unlock(dir);
++		dput(parent);
++		parent = NULL;
++		goto out;
++	}
++	spin_unlock(&dentry->d_lock);
++
++out:
++#endif
++	return parent;
++}
++
++static void au_xino_lock_dir(struct super_block *sb, struct path *xipath,
++			     struct au_xino_lock_dir *ldir)
++{
++	aufs_bindex_t bindex;
++
++	ldir->hdir = NULL;
++	bindex = au_xi_root(sb, xipath->dentry);
++	if (bindex >= 0) {
++		/* rw branch root */
++		ldir->hdir = au_hi(d_inode(sb->s_root), bindex);
++		au_hn_inode_lock_nested(ldir->hdir, AuLsc_I_PARENT);
++	} else {
++		/* other */
++		ldir->parent = au_dget_parent_lock(xipath->dentry,
++						   AuLsc_I_PARENT);
++		ldir->dir = d_inode(ldir->parent);
++	}
++}
++
++static void au_xino_unlock_dir(struct au_xino_lock_dir *ldir)
++{
++	if (ldir->hdir)
++		au_hn_inode_unlock(ldir->hdir);
++	else {
++		inode_unlock(ldir->dir);
++		dput(ldir->parent);
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * create and set a new xino file
++ */
++struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
++			    int wbrtop)
++{
++	struct file *file;
++	struct dentry *h_parent, *d;
++	struct inode *h_dir, *inode;
++	int err;
++	static DEFINE_MUTEX(mtx);
++
++	/*
++	 * at mount-time, and the xino file is the default path,
++	 * hnotify is disabled so we have no notify events to ignore.
++	 * when a user specified the xino, we cannot get au_hdir to be ignored.
++	 */
++	if (!wbrtop)
++		mutex_lock(&mtx);
++	file = vfsub_filp_open(fpath, O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
++			       /* | __FMODE_NONOTIFY */,
++			       0666);
++	if (IS_ERR(file)) {
++		if (!wbrtop)
++			mutex_unlock(&mtx);
++		if (!silent)
++			pr_err("open %s(%ld)\n", fpath, PTR_ERR(file));
++		return file;
++	}
++
++	/* keep file count */
++	err = 0;
++	d = file->f_path.dentry;
++	h_parent = au_dget_parent_lock(d, AuLsc_I_PARENT);
++	if (!wbrtop)
++		mutex_unlock(&mtx);
++	/* mnt_want_write() is unnecessary here */
++	h_dir = d_inode(h_parent);
++	inode = file_inode(file);
++	/* no delegation since it is just created */
++	if (inode->i_nlink)
++		err = vfsub_unlink(h_dir, &file->f_path, /*delegated*/NULL,
++				   /*force*/0);
++	inode_unlock(h_dir);
++	dput(h_parent);
++	if (unlikely(err)) {
++		if (!silent)
++			pr_err("unlink %s(%d)\n", fpath, err);
++		goto out;
++	}
++
++	err = -EINVAL;
++	if (unlikely(sb == d->d_sb)) {
++		if (!silent)
++			pr_err("%s must be outside\n", fpath);
++		goto out;
++	}
++	if (unlikely(au_test_fs_bad_xino(d->d_sb))) {
++		if (!silent)
++			pr_err("xino doesn't support %s(%s)\n",
++			       fpath, au_sbtype(d->d_sb));
++		goto out;
++	}
++	return file; /* success */
++
++out:
++	fput(file);
++	file = ERR_PTR(err);
++	return file;
++}
++
++/*
++ * create a new xinofile at the same place/path as @base.
++ */
++struct file *au_xino_create2(struct super_block *sb, struct path *base,
++			     struct file *copy_src)
++{
++	struct file *file;
++	struct dentry *dentry, *parent;
++	struct inode *dir, *delegated;
++	struct qstr *name;
++	struct path path;
++	int err, do_unlock;
++	struct au_xino_lock_dir ldir;
++
++	do_unlock = 1;
++	au_xino_lock_dir(sb, base, &ldir);
++	dentry = base->dentry;
++	parent = dentry->d_parent; /* dir inode is locked */
++	dir = d_inode(parent);
++	IMustLock(dir);
++
++	name = &dentry->d_name;
++	path.dentry = vfsub_lookup_one_len(name->name, parent, name->len);
++	if (IS_ERR(path.dentry)) {
++		file = (void *)path.dentry;
++		pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry));
++		goto out;
++	}
++
++	/* no need to mnt_want_write() since we call dentry_open() later */
++	err = vfs_create(dir, path.dentry, 0666, NULL);
++	if (unlikely(err)) {
++		file = ERR_PTR(err);
++		pr_err("%pd create err %d\n", dentry, err);
++		goto out_dput;
++	}
++
++	path.mnt = base->mnt;
++	file = vfsub_dentry_open(&path,
++				 O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
++				 /* | __FMODE_NONOTIFY */);
++	if (IS_ERR(file)) {
++		pr_err("%pd open err %ld\n", dentry, PTR_ERR(file));
++		goto out_dput;
++	}
++
++	delegated = NULL;
++	err = vfsub_unlink(dir, &file->f_path, &delegated, /*force*/0);
++	au_xino_unlock_dir(&ldir);
++	do_unlock = 0;
++	if (unlikely(err == -EWOULDBLOCK)) {
++		pr_warn("cannot retry for NFSv4 delegation"
++			" for an internal unlink\n");
++		iput(delegated);
++	}
++	if (unlikely(err)) {
++		pr_err("%pd unlink err %d\n", dentry, err);
++		goto out_fput;
++	}
++
++	if (copy_src) {
++		/* no one can touch copy_src xino */
++		err = au_copy_file(file, copy_src, vfsub_f_size_read(copy_src));
++		if (unlikely(err)) {
++			pr_err("%pd copy err %d\n", dentry, err);
++			goto out_fput;
++		}
++	}
++	goto out_dput; /* success */
++
++out_fput:
++	fput(file);
++	file = ERR_PTR(err);
++out_dput:
++	dput(path.dentry);
++out:
++	if (do_unlock)
++		au_xino_unlock_dir(&ldir);
++	return file;
++}
++
++struct file *au_xino_file1(struct au_xino *xi)
++{
++	struct file *file;
++	unsigned int u, nfile;
++
++	file = NULL;
++	nfile = xi->xi_nfile;
++	for (u = 0; u < nfile; u++) {
++		file = xi->xi_file[u];
++		if (file)
++			break;
++	}
++
++	return file;
++}
++
++static int au_xino_file_set(struct au_xino *xi, int idx, struct file *file)
++{
++	int err;
++	struct file *f;
++	void *p;
++
++	if (file)
++		get_file(file);
++
++	err = 0;
++	f = NULL;
++	if (idx < xi->xi_nfile) {
++		f = xi->xi_file[idx];
++		if (f)
++			fput(f);
++	} else {
++		p = au_kzrealloc(xi->xi_file,
++				 sizeof(*xi->xi_file) * xi->xi_nfile,
++				 sizeof(*xi->xi_file) * (idx + 1),
++				 GFP_NOFS, /*may_shrink*/0);
++		if (p) {
++			MtxMustLock(&xi->xi_mtx);
++			xi->xi_file = p;
++			xi->xi_nfile = idx + 1;
++		} else {
++			err = -ENOMEM;
++			if (file)
++				fput(file);
++			goto out;
++		}
++	}
++	xi->xi_file[idx] = file;
++
++out:
++	return err;
++}
++
++/*
++ * if @xinew->xi is not set, then create new xigen file.
++ */
++struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew)
++{
++	struct file *file;
++	int err;
++
++	SiMustAnyLock(sb);
++
++	file = au_xino_create2(sb, xinew->base, xinew->copy_src);
++	if (IS_ERR(file)) {
++		err = PTR_ERR(file);
++		pr_err("%s[%d], err %d\n",
++		       xinew->xi ? "xino" : "xigen",
++		       xinew->idx, err);
++		goto out;
++	}
++
++	if (xinew->xi)
++		err = au_xino_file_set(xinew->xi, xinew->idx, file);
++	else {
++		BUG();
++		/* todo: make xigen file an array */
++		/* err = au_xigen_file_set(sb, xinew->idx, file); */
++	}
++	fput(file);
++	if (unlikely(err))
++		file = ERR_PTR(err);
++
++out:
++	return file;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * truncate xino files
++ */
++static int au_xino_do_trunc(struct super_block *sb, aufs_bindex_t bindex,
++			    int idx, struct kstatfs *st)
++{
++	int err;
++	blkcnt_t blocks;
++	struct file *file, *new_xino;
++	struct au_xi_new xinew = {
++		.idx = idx
++	};
++
++	err = 0;
++	xinew.xi = au_sbr(sb, bindex)->br_xino;
++	file = au_xino_file(xinew.xi, idx);
++	if (!file)
++		goto out;
++
++	xinew.base = &file->f_path;
++	err = vfs_statfs(xinew.base, st);
++	if (unlikely(err)) {
++		AuErr1("statfs err %d, ignored\n", err);
++		err = 0;
++		goto out;
++	}
++
++	blocks = file_inode(file)->i_blocks;
++	pr_info("begin truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
++		bindex, idx, (u64)blocks, st->f_bfree, st->f_blocks);
++
++	xinew.copy_src = file;
++	new_xino = au_xi_new(sb, &xinew);
++	if (IS_ERR(new_xino)) {
++		err = PTR_ERR(new_xino);
++		pr_err("xino(b%d-%d), err %d, ignored\n", bindex, idx, err);
++		goto out;
++	}
++
++	err = vfs_statfs(&new_xino->f_path, st);
++	if (!err)
++		pr_info("end truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
++			bindex, idx, (u64)file_inode(new_xino)->i_blocks,
++			st->f_bfree, st->f_blocks);
++	else {
++		AuErr1("statfs err %d, ignored\n", err);
++		err = 0;
++	}
++
++out:
++	return err;
++}
++
++int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin)
++{
++	int err, i;
++	unsigned long jiffy;
++	aufs_bindex_t bbot;
++	struct kstatfs *st;
++	struct au_branch *br;
++	struct au_xino *xi;
++
++	err = -ENOMEM;
++	st = kmalloc(sizeof(*st), GFP_NOFS);
++	if (unlikely(!st))
++		goto out;
++
++	err = -EINVAL;
++	bbot = au_sbbot(sb);
++	if (unlikely(bindex < 0 || bbot < bindex))
++		goto out_st;
++
++	err = 0;
++	jiffy = jiffies;
++	br = au_sbr(sb, bindex);
++	xi = br->br_xino;
++	for (i = idx_begin; !err && i < xi->xi_nfile; i++)
++		err = au_xino_do_trunc(sb, bindex, i, st);
++	if (!err)
++		au_sbi(sb)->si_xino_jiffy = jiffy;
++
++out_st:
++	au_kfree_rcu(st);
++out:
++	return err;
++}
++
++struct xino_do_trunc_args {
++	struct super_block *sb;
++	struct au_branch *br;
++	int idx;
++};
++
++static void xino_do_trunc(void *_args)
++{
++	struct xino_do_trunc_args *args = _args;
++	struct super_block *sb;
++	struct au_branch *br;
++	struct inode *dir;
++	int err, idx;
++	aufs_bindex_t bindex;
++
++	err = 0;
++	sb = args->sb;
++	dir = d_inode(sb->s_root);
++	br = args->br;
++	idx = args->idx;
++
++	si_noflush_write_lock(sb);
++	ii_read_lock_parent(dir);
++	bindex = au_br_index(sb, br->br_id);
++	err = au_xino_trunc(sb, bindex, idx);
++	ii_read_unlock(dir);
++	if (unlikely(err))
++		pr_warn("err b%d, (%d)\n", bindex, err);
++	atomic_dec(&br->br_xino->xi_truncating);
++	au_lcnt_dec(&br->br_count);
++	si_write_unlock(sb);
++	au_nwt_done(&au_sbi(sb)->si_nowait);
++	au_kfree_rcu(args);
++}
++
++/*
++ * returns the index in the xi_file array whose corresponding file is necessary
++ * to truncate, or -1 which means no need to truncate.
++ */
++static int xino_trunc_test(struct super_block *sb, struct au_branch *br)
++{
++	int err;
++	unsigned int u;
++	struct kstatfs st;
++	struct au_sbinfo *sbinfo;
++	struct au_xino *xi;
++	struct file *file;
++
++	/* todo: si_xino_expire and the ratio should be customizable */
++	sbinfo = au_sbi(sb);
++	if (time_before(jiffies,
++			sbinfo->si_xino_jiffy + sbinfo->si_xino_expire))
++		return -1;
++
++	/* truncation border */
++	xi = br->br_xino;
++	for (u = 0; u < xi->xi_nfile; u++) {
++		file = au_xino_file(xi, u);
++		if (!file)
++			continue;
++
++		err = vfs_statfs(&file->f_path, &st);
++		if (unlikely(err)) {
++			AuErr1("statfs err %d, ignored\n", err);
++			return -1;
++		}
++		if (div64_u64(st.f_bfree * 100, st.f_blocks)
++		    >= AUFS_XINO_DEF_TRUNC)
++			return u;
++	}
++
++	return -1;
++}
++
++static void xino_try_trunc(struct super_block *sb, struct au_branch *br)
++{
++	int idx;
++	struct xino_do_trunc_args *args;
++	int wkq_err;
++
++	idx = xino_trunc_test(sb, br);
++	if (idx < 0)
++		return;
++
++	if (atomic_inc_return(&br->br_xino->xi_truncating) > 1)
++		goto out;
++
++	/* lock and kfree() will be called in trunc_xino() */
++	args = kmalloc(sizeof(*args), GFP_NOFS);
++	if (unlikely(!args)) {
++		AuErr1("no memory\n");
++		goto out;
++	}
++
++	au_lcnt_inc(&br->br_count);
++	args->sb = sb;
++	args->br = br;
++	args->idx = idx;
++	wkq_err = au_wkq_nowait(xino_do_trunc, args, sb, /*flags*/0);
++	if (!wkq_err)
++		return; /* success */
++
++	pr_err("wkq %d\n", wkq_err);
++	au_lcnt_dec(&br->br_count);
++	au_kfree_rcu(args);
++
++out:
++	atomic_dec(&br->br_xino->xi_truncating);
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_xi_calc {
++	int idx;
++	loff_t pos;
++};
++
++static void au_xi_calc(struct super_block *sb, ino_t h_ino,
++		       struct au_xi_calc *calc)
++{
++	loff_t maxent;
++
++	maxent = au_xi_maxent(sb);
++	calc->idx = div64_u64_rem(h_ino, maxent, &calc->pos);
++	calc->pos *= sizeof(ino_t);
++}
++
++static int au_xino_do_new_async(struct super_block *sb, struct au_branch *br,
++				struct au_xi_calc *calc)
++{
++	int err;
++	struct file *file;
++	struct au_xino *xi = br->br_xino;
++	struct au_xi_new xinew = {
++		.xi = xi
++	};
++
++	SiMustAnyLock(sb);
++
++	err = 0;
++	if (!xi)
++		goto out;
++
++	mutex_lock(&xi->xi_mtx);
++	file = au_xino_file(xi, calc->idx);
++	if (file)
++		goto out_mtx;
++
++	file = au_xino_file(xi, /*idx*/-1);
++	AuDebugOn(!file);
++	xinew.idx = calc->idx;
++	xinew.base = &file->f_path;
++	/* xinew.copy_src = NULL; */
++	file = au_xi_new(sb, &xinew);
++	if (IS_ERR(file))
++		err = PTR_ERR(file);
++
++out_mtx:
++	mutex_unlock(&xi->xi_mtx);
++out:
++	return err;
++}
++
++struct au_xino_do_new_async_args {
++	struct super_block *sb;
++	struct au_branch *br;
++	struct au_xi_calc calc;
++	ino_t ino;
++};
++
++struct au_xi_writing {
++	struct hlist_bl_node node;
++	ino_t h_ino, ino;
++};
++
++static int au_xino_do_write(vfs_writef_t write, struct file *file,
++			    struct au_xi_calc *calc, ino_t ino);
++
++static void au_xino_call_do_new_async(void *args)
++{
++	struct au_xino_do_new_async_args *a = args;
++	struct au_branch *br;
++	struct super_block *sb;
++	struct au_sbinfo *sbi;
++	struct inode *root;
++	struct file *file;
++	struct au_xi_writing *del, *p;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	int err;
++
++	br = a->br;
++	sb = a->sb;
++	sbi = au_sbi(sb);
++	si_noflush_read_lock(sb);
++	root = d_inode(sb->s_root);
++	ii_read_lock_child(root);
++	err = au_xino_do_new_async(sb, br, &a->calc);
++	if (unlikely(err)) {
++		AuIOErr("err %d\n", err);
++		goto out;
++	}
++
++	file = au_xino_file(br->br_xino, a->calc.idx);
++	AuDebugOn(!file);
++	err = au_xino_do_write(sbi->si_xwrite, file, &a->calc, a->ino);
++	if (unlikely(err)) {
++		AuIOErr("err %d\n", err);
++		goto out;
++	}
++
++	del = NULL;
++	hbl = &br->br_xino->xi_writing;
++	hlist_bl_lock(hbl);
++	au_hbl_for_each(pos, hbl) {
++		p = container_of(pos, struct au_xi_writing, node);
++		if (p->ino == a->ino) {
++			del = p;
++			hlist_bl_del(&p->node);
++			break;
++		}
++	}
++	hlist_bl_unlock(hbl);
++	au_kfree_rcu(del);
++
++out:
++	au_lcnt_dec(&br->br_count);
++	ii_read_unlock(root);
++	si_read_unlock(sb);
++	au_nwt_done(&sbi->si_nowait);
++	au_kfree_rcu(a);
++}
++
++/*
++ * create a new xino file asynchronously
++ */
++static int au_xino_new_async(struct super_block *sb, struct au_branch *br,
++			     struct au_xi_calc *calc, ino_t ino)
++{
++	int err;
++	struct au_xino_do_new_async_args *arg;
++
++	err = -ENOMEM;
++	arg = kmalloc(sizeof(*arg), GFP_NOFS);
++	if (unlikely(!arg))
++		goto out;
++
++	arg->sb = sb;
++	arg->br = br;
++	arg->calc = *calc;
++	arg->ino = ino;
++	au_lcnt_inc(&br->br_count);
++	err = au_wkq_nowait(au_xino_call_do_new_async, arg, sb, AuWkq_NEST);
++	if (unlikely(err)) {
++		pr_err("wkq %d\n", err);
++		au_lcnt_dec(&br->br_count);
++		au_kfree_rcu(arg);
++	}
++
++out:
++	return err;
++}
++
++/*
++ * read @ino from xinofile for the specified branch{@sb, @bindex}
++ * at the position of @h_ino.
++ */
++int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		 ino_t *ino)
++{
++	int err;
++	ssize_t sz;
++	struct au_xi_calc calc;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++	struct au_xino *xi;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos;
++	struct au_xi_writing *p;
++
++	*ino = 0;
++	if (!au_opt_test(au_mntflags(sb), XINO))
++		return 0; /* no xino */
++
++	err = 0;
++	au_xi_calc(sb, h_ino, &calc);
++	xi = au_sbr(sb, bindex)->br_xino;
++	file = au_xino_file(xi, calc.idx);
++	if (!file) {
++		hbl = &xi->xi_writing;
++		hlist_bl_lock(hbl);
++		au_hbl_for_each(pos, hbl) {
++			p = container_of(pos, struct au_xi_writing, node);
++			if (p->h_ino == h_ino) {
++				AuDbg("hi%llu, i%llu, found\n",
++				      (u64)p->h_ino, (u64)p->ino);
++				*ino = p->ino;
++				break;
++			}
++		}
++		hlist_bl_unlock(hbl);
++		return 0;
++	} else if (vfsub_f_size_read(file) < calc.pos + sizeof(*ino))
++		return 0; /* no xino */
++
++	sbinfo = au_sbi(sb);
++	sz = xino_fread(sbinfo->si_xread, file, ino, sizeof(*ino), &calc.pos);
++	if (sz == sizeof(*ino))
++		return 0; /* success */
++
++	err = sz;
++	if (unlikely(sz >= 0)) {
++		err = -EIO;
++		AuIOErr("xino read error (%zd)\n", sz);
++	}
++	return err;
++}
++
++static int au_xino_do_write(vfs_writef_t write, struct file *file,
++			    struct au_xi_calc *calc, ino_t ino)
++{
++	ssize_t sz;
++
++	sz = xino_fwrite(write, file, &ino, sizeof(ino), &calc->pos);
++	if (sz == sizeof(ino))
++		return 0; /* success */
++
++	AuIOErr("write failed (%zd)\n", sz);
++	return -EIO;
++}
++
++/*
++ * write @ino to the xinofile for the specified branch{@sb, @bindex}
++ * at the position of @h_ino.
++ * even if @ino is zero, it is written to the xinofile and means no entry.
++ * if the size of the xino file on a specific filesystem exceeds the watermark,
++ * try truncating it.
++ */
++int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		  ino_t ino)
++{
++	int err;
++	unsigned int mnt_flags;
++	struct au_xi_calc calc;
++	struct file *file;
++	struct au_branch *br;
++	struct au_xino *xi;
++	struct au_xi_writing *p;
++
++	SiMustAnyLock(sb);
++
++	mnt_flags = au_mntflags(sb);
++	if (!au_opt_test(mnt_flags, XINO))
++		return 0;
++
++	au_xi_calc(sb, h_ino, &calc);
++	br = au_sbr(sb, bindex);
++	xi = br->br_xino;
++	file = au_xino_file(xi, calc.idx);
++	if (!file) {
++		/* store the inum pair into the list */
++		p = kmalloc(sizeof(*p), GFP_NOFS | __GFP_NOFAIL);
++		p->h_ino = h_ino;
++		p->ino = ino;
++		au_hbl_add(&p->node, &xi->xi_writing);
++
++		/* create and write a new xino file asynchronously */
++		err = au_xino_new_async(sb, br, &calc, ino);
++		if (!err)
++			return 0; /* success */
++		goto out;
++	}
++
++	err = au_xino_do_write(au_sbi(sb)->si_xwrite, file, &calc, ino);
++	if (!err) {
++		br = au_sbr(sb, bindex);
++		if (au_opt_test(mnt_flags, TRUNC_XINO)
++		    && au_test_fs_trunc_xino(au_br_sb(br)))
++			xino_try_trunc(sb, br);
++		return 0; /* success */
++	}
++
++out:
++	AuIOErr("write failed (%d)\n", err);
++	return -EIO;
++}
++
++static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf,
++			      size_t size, loff_t *pos);
++
++/* todo: unnecessary to support mmap_sem since kernel-space? */
++ssize_t xino_fread(vfs_readf_t func, struct file *file, void *kbuf, size_t size,
++		   loff_t *pos)
++{
++	ssize_t err;
++	mm_segment_t oldfs;
++	union {
++		void *k;
++		char __user *u;
++	} buf;
++	int i;
++	const int prevent_endless = 10;
++
++	i = 0;
++	buf.k = kbuf;
++	oldfs = get_fs();
++	set_fs(KERNEL_DS);
++	do {
++		err = func(file, buf.u, size, pos);
++		if (err == -EINTR
++		    && !au_wkq_test()
++		    && fatal_signal_pending(current)) {
++			set_fs(oldfs);
++			err = xino_fread_wkq(func, file, kbuf, size, pos);
++			BUG_ON(err == -EINTR);
++			oldfs = get_fs();
++			set_fs(KERNEL_DS);
++		}
++	} while (i++ < prevent_endless
++		 && (err == -EAGAIN || err == -EINTR));
++	set_fs(oldfs);
++
++#if 0 /* reserved for future use */
++	if (err > 0)
++		fsnotify_access(file->f_path.dentry);
++#endif
++
++	return err;
++}
++
++struct xino_fread_args {
++	ssize_t *errp;
++	vfs_readf_t func;
++	struct file *file;
++	void *buf;
++	size_t size;
++	loff_t *pos;
++};
++
++static void call_xino_fread(void *args)
++{
++	struct xino_fread_args *a = args;
++	*a->errp = xino_fread(a->func, a->file, a->buf, a->size, a->pos);
++}
++
++static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf,
++			      size_t size, loff_t *pos)
++{
++	ssize_t err;
++	int wkq_err;
++	struct xino_fread_args args = {
++		.errp	= &err,
++		.func	= func,
++		.file	= file,
++		.buf	= buf,
++		.size	= size,
++		.pos	= pos
++	};
++
++	wkq_err = au_wkq_wait(call_xino_fread, &args);
++	if (unlikely(wkq_err))
++		err = wkq_err;
++
++	return err;
++}
++
++static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf,
++			       size_t size, loff_t *pos);
++
++static ssize_t do_xino_fwrite(vfs_writef_t func, struct file *file, void *kbuf,
++			      size_t size, loff_t *pos)
++{
++	ssize_t err;
++	mm_segment_t oldfs;
++	union {
++		void *k;
++		const char __user *u;
++	} buf;
++	int i;
++	const int prevent_endless = 10;
++
++	i = 0;
++	buf.k = kbuf;
++	oldfs = get_fs();
++	set_fs(KERNEL_DS);
++	do {
++		err = func(file, buf.u, size, pos);
++		if (err == -EINTR
++		    && !au_wkq_test()
++		    && fatal_signal_pending(current)) {
++			set_fs(oldfs);
++			err = xino_fwrite_wkq(func, file, kbuf, size, pos);
++			BUG_ON(err == -EINTR);
++			oldfs = get_fs();
++			set_fs(KERNEL_DS);
++		}
++	} while (i++ < prevent_endless
++		 && (err == -EAGAIN || err == -EINTR));
++	set_fs(oldfs);
++
++#if 0 /* reserved for future use */
++	if (err > 0)
++		fsnotify_modify(file->f_path.dentry);
++#endif
++
++	return err;
++}
++
++struct do_xino_fwrite_args {
++	ssize_t *errp;
++	vfs_writef_t func;
++	struct file *file;
++	void *buf;
++	size_t size;
++	loff_t *pos;
++};
++
++static void call_do_xino_fwrite(void *args)
++{
++	struct do_xino_fwrite_args *a = args;
++	*a->errp = do_xino_fwrite(a->func, a->file, a->buf, a->size, a->pos);
++}
++
++static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf,
++			       size_t size, loff_t *pos)
++{
++	ssize_t err;
++	int wkq_err;
++	struct do_xino_fwrite_args args = {
++		.errp	= &err,
++		.func	= func,
++		.file	= file,
++		.buf	= buf,
++		.size	= size,
++		.pos	= pos
++	};
++
++	/*
++	 * it breaks RLIMIT_FSIZE and normal user's limit,
++	 * users should care about quota and real 'filesystem full.'
++	 */
++	wkq_err = au_wkq_wait(call_do_xino_fwrite, &args);
++	if (unlikely(wkq_err))
++		err = wkq_err;
++
++	return err;
++}
++
++ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf,
++		    size_t size, loff_t *pos)
++{
++	ssize_t err;
++
++	if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) {
++		lockdep_off();
++		err = do_xino_fwrite(func, file, buf, size, pos);
++		lockdep_on();
++	} else {
++		lockdep_off();
++		err = xino_fwrite_wkq(func, file, buf, size, pos);
++		lockdep_on();
++	}
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * inode number bitmap
++ */
++static const int page_bits = (int)PAGE_SIZE * BITS_PER_BYTE;
++static ino_t xib_calc_ino(unsigned long pindex, int bit)
++{
++	ino_t ino;
++
++	AuDebugOn(bit < 0 || page_bits <= bit);
++	ino = AUFS_FIRST_INO + pindex * page_bits + bit;
++	return ino;
++}
++
++static void xib_calc_bit(ino_t ino, unsigned long *pindex, int *bit)
++{
++	AuDebugOn(ino < AUFS_FIRST_INO);
++	ino -= AUFS_FIRST_INO;
++	*pindex = ino / page_bits;
++	*bit = ino % page_bits;
++}
++
++static int xib_pindex(struct super_block *sb, unsigned long pindex)
++{
++	int err;
++	loff_t pos;
++	ssize_t sz;
++	struct au_sbinfo *sbinfo;
++	struct file *xib;
++	unsigned long *p;
++
++	sbinfo = au_sbi(sb);
++	MtxMustLock(&sbinfo->si_xib_mtx);
++	AuDebugOn(pindex > ULONG_MAX / PAGE_SIZE
++		  || !au_opt_test(sbinfo->si_mntflags, XINO));
++
++	if (pindex == sbinfo->si_xib_last_pindex)
++		return 0;
++
++	xib = sbinfo->si_xib;
++	p = sbinfo->si_xib_buf;
++	pos = sbinfo->si_xib_last_pindex;
++	pos *= PAGE_SIZE;
++	sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos);
++	if (unlikely(sz != PAGE_SIZE))
++		goto out;
++
++	pos = pindex;
++	pos *= PAGE_SIZE;
++	if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE)
++		sz = xino_fread(sbinfo->si_xread, xib, p, PAGE_SIZE, &pos);
++	else {
++		memset(p, 0, PAGE_SIZE);
++		sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos);
++	}
++	if (sz == PAGE_SIZE) {
++		sbinfo->si_xib_last_pindex = pindex;
++		return 0; /* success */
++	}
++
++out:
++	AuIOErr1("write failed (%zd)\n", sz);
++	err = sz;
++	if (sz >= 0)
++		err = -EIO;
++	return err;
++}
++
++static void au_xib_clear_bit(struct inode *inode)
++{
++	int err, bit;
++	unsigned long pindex;
++	struct super_block *sb;
++	struct au_sbinfo *sbinfo;
++
++	AuDebugOn(inode->i_nlink);
++
++	sb = inode->i_sb;
++	xib_calc_bit(inode->i_ino, &pindex, &bit);
++	AuDebugOn(page_bits <= bit);
++	sbinfo = au_sbi(sb);
++	mutex_lock(&sbinfo->si_xib_mtx);
++	err = xib_pindex(sb, pindex);
++	if (!err) {
++		clear_bit(bit, sbinfo->si_xib_buf);
++		sbinfo->si_xib_next_bit = bit;
++	}
++	mutex_unlock(&sbinfo->si_xib_mtx);
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * truncate a xino bitmap file
++ */
++
++/* todo: slow */
++static int do_xib_restore(struct super_block *sb, struct file *file, void *page)
++{
++	int err, bit;
++	ssize_t sz;
++	unsigned long pindex;
++	loff_t pos, pend;
++	struct au_sbinfo *sbinfo;
++	vfs_readf_t func;
++	ino_t *ino;
++	unsigned long *p;
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	MtxMustLock(&sbinfo->si_xib_mtx);
++	p = sbinfo->si_xib_buf;
++	func = sbinfo->si_xread;
++	pend = vfsub_f_size_read(file);
++	pos = 0;
++	while (pos < pend) {
++		sz = xino_fread(func, file, page, PAGE_SIZE, &pos);
++		err = sz;
++		if (unlikely(sz <= 0))
++			goto out;
++
++		err = 0;
++		for (ino = page; sz > 0; ino++, sz -= sizeof(ino)) {
++			if (unlikely(*ino < AUFS_FIRST_INO))
++				continue;
++
++			xib_calc_bit(*ino, &pindex, &bit);
++			AuDebugOn(page_bits <= bit);
++			err = xib_pindex(sb, pindex);
++			if (!err)
++				set_bit(bit, p);
++			else
++				goto out;
++		}
++	}
++
++out:
++	return err;
++}
++
++static int xib_restore(struct super_block *sb)
++{
++	int err, i;
++	unsigned int nfile;
++	aufs_bindex_t bindex, bbot;
++	void *page;
++	struct au_branch *br;
++	struct au_xino *xi;
++	struct file *file;
++
++	err = -ENOMEM;
++	page = (void *)__get_free_page(GFP_NOFS);
++	if (unlikely(!page))
++		goto out;
++
++	err = 0;
++	bbot = au_sbbot(sb);
++	for (bindex = 0; !err && bindex <= bbot; bindex++)
++		if (!bindex || is_sb_shared(sb, bindex, bindex - 1) < 0) {
++			br = au_sbr(sb, bindex);
++			xi = br->br_xino;
++			nfile = xi->xi_nfile;
++			for (i = 0; i < nfile; i++) {
++				file = au_xino_file(xi, i);
++				if (file)
++					err = do_xib_restore(sb, file, page);
++			}
++		} else
++			AuDbg("skip shared b%d\n", bindex);
++	free_page((unsigned long)page);
++
++out:
++	return err;
++}
++
++int au_xib_trunc(struct super_block *sb)
++{
++	int err;
++	ssize_t sz;
++	loff_t pos;
++	struct au_sbinfo *sbinfo;
++	unsigned long *p;
++	struct file *file;
++
++	SiMustWriteLock(sb);
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	if (!au_opt_test(sbinfo->si_mntflags, XINO))
++		goto out;
++
++	file = sbinfo->si_xib;
++	if (vfsub_f_size_read(file) <= PAGE_SIZE)
++		goto out;
++
++	file = au_xino_create2(sb, &sbinfo->si_xib->f_path, NULL);
++	err = PTR_ERR(file);
++	if (IS_ERR(file))
++		goto out;
++	fput(sbinfo->si_xib);
++	sbinfo->si_xib = file;
++
++	p = sbinfo->si_xib_buf;
++	memset(p, 0, PAGE_SIZE);
++	pos = 0;
++	sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xib, p, PAGE_SIZE, &pos);
++	if (unlikely(sz != PAGE_SIZE)) {
++		err = sz;
++		AuIOErr("err %d\n", err);
++		if (sz >= 0)
++			err = -EIO;
++		goto out;
++	}
++
++	mutex_lock(&sbinfo->si_xib_mtx);
++	/* mnt_want_write() is unnecessary here */
++	err = xib_restore(sb);
++	mutex_unlock(&sbinfo->si_xib_mtx);
++
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++struct au_xino *au_xino_alloc(unsigned int nfile)
++{
++	struct au_xino *xi;
++
++	xi = kzalloc(sizeof(*xi), GFP_NOFS);
++	if (unlikely(!xi))
++		goto out;
++	xi->xi_nfile = nfile;
++	xi->xi_file = kcalloc(nfile, sizeof(*xi->xi_file), GFP_NOFS);
++	if (unlikely(!xi->xi_file))
++		goto out_free;
++
++	xi->xi_nondir.total = 8; /* initial size */
++	xi->xi_nondir.array = kcalloc(xi->xi_nondir.total, sizeof(ino_t),
++				      GFP_NOFS);
++	if (unlikely(!xi->xi_nondir.array))
++		goto out_file;
++
++	spin_lock_init(&xi->xi_nondir.spin);
++	init_waitqueue_head(&xi->xi_nondir.wqh);
++	mutex_init(&xi->xi_mtx);
++	INIT_HLIST_BL_HEAD(&xi->xi_writing);
++	atomic_set(&xi->xi_truncating, 0);
++	kref_init(&xi->xi_kref);
++	goto out; /* success */
++
++out_file:
++	au_kfree_try_rcu(xi->xi_file);
++out_free:
++	au_kfree_rcu(xi);
++	xi = NULL;
++out:
++	return xi;
++}
++
++static int au_xino_init(struct au_branch *br, int idx, struct file *file)
++{
++	int err;
++	struct au_xino *xi;
++
++	err = 0;
++	xi = au_xino_alloc(idx + 1);
++	if (unlikely(!xi)) {
++		err = -ENOMEM;
++		goto out;
++	}
++
++	if (file)
++		get_file(file);
++	xi->xi_file[idx] = file;
++	AuDebugOn(br->br_xino);
++	br->br_xino = xi;
++
++out:
++	return err;
++}
++
++static void au_xino_release(struct kref *kref)
++{
++	struct au_xino *xi;
++	int i;
++	unsigned long ul;
++	struct hlist_bl_head *hbl;
++	struct hlist_bl_node *pos, *n;
++	struct au_xi_writing *p;
++
++	xi = container_of(kref, struct au_xino, xi_kref);
++	for (i = 0; i < xi->xi_nfile; i++)
++		if (xi->xi_file[i])
++			fput(xi->xi_file[i]);
++	for (i = xi->xi_nondir.total - 1; i >= 0; i--)
++		AuDebugOn(xi->xi_nondir.array[i]);
++	mutex_destroy(&xi->xi_mtx);
++	hbl = &xi->xi_writing;
++	ul = au_hbl_count(hbl);
++	if (unlikely(ul)) {
++		pr_warn("xi_writing %lu\n", ul);
++		hlist_bl_lock(hbl);
++		hlist_bl_for_each_entry_safe (p, pos, n, hbl, node) {
++			hlist_bl_del(&p->node);
++			au_kfree_rcu(p);
++		}
++		hlist_bl_unlock(hbl);
++	}
++	au_kfree_try_rcu(xi->xi_file);
++	au_kfree_try_rcu(xi->xi_nondir.array);
++	au_kfree_rcu(xi);
++}
++
++int au_xino_put(struct au_branch *br)
++{
++	int ret;
++	struct au_xino *xi;
++
++	ret = 0;
++	xi = br->br_xino;
++	if (xi) {
++		br->br_xino = NULL;
++		ret = kref_put(&xi->xi_kref, au_xino_release);
++	}
++
++	return ret;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * xino mount option handlers
++ */
++
++/* xino bitmap */
++static void xino_clear_xib(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	/* unnecessary to clear sbinfo->si_xread and ->si_xwrite */
++	if (sbinfo->si_xib)
++		fput(sbinfo->si_xib);
++	sbinfo->si_xib = NULL;
++	if (sbinfo->si_xib_buf)
++		free_page((unsigned long)sbinfo->si_xib_buf);
++	sbinfo->si_xib_buf = NULL;
++}
++
++static int au_xino_set_xib(struct super_block *sb, struct path *path)
++{
++	int err;
++	loff_t pos;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++	struct super_block *xi_sb;
++
++	SiMustWriteLock(sb);
++
++	sbinfo = au_sbi(sb);
++	file = au_xino_create2(sb, path, sbinfo->si_xib);
++	err = PTR_ERR(file);
++	if (IS_ERR(file))
++		goto out;
++	if (sbinfo->si_xib)
++		fput(sbinfo->si_xib);
++	sbinfo->si_xib = file;
++	sbinfo->si_xread = vfs_readf(file);
++	sbinfo->si_xwrite = vfs_writef(file);
++	xi_sb = file_inode(file)->i_sb;
++	sbinfo->si_ximaxent = xi_sb->s_maxbytes;
++	if (unlikely(sbinfo->si_ximaxent < PAGE_SIZE)) {
++		err = -EIO;
++		pr_err("s_maxbytes(%llu) on %s is too small\n",
++		       (u64)sbinfo->si_ximaxent, au_sbtype(xi_sb));
++		goto out_unset;
++	}
++	sbinfo->si_ximaxent /= sizeof(ino_t);
++
++	err = -ENOMEM;
++	if (!sbinfo->si_xib_buf)
++		sbinfo->si_xib_buf = (void *)get_zeroed_page(GFP_NOFS);
++	if (unlikely(!sbinfo->si_xib_buf))
++		goto out_unset;
++
++	sbinfo->si_xib_last_pindex = 0;
++	sbinfo->si_xib_next_bit = 0;
++	if (vfsub_f_size_read(file) < PAGE_SIZE) {
++		pos = 0;
++		err = xino_fwrite(sbinfo->si_xwrite, file, sbinfo->si_xib_buf,
++				  PAGE_SIZE, &pos);
++		if (unlikely(err != PAGE_SIZE))
++			goto out_free;
++	}
++	err = 0;
++	goto out; /* success */
++
++out_free:
++	if (sbinfo->si_xib_buf)
++		free_page((unsigned long)sbinfo->si_xib_buf);
++	sbinfo->si_xib_buf = NULL;
++	if (err >= 0)
++		err = -EIO;
++out_unset:
++	fput(sbinfo->si_xib);
++	sbinfo->si_xib = NULL;
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++/* xino for each branch */
++static void xino_clear_br(struct super_block *sb)
++{
++	aufs_bindex_t bindex, bbot;
++	struct au_branch *br;
++
++	bbot = au_sbbot(sb);
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		AuDebugOn(!br);
++		au_xino_put(br);
++	}
++}
++
++static void au_xino_set_br_shared(struct super_block *sb, struct au_branch *br,
++				  aufs_bindex_t bshared)
++{
++	struct au_branch *brshared;
++
++	brshared = au_sbr(sb, bshared);
++	AuDebugOn(!brshared->br_xino);
++	AuDebugOn(!brshared->br_xino->xi_file);
++	if (br->br_xino != brshared->br_xino) {
++		au_xino_get(brshared);
++		au_xino_put(br);
++		br->br_xino = brshared->br_xino;
++	}
++}
++
++struct au_xino_do_set_br {
++	vfs_writef_t writef;
++	struct au_branch *br;
++	ino_t h_ino;
++	aufs_bindex_t bshared;
++};
++
++static int au_xino_do_set_br(struct super_block *sb, struct path *path,
++			     struct au_xino_do_set_br *args)
++{
++	int err;
++	struct au_xi_calc calc;
++	struct file *file;
++	struct au_branch *br;
++	struct au_xi_new xinew = {
++		.base = path
++	};
++
++	br = args->br;
++	xinew.xi = br->br_xino;
++	au_xi_calc(sb, args->h_ino, &calc);
++	xinew.copy_src = au_xino_file(xinew.xi, calc.idx);
++	if (args->bshared >= 0)
++		/* shared xino */
++		au_xino_set_br_shared(sb, br, args->bshared);
++	else if (!xinew.xi) {
++		/* new xino */
++		err = au_xino_init(br, calc.idx, xinew.copy_src);
++		if (unlikely(err))
++			goto out;
++	}
++
++	/* force re-creating */
++	xinew.xi = br->br_xino;
++	xinew.idx = calc.idx;
++	mutex_lock(&xinew.xi->xi_mtx);
++	file = au_xi_new(sb, &xinew);
++	mutex_unlock(&xinew.xi->xi_mtx);
++	err = PTR_ERR(file);
++	if (IS_ERR(file))
++		goto out;
++	AuDebugOn(!file);
++
++	err = au_xino_do_write(args->writef, file, &calc, AUFS_ROOT_INO);
++	if (unlikely(err))
++		au_xino_put(br);
++
++out:
++	AuTraceErr(err);
++	return err;
++}
++
++static int au_xino_set_br(struct super_block *sb, struct path *path)
++{
++	int err;
++	aufs_bindex_t bindex, bbot;
++	struct au_xino_do_set_br args;
++	struct inode *inode;
++
++	SiMustWriteLock(sb);
++
++	bbot = au_sbbot(sb);
++	inode = d_inode(sb->s_root);
++	args.writef = au_sbi(sb)->si_xwrite;
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		args.h_ino = au_h_iptr(inode, bindex)->i_ino;
++		args.br = au_sbr(sb, bindex);
++		args.bshared = is_sb_shared(sb, bindex, bindex - 1);
++		err = au_xino_do_set_br(sb, path, &args);
++		if (unlikely(err))
++			break;
++	}
++
++	AuTraceErr(err);
++	return err;
++}
++
++void au_xino_clr(struct super_block *sb)
++{
++	struct au_sbinfo *sbinfo;
++
++	au_xigen_clr(sb);
++	xino_clear_xib(sb);
++	xino_clear_br(sb);
++	dbgaufs_brs_del(sb, 0);
++	sbinfo = au_sbi(sb);
++	/* lvalue, do not call au_mntflags() */
++	au_opt_clr(sbinfo->si_mntflags, XINO);
++}
++
++int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount)
++{
++	int err, skip;
++	struct dentry *dentry, *parent, *cur_dentry, *cur_parent;
++	struct qstr *dname, *cur_name;
++	struct file *cur_xino;
++	struct au_sbinfo *sbinfo;
++	struct path *path, *cur_path;
++
++	SiMustWriteLock(sb);
++
++	err = 0;
++	sbinfo = au_sbi(sb);
++	path = &xiopt->file->f_path;
++	dentry = path->dentry;
++	parent = dget_parent(dentry);
++	if (remount) {
++		skip = 0;
++		cur_xino = sbinfo->si_xib;
++		if (cur_xino) {
++			cur_path = &cur_xino->f_path;
++			cur_dentry = cur_path->dentry;
++			cur_parent = dget_parent(cur_dentry);
++			cur_name = &cur_dentry->d_name;
++			dname = &dentry->d_name;
++			skip = (cur_parent == parent
++				&& au_qstreq(dname, cur_name));
++			dput(cur_parent);
++		}
++		if (skip)
++			goto out;
++	}
++
++	au_opt_set(sbinfo->si_mntflags, XINO);
++	err = au_xino_set_xib(sb, path);
++	/* si_x{read,write} are set */
++	if (!err)
++		err = au_xigen_set(sb, path);
++	if (!err)
++		err = au_xino_set_br(sb, path);
++	if (!err) {
++		dbgaufs_brs_add(sb, 0, /*topdown*/1);
++		goto out; /* success */
++	}
++
++	/* reset all */
++	AuIOErr("failed setting xino(%d).\n", err);
++	au_xino_clr(sb);
++
++out:
++	dput(parent);
++	return err;
++}
++
++/*
++ * create a xinofile at the default place/path.
++ */
++struct file *au_xino_def(struct super_block *sb)
++{
++	struct file *file;
++	char *page, *p;
++	struct au_branch *br;
++	struct super_block *h_sb;
++	struct path path;
++	aufs_bindex_t bbot, bindex, bwr;
++
++	br = NULL;
++	bbot = au_sbbot(sb);
++	bwr = -1;
++	for (bindex = 0; bindex <= bbot; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_writable(br->br_perm)
++		    && !au_test_fs_bad_xino(au_br_sb(br))) {
++			bwr = bindex;
++			break;
++		}
++	}
++
++	if (bwr >= 0) {
++		file = ERR_PTR(-ENOMEM);
++		page = (void *)__get_free_page(GFP_NOFS);
++		if (unlikely(!page))
++			goto out;
++		path.mnt = au_br_mnt(br);
++		path.dentry = au_h_dptr(sb->s_root, bwr);
++		p = d_path(&path, page, PATH_MAX - sizeof(AUFS_XINO_FNAME));
++		file = (void *)p;
++		if (!IS_ERR(p)) {
++			strcat(p, "/" AUFS_XINO_FNAME);
++			AuDbg("%s\n", p);
++			file = au_xino_create(sb, p, /*silent*/0, /*wbrtop*/1);
++		}
++		free_page((unsigned long)page);
++	} else {
++		file = au_xino_create(sb, AUFS_XINO_DEFPATH, /*silent*/0,
++				      /*wbrtop*/0);
++		if (IS_ERR(file))
++			goto out;
++		h_sb = file->f_path.dentry->d_sb;
++		if (unlikely(au_test_fs_bad_xino(h_sb))) {
++			pr_err("xino doesn't support %s(%s)\n",
++			       AUFS_XINO_DEFPATH, au_sbtype(h_sb));
++			fput(file);
++			file = ERR_PTR(-EINVAL);
++		}
++	}
++
++out:
++	return file;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * initialize the xinofile for the specified branch @br
++ * at the place/path where @base_file indicates.
++ * test whether another branch is on the same filesystem or not,
++ * if found then share the xinofile with another branch.
++ */
++int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t h_ino,
++		    struct path *base)
++{
++	int err;
++	struct au_xino_do_set_br args = {
++		.h_ino	= h_ino,
++		.br	= br
++	};
++
++	args.writef = au_sbi(sb)->si_xwrite;
++	args.bshared = sbr_find_shared(sb, /*btop*/0, au_sbbot(sb),
++				       au_br_sb(br));
++	err = au_xino_do_set_br(sb, base, &args);
++	if (unlikely(err))
++		au_xino_put(br);
++
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/*
++ * get an unused inode number from bitmap
++ */
++ino_t au_xino_new_ino(struct super_block *sb)
++{
++	ino_t ino;
++	unsigned long *p, pindex, ul, pend;
++	struct au_sbinfo *sbinfo;
++	struct file *file;
++	int free_bit, err;
++
++	if (!au_opt_test(au_mntflags(sb), XINO))
++		return iunique(sb, AUFS_FIRST_INO);
++
++	sbinfo = au_sbi(sb);
++	mutex_lock(&sbinfo->si_xib_mtx);
++	p = sbinfo->si_xib_buf;
++	free_bit = sbinfo->si_xib_next_bit;
++	if (free_bit < page_bits && !test_bit(free_bit, p))
++		goto out; /* success */
++	free_bit = find_first_zero_bit(p, page_bits);
++	if (free_bit < page_bits)
++		goto out; /* success */
++
++	pindex = sbinfo->si_xib_last_pindex;
++	for (ul = pindex - 1; ul < ULONG_MAX; ul--) {
++		err = xib_pindex(sb, ul);
++		if (unlikely(err))
++			goto out_err;
++		free_bit = find_first_zero_bit(p, page_bits);
++		if (free_bit < page_bits)
++			goto out; /* success */
++	}
++
++	file = sbinfo->si_xib;
++	pend = vfsub_f_size_read(file) / PAGE_SIZE;
++	for (ul = pindex + 1; ul <= pend; ul++) {
++		err = xib_pindex(sb, ul);
++		if (unlikely(err))
++			goto out_err;
++		free_bit = find_first_zero_bit(p, page_bits);
++		if (free_bit < page_bits)
++			goto out; /* success */
++	}
++	BUG();
++
++out:
++	set_bit(free_bit, p);
++	sbinfo->si_xib_next_bit = free_bit + 1;
++	pindex = sbinfo->si_xib_last_pindex;
++	mutex_unlock(&sbinfo->si_xib_mtx);
++	ino = xib_calc_ino(pindex, free_bit);
++	AuDbg("i%lu\n", (unsigned long)ino);
++	return ino;
++out_err:
++	mutex_unlock(&sbinfo->si_xib_mtx);
++	AuDbg("i0\n");
++	return 0;
++}
++
++/* for s_op->delete_inode() */
++void au_xino_delete_inode(struct inode *inode, const int unlinked)
++{
++	int err;
++	unsigned int mnt_flags;
++	aufs_bindex_t bindex, bbot, bi;
++	unsigned char try_trunc;
++	struct au_iinfo *iinfo;
++	struct super_block *sb;
++	struct au_hinode *hi;
++	struct inode *h_inode;
++	struct au_branch *br;
++	vfs_writef_t xwrite;
++	struct au_xi_calc calc;
++	struct file *file;
++
++	AuDebugOn(au_is_bad_inode(inode));
++
++	sb = inode->i_sb;
++	mnt_flags = au_mntflags(sb);
++	if (!au_opt_test(mnt_flags, XINO)
++	    || inode->i_ino == AUFS_ROOT_INO)
++		return;
++
++	if (unlinked) {
++		au_xigen_inc(inode);
++		au_xib_clear_bit(inode);
++	}
++
++	iinfo = au_ii(inode);
++	bindex = iinfo->ii_btop;
++	if (bindex < 0)
++		return;
++
++	xwrite = au_sbi(sb)->si_xwrite;
++	try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO);
++	hi = au_hinode(iinfo, bindex);
++	bbot = iinfo->ii_bbot;
++	for (; bindex <= bbot; bindex++, hi++) {
++		h_inode = hi->hi_inode;
++		if (!h_inode
++		    || (!unlinked && h_inode->i_nlink))
++			continue;
++
++		/* inode may not be revalidated */
++		bi = au_br_index(sb, hi->hi_id);
++		if (bi < 0)
++			continue;
++
++		br = au_sbr(sb, bi);
++		au_xi_calc(sb, h_inode->i_ino, &calc);
++		file = au_xino_file(br->br_xino, calc.idx);
++		if (IS_ERR_OR_NULL(file))
++			continue;
++
++		err = au_xino_do_write(xwrite, file, &calc, /*ino*/0);
++		if (!err && try_trunc
++		    && au_test_fs_trunc_xino(au_br_sb(br)))
++			xino_try_trunc(sb, br);
++	}
++}
++
++/* ---------------------------------------------------------------------- */
++
++static int au_xinondir_find(struct au_xino *xi, ino_t h_ino)
++{
++	int found, total, i;
++
++	found = -1;
++	total = xi->xi_nondir.total;
++	for (i = 0; i < total; i++) {
++		if (xi->xi_nondir.array[i] != h_ino)
++			continue;
++		found = i;
++		break;
++	}
++
++	return found;
++}
++
++static int au_xinondir_expand(struct au_xino *xi)
++{
++	int err, sz;
++	ino_t *p;
++
++	BUILD_BUG_ON(KMALLOC_MAX_SIZE > INT_MAX);
++
++	err = -ENOMEM;
++	sz = xi->xi_nondir.total * sizeof(ino_t);
++	if (unlikely(sz > KMALLOC_MAX_SIZE / 2))
++		goto out;
++	p = au_kzrealloc(xi->xi_nondir.array, sz, sz << 1, GFP_ATOMIC,
++			 /*may_shrink*/0);
++	if (p) {
++		xi->xi_nondir.array = p;
++		xi->xi_nondir.total <<= 1;
++		AuDbg("xi_nondir.total %d\n", xi->xi_nondir.total);
++		err = 0;
++	}
++
++out:
++	return err;
++}
++
++void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
++		       ino_t h_ino, int idx)
++{
++	struct au_xino *xi;
++
++	AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
++	xi = au_sbr(sb, bindex)->br_xino;
++	AuDebugOn(idx < 0 || xi->xi_nondir.total <= idx);
++
++	spin_lock(&xi->xi_nondir.spin);
++	AuDebugOn(xi->xi_nondir.array[idx] != h_ino);
++	xi->xi_nondir.array[idx] = 0;
++	spin_unlock(&xi->xi_nondir.spin);
++	wake_up_all(&xi->xi_nondir.wqh);
++}
++
++int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
++		      int *idx)
++{
++	int err, found, empty;
++	struct au_xino *xi;
++
++	err = 0;
++	*idx = -1;
++	if (!au_opt_test(au_mntflags(sb), XINO))
++		goto out; /* no xino */
++
++	xi = au_sbr(sb, bindex)->br_xino;
++
++again:
++	spin_lock(&xi->xi_nondir.spin);
++	found = au_xinondir_find(xi, h_ino);
++	if (found == -1) {
++		empty = au_xinondir_find(xi, /*h_ino*/0);
++		if (empty == -1) {
++			empty = xi->xi_nondir.total;
++			err = au_xinondir_expand(xi);
++			if (unlikely(err))
++				goto out_unlock;
++		}
++		xi->xi_nondir.array[empty] = h_ino;
++		*idx = empty;
++	} else {
++		spin_unlock(&xi->xi_nondir.spin);
++		wait_event(xi->xi_nondir.wqh,
++			   xi->xi_nondir.array[found] != h_ino);
++		goto again;
++	}
++
++out_unlock:
++	spin_unlock(&xi->xi_nondir.spin);
++out:
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
++int au_xino_path(struct seq_file *seq, struct file *file)
++{
++	int err;
++
++	err = au_seq_path(seq, &file->f_path);
++	if (unlikely(err))
++		goto out;
++
++#define Deleted "\\040(deleted)"
++	seq->count -= sizeof(Deleted) - 1;
++	AuDebugOn(memcmp(seq->buf + seq->count, Deleted,
++			 sizeof(Deleted) - 1));
++#undef Deleted
++
++out:
++	return err;
++}
+diff -Nurp linux-5.4/fs/dcache.c linux-5.4-aufs/fs/dcache.c
+--- linux-5.4/fs/dcache.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/dcache.c	2019-11-28 01:25:59.069925618 +0200
+@@ -1264,7 +1264,7 @@ enum d_walk_ret {
+  *
+  * The @enter() callbacks are called with d_lock held.
+  */
+-static void d_walk(struct dentry *parent, void *data,
++void d_walk(struct dentry *parent, void *data,
+ 		   enum d_walk_ret (*enter)(void *, struct dentry *))
+ {
+ 	struct dentry *this_parent;
+diff -Nurp linux-5.4/fs/fcntl.c linux-5.4-aufs/fs/fcntl.c
+--- linux-5.4/fs/fcntl.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/fcntl.c	2019-11-28 01:25:59.069925618 +0200
+@@ -32,7 +32,7 @@
+ 
+ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
+ 
+-static int setfl(int fd, struct file * filp, unsigned long arg)
++int setfl(int fd, struct file * filp, unsigned long arg)
+ {
+ 	struct inode * inode = file_inode(filp);
+ 	int error = 0;
+@@ -63,6 +63,8 @@ static int setfl(int fd, struct file * f
+ 
+ 	if (filp->f_op->check_flags)
+ 		error = filp->f_op->check_flags(arg);
++	if (!error && filp->f_op->setfl)
++		error = filp->f_op->setfl(filp, arg);
+ 	if (error)
+ 		return error;
+ 
+diff -Nurp linux-5.4/fs/inode.c linux-5.4-aufs/fs/inode.c
+--- linux-5.4/fs/inode.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/inode.c	2019-11-28 01:25:59.070925617 +0200
+@@ -1673,7 +1673,7 @@ EXPORT_SYMBOL(generic_update_time);
+  * This does the actual work of updating an inodes time or version.  Must have
+  * had called mnt_want_write() before calling this.
+  */
+-static int update_time(struct inode *inode, struct timespec64 *time, int flags)
++int update_time(struct inode *inode, struct timespec64 *time, int flags)
+ {
+ 	int (*update_time)(struct inode *, struct timespec64 *, int);
+ 
+diff -Nurp linux-5.4/fs/Kconfig linux-5.4-aufs/fs/Kconfig
+--- linux-5.4/fs/Kconfig	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/Kconfig	2019-11-28 01:33:04.893908639 +0200
+@@ -121,6 +121,7 @@ source "fs/quota/Kconfig"
+ source "fs/autofs/Kconfig"
+ source "fs/fuse/Kconfig"
+ source "fs/overlayfs/Kconfig"
++source "fs/aufs/Kconfig"
+ 
+ menu "Caches"
+ 
+diff -Nurp linux-5.4/fs/Makefile linux-5.4-aufs/fs/Makefile
+--- linux-5.4/fs/Makefile	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/Makefile	2019-11-28 01:34:16.881905768 +0200
+@@ -110,6 +110,7 @@ obj-$(CONFIG_AUTOFS_FS)		+= autofs/
+ obj-$(CONFIG_ADFS_FS)		+= adfs/
+ obj-$(CONFIG_FUSE_FS)		+= fuse/
+ obj-$(CONFIG_OVERLAY_FS)	+= overlayfs/
++obj-$(CONFIG_AUFS_FS)		+= aufs/
+ obj-$(CONFIG_ORANGEFS_FS)       += orangefs/
+ obj-$(CONFIG_UDF_FS)		+= udf/
+ obj-$(CONFIG_SUN_OPENPROMFS)	+= openpromfs/
+diff -Nurp linux-5.4/fs/namespace.c linux-5.4-aufs/fs/namespace.c
+--- linux-5.4/fs/namespace.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/namespace.c	2019-11-28 01:25:59.070925617 +0200
+@@ -776,6 +776,12 @@ static inline int check_mnt(struct mount
+ 	return mnt->mnt_ns == current->nsproxy->mnt_ns;
+ }
+ 
++/* for aufs, CONFIG_AUFS_BR_FUSE */
++int is_current_mnt_ns(struct vfsmount *mnt)
++{
++	return check_mnt(real_mount(mnt));
++}
++
+ /*
+  * vfsmount lock must be held for write
+  */
+diff -Nurp linux-5.4/fs/proc/base.c linux-5.4-aufs/fs/proc/base.c
+--- linux-5.4/fs/proc/base.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/proc/base.c	2019-11-28 01:25:59.070925617 +0200
+@@ -2037,7 +2037,7 @@ static int map_files_get_link(struct den
+ 	rc = -ENOENT;
+ 	vma = find_exact_vma(mm, vm_start, vm_end);
+ 	if (vma && vma->vm_file) {
+-		*path = vma->vm_file->f_path;
++		*path = vma_pr_or_file(vma)->f_path;
+ 		path_get(path);
+ 		rc = 0;
+ 	}
+diff -Nurp linux-5.4/fs/proc/nommu.c linux-5.4-aufs/fs/proc/nommu.c
+--- linux-5.4/fs/proc/nommu.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/proc/nommu.c	2019-11-28 01:25:59.070925617 +0200
+@@ -41,7 +41,10 @@ static int nommu_region_show(struct seq_
+ 	file = region->vm_file;
+ 
+ 	if (file) {
+-		struct inode *inode = file_inode(region->vm_file);
++		struct inode *inode;
++
++		file = vmr_pr_or_file(region);
++		inode = file_inode(file);
+ 		dev = inode->i_sb->s_dev;
+ 		ino = inode->i_ino;
+ 	}
+diff -Nurp linux-5.4/fs/proc/task_mmu.c linux-5.4-aufs/fs/proc/task_mmu.c
+--- linux-5.4/fs/proc/task_mmu.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/proc/task_mmu.c	2019-11-28 01:25:59.070925617 +0200
+@@ -309,7 +309,10 @@ show_map_vma(struct seq_file *m, struct
+ 	const char *name = NULL;
+ 
+ 	if (file) {
+-		struct inode *inode = file_inode(vma->vm_file);
++		struct inode *inode;
++
++		file = vma_pr_or_file(vma);
++		inode = file_inode(file);
+ 		dev = inode->i_sb->s_dev;
+ 		ino = inode->i_ino;
+ 		pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
+@@ -1819,7 +1822,7 @@ static int show_numa_map(struct seq_file
+ 	struct proc_maps_private *proc_priv = &numa_priv->proc_maps;
+ 	struct vm_area_struct *vma = v;
+ 	struct numa_maps *md = &numa_priv->md;
+-	struct file *file = vma->vm_file;
++	struct file *file = vma_pr_or_file(vma);
+ 	struct mm_struct *mm = vma->vm_mm;
+ 	struct mempolicy *pol;
+ 	char buffer[64];
+diff -Nurp linux-5.4/fs/proc/task_nommu.c linux-5.4-aufs/fs/proc/task_nommu.c
+--- linux-5.4/fs/proc/task_nommu.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/proc/task_nommu.c	2019-11-28 01:25:59.070925617 +0200
+@@ -155,7 +155,10 @@ static int nommu_vma_show(struct seq_fil
+ 	file = vma->vm_file;
+ 
+ 	if (file) {
+-		struct inode *inode = file_inode(vma->vm_file);
++		struct inode *inode;
++
++		file = vma_pr_or_file(vma);
++		inode = file_inode(file);
+ 		dev = inode->i_sb->s_dev;
+ 		ino = inode->i_ino;
+ 		pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
+diff -Nurp linux-5.4/fs/read_write.c linux-5.4-aufs/fs/read_write.c
+--- linux-5.4/fs/read_write.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/read_write.c	2019-11-28 01:25:59.070925617 +0200
+@@ -498,6 +498,28 @@ static ssize_t __vfs_write(struct file *
+ 		return -EINVAL;
+ }
+ 
++vfs_readf_t vfs_readf(struct file *file)
++{
++	const struct file_operations *fop = file->f_op;
++
++	if (fop->read)
++		return fop->read;
++	if (fop->read_iter)
++		return new_sync_read;
++	return ERR_PTR(-ENOSYS);
++}
++
++vfs_writef_t vfs_writef(struct file *file)
++{
++	const struct file_operations *fop = file->f_op;
++
++	if (fop->write)
++		return fop->write;
++	if (fop->write_iter)
++		return new_sync_write;
++	return ERR_PTR(-ENOSYS);
++}
++
+ ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos)
+ {
+ 	mm_segment_t old_fs;
+diff -Nurp linux-5.4/fs/splice.c linux-5.4-aufs/fs/splice.c
+--- linux-5.4/fs/splice.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/splice.c	2019-11-28 01:25:59.071925617 +0200
+@@ -834,8 +834,8 @@ EXPORT_SYMBOL(generic_splice_sendpage);
+ /*
+  * Attempt to initiate a splice from pipe to file.
+  */
+-static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+-			   loff_t *ppos, size_t len, unsigned int flags)
++long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
++		    loff_t *ppos, size_t len, unsigned int flags)
+ {
+ 	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
+ 				loff_t *, size_t, unsigned int);
+@@ -851,9 +851,9 @@ static long do_splice_from(struct pipe_i
+ /*
+  * Attempt to initiate a splice from a file to a pipe.
+  */
+-static long do_splice_to(struct file *in, loff_t *ppos,
+-			 struct pipe_inode_info *pipe, size_t len,
+-			 unsigned int flags)
++long do_splice_to(struct file *in, loff_t *ppos,
++		  struct pipe_inode_info *pipe, size_t len,
++		  unsigned int flags)
+ {
+ 	ssize_t (*splice_read)(struct file *, loff_t *,
+ 			       struct pipe_inode_info *, size_t, unsigned int);
+diff -Nurp linux-5.4/fs/sync.c linux-5.4-aufs/fs/sync.c
+--- linux-5.4/fs/sync.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/fs/sync.c	2019-11-28 01:25:59.071925617 +0200
+@@ -28,7 +28,7 @@
+  * wait == 1 case since in that case write_inode() functions do
+  * sync_dirty_buffer() and thus effectively write one block at a time.
+  */
+-static int __sync_filesystem(struct super_block *sb, int wait)
++int __sync_filesystem(struct super_block *sb, int wait)
+ {
+ 	if (wait)
+ 		sync_inodes_sb(sb);
+diff -Nurp linux-5.4/include/linux/fs.h linux-5.4-aufs/include/linux/fs.h
+--- linux-5.4/include/linux/fs.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/fs.h	2019-11-28 01:25:59.071925617 +0200
+@@ -1349,6 +1349,7 @@ extern void fasync_free(struct fasync_st
+ /* can be called from interrupts */
+ extern void kill_fasync(struct fasync_struct **, int, int);
+ 
++extern int setfl(int fd, struct file * filp, unsigned long arg);
+ extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
+ extern int f_setown(struct file *filp, unsigned long arg, int force);
+ extern void f_delown(struct file *filp);
+@@ -1835,6 +1836,7 @@ struct file_operations {
+ 	ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
+ 	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+ 	int (*check_flags)(int);
++	int (*setfl)(struct file *, unsigned long);
+ 	int (*flock) (struct file *, int, struct file_lock *);
+ 	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+ 	ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
+@@ -1905,6 +1907,12 @@ ssize_t rw_copy_check_uvector(int type,
+ 			      struct iovec *fast_pointer,
+ 			      struct iovec **ret_pointer);
+ 
++typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *);
++typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t,
++				loff_t *);
++vfs_readf_t vfs_readf(struct file *file);
++vfs_writef_t vfs_writef(struct file *file);
++
+ extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
+ extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
+ extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
+@@ -2325,6 +2333,7 @@ extern int current_umask(void);
+ extern void ihold(struct inode * inode);
+ extern void iput(struct inode *);
+ extern int generic_update_time(struct inode *, struct timespec64 *, int);
++extern int update_time(struct inode *, struct timespec64 *, int);
+ 
+ /* /sys/fs */
+ extern struct kobject *fs_kobj;
+@@ -2613,6 +2622,7 @@ static inline bool sb_is_blkdev_sb(struc
+ 	return false;
+ }
+ #endif
++extern int __sync_filesystem(struct super_block *, int);
+ extern int sync_filesystem(struct super_block *);
+ extern const struct file_operations def_blk_fops;
+ extern const struct file_operations def_chr_fops;
+diff -Nurp linux-5.4/include/linux/lockdep.h linux-5.4-aufs/include/linux/lockdep.h
+--- linux-5.4/include/linux/lockdep.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/lockdep.h	2019-11-28 01:25:59.071925617 +0200
+@@ -331,6 +331,8 @@ static inline int lockdep_match_key(stru
+ 	return lock->key == key;
+ }
+ 
++struct lock_class *lockdep_hlock_class(struct held_lock *hlock);
++
+ /*
+  * Acquire a lock.
+  *
+@@ -473,6 +475,7 @@ struct lockdep_map { };
+ 
+ #define lockdep_depth(tsk)	(0)
+ 
++#define lockdep_is_held(lock)			(1)
+ #define lockdep_is_held_type(l, r)		(1)
+ 
+ #define lockdep_assert_held(l)			do { (void)(l); } while (0)
+diff -Nurp linux-5.4/include/linux/mm.h linux-5.4-aufs/include/linux/mm.h
+--- linux-5.4/include/linux/mm.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/mm.h	2019-11-28 01:25:59.071925617 +0200
+@@ -1510,6 +1510,28 @@ static inline void unmap_shared_mapping_
+ 	unmap_mapping_range(mapping, holebegin, holelen, 0);
+ }
+ 
++extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int);
++extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[],
++				      int);
++extern void vma_do_get_file(struct vm_area_struct *, const char[], int);
++extern void vma_do_fput(struct vm_area_struct *, const char[], int);
++
++#define vma_file_update_time(vma)	vma_do_file_update_time(vma, __func__, \
++								__LINE__)
++#define vma_pr_or_file(vma)		vma_do_pr_or_file(vma, __func__, \
++							  __LINE__)
++#define vma_get_file(vma)		vma_do_get_file(vma, __func__, __LINE__)
++#define vma_fput(vma)			vma_do_fput(vma, __func__, __LINE__)
++
++#ifndef CONFIG_MMU
++extern struct file *vmr_do_pr_or_file(struct vm_region *, const char[], int);
++extern void vmr_do_fput(struct vm_region *, const char[], int);
++
++#define vmr_pr_or_file(region)		vmr_do_pr_or_file(region, __func__, \
++							  __LINE__)
++#define vmr_fput(region)		vmr_do_fput(region, __func__, __LINE__)
++#endif /* !CONFIG_MMU */
++
+ extern int access_process_vm(struct task_struct *tsk, unsigned long addr,
+ 		void *buf, int len, unsigned int gup_flags);
+ extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
+diff -Nurp linux-5.4/include/linux/mm_types.h linux-5.4-aufs/include/linux/mm_types.h
+--- linux-5.4/include/linux/mm_types.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/mm_types.h	2019-11-28 01:25:59.071925617 +0200
+@@ -267,6 +267,7 @@ struct vm_region {
+ 	unsigned long	vm_top;		/* region allocated to here */
+ 	unsigned long	vm_pgoff;	/* the offset in vm_file corresponding to vm_start */
+ 	struct file	*vm_file;	/* the backing file or NULL */
++	struct file	*vm_prfile;	/* the virtual backing file or NULL */
+ 
+ 	int		vm_usage;	/* region usage count (access under nommu_region_sem) */
+ 	bool		vm_icache_flushed : 1; /* true if the icache has been flushed for
+@@ -341,6 +342,7 @@ struct vm_area_struct {
+ 	unsigned long vm_pgoff;		/* Offset (within vm_file) in PAGE_SIZE
+ 					   units */
+ 	struct file * vm_file;		/* File we map to (can be NULL). */
++	struct file *vm_prfile;		/* shadow of vm_file */
+ 	void * vm_private_data;		/* was vm_pte (shared mem) */
+ 
+ #ifdef CONFIG_SWAP
+diff -Nurp linux-5.4/include/linux/mnt_namespace.h linux-5.4-aufs/include/linux/mnt_namespace.h
+--- linux-5.4/include/linux/mnt_namespace.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/mnt_namespace.h	2019-11-28 01:25:59.071925617 +0200
+@@ -6,11 +6,14 @@
+ struct mnt_namespace;
+ struct fs_struct;
+ struct user_namespace;
++struct vfsmount;
+ 
+ extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
+ 		struct user_namespace *, struct fs_struct *);
+ extern void put_mnt_ns(struct mnt_namespace *ns);
+ 
++extern int is_current_mnt_ns(struct vfsmount *mnt);
++
+ extern const struct file_operations proc_mounts_operations;
+ extern const struct file_operations proc_mountinfo_operations;
+ extern const struct file_operations proc_mountstats_operations;
+diff -Nurp linux-5.4/include/linux/splice.h linux-5.4-aufs/include/linux/splice.h
+--- linux-5.4/include/linux/splice.h	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/include/linux/splice.h	2019-11-28 01:25:59.071925617 +0200
+@@ -87,4 +87,10 @@ extern void splice_shrink_spd(struct spl
+ 
+ extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
+ extern const struct pipe_buf_operations default_pipe_buf_ops;
++
++extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
++			   loff_t *ppos, size_t len, unsigned int flags);
++extern long do_splice_to(struct file *in, loff_t *ppos,
++			 struct pipe_inode_info *pipe, size_t len,
++			 unsigned int flags);
+ #endif
+diff -Nurp linux-5.4/include/uapi/linux/aufs_type.h linux-5.4-aufs/include/uapi/linux/aufs_type.h
+--- linux-5.4/include/uapi/linux/aufs_type.h	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/include/uapi/linux/aufs_type.h	2019-11-28 01:25:59.071925617 +0200
+@@ -0,0 +1,439 @@
++/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
++/*
++ * Copyright (C) 2005-2019 Junjiro R. Okajima
++ */
++
++#ifndef __AUFS_TYPE_H__
++#define __AUFS_TYPE_H__
++
++#define AUFS_NAME	"aufs"
++
++#ifdef __KERNEL__
++/*
++ * define it before including all other headers.
++ * sched.h may use pr_* macros before defining "current", so define the
++ * no-current version first, and re-define later.
++ */
++#define pr_fmt(fmt)	AUFS_NAME " %s:%d: " fmt, __func__, __LINE__
++#include <linux/sched.h>
++#undef pr_fmt
++#define pr_fmt(fmt) \
++		AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \
++		(int)sizeof(current->comm), current->comm, current->pid
++#else
++#include <stdint.h>
++#include <sys/types.h>
++#endif /* __KERNEL__ */
++
++#include <linux/limits.h>
++
++#define AUFS_VERSION	"5.4"
++
++/* todo? move this to linux-2.6.19/include/magic.h */
++#define AUFS_SUPER_MAGIC	('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
++
++/* ---------------------------------------------------------------------- */
++
++#ifdef CONFIG_AUFS_BRANCH_MAX_127
++typedef int8_t aufs_bindex_t;
++#define AUFS_BRANCH_MAX 127
++#else
++typedef int16_t aufs_bindex_t;
++#ifdef CONFIG_AUFS_BRANCH_MAX_511
++#define AUFS_BRANCH_MAX 511
++#elif defined(CONFIG_AUFS_BRANCH_MAX_1023)
++#define AUFS_BRANCH_MAX 1023
++#elif defined(CONFIG_AUFS_BRANCH_MAX_32767)
++#define AUFS_BRANCH_MAX 32767
++#endif
++#endif
++
++#ifdef __KERNEL__
++#ifndef AUFS_BRANCH_MAX
++#error unknown CONFIG_AUFS_BRANCH_MAX value
++#endif
++#endif /* __KERNEL__ */
++
++/* ---------------------------------------------------------------------- */
++
++#define AUFS_FSTYPE		AUFS_NAME
++
++#define AUFS_ROOT_INO		2
++#define AUFS_FIRST_INO		11
++
++#define AUFS_WH_PFX		".wh."
++#define AUFS_WH_PFX_LEN		((int)sizeof(AUFS_WH_PFX) - 1)
++#define AUFS_WH_TMP_LEN		4
++/* a limit for rmdir/rename a dir and copyup */
++#define AUFS_MAX_NAMELEN	(NAME_MAX \
++				- AUFS_WH_PFX_LEN * 2	/* doubly whiteouted */\
++				- 1			/* dot */\
++				- AUFS_WH_TMP_LEN)	/* hex */
++#define AUFS_XINO_FNAME		"." AUFS_NAME ".xino"
++#define AUFS_XINO_DEFPATH	"/tmp/" AUFS_XINO_FNAME
++#define AUFS_XINO_DEF_SEC	30 /* seconds */
++#define AUFS_XINO_DEF_TRUNC	45 /* percentage */
++#define AUFS_DIRWH_DEF		3
++#define AUFS_RDCACHE_DEF	10 /* seconds */
++#define AUFS_RDCACHE_MAX	3600 /* seconds */
++#define AUFS_RDBLK_DEF		512 /* bytes */
++#define AUFS_RDHASH_DEF		32
++#define AUFS_WKQ_NAME		AUFS_NAME "d"
++#define AUFS_MFS_DEF_SEC	30 /* seconds */
++#define AUFS_MFS_MAX_SEC	3600 /* seconds */
++#define AUFS_FHSM_CACHE_DEF_SEC	30 /* seconds */
++#define AUFS_PLINK_WARN		50 /* number of plinks in a single bucket */
++
++/* pseudo-link maintenace under /proc */
++#define AUFS_PLINK_MAINT_NAME	"plink_maint"
++#define AUFS_PLINK_MAINT_DIR	"fs/" AUFS_NAME
++#define AUFS_PLINK_MAINT_PATH	AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME
++
++/* dirren, renamed dir */
++#define AUFS_DR_INFO_PFX	AUFS_WH_PFX ".dr."
++#define AUFS_DR_BRHINO_NAME	AUFS_WH_PFX "hino"
++/* whiteouted doubly */
++#define AUFS_WH_DR_INFO_PFX	AUFS_WH_PFX AUFS_DR_INFO_PFX
++#define AUFS_WH_DR_BRHINO	AUFS_WH_PFX AUFS_DR_BRHINO_NAME
++
++#define AUFS_DIROPQ_NAME	AUFS_WH_PFX ".opq" /* whiteouted doubly */
++#define AUFS_WH_DIROPQ		AUFS_WH_PFX AUFS_DIROPQ_NAME
++
++#define AUFS_BASE_NAME		AUFS_WH_PFX AUFS_NAME
++#define AUFS_PLINKDIR_NAME	AUFS_WH_PFX "plnk"
++#define AUFS_ORPHDIR_NAME	AUFS_WH_PFX "orph"
++
++/* doubly whiteouted */
++#define AUFS_WH_BASE		AUFS_WH_PFX AUFS_BASE_NAME
++#define AUFS_WH_PLINKDIR	AUFS_WH_PFX AUFS_PLINKDIR_NAME
++#define AUFS_WH_ORPHDIR		AUFS_WH_PFX AUFS_ORPHDIR_NAME
++
++/* branch permissions and attributes */
++#define AUFS_BRPERM_RW		"rw"
++#define AUFS_BRPERM_RO		"ro"
++#define AUFS_BRPERM_RR		"rr"
++#define AUFS_BRATTR_COO_REG	"coo_reg"
++#define AUFS_BRATTR_COO_ALL	"coo_all"
++#define AUFS_BRATTR_FHSM	"fhsm"
++#define AUFS_BRATTR_UNPIN	"unpin"
++#define AUFS_BRATTR_ICEX	"icex"
++#define AUFS_BRATTR_ICEX_SEC	"icexsec"
++#define AUFS_BRATTR_ICEX_SYS	"icexsys"
++#define AUFS_BRATTR_ICEX_TR	"icextr"
++#define AUFS_BRATTR_ICEX_USR	"icexusr"
++#define AUFS_BRATTR_ICEX_OTH	"icexoth"
++#define AUFS_BRRATTR_WH		"wh"
++#define AUFS_BRWATTR_NLWH	"nolwh"
++#define AUFS_BRWATTR_MOO	"moo"
++
++#define AuBrPerm_RW		1		/* writable, hardlinkable wh */
++#define AuBrPerm_RO		(1 << 1)	/* readonly */
++#define AuBrPerm_RR		(1 << 2)	/* natively readonly */
++#define AuBrPerm_Mask		(AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR)
++
++#define AuBrAttr_COO_REG	(1 << 3)	/* copy-up on open */
++#define AuBrAttr_COO_ALL	(1 << 4)
++#define AuBrAttr_COO_Mask	(AuBrAttr_COO_REG | AuBrAttr_COO_ALL)
++
++#define AuBrAttr_FHSM		(1 << 5)	/* file-based hsm */
++#define AuBrAttr_UNPIN		(1 << 6)	/* rename-able top dir of
++						   branch. meaningless since
++						   linux-3.18-rc1 */
++
++/* ignore error in copying XATTR */
++#define AuBrAttr_ICEX_SEC	(1 << 7)
++#define AuBrAttr_ICEX_SYS	(1 << 8)
++#define AuBrAttr_ICEX_TR	(1 << 9)
++#define AuBrAttr_ICEX_USR	(1 << 10)
++#define AuBrAttr_ICEX_OTH	(1 << 11)
++#define AuBrAttr_ICEX		(AuBrAttr_ICEX_SEC	\
++				 | AuBrAttr_ICEX_SYS	\
++				 | AuBrAttr_ICEX_TR	\
++				 | AuBrAttr_ICEX_USR	\
++				 | AuBrAttr_ICEX_OTH)
++
++#define AuBrRAttr_WH		(1 << 12)	/* whiteout-able */
++#define AuBrRAttr_Mask		AuBrRAttr_WH
++
++#define AuBrWAttr_NoLinkWH	(1 << 13)	/* un-hardlinkable whiteouts */
++#define AuBrWAttr_MOO		(1 << 14)	/* move-up on open */
++#define AuBrWAttr_Mask		(AuBrWAttr_NoLinkWH | AuBrWAttr_MOO)
++
++#define AuBrAttr_CMOO_Mask	(AuBrAttr_COO_Mask | AuBrWAttr_MOO)
++
++/* #warning test userspace */
++#ifdef __KERNEL__
++#ifndef CONFIG_AUFS_FHSM
++#undef AuBrAttr_FHSM
++#define AuBrAttr_FHSM		0
++#endif
++#ifndef CONFIG_AUFS_XATTR
++#undef	AuBrAttr_ICEX
++#define AuBrAttr_ICEX		0
++#undef	AuBrAttr_ICEX_SEC
++#define AuBrAttr_ICEX_SEC	0
++#undef	AuBrAttr_ICEX_SYS
++#define AuBrAttr_ICEX_SYS	0
++#undef	AuBrAttr_ICEX_TR
++#define AuBrAttr_ICEX_TR	0
++#undef	AuBrAttr_ICEX_USR
++#define AuBrAttr_ICEX_USR	0
++#undef	AuBrAttr_ICEX_OTH
++#define AuBrAttr_ICEX_OTH	0
++#endif
++#endif
++
++/* the longest combination */
++/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */
++#define AuBrPermStrSz	sizeof(AUFS_BRPERM_RW			\
++			       "+" AUFS_BRATTR_COO_REG		\
++			       "+" AUFS_BRATTR_FHSM		\
++			       "+" AUFS_BRATTR_UNPIN		\
++			       "+" AUFS_BRATTR_ICEX_SEC		\
++			       "+" AUFS_BRATTR_ICEX_SYS		\
++			       "+" AUFS_BRATTR_ICEX_USR		\
++			       "+" AUFS_BRATTR_ICEX_OTH		\
++			       "+" AUFS_BRWATTR_NLWH)
++
++typedef struct {
++	char a[AuBrPermStrSz];
++} au_br_perm_str_t;
++
++static inline int au_br_writable(int brperm)
++{
++	return brperm & AuBrPerm_RW;
++}
++
++static inline int au_br_whable(int brperm)
++{
++	return brperm & (AuBrPerm_RW | AuBrRAttr_WH);
++}
++
++static inline int au_br_wh_linkable(int brperm)
++{
++	return !(brperm & AuBrWAttr_NoLinkWH);
++}
++
++static inline int au_br_cmoo(int brperm)
++{
++	return brperm & AuBrAttr_CMOO_Mask;
++}
++
++static inline int au_br_fhsm(int brperm)
++{
++	return brperm & AuBrAttr_FHSM;
++}
++
++/* ---------------------------------------------------------------------- */
++
++/* ioctl */
++enum {
++	/* readdir in userspace */
++	AuCtl_RDU,
++	AuCtl_RDU_INO,
++
++	AuCtl_WBR_FD,	/* pathconf wrapper */
++	AuCtl_IBUSY,	/* busy inode */
++	AuCtl_MVDOWN,	/* move-down */
++	AuCtl_BR,	/* info about branches */
++	AuCtl_FHSM_FD	/* connection for fhsm */
++};
++
++/* borrowed from linux/include/linux/kernel.h */
++#ifndef ALIGN
++#ifdef _GNU_SOURCE
++#define ALIGN(x, a)		__ALIGN_MASK(x, (typeof(x))(a)-1)
++#else
++#define ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
++#endif
++#define __ALIGN_MASK(x, mask)	(((x)+(mask))&~(mask))
++#endif
++
++/* borrowed from linux/include/linux/compiler-gcc3.h */
++#ifndef __aligned
++#define __aligned(x)			__attribute__((aligned(x)))
++#endif
++
++#ifdef __KERNEL__
++#ifndef __packed
++#define __packed			__attribute__((packed))
++#endif
++#endif
++
++struct au_rdu_cookie {
++	uint64_t	h_pos;
++	int16_t		bindex;
++	uint8_t		flags;
++	uint8_t		pad;
++	uint32_t	generation;
++} __aligned(8);
++
++struct au_rdu_ent {
++	uint64_t	ino;
++	int16_t		bindex;
++	uint8_t		type;
++	uint8_t		nlen;
++	uint8_t		wh;
++	char		name[0];
++} __aligned(8);
++
++static inline int au_rdu_len(int nlen)
++{
++	/* include the terminating NULL */
++	return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1,
++		     sizeof(uint64_t));
++}
++
++union au_rdu_ent_ul {
++	struct au_rdu_ent __user	*e;
++	uint64_t			ul;
++};
++
++enum {
++	AufsCtlRduV_SZ,
++	AufsCtlRduV_End
++};
++
++struct aufs_rdu {
++	/* input */
++	union {
++		uint64_t	sz;	/* AuCtl_RDU */
++		uint64_t	nent;	/* AuCtl_RDU_INO */
++	};
++	union au_rdu_ent_ul	ent;
++	uint16_t		verify[AufsCtlRduV_End];
++
++	/* input/output */
++	uint32_t		blk;
++
++	/* output */
++	union au_rdu_ent_ul	tail;
++	/* number of entries which were added in a single call */
++	uint64_t		rent;
++	uint8_t			full;
++	uint8_t			shwh;
++
++	struct au_rdu_cookie	cookie;
++} __aligned(8);
++
++/* ---------------------------------------------------------------------- */
++
++/* dirren. the branch is identified by the filename who contains this */
++struct au_drinfo {
++	uint64_t ino;
++	union {
++		uint8_t oldnamelen;
++		uint64_t _padding;
++	};
++	uint8_t oldname[0];
++} __aligned(8);
++
++struct au_drinfo_fdata {
++	uint32_t magic;
++	struct au_drinfo drinfo;
++} __aligned(8);
++
++#define AUFS_DRINFO_MAGIC_V1	('a' << 24 | 'd' << 16 | 'r' << 8 | 0x01)
++/* future */
++#define AUFS_DRINFO_MAGIC_V2	('a' << 24 | 'd' << 16 | 'r' << 8 | 0x02)
++
++/* ---------------------------------------------------------------------- */
++
++struct aufs_wbr_fd {
++	uint32_t	oflags;
++	int16_t		brid;
++} __aligned(8);
++
++/* ---------------------------------------------------------------------- */
++
++struct aufs_ibusy {
++	uint64_t	ino, h_ino;
++	int16_t		bindex;
++} __aligned(8);
++
++/* ---------------------------------------------------------------------- */
++
++/* error code for move-down */
++/* the actual message strings are implemented in aufs-util.git */
++enum {
++	EAU_MVDOWN_OPAQUE = 1,
++	EAU_MVDOWN_WHITEOUT,
++	EAU_MVDOWN_UPPER,
++	EAU_MVDOWN_BOTTOM,
++	EAU_MVDOWN_NOUPPER,
++	EAU_MVDOWN_NOLOWERBR,
++	EAU_Last
++};
++
++/* flags for move-down */
++#define AUFS_MVDOWN_DMSG	1
++#define AUFS_MVDOWN_OWLOWER	(1 << 1)	/* overwrite lower */
++#define AUFS_MVDOWN_KUPPER	(1 << 2)	/* keep upper */
++#define AUFS_MVDOWN_ROLOWER	(1 << 3)	/* do even if lower is RO */
++#define AUFS_MVDOWN_ROLOWER_R	(1 << 4)	/* did on lower RO */
++#define AUFS_MVDOWN_ROUPPER	(1 << 5)	/* do even if upper is RO */
++#define AUFS_MVDOWN_ROUPPER_R	(1 << 6)	/* did on upper RO */
++#define AUFS_MVDOWN_BRID_UPPER	(1 << 7)	/* upper brid */
++#define AUFS_MVDOWN_BRID_LOWER	(1 << 8)	/* lower brid */
++#define AUFS_MVDOWN_FHSM_LOWER	(1 << 9)	/* find fhsm attr for lower */
++#define AUFS_MVDOWN_STFS	(1 << 10)	/* req. stfs */
++#define AUFS_MVDOWN_STFS_FAILED	(1 << 11)	/* output: stfs is unusable */
++#define AUFS_MVDOWN_BOTTOM	(1 << 12)	/* output: no more lowers */
++
++/* index for move-down */
++enum {
++	AUFS_MVDOWN_UPPER,
++	AUFS_MVDOWN_LOWER,
++	AUFS_MVDOWN_NARRAY
++};
++
++/*
++ * additional info of move-down
++ * number of free blocks and inodes.
++ * subset of struct kstatfs, but smaller and always 64bit.
++ */
++struct aufs_stfs {
++	uint64_t	f_blocks;
++	uint64_t	f_bavail;
++	uint64_t	f_files;
++	uint64_t	f_ffree;
++};
++
++struct aufs_stbr {
++	int16_t			brid;	/* optional input */
++	int16_t			bindex;	/* output */
++	struct aufs_stfs	stfs;	/* output when AUFS_MVDOWN_STFS set */
++} __aligned(8);
++
++struct aufs_mvdown {
++	uint32_t		flags;			/* input/output */
++	struct aufs_stbr	stbr[AUFS_MVDOWN_NARRAY]; /* input/output */
++	int8_t			au_errno;		/* output */
++} __aligned(8);
++
++/* ---------------------------------------------------------------------- */
++
++union aufs_brinfo {
++	/* PATH_MAX may differ between kernel-space and user-space */
++	char	_spacer[4096];
++	struct {
++		int16_t	id;
++		int	perm;
++		char	path[0];
++	};
++} __aligned(8);
++
++/* ---------------------------------------------------------------------- */
++
++#define AuCtlType		'A'
++#define AUFS_CTL_RDU		_IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu)
++#define AUFS_CTL_RDU_INO	_IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu)
++#define AUFS_CTL_WBR_FD		_IOW(AuCtlType, AuCtl_WBR_FD, \
++				     struct aufs_wbr_fd)
++#define AUFS_CTL_IBUSY		_IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy)
++#define AUFS_CTL_MVDOWN		_IOWR(AuCtlType, AuCtl_MVDOWN, \
++				      struct aufs_mvdown)
++#define AUFS_CTL_BRINFO		_IOW(AuCtlType, AuCtl_BR, union aufs_brinfo)
++#define AUFS_CTL_FHSM_FD	_IOW(AuCtlType, AuCtl_FHSM_FD, int)
++
++#endif /* __AUFS_TYPE_H__ */
+diff -Nurp linux-5.4/kernel/fork.c linux-5.4-aufs/kernel/fork.c
+--- linux-5.4/kernel/fork.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/kernel/fork.c	2019-11-28 01:25:59.072925617 +0200
+@@ -562,7 +562,7 @@ static __latent_entropy int dup_mmap(str
+ 			struct inode *inode = file_inode(file);
+ 			struct address_space *mapping = file->f_mapping;
+ 
+-			get_file(file);
++			vma_get_file(tmp);
+ 			if (tmp->vm_flags & VM_DENYWRITE)
+ 				atomic_dec(&inode->i_writecount);
+ 			i_mmap_lock_write(mapping);
+diff -Nurp linux-5.4/kernel/locking/lockdep.c linux-5.4-aufs/kernel/locking/lockdep.c
+--- linux-5.4/kernel/locking/lockdep.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/kernel/locking/lockdep.c	2019-11-28 01:25:59.072925617 +0200
+@@ -153,7 +153,7 @@ static
+ struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
+ static DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS);
+ 
+-static inline struct lock_class *hlock_class(struct held_lock *hlock)
++inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
+ {
+ 	unsigned int class_idx = hlock->class_idx;
+ 
+@@ -174,6 +174,7 @@ static inline struct lock_class *hlock_c
+ 	 */
+ 	return lock_classes + class_idx;
+ }
++#define hlock_class(hlock) lockdep_hlock_class(hlock)
+ 
+ #ifdef CONFIG_LOCK_STAT
+ static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats);
+diff -Nurp linux-5.4/MAINTAINERS linux-5.4-aufs/MAINTAINERS
+--- linux-5.4/MAINTAINERS	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/MAINTAINERS	2019-11-28 01:25:59.062925618 +0200
+@@ -2832,6 +2832,19 @@ F:	include/linux/audit.h
+ F:	include/uapi/linux/audit.h
+ F:	kernel/audit*
+ 
++AUFS (advanced multi layered unification filesystem) FILESYSTEM
++M:	"J. R. Okajima" <hooanon05g@gmail.com>
++L:	aufs-users@lists.sourceforge.net (members only)
++L:	linux-unionfs@vger.kernel.org
++W:	http://aufs.sourceforge.net
++T:	git://github.com/sfjro/aufs4-linux.git
++S:	Supported
++F:	Documentation/filesystems/aufs/
++F:	Documentation/ABI/testing/debugfs-aufs
++F:	Documentation/ABI/testing/sysfs-aufs
++F:	fs/aufs/
++F:	include/uapi/linux/aufs_type.h
++
+ AUXILIARY DISPLAY DRIVERS
+ M:	Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
+ S:	Maintained
+diff -Nurp linux-5.4/mm/filemap.c linux-5.4-aufs/mm/filemap.c
+--- linux-5.4/mm/filemap.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/mm/filemap.c	2019-11-28 01:25:59.072925617 +0200
+@@ -2696,7 +2696,7 @@ vm_fault_t filemap_page_mkwrite(struct v
+ 	vm_fault_t ret = VM_FAULT_LOCKED;
+ 
+ 	sb_start_pagefault(inode->i_sb);
+-	file_update_time(vmf->vma->vm_file);
++	vma_file_update_time(vmf->vma);
+ 	lock_page(page);
+ 	if (page->mapping != inode->i_mapping) {
+ 		unlock_page(page);
+diff -Nurp linux-5.4/mm/Makefile linux-5.4-aufs/mm/Makefile
+--- linux-5.4/mm/Makefile	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/mm/Makefile	2019-11-28 01:25:59.072925617 +0200
+@@ -42,7 +42,7 @@ obj-y			:= filemap.o mempool.o oom_kill.
+ 			   mm_init.o mmu_context.o percpu.o slab_common.o \
+ 			   compaction.o vmacache.o \
+ 			   interval_tree.o list_lru.o workingset.o \
+-			   debug.o gup.o $(mmu-y)
++			   prfile.o debug.o gup.o $(mmu-y)
+ 
+ # Give 'page_alloc' its own module-parameter namespace
+ page-alloc-y := page_alloc.o
+diff -Nurp linux-5.4/mm/mmap.c linux-5.4-aufs/mm/mmap.c
+--- linux-5.4/mm/mmap.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/mm/mmap.c	2019-11-28 01:25:59.073925617 +0200
+@@ -182,7 +182,7 @@ static struct vm_area_struct *remove_vma
+ 	if (vma->vm_ops && vma->vm_ops->close)
+ 		vma->vm_ops->close(vma);
+ 	if (vma->vm_file)
+-		fput(vma->vm_file);
++		vma_fput(vma);
+ 	mpol_put(vma_policy(vma));
+ 	vm_area_free(vma);
+ 	return next;
+@@ -940,7 +940,7 @@ again:
+ 	if (remove_next) {
+ 		if (file) {
+ 			uprobe_munmap(next, next->vm_start, next->vm_end);
+-			fput(file);
++			vma_fput(vma);
+ 		}
+ 		if (next->anon_vma)
+ 			anon_vma_merge(vma, next);
+@@ -1865,8 +1865,8 @@ out:
+ 	return addr;
+ 
+ unmap_and_free_vma:
++	vma_fput(vma);
+ 	vma->vm_file = NULL;
+-	fput(file);
+ 
+ 	/* Undo any partial mapping done by a device driver. */
+ 	unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
+@@ -2695,7 +2695,7 @@ int __split_vma(struct mm_struct *mm, st
+ 		goto out_free_mpol;
+ 
+ 	if (new->vm_file)
+-		get_file(new->vm_file);
++		vma_get_file(new);
+ 
+ 	if (new->vm_ops && new->vm_ops->open)
+ 		new->vm_ops->open(new);
+@@ -2714,7 +2714,7 @@ int __split_vma(struct mm_struct *mm, st
+ 	if (new->vm_ops && new->vm_ops->close)
+ 		new->vm_ops->close(new);
+ 	if (new->vm_file)
+-		fput(new->vm_file);
++		vma_fput(new);
+ 	unlink_anon_vmas(new);
+  out_free_mpol:
+ 	mpol_put(vma_policy(new));
+@@ -2906,7 +2906,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsign
+ 	struct vm_area_struct *vma;
+ 	unsigned long populate = 0;
+ 	unsigned long ret = -EINVAL;
+-	struct file *file;
++	struct file *file, *prfile;
+ 
+ 	pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n",
+ 		     current->comm, current->pid);
+@@ -2981,10 +2981,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsign
+ 		}
+ 	}
+ 
+-	file = get_file(vma->vm_file);
++	vma_get_file(vma);
++	file = vma->vm_file;
++	prfile = vma->vm_prfile;
+ 	ret = do_mmap_pgoff(vma->vm_file, start, size,
+ 			prot, flags, pgoff, &populate, NULL);
++	if (!IS_ERR_VALUE(ret) && file && prfile) {
++		struct vm_area_struct *new_vma;
++
++		new_vma = find_vma(mm, ret);
++		if (!new_vma->vm_prfile)
++			new_vma->vm_prfile = prfile;
++		if (new_vma != vma)
++			get_file(prfile);
++	}
++	/*
++	 * two fput()s instead of vma_fput(vma),
++	 * coz vma may not be available anymore.
++	 */
+ 	fput(file);
++	if (prfile)
++		fput(prfile);
+ out:
+ 	up_write(&mm->mmap_sem);
+ 	if (populate)
+@@ -3274,7 +3291,7 @@ struct vm_area_struct *copy_vma(struct v
+ 		if (anon_vma_clone(new_vma, vma))
+ 			goto out_free_mempol;
+ 		if (new_vma->vm_file)
+-			get_file(new_vma->vm_file);
++			vma_get_file(new_vma);
+ 		if (new_vma->vm_ops && new_vma->vm_ops->open)
+ 			new_vma->vm_ops->open(new_vma);
+ 		vma_link(mm, new_vma, prev, rb_link, rb_parent);
+diff -Nurp linux-5.4/mm/nommu.c linux-5.4-aufs/mm/nommu.c
+--- linux-5.4/mm/nommu.c	2019-11-25 02:32:01.000000000 +0200
++++ linux-5.4-aufs/mm/nommu.c	2019-11-28 01:25:59.073925617 +0200
+@@ -552,7 +552,7 @@ static void __put_nommu_region(struct vm
+ 		up_write(&nommu_region_sem);
+ 
+ 		if (region->vm_file)
+-			fput(region->vm_file);
++			vmr_fput(region);
+ 
+ 		/* IO memory and memory shared directly out of the pagecache
+ 		 * from ramfs/tmpfs mustn't be released here */
+@@ -690,7 +690,7 @@ static void delete_vma(struct mm_struct
+ 	if (vma->vm_ops && vma->vm_ops->close)
+ 		vma->vm_ops->close(vma);
+ 	if (vma->vm_file)
+-		fput(vma->vm_file);
++		vma_fput(vma);
+ 	put_nommu_region(vma->vm_region);
+ 	vm_area_free(vma);
+ }
+@@ -1213,7 +1213,7 @@ unsigned long do_mmap(struct file *file,
+ 					goto error_just_free;
+ 				}
+ 			}
+-			fput(region->vm_file);
++			vmr_fput(region);
+ 			kmem_cache_free(vm_region_jar, region);
+ 			region = pregion;
+ 			result = start;
+@@ -1290,10 +1290,10 @@ error_just_free:
+ 	up_write(&nommu_region_sem);
+ error:
+ 	if (region->vm_file)
+-		fput(region->vm_file);
++		vmr_fput(region);
+ 	kmem_cache_free(vm_region_jar, region);
+ 	if (vma->vm_file)
+-		fput(vma->vm_file);
++		vma_fput(vma);
+ 	vm_area_free(vma);
+ 	return ret;
+ 
+diff -Nurp linux-5.4/mm/prfile.c linux-5.4-aufs/mm/prfile.c
+--- linux-5.4/mm/prfile.c	1970-01-01 02:00:00.000000000 +0200
++++ linux-5.4-aufs/mm/prfile.c	2019-11-28 01:25:59.073925617 +0200
+@@ -0,0 +1,86 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Mainly for aufs which mmap(2) different file and wants to print different
++ * path in /proc/PID/maps.
++ * Call these functions via macros defined in linux/mm.h.
++ *
++ * See Documentation/filesystems/aufs/design/06mmap.txt
++ *
++ * Copyright (c) 2014-2019 Junjro R. Okajima
++ * Copyright (c) 2014 Ian Campbell
++ */
++
++#include <linux/mm.h>
++#include <linux/file.h>
++#include <linux/fs.h>
++
++/* #define PRFILE_TRACE */
++static inline void prfile_trace(struct file *f, struct file *pr,
++			      const char func[], int line, const char func2[])
++{
++#ifdef PRFILE_TRACE
++	if (pr)
++		pr_info("%s:%d: %s, %pD2\n", func, line, func2, f);
++#endif
++}
++
++void vma_do_file_update_time(struct vm_area_struct *vma, const char func[],
++			     int line)
++{
++	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	file_update_time(f);
++	if (f && pr)
++		file_update_time(pr);
++}
++
++struct file *vma_do_pr_or_file(struct vm_area_struct *vma, const char func[],
++			       int line)
++{
++	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	return (f && pr) ? pr : f;
++}
++
++void vma_do_get_file(struct vm_area_struct *vma, const char func[], int line)
++{
++	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	get_file(f);
++	if (f && pr)
++		get_file(pr);
++}
++
++void vma_do_fput(struct vm_area_struct *vma, const char func[], int line)
++{
++	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	fput(f);
++	if (f && pr)
++		fput(pr);
++}
++
++#ifndef CONFIG_MMU
++struct file *vmr_do_pr_or_file(struct vm_region *region, const char func[],
++			       int line)
++{
++	struct file *f = region->vm_file, *pr = region->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	return (f && pr) ? pr : f;
++}
++
++void vmr_do_fput(struct vm_region *region, const char func[], int line)
++{
++	struct file *f = region->vm_file, *pr = region->vm_prfile;
++
++	prfile_trace(f, pr, func, line, __func__);
++	fput(f);
++	if (f && pr)
++		fput(pr);
++}
++#endif /* !CONFIG_MMU */
diff --git a/kernel/kernel/files/patches/mageia/fs-vboxsf.patch b/kernel/kernel/files/patches/mageia/fs-vboxsf.patch
new file mode 100644
index 00000000..434fdee6
--- /dev/null
+++ b/kernel/kernel/files/patches/mageia/fs-vboxsf.patch
@@ -0,0 +1,3410 @@
+From df4028658f9dd7f82fd190e9db5bd82c05f94625 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 28 Oct 2019 12:17:44 +0100
+Subject: staging: Add VirtualBox guest shared folder (vboxsf) support
+
+VirtualBox hosts can share folders with guests, this commit adds a
+VFS driver implementing the Linux-guest side of this, allowing folders
+exported by the host to be mounted under Linux.
+
+This driver depends on the guest <-> host IPC functions exported by
+the vboxguest driver.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Link: https://lore.kernel.org/r/20191028111744.143863-2-hdegoede@redhat.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ MAINTAINERS                              |   6 +
+ drivers/staging/Kconfig                  |   2 +
+ drivers/staging/Makefile                 |   1 +
+ drivers/staging/vboxsf/Kconfig           |  10 +
+ drivers/staging/vboxsf/Makefile          |   5 +
+ drivers/staging/vboxsf/TODO              |   7 +
+ drivers/staging/vboxsf/dir.c             | 418 ++++++++++++++
+ drivers/staging/vboxsf/file.c            | 370 +++++++++++++
+ drivers/staging/vboxsf/shfl_hostintf.h   | 901 +++++++++++++++++++++++++++++++
+ drivers/staging/vboxsf/super.c           | 499 +++++++++++++++++
+ drivers/staging/vboxsf/utils.c           | 550 +++++++++++++++++++
+ drivers/staging/vboxsf/vboxsf_wrappers.c | 371 +++++++++++++
+ drivers/staging/vboxsf/vfsmod.h          | 138 +++++
+ 13 files changed, 3278 insertions(+)
+ create mode 100644 drivers/staging/vboxsf/Kconfig
+ create mode 100644 drivers/staging/vboxsf/Makefile
+ create mode 100644 drivers/staging/vboxsf/TODO
+ create mode 100644 drivers/staging/vboxsf/dir.c
+ create mode 100644 drivers/staging/vboxsf/file.c
+ create mode 100644 drivers/staging/vboxsf/shfl_hostintf.h
+ create mode 100644 drivers/staging/vboxsf/super.c
+ create mode 100644 drivers/staging/vboxsf/utils.c
+ create mode 100644 drivers/staging/vboxsf/vboxsf_wrappers.c
+ create mode 100644 drivers/staging/vboxsf/vfsmod.h
+
+diff --git a/MAINTAINERS b/MAINTAINERS
+index c6c34d04ce95..71789e42ed17 100644
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -17335,6 +17335,12 @@ F:	include/linux/vbox_utils.h
+ F:	include/uapi/linux/vbox*.h
+ F:	drivers/virt/vboxguest/
+ 
++VIRTUAL BOX SHARED FOLDER VFS DRIVER:
++M:	Hans de Goede <hdegoede@redhat.com>
++L:	linux-fsdevel@vger.kernel.org
++S:	Maintained
++F:	drivers/staging/vboxsf/*
++
+ VIRTUAL SERIO DEVICE DRIVER
+ M:	Stephen Chandler Paul <thatslyude@gmail.com>
+ S:	Maintained
+diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
+index 6f1fa4c849a1..927d29eb92c6 100644
+--- a/drivers/staging/Kconfig
++++ b/drivers/staging/Kconfig
+@@ -125,4 +125,6 @@ source "drivers/staging/exfat/Kconfig"
+ 
+ source "drivers/staging/qlge/Kconfig"
+ 
++source "drivers/staging/vboxsf/Kconfig"
++
+ endif # STAGING
+diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
+index a90f9b308c8d..f01f04199073 100644
+--- a/drivers/staging/Makefile
++++ b/drivers/staging/Makefile
+@@ -53,3 +53,4 @@ obj-$(CONFIG_UWB)		+= uwb/
+ obj-$(CONFIG_USB_WUSB)		+= wusbcore/
+ obj-$(CONFIG_EXFAT_FS)		+= exfat/
+ obj-$(CONFIG_QLGE)		+= qlge/
++obj-$(CONFIG_VBOXSF_FS)		+= vboxsf/
+diff --git a/drivers/staging/vboxsf/Kconfig b/drivers/staging/vboxsf/Kconfig
+new file mode 100644
+index 000000000000..b84586ae08b3
+--- /dev/null
++++ b/drivers/staging/vboxsf/Kconfig
+@@ -0,0 +1,10 @@
++config VBOXSF_FS
++	tristate "VirtualBox guest shared folder (vboxsf) support"
++	depends on X86 && VBOXGUEST
++	select NLS
++	help
++	  VirtualBox hosts can share folders with guests, this driver
++	  implements the Linux-guest side of this allowing folders exported
++	  by the host to be mounted under Linux.
++
++	  If you want to use shared folders in VirtualBox guests, answer Y or M.
+diff --git a/drivers/staging/vboxsf/Makefile b/drivers/staging/vboxsf/Makefile
+new file mode 100644
+index 000000000000..9e4328e79623
+--- /dev/null
++++ b/drivers/staging/vboxsf/Makefile
+@@ -0,0 +1,5 @@
++# SPDX-License-Identifier: MIT
++
++obj-$(CONFIG_VBOXSF_FS) += vboxsf.o
++
++vboxsf-y := dir.o file.o utils.o vboxsf_wrappers.o super.o
+diff --git a/drivers/staging/vboxsf/TODO b/drivers/staging/vboxsf/TODO
+new file mode 100644
+index 000000000000..8b9193d0d4f0
+--- /dev/null
++++ b/drivers/staging/vboxsf/TODO
+@@ -0,0 +1,7 @@
++TODO:
++- Find a file-system developer to review this and give their Reviewed-By
++- Address any items coming up during review
++- Move to fs/vboxfs
++
++Please send any patches to Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++and Hans de Goede <hdegoede@redhat.com>
+diff --git a/drivers/staging/vboxsf/dir.c b/drivers/staging/vboxsf/dir.c
+new file mode 100644
+index 000000000000..f260b5cc1646
+--- /dev/null
++++ b/drivers/staging/vboxsf/dir.c
+@@ -0,0 +1,418 @@
++// SPDX-License-Identifier: MIT
++/*
++ * VirtualBox Guest Shared Folders support: Directory inode and file operations
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#include <linux/namei.h>
++#include <linux/vbox_utils.h>
++#include "vfsmod.h"
++
++static int vboxsf_dir_open(struct inode *inode, struct file *file)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(inode->i_sb);
++	struct shfl_createparms params = {};
++	struct vboxsf_dir_info *sf_d;
++	int err;
++
++	sf_d = vboxsf_dir_info_alloc();
++	if (!sf_d)
++		return -ENOMEM;
++
++	params.handle = SHFL_HANDLE_NIL;
++	params.create_flags = SHFL_CF_DIRECTORY | SHFL_CF_ACT_OPEN_IF_EXISTS |
++			      SHFL_CF_ACT_FAIL_IF_NEW | SHFL_CF_ACCESS_READ;
++
++	err = vboxsf_create_at_dentry(file_dentry(file), &params);
++	if (err)
++		goto err_free_dir_info;
++
++	if (params.result != SHFL_FILE_EXISTS) {
++		err = -ENOENT;
++		goto err_close;
++	}
++
++	err = vboxsf_dir_read_all(sbi, sf_d, params.handle);
++	if (err)
++		goto err_close;
++
++	vboxsf_close(sbi->root, params.handle);
++	file->private_data = sf_d;
++	return 0;
++
++err_close:
++	vboxsf_close(sbi->root, params.handle);
++err_free_dir_info:
++	vboxsf_dir_info_free(sf_d);
++	return err;
++}
++
++static int vboxsf_dir_release(struct inode *inode, struct file *file)
++{
++	if (file->private_data)
++		vboxsf_dir_info_free(file->private_data);
++
++	return 0;
++}
++
++static unsigned int vboxsf_get_d_type(u32 mode)
++{
++	unsigned int d_type;
++
++	switch (mode & SHFL_TYPE_MASK) {
++	case SHFL_TYPE_FIFO:
++		d_type = DT_FIFO;
++		break;
++	case SHFL_TYPE_DEV_CHAR:
++		d_type = DT_CHR;
++		break;
++	case SHFL_TYPE_DIRECTORY:
++		d_type = DT_DIR;
++		break;
++	case SHFL_TYPE_DEV_BLOCK:
++		d_type = DT_BLK;
++		break;
++	case SHFL_TYPE_FILE:
++		d_type = DT_REG;
++		break;
++	case SHFL_TYPE_SYMLINK:
++		d_type = DT_LNK;
++		break;
++	case SHFL_TYPE_SOCKET:
++		d_type = DT_SOCK;
++		break;
++	case SHFL_TYPE_WHITEOUT:
++		d_type = DT_WHT;
++		break;
++	default:
++		d_type = DT_UNKNOWN;
++		break;
++	}
++	return d_type;
++}
++
++static bool vboxsf_dir_emit(struct file *dir, struct dir_context *ctx)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(file_inode(dir)->i_sb);
++	struct vboxsf_dir_info *sf_d = dir->private_data;
++	struct shfl_dirinfo *info;
++	struct vboxsf_dir_buf *b;
++	unsigned int d_type;
++	loff_t i, cur = 0;
++	ino_t fake_ino;
++	size_t size;
++	int err;
++
++	list_for_each_entry(b, &sf_d->info_list, head) {
++try_next_entry:
++		if (ctx->pos >= cur + b->entries) {
++			cur += b->entries;
++			continue;
++		}
++
++		/*
++		 * Note the vboxsf_dir_info objects we are iterating over here
++		 * are variable sized, so the info pointer may end up being
++		 * unaligned. This is how we get the data from the host.
++		 * Since vboxsf is only supported on x86 machines this is not
++		 * a problem.
++		 */
++		for (i = 0, info = b->buf; i < ctx->pos - cur; i++) {
++			size = offsetof(struct shfl_dirinfo, name.string) +
++			       info->name.size;
++			info = (struct shfl_dirinfo *)((uintptr_t)info + size);
++		}
++
++		/* Info now points to the right entry, emit it. */
++		d_type = vboxsf_get_d_type(info->info.attr.mode);
++
++		/*
++		 * On 32 bit systems pos is 64 signed, while ino is 32 bit
++		 * unsigned so fake_ino may overflow, check for this.
++		 */
++		if ((ino_t)(ctx->pos + 1) != (u64)(ctx->pos + 1)) {
++			vbg_err("vboxsf: fake ino overflow, truncating dir\n");
++			return false;
++		}
++		fake_ino = ctx->pos + 1;
++
++		if (sbi->nls) {
++			char d_name[NAME_MAX];
++
++			err = vboxsf_nlscpy(sbi, d_name, NAME_MAX,
++					    info->name.string.utf8,
++					    info->name.length);
++			if (err) {
++				/* skip erroneous entry and proceed */
++				ctx->pos += 1;
++				goto try_next_entry;
++			}
++
++			return dir_emit(ctx, d_name, strlen(d_name),
++					fake_ino, d_type);
++		}
++
++		return dir_emit(ctx, info->name.string.utf8, info->name.length,
++				fake_ino, d_type);
++	}
++
++	return false;
++}
++
++static int vboxsf_dir_iterate(struct file *dir, struct dir_context *ctx)
++{
++	bool keep_iterating;
++
++	for (keep_iterating = true; keep_iterating; ctx->pos += 1)
++		keep_iterating = vboxsf_dir_emit(dir, ctx);
++
++	return 0;
++}
++
++const struct file_operations vboxsf_dir_fops = {
++	.open = vboxsf_dir_open,
++	.iterate = vboxsf_dir_iterate,
++	.release = vboxsf_dir_release,
++	.read = generic_read_dir,
++	.llseek = generic_file_llseek,
++};
++
++/*
++ * This is called during name resolution/lookup to check if the @dentry in
++ * the cache is still valid. the job is handled by vboxsf_inode_revalidate.
++ */
++static int vboxsf_dentry_revalidate(struct dentry *dentry, unsigned int flags)
++{
++	if (flags & LOOKUP_RCU)
++		return -ECHILD;
++
++	if (d_really_is_positive(dentry))
++		return vboxsf_inode_revalidate(dentry) == 0;
++	else
++		return vboxsf_stat_dentry(dentry, NULL) == -ENOENT;
++}
++
++const struct dentry_operations vboxsf_dentry_ops = {
++	.d_revalidate = vboxsf_dentry_revalidate
++};
++
++/* iops */
++
++static struct dentry *vboxsf_dir_lookup(struct inode *parent,
++					struct dentry *dentry,
++					unsigned int flags)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
++	struct shfl_fsobjinfo fsinfo;
++	struct inode *inode;
++	int err;
++
++	dentry->d_time = jiffies;
++
++	err = vboxsf_stat_dentry(dentry, &fsinfo);
++	if (err) {
++		inode = (err == -ENOENT) ? NULL : ERR_PTR(err);
++	} else {
++		inode = vboxsf_new_inode(parent->i_sb);
++		if (!IS_ERR(inode))
++			vboxsf_init_inode(sbi, inode, &fsinfo);
++	}
++
++	return d_splice_alias(inode, dentry);
++}
++
++static int vboxsf_dir_instantiate(struct inode *parent, struct dentry *dentry,
++				  struct shfl_fsobjinfo *info)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
++	struct vboxsf_inode *sf_i;
++	struct inode *inode;
++
++	inode = vboxsf_new_inode(parent->i_sb);
++	if (IS_ERR(inode))
++		return PTR_ERR(inode);
++
++	sf_i = VBOXSF_I(inode);
++	/* The host may have given us different attr then requested */
++	sf_i->force_restat = 1;
++	vboxsf_init_inode(sbi, inode, info);
++
++	d_instantiate(dentry, inode);
++
++	return 0;
++}
++
++static int vboxsf_dir_create(struct inode *parent, struct dentry *dentry,
++			     umode_t mode, int is_dir)
++{
++	struct vboxsf_inode *sf_parent_i = VBOXSF_I(parent);
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
++	struct shfl_createparms params = {};
++	int err;
++
++	params.handle = SHFL_HANDLE_NIL;
++	params.create_flags = SHFL_CF_ACT_CREATE_IF_NEW |
++			      SHFL_CF_ACT_FAIL_IF_EXISTS |
++			      SHFL_CF_ACCESS_READWRITE |
++			      (is_dir ? SHFL_CF_DIRECTORY : 0);
++	params.info.attr.mode = (mode & 0777) |
++				(is_dir ? SHFL_TYPE_DIRECTORY : SHFL_TYPE_FILE);
++	params.info.attr.additional = SHFLFSOBJATTRADD_NOTHING;
++
++	err = vboxsf_create_at_dentry(dentry, &params);
++	if (err)
++		return err;
++
++	if (params.result != SHFL_FILE_CREATED)
++		return -EPERM;
++
++	vboxsf_close(sbi->root, params.handle);
++
++	err = vboxsf_dir_instantiate(parent, dentry, &params.info);
++	if (err)
++		return err;
++
++	/* parent directory access/change time changed */
++	sf_parent_i->force_restat = 1;
++
++	return 0;
++}
++
++static int vboxsf_dir_mkfile(struct inode *parent, struct dentry *dentry,
++			     umode_t mode, bool excl)
++{
++	return vboxsf_dir_create(parent, dentry, mode, 0);
++}
++
++static int vboxsf_dir_mkdir(struct inode *parent, struct dentry *dentry,
++			    umode_t mode)
++{
++	return vboxsf_dir_create(parent, dentry, mode, 1);
++}
++
++static int vboxsf_dir_unlink(struct inode *parent, struct dentry *dentry)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
++	struct vboxsf_inode *sf_parent_i = VBOXSF_I(parent);
++	struct inode *inode = d_inode(dentry);
++	struct shfl_string *path;
++	u32 flags;
++	int err;
++
++	if (S_ISDIR(inode->i_mode))
++		flags = SHFL_REMOVE_DIR;
++	else
++		flags = SHFL_REMOVE_FILE;
++
++	if (S_ISLNK(inode->i_mode))
++		flags |= SHFL_REMOVE_SYMLINK;
++
++	path = vboxsf_path_from_dentry(sbi, dentry);
++	if (IS_ERR(path))
++		return PTR_ERR(path);
++
++	err = vboxsf_remove(sbi->root, path, flags);
++	__putname(path);
++	if (err)
++		return err;
++
++	/* parent directory access/change time changed */
++	sf_parent_i->force_restat = 1;
++
++	return 0;
++}
++
++static int vboxsf_dir_rename(struct inode *old_parent,
++			     struct dentry *old_dentry,
++			     struct inode *new_parent,
++			     struct dentry *new_dentry,
++			     unsigned int flags)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(old_parent->i_sb);
++	struct vboxsf_inode *sf_old_parent_i = VBOXSF_I(old_parent);
++	struct vboxsf_inode *sf_new_parent_i = VBOXSF_I(new_parent);
++	u32 shfl_flags = SHFL_RENAME_FILE | SHFL_RENAME_REPLACE_IF_EXISTS;
++	struct shfl_string *old_path, *new_path;
++	int err;
++
++	if (flags)
++		return -EINVAL;
++
++	old_path = vboxsf_path_from_dentry(sbi, old_dentry);
++	if (IS_ERR(old_path))
++		return PTR_ERR(old_path);
++
++	new_path = vboxsf_path_from_dentry(sbi, new_dentry);
++	if (IS_ERR(new_path)) {
++		err = PTR_ERR(new_path);
++		goto err_put_old_path;
++	}
++
++	if (d_inode(old_dentry)->i_mode & S_IFDIR)
++		shfl_flags = 0;
++
++	err = vboxsf_rename(sbi->root, old_path, new_path, shfl_flags);
++	if (err == 0) {
++		/* parent directories access/change time changed */
++		sf_new_parent_i->force_restat = 1;
++		sf_old_parent_i->force_restat = 1;
++	}
++
++	__putname(new_path);
++err_put_old_path:
++	__putname(old_path);
++	return err;
++}
++
++static int vboxsf_dir_symlink(struct inode *parent, struct dentry *dentry,
++			      const char *symname)
++{
++	struct vboxsf_inode *sf_parent_i = VBOXSF_I(parent);
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(parent->i_sb);
++	int symname_size = strlen(symname) + 1;
++	struct shfl_string *path, *ssymname;
++	struct shfl_fsobjinfo info;
++	int err;
++
++	path = vboxsf_path_from_dentry(sbi, dentry);
++	if (IS_ERR(path))
++		return PTR_ERR(path);
++
++	ssymname = kmalloc(SHFLSTRING_HEADER_SIZE + symname_size, GFP_KERNEL);
++	if (!ssymname) {
++		__putname(path);
++		return -ENOMEM;
++	}
++	ssymname->length = symname_size - 1;
++	ssymname->size = symname_size;
++	memcpy(ssymname->string.utf8, symname, symname_size);
++
++	err = vboxsf_symlink(sbi->root, path, ssymname, &info);
++	kfree(ssymname);
++	__putname(path);
++	if (err) {
++		/* -EROFS means symlinks are note support -> -EPERM */
++		return (err == -EROFS) ? -EPERM : err;
++	}
++
++	err = vboxsf_dir_instantiate(parent, dentry, &info);
++	if (err)
++		return err;
++
++	/* parent directory access/change time changed */
++	sf_parent_i->force_restat = 1;
++	return 0;
++}
++
++const struct inode_operations vboxsf_dir_iops = {
++	.lookup  = vboxsf_dir_lookup,
++	.create  = vboxsf_dir_mkfile,
++	.mkdir   = vboxsf_dir_mkdir,
++	.rmdir   = vboxsf_dir_unlink,
++	.unlink  = vboxsf_dir_unlink,
++	.rename  = vboxsf_dir_rename,
++	.symlink = vboxsf_dir_symlink,
++	.getattr = vboxsf_getattr,
++	.setattr = vboxsf_setattr,
++};
+diff --git a/drivers/staging/vboxsf/file.c b/drivers/staging/vboxsf/file.c
+new file mode 100644
+index 000000000000..4b61ccf83fca
+--- /dev/null
++++ b/drivers/staging/vboxsf/file.c
+@@ -0,0 +1,370 @@
++// SPDX-License-Identifier: MIT
++/*
++ * VirtualBox Guest Shared Folders support: Regular file inode and file ops.
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#include <linux/mm.h>
++#include <linux/page-flags.h>
++#include <linux/pagemap.h>
++#include <linux/highmem.h>
++#include <linux/sizes.h>
++#include "vfsmod.h"
++
++struct vboxsf_handle {
++	u64 handle;
++	u32 root;
++	u32 access_flags;
++	struct kref refcount;
++	struct list_head head;
++};
++
++static int vboxsf_file_open(struct inode *inode, struct file *file)
++{
++	struct vboxsf_inode *sf_i = VBOXSF_I(inode);
++	struct shfl_createparms params = {};
++	struct vboxsf_handle *sf_handle;
++	u32 access_flags = 0;
++	int err;
++
++	sf_handle = kmalloc(sizeof(*sf_handle), GFP_KERNEL);
++	if (!sf_handle)
++		return -ENOMEM;
++
++	/*
++	 * We check the value of params.handle afterwards to find out if
++	 * the call succeeded or failed, as the API does not seem to cleanly
++	 * distinguish error and informational messages.
++	 *
++	 * Furthermore, we must set params.handle to SHFL_HANDLE_NIL to
++	 * make the shared folders host service use our mode parameter.
++	 */
++	params.handle = SHFL_HANDLE_NIL;
++	if (file->f_flags & O_CREAT) {
++		params.create_flags |= SHFL_CF_ACT_CREATE_IF_NEW;
++		/*
++		 * We ignore O_EXCL, as the Linux kernel seems to call create
++		 * beforehand itself, so O_EXCL should always fail.
++		 */
++		if (file->f_flags & O_TRUNC)
++			params.create_flags |= SHFL_CF_ACT_OVERWRITE_IF_EXISTS;
++		else
++			params.create_flags |= SHFL_CF_ACT_OPEN_IF_EXISTS;
++	} else {
++		params.create_flags |= SHFL_CF_ACT_FAIL_IF_NEW;
++		if (file->f_flags & O_TRUNC)
++			params.create_flags |= SHFL_CF_ACT_OVERWRITE_IF_EXISTS;
++	}
++
++	switch (file->f_flags & O_ACCMODE) {
++	case O_RDONLY:
++		access_flags |= SHFL_CF_ACCESS_READ;
++		break;
++
++	case O_WRONLY:
++		access_flags |= SHFL_CF_ACCESS_WRITE;
++		break;
++
++	case O_RDWR:
++		access_flags |= SHFL_CF_ACCESS_READWRITE;
++		break;
++
++	default:
++		WARN_ON(1);
++	}
++
++	if (file->f_flags & O_APPEND)
++		access_flags |= SHFL_CF_ACCESS_APPEND;
++
++	params.create_flags |= access_flags;
++	params.info.attr.mode = inode->i_mode;
++
++	err = vboxsf_create_at_dentry(file_dentry(file), &params);
++	if (err == 0 && params.handle == SHFL_HANDLE_NIL)
++		err = (params.result == SHFL_FILE_EXISTS) ? -EEXIST : -ENOENT;
++	if (err) {
++		kfree(sf_handle);
++		return err;
++	}
++
++	/* the host may have given us different attr then requested */
++	sf_i->force_restat = 1;
++
++	/* init our handle struct and add it to the inode's handles list */
++	sf_handle->handle = params.handle;
++	sf_handle->root = VBOXSF_SBI(inode->i_sb)->root;
++	sf_handle->access_flags = access_flags;
++	kref_init(&sf_handle->refcount);
++
++	mutex_lock(&sf_i->handle_list_mutex);
++	list_add(&sf_handle->head, &sf_i->handle_list);
++	mutex_unlock(&sf_i->handle_list_mutex);
++
++	file->private_data = sf_handle;
++	return 0;
++}
++
++static void vboxsf_handle_release(struct kref *refcount)
++{
++	struct vboxsf_handle *sf_handle =
++		container_of(refcount, struct vboxsf_handle, refcount);
++
++	vboxsf_close(sf_handle->root, sf_handle->handle);
++	kfree(sf_handle);
++}
++
++static int vboxsf_file_release(struct inode *inode, struct file *file)
++{
++	struct vboxsf_inode *sf_i = VBOXSF_I(inode);
++	struct vboxsf_handle *sf_handle = file->private_data;
++
++	/*
++	 * When a file is closed on our (the guest) side, we want any subsequent
++	 * accesses done on the host side to see all changes done from our side.
++	 */
++	filemap_write_and_wait(inode->i_mapping);
++
++	mutex_lock(&sf_i->handle_list_mutex);
++	list_del(&sf_handle->head);
++	mutex_unlock(&sf_i->handle_list_mutex);
++
++	kref_put(&sf_handle->refcount, vboxsf_handle_release);
++	return 0;
++}
++
++/*
++ * Write back dirty pages now, because there may not be any suitable
++ * open files later
++ */
++static void vboxsf_vma_close(struct vm_area_struct *vma)
++{
++	filemap_write_and_wait(vma->vm_file->f_mapping);
++}
++
++static const struct vm_operations_struct vboxsf_file_vm_ops = {
++	.close		= vboxsf_vma_close,
++	.fault		= filemap_fault,
++	.map_pages	= filemap_map_pages,
++};
++
++static int vboxsf_file_mmap(struct file *file, struct vm_area_struct *vma)
++{
++	int err;
++
++	err = generic_file_mmap(file, vma);
++	if (!err)
++		vma->vm_ops = &vboxsf_file_vm_ops;
++
++	return err;
++}
++
++/*
++ * Note that since we are accessing files on the host's filesystem, files
++ * may always be changed underneath us by the host!
++ *
++ * The vboxsf API between the guest and the host does not offer any functions
++ * to deal with this. There is no inode-generation to check for changes, no
++ * events / callback on changes and no way to lock files.
++ *
++ * To avoid returning stale data when a file gets *opened* on our (the guest)
++ * side, we do a "stat" on the host side, then compare the mtime with the
++ * last known mtime and invalidate the page-cache if they differ.
++ * This is done from vboxsf_inode_revalidate().
++ *
++ * When reads are done through the read_iter fop, it is possible to do
++ * further cache revalidation then, there are 3 options to deal with this:
++ *
++ * 1)  Rely solely on the revalidation done at open time
++ * 2)  Do another "stat" and compare mtime again. Unfortunately the vboxsf
++ *     host API does not allow stat on handles, so we would need to use
++ *     file->f_path.dentry and the stat will then fail if the file was unlinked
++ *     or renamed (and there is no thing like NFS' silly-rename). So we get:
++ * 2a) "stat" and compare mtime, on stat failure invalidate the cache
++ * 2b) "stat" and compare mtime, on stat failure do nothing
++ * 3)  Simply always call invalidate_inode_pages2_range on the range of the read
++ *
++ * Currently we are keeping things KISS and using option 1. this allows
++ * directly using generic_file_read_iter without wrapping it.
++ *
++ * This means that only data written on the host side before open() on
++ * the guest side is guaranteed to be seen by the guest. If necessary
++ * we may provide other read-cache strategies in the future and make this
++ * configurable through a mount option.
++ */
++const struct file_operations vboxsf_reg_fops = {
++	.llseek = generic_file_llseek,
++	.read_iter = generic_file_read_iter,
++	.write_iter = generic_file_write_iter,
++	.mmap = vboxsf_file_mmap,
++	.open = vboxsf_file_open,
++	.release = vboxsf_file_release,
++	.fsync = noop_fsync,
++	.splice_read = generic_file_splice_read,
++};
++
++const struct inode_operations vboxsf_reg_iops = {
++	.getattr = vboxsf_getattr,
++	.setattr = vboxsf_setattr
++};
++
++static int vboxsf_readpage(struct file *file, struct page *page)
++{
++	struct vboxsf_handle *sf_handle = file->private_data;
++	loff_t off = page_offset(page);
++	u32 nread = PAGE_SIZE;
++	u8 *buf;
++	int err;
++
++	buf = kmap(page);
++
++	err = vboxsf_read(sf_handle->root, sf_handle->handle, off, &nread, buf);
++	if (err == 0) {
++		memset(&buf[nread], 0, PAGE_SIZE - nread);
++		flush_dcache_page(page);
++		SetPageUptodate(page);
++	} else {
++		SetPageError(page);
++	}
++
++	kunmap(page);
++	unlock_page(page);
++	return err;
++}
++
++static struct vboxsf_handle *vboxsf_get_write_handle(struct vboxsf_inode *sf_i)
++{
++	struct vboxsf_handle *h, *sf_handle = NULL;
++
++	mutex_lock(&sf_i->handle_list_mutex);
++	list_for_each_entry(h, &sf_i->handle_list, head) {
++		if (h->access_flags == SHFL_CF_ACCESS_WRITE ||
++		    h->access_flags == SHFL_CF_ACCESS_READWRITE) {
++			kref_get(&h->refcount);
++			sf_handle = h;
++			break;
++		}
++	}
++	mutex_unlock(&sf_i->handle_list_mutex);
++
++	return sf_handle;
++}
++
++static int vboxsf_writepage(struct page *page, struct writeback_control *wbc)
++{
++	struct inode *inode = page->mapping->host;
++	struct vboxsf_inode *sf_i = VBOXSF_I(inode);
++	struct vboxsf_handle *sf_handle;
++	loff_t off = page_offset(page);
++	loff_t size = i_size_read(inode);
++	u32 nwrite = PAGE_SIZE;
++	u8 *buf;
++	int err;
++
++	if (off + PAGE_SIZE > size)
++		nwrite = size & ~PAGE_MASK;
++
++	sf_handle = vboxsf_get_write_handle(sf_i);
++	if (!sf_handle)
++		return -EBADF;
++
++	buf = kmap(page);
++	err = vboxsf_write(sf_handle->root, sf_handle->handle,
++			   off, &nwrite, buf);
++	kunmap(page);
++
++	kref_put(&sf_handle->refcount, vboxsf_handle_release);
++
++	if (err == 0) {
++		ClearPageError(page);
++		/* mtime changed */
++		sf_i->force_restat = 1;
++	} else {
++		ClearPageUptodate(page);
++	}
++
++	unlock_page(page);
++	return err;
++}
++
++static int vboxsf_write_end(struct file *file, struct address_space *mapping,
++			    loff_t pos, unsigned int len, unsigned int copied,
++			    struct page *page, void *fsdata)
++{
++	struct inode *inode = mapping->host;
++	struct vboxsf_handle *sf_handle = file->private_data;
++	unsigned int from = pos & ~PAGE_MASK;
++	u32 nwritten = len;
++	u8 *buf;
++	int err;
++
++	buf = kmap(page);
++	err = vboxsf_write(sf_handle->root, sf_handle->handle,
++			   pos, &nwritten, buf + from);
++	kunmap(page);
++
++	if (err) {
++		nwritten = 0;
++		goto out;
++	}
++
++	/* mtime changed */
++	VBOXSF_I(inode)->force_restat = 1;
++
++	if (!PageUptodate(page) && nwritten == PAGE_SIZE)
++		SetPageUptodate(page);
++
++	pos += nwritten;
++	if (pos > inode->i_size)
++		i_size_write(inode, pos);
++
++out:
++	unlock_page(page);
++	put_page(page);
++
++	return nwritten;
++}
++
++const struct address_space_operations vboxsf_reg_aops = {
++	.readpage = vboxsf_readpage,
++	.writepage = vboxsf_writepage,
++	.set_page_dirty = __set_page_dirty_nobuffers,
++	.write_begin = simple_write_begin,
++	.write_end = vboxsf_write_end,
++};
++
++static const char *vboxsf_get_link(struct dentry *dentry, struct inode *inode,
++				   struct delayed_call *done)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(inode->i_sb);
++	struct shfl_string *path;
++	char *link;
++	int err;
++
++	if (!dentry)
++		return ERR_PTR(-ECHILD);
++
++	path = vboxsf_path_from_dentry(sbi, dentry);
++	if (IS_ERR(path))
++		return (char *)path;
++
++	link = kzalloc(PATH_MAX, GFP_KERNEL);
++	if (!link) {
++		__putname(path);
++		return ERR_PTR(-ENOMEM);
++	}
++
++	err = vboxsf_readlink(sbi->root, path, PATH_MAX, link);
++	__putname(path);
++	if (err) {
++		kfree(link);
++		return ERR_PTR(err);
++	}
++
++	set_delayed_call(done, kfree_link, link);
++	return link;
++}
++
++const struct inode_operations vboxsf_lnk_iops = {
++	.get_link = vboxsf_get_link
++};
+diff --git a/drivers/staging/vboxsf/shfl_hostintf.h b/drivers/staging/vboxsf/shfl_hostintf.h
+new file mode 100644
+index 000000000000..aca829062c12
+--- /dev/null
++++ b/drivers/staging/vboxsf/shfl_hostintf.h
+@@ -0,0 +1,901 @@
++/* SPDX-License-Identifier: MIT */
++/*
++ * VirtualBox Shared Folders: host interface definition.
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#ifndef SHFL_HOSTINTF_H
++#define SHFL_HOSTINTF_H
++
++#include <linux/vbox_vmmdev_types.h>
++
++/* The max in/out buffer size for a FN_READ or FN_WRITE call */
++#define SHFL_MAX_RW_COUNT           (16 * SZ_1M)
++
++/*
++ * Structures shared between guest and the service
++ * can be relocated and use offsets to point to variable
++ * length parts.
++ *
++ * Shared folders protocol works with handles.
++ * Before doing any action on a file system object,
++ * one have to obtain the object handle via a SHFL_FN_CREATE
++ * request. A handle must be closed with SHFL_FN_CLOSE.
++ */
++
++enum {
++	SHFL_FN_QUERY_MAPPINGS = 1,	/* Query mappings changes. */
++	SHFL_FN_QUERY_MAP_NAME = 2,	/* Query map name. */
++	SHFL_FN_CREATE = 3,		/* Open/create object. */
++	SHFL_FN_CLOSE = 4,		/* Close object handle. */
++	SHFL_FN_READ = 5,		/* Read object content. */
++	SHFL_FN_WRITE = 6,		/* Write new object content. */
++	SHFL_FN_LOCK = 7,		/* Lock/unlock a range in the object. */
++	SHFL_FN_LIST = 8,		/* List object content. */
++	SHFL_FN_INFORMATION = 9,	/* Query/set object information. */
++	/* Note function number 10 is not used! */
++	SHFL_FN_REMOVE = 11,		/* Remove object */
++	SHFL_FN_MAP_FOLDER_OLD = 12,	/* Map folder (legacy) */
++	SHFL_FN_UNMAP_FOLDER = 13,	/* Unmap folder */
++	SHFL_FN_RENAME = 14,		/* Rename object */
++	SHFL_FN_FLUSH = 15,		/* Flush file */
++	SHFL_FN_SET_UTF8 = 16,		/* Select UTF8 filename encoding */
++	SHFL_FN_MAP_FOLDER = 17,	/* Map folder */
++	SHFL_FN_READLINK = 18,		/* Read symlink dest (as of VBox 4.0) */
++	SHFL_FN_SYMLINK = 19,		/* Create symlink (as of VBox 4.0) */
++	SHFL_FN_SET_SYMLINKS = 20,	/* Ask host to show symlinks (4.0+) */
++};
++
++/* Root handles for a mapping are of type u32, Root handles are unique. */
++#define SHFL_ROOT_NIL		UINT_MAX
++
++/* Shared folders handle for an opened object are of type u64. */
++#define SHFL_HANDLE_NIL		ULLONG_MAX
++
++/* Hardcoded maximum length (in chars) of a shared folder name. */
++#define SHFL_MAX_LEN         (256)
++/* Hardcoded maximum number of shared folder mapping available to the guest. */
++#define SHFL_MAX_MAPPINGS    (64)
++
++/** Shared folder string buffer structure. */
++struct shfl_string {
++	/** Allocated size of the string member in bytes. */
++	u16 size;
++
++	/** Length of string without trailing nul in bytes. */
++	u16 length;
++
++	/** UTF-8 or UTF-16 string. Nul terminated. */
++	union {
++		u8 utf8[2];
++		u16 utf16[1];
++		u16 ucs2[1]; /* misnomer, use utf16. */
++	} string;
++};
++VMMDEV_ASSERT_SIZE(shfl_string, 6);
++
++/* The size of shfl_string w/o the string part. */
++#define SHFLSTRING_HEADER_SIZE  4
++
++/* Calculate size of the string. */
++static inline u32 shfl_string_buf_size(const struct shfl_string *string)
++{
++	return string ? SHFLSTRING_HEADER_SIZE + string->size : 0;
++}
++
++/* Set user id on execution (S_ISUID). */
++#define SHFL_UNIX_ISUID             0004000U
++/* Set group id on execution (S_ISGID). */
++#define SHFL_UNIX_ISGID             0002000U
++/* Sticky bit (S_ISVTX / S_ISTXT). */
++#define SHFL_UNIX_ISTXT             0001000U
++
++/* Owner readable (S_IRUSR). */
++#define SHFL_UNIX_IRUSR             0000400U
++/* Owner writable (S_IWUSR). */
++#define SHFL_UNIX_IWUSR             0000200U
++/* Owner executable (S_IXUSR). */
++#define SHFL_UNIX_IXUSR             0000100U
++
++/* Group readable (S_IRGRP). */
++#define SHFL_UNIX_IRGRP             0000040U
++/* Group writable (S_IWGRP). */
++#define SHFL_UNIX_IWGRP             0000020U
++/* Group executable (S_IXGRP). */
++#define SHFL_UNIX_IXGRP             0000010U
++
++/* Other readable (S_IROTH). */
++#define SHFL_UNIX_IROTH             0000004U
++/* Other writable (S_IWOTH). */
++#define SHFL_UNIX_IWOTH             0000002U
++/* Other executable (S_IXOTH). */
++#define SHFL_UNIX_IXOTH             0000001U
++
++/* Named pipe (fifo) (S_IFIFO). */
++#define SHFL_TYPE_FIFO              0010000U
++/* Character device (S_IFCHR). */
++#define SHFL_TYPE_DEV_CHAR          0020000U
++/* Directory (S_IFDIR). */
++#define SHFL_TYPE_DIRECTORY         0040000U
++/* Block device (S_IFBLK). */
++#define SHFL_TYPE_DEV_BLOCK         0060000U
++/* Regular file (S_IFREG). */
++#define SHFL_TYPE_FILE              0100000U
++/* Symbolic link (S_IFLNK). */
++#define SHFL_TYPE_SYMLINK           0120000U
++/* Socket (S_IFSOCK). */
++#define SHFL_TYPE_SOCKET            0140000U
++/* Whiteout (S_IFWHT). */
++#define SHFL_TYPE_WHITEOUT          0160000U
++/* Type mask (S_IFMT). */
++#define SHFL_TYPE_MASK              0170000U
++
++/* Checks the mode flags indicate a directory (S_ISDIR). */
++#define SHFL_IS_DIRECTORY(m)   (((m) & SHFL_TYPE_MASK) == SHFL_TYPE_DIRECTORY)
++/* Checks the mode flags indicate a symbolic link (S_ISLNK). */
++#define SHFL_IS_SYMLINK(m)     (((m) & SHFL_TYPE_MASK) == SHFL_TYPE_SYMLINK)
++
++/** The available additional information in a shfl_fsobjattr object. */
++enum shfl_fsobjattr_add {
++	/** No additional information is available / requested. */
++	SHFLFSOBJATTRADD_NOTHING = 1,
++	/**
++	 * The additional unix attributes (shfl_fsobjattr::u::unix_attr) are
++	 *  available / requested.
++	 */
++	SHFLFSOBJATTRADD_UNIX,
++	/**
++	 * The additional extended attribute size (shfl_fsobjattr::u::size) is
++	 *  available / requested.
++	 */
++	SHFLFSOBJATTRADD_EASIZE,
++	/**
++	 * The last valid item (inclusive).
++	 * The valid range is SHFLFSOBJATTRADD_NOTHING thru
++	 * SHFLFSOBJATTRADD_LAST.
++	 */
++	SHFLFSOBJATTRADD_LAST = SHFLFSOBJATTRADD_EASIZE,
++
++	/** The usual 32-bit hack. */
++	SHFLFSOBJATTRADD_32BIT_SIZE_HACK = 0x7fffffff
++};
++
++/**
++ * Additional unix Attributes, these are available when
++ * shfl_fsobjattr.additional == SHFLFSOBJATTRADD_UNIX.
++ */
++struct shfl_fsobjattr_unix {
++	/**
++	 * The user owning the filesystem object (st_uid).
++	 * This field is ~0U if not supported.
++	 */
++	u32 uid;
++
++	/**
++	 * The group the filesystem object is assigned (st_gid).
++	 * This field is ~0U if not supported.
++	 */
++	u32 gid;
++
++	/**
++	 * Number of hard links to this filesystem object (st_nlink).
++	 * This field is 1 if the filesystem doesn't support hardlinking or
++	 * the information isn't available.
++	 */
++	u32 hardlinks;
++
++	/**
++	 * The device number of the device which this filesystem object resides
++	 * on (st_dev). This field is 0 if this information is not available.
++	 */
++	u32 inode_id_device;
++
++	/**
++	 * The unique identifier (within the filesystem) of this filesystem
++	 * object (st_ino). Together with inode_id_device, this field can be
++	 * used as a OS wide unique id, when both their values are not 0.
++	 * This field is 0 if the information is not available.
++	 */
++	u64 inode_id;
++
++	/**
++	 * User flags (st_flags).
++	 * This field is 0 if this information is not available.
++	 */
++	u32 flags;
++
++	/**
++	 * The current generation number (st_gen).
++	 * This field is 0 if this information is not available.
++	 */
++	u32 generation_id;
++
++	/**
++	 * The device number of a char. or block device type object (st_rdev).
++	 * This field is 0 if the file isn't a char. or block device or when
++	 * the OS doesn't use the major+minor device idenfication scheme.
++	 */
++	u32 device;
++} __packed;
++
++/** Extended attribute size. */
++struct shfl_fsobjattr_easize {
++	/** Size of EAs. */
++	s64 cb;
++} __packed;
++
++/** Shared folder filesystem object attributes. */
++struct shfl_fsobjattr {
++	/** Mode flags (st_mode). SHFL_UNIX_*, SHFL_TYPE_*, and SHFL_DOS_*. */
++	u32 mode;
++
++	/** The additional attributes available. */
++	enum shfl_fsobjattr_add additional;
++
++	/**
++	 * Additional attributes.
++	 *
++	 * Unless explicitly specified to an API, the API can provide additional
++	 * data as it is provided by the underlying OS.
++	 */
++	union {
++		struct shfl_fsobjattr_unix unix_attr;
++		struct shfl_fsobjattr_easize size;
++	} __packed u;
++} __packed;
++VMMDEV_ASSERT_SIZE(shfl_fsobjattr, 44);
++
++struct shfl_timespec {
++	s64 ns_relative_to_unix_epoch;
++};
++
++/** Filesystem object information structure. */
++struct shfl_fsobjinfo {
++	/**
++	 * Logical size (st_size).
++	 * For normal files this is the size of the file.
++	 * For symbolic links, this is the length of the path name contained
++	 * in the symbolic link.
++	 * For other objects this fields needs to be specified.
++	 */
++	s64 size;
++
++	/** Disk allocation size (st_blocks * DEV_BSIZE). */
++	s64 allocated;
++
++	/** Time of last access (st_atime). */
++	struct shfl_timespec access_time;
++
++	/** Time of last data modification (st_mtime). */
++	struct shfl_timespec modification_time;
++
++	/**
++	 * Time of last status change (st_ctime).
++	 * If not available this is set to modification_time.
++	 */
++	struct shfl_timespec change_time;
++
++	/**
++	 * Time of file birth (st_birthtime).
++	 * If not available this is set to change_time.
++	 */
++	struct shfl_timespec birth_time;
++
++	/** Attributes. */
++	struct shfl_fsobjattr attr;
++
++} __packed;
++VMMDEV_ASSERT_SIZE(shfl_fsobjinfo, 92);
++
++/**
++ * result of an open/create request.
++ * Along with handle value the result code
++ * identifies what has happened while
++ * trying to open the object.
++ */
++enum shfl_create_result {
++	SHFL_NO_RESULT,
++	/** Specified path does not exist. */
++	SHFL_PATH_NOT_FOUND,
++	/** Path to file exists, but the last component does not. */
++	SHFL_FILE_NOT_FOUND,
++	/** File already exists and either has been opened or not. */
++	SHFL_FILE_EXISTS,
++	/** New file was created. */
++	SHFL_FILE_CREATED,
++	/** Existing file was replaced or overwritten. */
++	SHFL_FILE_REPLACED
++};
++
++/* No flags. Initialization value. */
++#define SHFL_CF_NONE                  (0x00000000)
++
++/*
++ * Only lookup the object, do not return a handle. When this is set all other
++ * flags are ignored.
++ */
++#define SHFL_CF_LOOKUP                (0x00000001)
++
++/*
++ * Open parent directory of specified object.
++ * Useful for the corresponding Windows FSD flag
++ * and for opening paths like \\dir\\*.* to search the 'dir'.
++ */
++#define SHFL_CF_OPEN_TARGET_DIRECTORY (0x00000002)
++
++/* Create/open a directory. */
++#define SHFL_CF_DIRECTORY             (0x00000004)
++
++/*
++ *  Open/create action to do if object exists
++ *  and if the object does not exists.
++ *  REPLACE file means atomically DELETE and CREATE.
++ *  OVERWRITE file means truncating the file to 0 and
++ *  setting new size.
++ *  When opening an existing directory REPLACE and OVERWRITE
++ *  actions are considered invalid, and cause returning
++ *  FILE_EXISTS with NIL handle.
++ */
++#define SHFL_CF_ACT_MASK_IF_EXISTS      (0x000000f0)
++#define SHFL_CF_ACT_MASK_IF_NEW         (0x00000f00)
++
++/* What to do if object exists. */
++#define SHFL_CF_ACT_OPEN_IF_EXISTS      (0x00000000)
++#define SHFL_CF_ACT_FAIL_IF_EXISTS      (0x00000010)
++#define SHFL_CF_ACT_REPLACE_IF_EXISTS   (0x00000020)
++#define SHFL_CF_ACT_OVERWRITE_IF_EXISTS (0x00000030)
++
++/* What to do if object does not exist. */
++#define SHFL_CF_ACT_CREATE_IF_NEW       (0x00000000)
++#define SHFL_CF_ACT_FAIL_IF_NEW         (0x00000100)
++
++/* Read/write requested access for the object. */
++#define SHFL_CF_ACCESS_MASK_RW          (0x00003000)
++
++/* No access requested. */
++#define SHFL_CF_ACCESS_NONE             (0x00000000)
++/* Read access requested. */
++#define SHFL_CF_ACCESS_READ             (0x00001000)
++/* Write access requested. */
++#define SHFL_CF_ACCESS_WRITE            (0x00002000)
++/* Read/Write access requested. */
++#define SHFL_CF_ACCESS_READWRITE	(0x00003000)
++
++/* Requested share access for the object. */
++#define SHFL_CF_ACCESS_MASK_DENY        (0x0000c000)
++
++/* Allow any access. */
++#define SHFL_CF_ACCESS_DENYNONE         (0x00000000)
++/* Do not allow read. */
++#define SHFL_CF_ACCESS_DENYREAD         (0x00004000)
++/* Do not allow write. */
++#define SHFL_CF_ACCESS_DENYWRITE        (0x00008000)
++/* Do not allow access. */
++#define SHFL_CF_ACCESS_DENYALL          (0x0000c000)
++
++/* Requested access to attributes of the object. */
++#define SHFL_CF_ACCESS_MASK_ATTR        (0x00030000)
++
++/* No access requested. */
++#define SHFL_CF_ACCESS_ATTR_NONE        (0x00000000)
++/* Read access requested. */
++#define SHFL_CF_ACCESS_ATTR_READ        (0x00010000)
++/* Write access requested. */
++#define SHFL_CF_ACCESS_ATTR_WRITE       (0x00020000)
++/* Read/Write access requested. */
++#define SHFL_CF_ACCESS_ATTR_READWRITE   (0x00030000)
++
++/*
++ * The file is opened in append mode.
++ * Ignored if SHFL_CF_ACCESS_WRITE is not set.
++ */
++#define SHFL_CF_ACCESS_APPEND           (0x00040000)
++
++/** Create parameters buffer struct for SHFL_FN_CREATE call */
++struct shfl_createparms {
++	/** Returned handle of opened object. */
++	u64 handle;
++
++	/** Returned result of the operation */
++	enum shfl_create_result result;
++
++	/** SHFL_CF_* */
++	u32 create_flags;
++
++	/**
++	 * Attributes of object to create and
++	 * returned actual attributes of opened/created object.
++	 */
++	struct shfl_fsobjinfo info;
++} __packed;
++
++/** Shared Folder directory information */
++struct shfl_dirinfo {
++	/** Full information about the object. */
++	struct shfl_fsobjinfo info;
++	/**
++	 * The length of the short field (number of UTF16 chars).
++	 * It is 16-bit for reasons of alignment.
++	 */
++	u16 short_name_len;
++	/**
++	 * The short name for 8.3 compatibility.
++	 * Empty string if not available.
++	 */
++	u16 short_name[14];
++	struct shfl_string name;
++};
++
++/** Shared folder filesystem properties. */
++struct shfl_fsproperties {
++	/**
++	 * The maximum size of a filesystem object name.
++	 * This does not include the '\\0'.
++	 */
++	u32 max_component_len;
++
++	/**
++	 * True if the filesystem is remote.
++	 * False if the filesystem is local.
++	 */
++	bool remote;
++
++	/**
++	 * True if the filesystem is case sensitive.
++	 * False if the filesystem is case insensitive.
++	 */
++	bool case_sensitive;
++
++	/**
++	 * True if the filesystem is mounted read only.
++	 * False if the filesystem is mounted read write.
++	 */
++	bool read_only;
++
++	/**
++	 * True if the filesystem can encode unicode object names.
++	 * False if it can't.
++	 */
++	bool supports_unicode;
++
++	/**
++	 * True if the filesystem is compresses.
++	 * False if it isn't or we don't know.
++	 */
++	bool compressed;
++
++	/**
++	 * True if the filesystem compresses of individual files.
++	 * False if it doesn't or we don't know.
++	 */
++	bool file_compression;
++};
++VMMDEV_ASSERT_SIZE(shfl_fsproperties, 12);
++
++struct shfl_volinfo {
++	s64 total_allocation_bytes;
++	s64 available_allocation_bytes;
++	u32 bytes_per_allocation_unit;
++	u32 bytes_per_sector;
++	u32 serial;
++	struct shfl_fsproperties properties;
++};
++
++
++/** SHFL_FN_MAP_FOLDER Parameters structure. */
++struct shfl_map_folder {
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string buffer.
++	 */
++	struct vmmdev_hgcm_function_parameter path;
++
++	/**
++	 * pointer, out: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in: UTF16
++	 * Path delimiter
++	 */
++	struct vmmdev_hgcm_function_parameter delimiter;
++
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Case senstive flag
++	 */
++	struct vmmdev_hgcm_function_parameter case_sensitive;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_MAP_FOLDER (4)
++
++
++/** SHFL_FN_UNMAP_FOLDER Parameters structure. */
++struct shfl_unmap_folder {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_UNMAP_FOLDER (1)
++
++
++/** SHFL_FN_CREATE Parameters structure. */
++struct shfl_create {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string buffer.
++	 */
++	struct vmmdev_hgcm_function_parameter path;
++
++	/**
++	 * pointer, in/out:
++	 * Points to struct shfl_createparms buffer.
++	 */
++	struct vmmdev_hgcm_function_parameter parms;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_CREATE (3)
++
++
++/** SHFL_FN_CLOSE Parameters structure. */
++struct shfl_close {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * value64, in:
++	 * SHFLHANDLE (u64) of object to close.
++	 */
++	struct vmmdev_hgcm_function_parameter handle;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_CLOSE (2)
++
++
++/** SHFL_FN_READ Parameters structure. */
++struct shfl_read {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * value64, in:
++	 * SHFLHANDLE (u64) of object to read from.
++	 */
++	struct vmmdev_hgcm_function_parameter handle;
++
++	/**
++	 * value64, in:
++	 * Offset to read from.
++	 */
++	struct vmmdev_hgcm_function_parameter offset;
++
++	/**
++	 * value64, in/out:
++	 * Bytes to read/How many were read.
++	 */
++	struct vmmdev_hgcm_function_parameter cb;
++
++	/**
++	 * pointer, out:
++	 * Buffer to place data to.
++	 */
++	struct vmmdev_hgcm_function_parameter buffer;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_READ (5)
++
++
++/** SHFL_FN_WRITE Parameters structure. */
++struct shfl_write {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * value64, in:
++	 * SHFLHANDLE (u64) of object to write to.
++	 */
++	struct vmmdev_hgcm_function_parameter handle;
++
++	/**
++	 * value64, in:
++	 * Offset to write to.
++	 */
++	struct vmmdev_hgcm_function_parameter offset;
++
++	/**
++	 * value64, in/out:
++	 * Bytes to write/How many were written.
++	 */
++	struct vmmdev_hgcm_function_parameter cb;
++
++	/**
++	 * pointer, in:
++	 * Data to write.
++	 */
++	struct vmmdev_hgcm_function_parameter buffer;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_WRITE (5)
++
++
++/*
++ * SHFL_FN_LIST
++ * Listing information includes variable length RTDIRENTRY[EX] structures.
++ */
++
++#define SHFL_LIST_NONE			0
++#define SHFL_LIST_RETURN_ONE		1
++
++/** SHFL_FN_LIST Parameters structure. */
++struct shfl_list {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * value64, in:
++	 * SHFLHANDLE (u64) of object to be listed.
++	 */
++	struct vmmdev_hgcm_function_parameter handle;
++
++	/**
++	 * value32, in:
++	 * List flags SHFL_LIST_*.
++	 */
++	struct vmmdev_hgcm_function_parameter flags;
++
++	/**
++	 * value32, in/out:
++	 * Bytes to be used for listing information/How many bytes were used.
++	 */
++	struct vmmdev_hgcm_function_parameter cb;
++
++	/**
++	 * pointer, in/optional
++	 * Points to struct shfl_string buffer that specifies a search path.
++	 */
++	struct vmmdev_hgcm_function_parameter path;
++
++	/**
++	 * pointer, out:
++	 * Buffer to place listing information to. (struct shfl_dirinfo)
++	 */
++	struct vmmdev_hgcm_function_parameter buffer;
++
++	/**
++	 * value32, in/out:
++	 * Indicates a key where the listing must be resumed.
++	 * in: 0 means start from begin of object.
++	 * out: 0 means listing completed.
++	 */
++	struct vmmdev_hgcm_function_parameter resume_point;
++
++	/**
++	 * pointer, out:
++	 * Number of files returned
++	 */
++	struct vmmdev_hgcm_function_parameter file_count;
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_LIST (8)
++
++
++/** SHFL_FN_READLINK Parameters structure. */
++struct shfl_readLink {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string buffer.
++	 */
++	struct vmmdev_hgcm_function_parameter path;
++
++	/**
++	 * pointer, out:
++	 * Buffer to place data to.
++	 */
++	struct vmmdev_hgcm_function_parameter buffer;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_READLINK (3)
++
++
++/* SHFL_FN_INFORMATION */
++
++/* Mask of Set/Get bit. */
++#define SHFL_INFO_MODE_MASK    (0x1)
++/* Get information */
++#define SHFL_INFO_GET          (0x0)
++/* Set information */
++#define SHFL_INFO_SET          (0x1)
++
++/* Get name of the object. */
++#define SHFL_INFO_NAME         (0x2)
++/* Set size of object (extend/trucate); only applies to file objects */
++#define SHFL_INFO_SIZE         (0x4)
++/* Get/Set file object info. */
++#define SHFL_INFO_FILE         (0x8)
++/* Get volume information. */
++#define SHFL_INFO_VOLUME       (0x10)
++
++/** SHFL_FN_INFORMATION Parameters structure. */
++struct shfl_information {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * value64, in:
++	 * SHFLHANDLE (u64) of object to be listed.
++	 */
++	struct vmmdev_hgcm_function_parameter handle;
++
++	/**
++	 * value32, in:
++	 * SHFL_INFO_*
++	 */
++	struct vmmdev_hgcm_function_parameter flags;
++
++	/**
++	 * value32, in/out:
++	 * Bytes to be used for information/How many bytes were used.
++	 */
++	struct vmmdev_hgcm_function_parameter cb;
++
++	/**
++	 * pointer, in/out:
++	 * Information to be set/get (shfl_fsobjinfo or shfl_string). Do not
++	 * forget to set the shfl_fsobjinfo::attr::additional for a get
++	 * operation as well.
++	 */
++	struct vmmdev_hgcm_function_parameter info;
++
++};
++
++/* Number of parameters */
++#define SHFL_CPARMS_INFORMATION (5)
++
++
++/* SHFL_FN_REMOVE */
++
++#define SHFL_REMOVE_FILE        (0x1)
++#define SHFL_REMOVE_DIR         (0x2)
++#define SHFL_REMOVE_SYMLINK     (0x4)
++
++/** SHFL_FN_REMOVE Parameters structure. */
++struct shfl_remove {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string buffer.
++	 */
++	struct vmmdev_hgcm_function_parameter path;
++
++	/**
++	 * value32, in:
++	 * remove flags (file/directory)
++	 */
++	struct vmmdev_hgcm_function_parameter flags;
++
++};
++
++#define SHFL_CPARMS_REMOVE  (3)
++
++
++/* SHFL_FN_RENAME */
++
++#define SHFL_RENAME_FILE                (0x1)
++#define SHFL_RENAME_DIR                 (0x2)
++#define SHFL_RENAME_REPLACE_IF_EXISTS   (0x4)
++
++/** SHFL_FN_RENAME Parameters structure. */
++struct shfl_rename {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string src.
++	 */
++	struct vmmdev_hgcm_function_parameter src;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string dest.
++	 */
++	struct vmmdev_hgcm_function_parameter dest;
++
++	/**
++	 * value32, in:
++	 * rename flags (file/directory)
++	 */
++	struct vmmdev_hgcm_function_parameter flags;
++
++};
++
++#define SHFL_CPARMS_RENAME  (4)
++
++
++/** SHFL_FN_SYMLINK Parameters structure. */
++struct shfl_symlink {
++	/**
++	 * pointer, in: SHFLROOT (u32)
++	 * Root handle of the mapping which name is queried.
++	 */
++	struct vmmdev_hgcm_function_parameter root;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string of path for the new symlink.
++	 */
++	struct vmmdev_hgcm_function_parameter new_path;
++
++	/**
++	 * pointer, in:
++	 * Points to struct shfl_string of destination for symlink.
++	 */
++	struct vmmdev_hgcm_function_parameter old_path;
++
++	/**
++	 * pointer, out:
++	 * Information about created symlink.
++	 */
++	struct vmmdev_hgcm_function_parameter info;
++
++};
++
++#define SHFL_CPARMS_SYMLINK  (4)
++
++#endif
+diff --git a/drivers/staging/vboxsf/super.c b/drivers/staging/vboxsf/super.c
+new file mode 100644
+index 000000000000..3913ffafa83b
+--- /dev/null
++++ b/drivers/staging/vboxsf/super.c
+@@ -0,0 +1,499 @@
++// SPDX-License-Identifier: MIT
++/*
++ * VirtualBox Guest Shared Folders support: Virtual File System.
++ *
++ * Module initialization/finalization
++ * File system registration/deregistration
++ * Superblock reading
++ * Few utility functions
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#include <linux/idr.h>
++#include <linux/fs_parser.h>
++#include <linux/magic.h>
++#include <linux/module.h>
++#include <linux/nls.h>
++#include <linux/statfs.h>
++#include <linux/vbox_utils.h>
++#include "vfsmod.h"
++
++#define VBOXSF_SUPER_MAGIC 0x786f4256 /* 'VBox' little endian */
++
++#define VBSF_MOUNT_SIGNATURE_BYTE_0 ('\000')
++#define VBSF_MOUNT_SIGNATURE_BYTE_1 ('\377')
++#define VBSF_MOUNT_SIGNATURE_BYTE_2 ('\376')
++#define VBSF_MOUNT_SIGNATURE_BYTE_3 ('\375')
++
++static int follow_symlinks;
++module_param(follow_symlinks, int, 0444);
++MODULE_PARM_DESC(follow_symlinks,
++		 "Let host resolve symlinks rather than showing them");
++
++static DEFINE_IDA(vboxsf_bdi_ida);
++static DEFINE_MUTEX(vboxsf_setup_mutex);
++static bool vboxsf_setup_done;
++static struct super_operations vboxsf_super_ops; /* forward declaration */
++static struct kmem_cache *vboxsf_inode_cachep;
++
++static char * const vboxsf_default_nls = CONFIG_NLS_DEFAULT;
++
++enum  { opt_nls, opt_uid, opt_gid, opt_ttl, opt_dmode, opt_fmode,
++	opt_dmask, opt_fmask };
++
++static const struct fs_parameter_spec vboxsf_param_specs[] = {
++	fsparam_string	("nls",		opt_nls),
++	fsparam_u32	("uid",		opt_uid),
++	fsparam_u32	("gid",		opt_gid),
++	fsparam_u32	("ttl",		opt_ttl),
++	fsparam_u32oct	("dmode",	opt_dmode),
++	fsparam_u32oct	("fmode",	opt_fmode),
++	fsparam_u32oct	("dmask",	opt_dmask),
++	fsparam_u32oct	("fmask",	opt_fmask),
++	{}
++};
++
++static const struct fs_parameter_description vboxsf_fs_parameters = {
++	.name  = "vboxsf",
++	.specs  = vboxsf_param_specs,
++};
++
++static int vboxsf_parse_param(struct fs_context *fc, struct fs_parameter *param)
++{
++	struct vboxsf_fs_context *ctx = fc->fs_private;
++	struct fs_parse_result result;
++	kuid_t uid;
++	kgid_t gid;
++	int opt;
++
++	opt = fs_parse(fc, &vboxsf_fs_parameters, param, &result);
++	if (opt < 0)
++		return opt;
++
++	switch (opt) {
++	case opt_nls:
++		if (fc->purpose != FS_CONTEXT_FOR_MOUNT) {
++			vbg_err("vboxsf: Cannot reconfigure nls option\n");
++			return -EINVAL;
++		}
++		ctx->nls_name = param->string;
++		param->string = NULL;
++		break;
++	case opt_uid:
++		uid = make_kuid(current_user_ns(), result.uint_32);
++		if (!uid_valid(uid))
++			return -EINVAL;
++		ctx->o.uid = uid;
++		break;
++	case opt_gid:
++		gid = make_kgid(current_user_ns(), result.uint_32);
++		if (!gid_valid(gid))
++			return -EINVAL;
++		ctx->o.gid = gid;
++		break;
++	case opt_ttl:
++		ctx->o.ttl = msecs_to_jiffies(result.uint_32);
++		break;
++	case opt_dmode:
++		if (result.uint_32 & ~0777)
++			return -EINVAL;
++		ctx->o.dmode = result.uint_32;
++		ctx->o.dmode_set = true;
++		break;
++	case opt_fmode:
++		if (result.uint_32 & ~0777)
++			return -EINVAL;
++		ctx->o.fmode = result.uint_32;
++		ctx->o.fmode_set = true;
++		break;
++	case opt_dmask:
++		if (result.uint_32 & ~07777)
++			return -EINVAL;
++		ctx->o.dmask = result.uint_32;
++		break;
++	case opt_fmask:
++		if (result.uint_32 & ~07777)
++			return -EINVAL;
++		ctx->o.fmask = result.uint_32;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int vboxsf_fill_super(struct super_block *sb, struct fs_context *fc)
++{
++	struct vboxsf_fs_context *ctx = fc->fs_private;
++	struct shfl_string *folder_name, root_path;
++	struct vboxsf_sbi *sbi;
++	struct dentry *droot;
++	struct inode *iroot;
++	char *nls_name;
++	size_t size;
++	int err;
++
++	if (!fc->source)
++		return -EINVAL;
++
++	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
++	if (!sbi)
++		return -ENOMEM;
++
++	sbi->o = ctx->o;
++	idr_init(&sbi->ino_idr);
++	spin_lock_init(&sbi->ino_idr_lock);
++	sbi->next_generation = 1;
++	sbi->bdi_id = -1;
++
++	/* Load nls if not utf8 */
++	nls_name = ctx->nls_name ? ctx->nls_name : vboxsf_default_nls;
++	if (strcmp(nls_name, "utf8") != 0) {
++		if (nls_name == vboxsf_default_nls)
++			sbi->nls = load_nls_default();
++		else
++			sbi->nls = load_nls(nls_name);
++
++		if (!sbi->nls) {
++			vbg_err("vboxsf: Count not load '%s' nls\n", nls_name);
++			err = -EINVAL;
++			goto fail_free;
++		}
++	}
++
++	sbi->bdi_id = ida_simple_get(&vboxsf_bdi_ida, 0, 0, GFP_KERNEL);
++	if (sbi->bdi_id < 0) {
++		err = sbi->bdi_id;
++		goto fail_free;
++	}
++
++	err = super_setup_bdi_name(sb, "vboxsf-%s.%d", fc->source, sbi->bdi_id);
++	if (err)
++		goto fail_free;
++
++	/* Turn source into a shfl_string and map the folder */
++	size = strlen(fc->source) + 1;
++	folder_name = kmalloc(SHFLSTRING_HEADER_SIZE + size, GFP_KERNEL);
++	if (!folder_name)
++		goto fail_free;
++	folder_name->size = size;
++	folder_name->length = size - 1;
++	strlcpy(folder_name->string.utf8, fc->source, size);
++	err = vboxsf_map_folder(folder_name, &sbi->root);
++	kfree(folder_name);
++	if (err) {
++		vbg_err("vboxsf: Host rejected mount of '%s' with error %d\n",
++			fc->source, err);
++		goto fail_free;
++	}
++
++	root_path.length = 1;
++	root_path.size = 2;
++	root_path.string.utf8[0] = '/';
++	root_path.string.utf8[1] = 0;
++	err = vboxsf_stat(sbi, &root_path, &sbi->root_info);
++	if (err)
++		goto fail_unmap;
++
++	sb->s_magic = VBOXSF_SUPER_MAGIC;
++	sb->s_blocksize = 1024;
++	sb->s_maxbytes = MAX_LFS_FILESIZE;
++	sb->s_op = &vboxsf_super_ops;
++	sb->s_d_op = &vboxsf_dentry_ops;
++
++	iroot = iget_locked(sb, 0);
++	if (!iroot) {
++		err = -ENOMEM;
++		goto fail_unmap;
++	}
++	vboxsf_init_inode(sbi, iroot, &sbi->root_info);
++	unlock_new_inode(iroot);
++
++	droot = d_make_root(iroot);
++	if (!droot) {
++		err = -ENOMEM;
++		goto fail_unmap;
++	}
++
++	sb->s_root = droot;
++	sb->s_fs_info = sbi;
++	return 0;
++
++fail_unmap:
++	vboxsf_unmap_folder(sbi->root);
++fail_free:
++	if (sbi->bdi_id >= 0)
++		ida_simple_remove(&vboxsf_bdi_ida, sbi->bdi_id);
++	if (sbi->nls)
++		unload_nls(sbi->nls);
++	idr_destroy(&sbi->ino_idr);
++	kfree(sbi);
++	return err;
++}
++
++static void vboxsf_inode_init_once(void *data)
++{
++	struct vboxsf_inode *sf_i = data;
++
++	mutex_init(&sf_i->handle_list_mutex);
++	inode_init_once(&sf_i->vfs_inode);
++}
++
++static struct inode *vboxsf_alloc_inode(struct super_block *sb)
++{
++	struct vboxsf_inode *sf_i;
++
++	sf_i = kmem_cache_alloc(vboxsf_inode_cachep, GFP_NOFS);
++	if (!sf_i)
++		return NULL;
++
++	sf_i->force_restat = 0;
++	INIT_LIST_HEAD(&sf_i->handle_list);
++
++	return &sf_i->vfs_inode;
++}
++
++static void vboxsf_free_inode(struct inode *inode)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(inode->i_sb);
++	unsigned long flags;
++
++	spin_lock_irqsave(&sbi->ino_idr_lock, flags);
++	idr_remove(&sbi->ino_idr, inode->i_ino);
++	spin_unlock_irqrestore(&sbi->ino_idr_lock, flags);
++	kmem_cache_free(vboxsf_inode_cachep, VBOXSF_I(inode));
++}
++
++static void vboxsf_put_super(struct super_block *sb)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(sb);
++
++	vboxsf_unmap_folder(sbi->root);
++	if (sbi->bdi_id >= 0)
++		ida_simple_remove(&vboxsf_bdi_ida, sbi->bdi_id);
++	if (sbi->nls)
++		unload_nls(sbi->nls);
++
++	/*
++	 * vboxsf_free_inode uses the idr, make sure all delayed rcu free
++	 * inodes are flushed.
++	 */
++	rcu_barrier();
++	idr_destroy(&sbi->ino_idr);
++	kfree(sbi);
++}
++
++static int vboxsf_statfs(struct dentry *dentry, struct kstatfs *stat)
++{
++	struct super_block *sb = dentry->d_sb;
++	struct shfl_volinfo shfl_volinfo;
++	struct vboxsf_sbi *sbi;
++	u32 buf_len;
++	int err;
++
++	sbi = VBOXSF_SBI(sb);
++	buf_len = sizeof(shfl_volinfo);
++	err = vboxsf_fsinfo(sbi->root, 0, SHFL_INFO_GET | SHFL_INFO_VOLUME,
++			    &buf_len, &shfl_volinfo);
++	if (err)
++		return err;
++
++	stat->f_type = VBOXSF_SUPER_MAGIC;
++	stat->f_bsize = shfl_volinfo.bytes_per_allocation_unit;
++
++	do_div(shfl_volinfo.total_allocation_bytes,
++	       shfl_volinfo.bytes_per_allocation_unit);
++	stat->f_blocks = shfl_volinfo.total_allocation_bytes;
++
++	do_div(shfl_volinfo.available_allocation_bytes,
++	       shfl_volinfo.bytes_per_allocation_unit);
++	stat->f_bfree  = shfl_volinfo.available_allocation_bytes;
++	stat->f_bavail = shfl_volinfo.available_allocation_bytes;
++
++	stat->f_files = 1000;
++	/*
++	 * Don't return 0 here since the guest may then think that it is not
++	 * possible to create any more files.
++	 */
++	stat->f_ffree = 1000000;
++	stat->f_fsid.val[0] = 0;
++	stat->f_fsid.val[1] = 0;
++	stat->f_namelen = 255;
++	return 0;
++}
++
++static struct super_operations vboxsf_super_ops = {
++	.alloc_inode	= vboxsf_alloc_inode,
++	.free_inode	= vboxsf_free_inode,
++	.put_super	= vboxsf_put_super,
++	.statfs		= vboxsf_statfs,
++};
++
++static int vboxsf_setup(void)
++{
++	int err;
++
++	mutex_lock(&vboxsf_setup_mutex);
++
++	if (vboxsf_setup_done)
++		goto success;
++
++	vboxsf_inode_cachep =
++		kmem_cache_create("vboxsf_inode_cache",
++				  sizeof(struct vboxsf_inode), 0,
++				  (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD |
++				   SLAB_ACCOUNT),
++				  vboxsf_inode_init_once);
++	if (!vboxsf_inode_cachep) {
++		err = -ENOMEM;
++		goto fail_nomem;
++	}
++
++	err = vboxsf_connect();
++	if (err) {
++		vbg_err("vboxsf: err %d connecting to guest PCI-device\n", err);
++		vbg_err("vboxsf: make sure you are inside a VirtualBox VM\n");
++		vbg_err("vboxsf: and check dmesg for vboxguest errors\n");
++		goto fail_free_cache;
++	}
++
++	err = vboxsf_set_utf8();
++	if (err) {
++		vbg_err("vboxsf_setutf8 error %d\n", err);
++		goto fail_disconnect;
++	}
++
++	if (!follow_symlinks) {
++		err = vboxsf_set_symlinks();
++		if (err)
++			vbg_warn("vboxsf: Unable to show symlinks: %d\n", err);
++	}
++
++	vboxsf_setup_done = true;
++success:
++	mutex_unlock(&vboxsf_setup_mutex);
++	return 0;
++
++fail_disconnect:
++	vboxsf_disconnect();
++fail_free_cache:
++	kmem_cache_destroy(vboxsf_inode_cachep);
++fail_nomem:
++	mutex_unlock(&vboxsf_setup_mutex);
++	return err;
++}
++
++static int vboxsf_parse_monolithic(struct fs_context *fc, void *data)
++{
++	char *options = data;
++
++	if (options && options[0] == VBSF_MOUNT_SIGNATURE_BYTE_0 &&
++		       options[1] == VBSF_MOUNT_SIGNATURE_BYTE_1 &&
++		       options[2] == VBSF_MOUNT_SIGNATURE_BYTE_2 &&
++		       options[3] == VBSF_MOUNT_SIGNATURE_BYTE_3) {
++		vbg_err("vboxsf: Old binary mount data not supported, remove obsolete mount.vboxsf and/or update your VBoxService.\n");
++		return -EINVAL;
++	}
++
++	return generic_parse_monolithic(fc, data);
++}
++
++static int vboxsf_get_tree(struct fs_context *fc)
++{
++	int err;
++
++	err = vboxsf_setup();
++	if (err)
++		return err;
++
++	return vfs_get_super(fc, vfs_get_independent_super, vboxsf_fill_super);
++}
++
++static int vboxsf_reconfigure(struct fs_context *fc)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(fc->root->d_sb);
++	struct vboxsf_fs_context *ctx = fc->fs_private;
++	struct inode *iroot;
++
++	iroot = ilookup(fc->root->d_sb, 0);
++	if (!iroot)
++		return -ENOENT;
++
++	/* Apply changed options to the root inode */
++	sbi->o = ctx->o;
++	vboxsf_init_inode(sbi, iroot, &sbi->root_info);
++
++	return 0;
++}
++
++static void vboxsf_free_fc(struct fs_context *fc)
++{
++	struct vboxsf_fs_context *ctx = fc->fs_private;
++
++	kfree(ctx->nls_name);
++	kfree(ctx);
++}
++
++static const struct fs_context_operations vboxsf_context_ops = {
++	.free			= vboxsf_free_fc,
++	.parse_param		= vboxsf_parse_param,
++	.parse_monolithic	= vboxsf_parse_monolithic,
++	.get_tree		= vboxsf_get_tree,
++	.reconfigure		= vboxsf_reconfigure,
++};
++
++static int vboxsf_init_fs_context(struct fs_context *fc)
++{
++	struct vboxsf_fs_context *ctx;
++
++	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++
++	current_uid_gid(&ctx->o.uid, &ctx->o.gid);
++
++	fc->fs_private = ctx;
++	fc->ops = &vboxsf_context_ops;
++	return 0;
++}
++
++static struct file_system_type vboxsf_fs_type = {
++	.owner			= THIS_MODULE,
++	.name			= "vboxsf",
++	.init_fs_context	= vboxsf_init_fs_context,
++	.parameters		= &vboxsf_fs_parameters,
++	.kill_sb		= kill_anon_super
++};
++
++/* Module initialization/finalization handlers */
++static int __init vboxsf_init(void)
++{
++	return register_filesystem(&vboxsf_fs_type);
++}
++
++static void __exit vboxsf_fini(void)
++{
++	unregister_filesystem(&vboxsf_fs_type);
++
++	mutex_lock(&vboxsf_setup_mutex);
++	if (vboxsf_setup_done) {
++		vboxsf_disconnect();
++		/*
++		 * Make sure all delayed rcu free inodes are flushed
++		 * before we destroy the cache.
++		 */
++		rcu_barrier();
++		kmem_cache_destroy(vboxsf_inode_cachep);
++	}
++	mutex_unlock(&vboxsf_setup_mutex);
++}
++
++module_init(vboxsf_init);
++module_exit(vboxsf_fini);
++
++MODULE_DESCRIPTION("Oracle VM VirtualBox Module for Host File System Access");
++MODULE_AUTHOR("Oracle Corporation");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS_FS("vboxsf");
+diff --git a/drivers/staging/vboxsf/utils.c b/drivers/staging/vboxsf/utils.c
+new file mode 100644
+index 000000000000..1870b69c824e
+--- /dev/null
++++ b/drivers/staging/vboxsf/utils.c
+@@ -0,0 +1,550 @@
++// SPDX-License-Identifier: MIT
++/*
++ * VirtualBox Guest Shared Folders support: Utility functions.
++ * Mainly conversion from/to VirtualBox/Linux data structures.
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#include <linux/namei.h>
++#include <linux/nls.h>
++#include <linux/sizes.h>
++#include <linux/vfs.h>
++#include "vfsmod.h"
++
++struct inode *vboxsf_new_inode(struct super_block *sb)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(sb);
++	struct inode *inode;
++	unsigned long flags;
++	int cursor, ret;
++	u32 gen;
++
++	inode = new_inode(sb);
++	if (!inode)
++		return ERR_PTR(-ENOMEM);
++
++	idr_preload(GFP_KERNEL);
++	spin_lock_irqsave(&sbi->ino_idr_lock, flags);
++	cursor = idr_get_cursor(&sbi->ino_idr);
++	ret = idr_alloc_cyclic(&sbi->ino_idr, inode, 1, 0, GFP_ATOMIC);
++	if (ret >= 0 && ret < cursor)
++		sbi->next_generation++;
++	gen = sbi->next_generation;
++	spin_unlock_irqrestore(&sbi->ino_idr_lock, flags);
++	idr_preload_end();
++
++	if (ret < 0) {
++		iput(inode);
++		return ERR_PTR(ret);
++	}
++
++	inode->i_ino = ret;
++	inode->i_generation = gen;
++	return inode;
++}
++
++/* set [inode] attributes based on [info], uid/gid based on [sbi] */
++void vboxsf_init_inode(struct vboxsf_sbi *sbi, struct inode *inode,
++		       const struct shfl_fsobjinfo *info)
++{
++	const struct shfl_fsobjattr *attr;
++	s64 allocated;
++	int mode;
++
++	attr = &info->attr;
++
++#define mode_set(r) ((attr->mode & (SHFL_UNIX_##r)) ? (S_##r) : 0)
++
++	mode = mode_set(IRUSR);
++	mode |= mode_set(IWUSR);
++	mode |= mode_set(IXUSR);
++
++	mode |= mode_set(IRGRP);
++	mode |= mode_set(IWGRP);
++	mode |= mode_set(IXGRP);
++
++	mode |= mode_set(IROTH);
++	mode |= mode_set(IWOTH);
++	mode |= mode_set(IXOTH);
++
++#undef mode_set
++
++	/* We use the host-side values for these */
++	inode->i_flags |= S_NOATIME | S_NOCMTIME;
++	inode->i_mapping->a_ops = &vboxsf_reg_aops;
++
++	if (SHFL_IS_DIRECTORY(attr->mode)) {
++		inode->i_mode = sbi->o.dmode_set ? sbi->o.dmode : mode;
++		inode->i_mode &= ~sbi->o.dmask;
++		inode->i_mode |= S_IFDIR;
++		inode->i_op = &vboxsf_dir_iops;
++		inode->i_fop = &vboxsf_dir_fops;
++		/*
++		 * XXX: this probably should be set to the number of entries
++		 * in the directory plus two (. ..)
++		 */
++		set_nlink(inode, 1);
++	} else if (SHFL_IS_SYMLINK(attr->mode)) {
++		inode->i_mode = sbi->o.fmode_set ? sbi->o.fmode : mode;
++		inode->i_mode &= ~sbi->o.fmask;
++		inode->i_mode |= S_IFLNK;
++		inode->i_op = &vboxsf_lnk_iops;
++		set_nlink(inode, 1);
++	} else {
++		inode->i_mode = sbi->o.fmode_set ? sbi->o.fmode : mode;
++		inode->i_mode &= ~sbi->o.fmask;
++		inode->i_mode |= S_IFREG;
++		inode->i_op = &vboxsf_reg_iops;
++		inode->i_fop = &vboxsf_reg_fops;
++		set_nlink(inode, 1);
++	}
++
++	inode->i_uid = sbi->o.uid;
++	inode->i_gid = sbi->o.gid;
++
++	inode->i_size = info->size;
++	inode->i_blkbits = 12;
++	/* i_blocks always in units of 512 bytes! */
++	allocated = info->allocated + 511;
++	do_div(allocated, 512);
++	inode->i_blocks = allocated;
++
++	inode->i_atime = ns_to_timespec64(
++				 info->access_time.ns_relative_to_unix_epoch);
++	inode->i_ctime = ns_to_timespec64(
++				 info->change_time.ns_relative_to_unix_epoch);
++	inode->i_mtime = ns_to_timespec64(
++			   info->modification_time.ns_relative_to_unix_epoch);
++}
++
++int vboxsf_create_at_dentry(struct dentry *dentry,
++			    struct shfl_createparms *params)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(dentry->d_sb);
++	struct shfl_string *path;
++	int err;
++
++	path = vboxsf_path_from_dentry(sbi, dentry);
++	if (IS_ERR(path))
++		return PTR_ERR(path);
++
++	err = vboxsf_create(sbi->root, path, params);
++	__putname(path);
++
++	return err;
++}
++
++int vboxsf_stat(struct vboxsf_sbi *sbi, struct shfl_string *path,
++		struct shfl_fsobjinfo *info)
++{
++	struct shfl_createparms params = {};
++	int err;
++
++	params.handle = SHFL_HANDLE_NIL;
++	params.create_flags = SHFL_CF_LOOKUP | SHFL_CF_ACT_FAIL_IF_NEW;
++
++	err = vboxsf_create(sbi->root, path, &params);
++	if (err)
++		return err;
++
++	if (params.result != SHFL_FILE_EXISTS)
++		return -ENOENT;
++
++	if (info)
++		*info = params.info;
++
++	return 0;
++}
++
++int vboxsf_stat_dentry(struct dentry *dentry, struct shfl_fsobjinfo *info)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(dentry->d_sb);
++	struct shfl_string *path;
++	int err;
++
++	path = vboxsf_path_from_dentry(sbi, dentry);
++	if (IS_ERR(path))
++		return PTR_ERR(path);
++
++	err = vboxsf_stat(sbi, path, info);
++	__putname(path);
++	return err;
++}
++
++int vboxsf_inode_revalidate(struct dentry *dentry)
++{
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(dentry->d_sb);
++	struct vboxsf_inode *sf_i;
++	struct shfl_fsobjinfo info;
++	struct timespec64 prev_mtime;
++	struct inode *inode;
++	int err;
++
++	if (!dentry || !d_really_is_positive(dentry))
++		return -EINVAL;
++
++	inode = d_inode(dentry);
++	prev_mtime = inode->i_mtime;
++	sf_i = VBOXSF_I(inode);
++	if (!sf_i->force_restat) {
++		if (time_before(jiffies, dentry->d_time + sbi->o.ttl))
++			return 0;
++	}
++
++	err = vboxsf_stat_dentry(dentry, &info);
++	if (err)
++		return err;
++
++	dentry->d_time = jiffies;
++	sf_i->force_restat = 0;
++	vboxsf_init_inode(sbi, inode, &info);
++
++	/*
++	 * If the file was changed on the host side we need to invalidate the
++	 * page-cache for it.  Note this also gets triggered by our own writes,
++	 * this is unavoidable.
++	 */
++	if (timespec64_compare(&inode->i_mtime, &prev_mtime) > 0)
++		invalidate_inode_pages2(inode->i_mapping);
++
++	return 0;
++}
++
++int vboxsf_getattr(const struct path *path, struct kstat *kstat,
++		   u32 request_mask, unsigned int flags)
++{
++	int err;
++	struct dentry *dentry = path->dentry;
++	struct inode *inode = d_inode(dentry);
++	struct vboxsf_inode *sf_i = VBOXSF_I(inode);
++
++	switch (flags & AT_STATX_SYNC_TYPE) {
++	case AT_STATX_DONT_SYNC:
++		err = 0;
++		break;
++	case AT_STATX_FORCE_SYNC:
++		sf_i->force_restat = 1;
++		/* fall-through */
++	default:
++		err = vboxsf_inode_revalidate(dentry);
++	}
++	if (err)
++		return err;
++
++	generic_fillattr(d_inode(dentry), kstat);
++	return 0;
++}
++
++int vboxsf_setattr(struct dentry *dentry, struct iattr *iattr)
++{
++	struct vboxsf_inode *sf_i = VBOXSF_I(d_inode(dentry));
++	struct vboxsf_sbi *sbi = VBOXSF_SBI(dentry->d_sb);
++	struct shfl_createparms params = {};
++	struct shfl_fsobjinfo info = {};
++	u32 buf_len;
++	int err;
++
++	params.handle = SHFL_HANDLE_NIL;
++	params.create_flags = SHFL_CF_ACT_OPEN_IF_EXISTS |
++			      SHFL_CF_ACT_FAIL_IF_NEW |
++			      SHFL_CF_ACCESS_ATTR_WRITE;
++
++	/* this is at least required for Posix hosts */
++	if (iattr->ia_valid & ATTR_SIZE)
++		params.create_flags |= SHFL_CF_ACCESS_WRITE;
++
++	err = vboxsf_create_at_dentry(dentry, &params);
++	if (err || params.result != SHFL_FILE_EXISTS)
++		return err ? err : -ENOENT;
++
++#define mode_set(r) ((iattr->ia_mode & (S_##r)) ? SHFL_UNIX_##r : 0)
++
++	/*
++	 * Setting the file size and setting the other attributes has to
++	 * be handled separately.
++	 */
++	if (iattr->ia_valid & (ATTR_MODE | ATTR_ATIME | ATTR_MTIME)) {
++		if (iattr->ia_valid & ATTR_MODE) {
++			info.attr.mode = mode_set(IRUSR);
++			info.attr.mode |= mode_set(IWUSR);
++			info.attr.mode |= mode_set(IXUSR);
++			info.attr.mode |= mode_set(IRGRP);
++			info.attr.mode |= mode_set(IWGRP);
++			info.attr.mode |= mode_set(IXGRP);
++			info.attr.mode |= mode_set(IROTH);
++			info.attr.mode |= mode_set(IWOTH);
++			info.attr.mode |= mode_set(IXOTH);
++
++			if (iattr->ia_mode & S_IFDIR)
++				info.attr.mode |= SHFL_TYPE_DIRECTORY;
++			else
++				info.attr.mode |= SHFL_TYPE_FILE;
++		}
++
++		if (iattr->ia_valid & ATTR_ATIME)
++			info.access_time.ns_relative_to_unix_epoch =
++					    timespec64_to_ns(&iattr->ia_atime);
++
++		if (iattr->ia_valid & ATTR_MTIME)
++			info.modification_time.ns_relative_to_unix_epoch =
++					    timespec64_to_ns(&iattr->ia_mtime);
++
++		/*
++		 * Ignore ctime (inode change time) as it can't be set
++		 * from userland anyway.
++		 */
++
++		buf_len = sizeof(info);
++		err = vboxsf_fsinfo(sbi->root, params.handle,
++				    SHFL_INFO_SET | SHFL_INFO_FILE, &buf_len,
++				    &info);
++		if (err) {
++			vboxsf_close(sbi->root, params.handle);
++			return err;
++		}
++
++		/* the host may have given us different attr then requested */
++		sf_i->force_restat = 1;
++	}
++
++#undef mode_set
++
++	if (iattr->ia_valid & ATTR_SIZE) {
++		memset(&info, 0, sizeof(info));
++		info.size = iattr->ia_size;
++		buf_len = sizeof(info);
++		err = vboxsf_fsinfo(sbi->root, params.handle,
++				    SHFL_INFO_SET | SHFL_INFO_SIZE, &buf_len,
++				    &info);
++		if (err) {
++			vboxsf_close(sbi->root, params.handle);
++			return err;
++		}
++
++		/* the host may have given us different attr then requested */
++		sf_i->force_restat = 1;
++	}
++
++	vboxsf_close(sbi->root, params.handle);
++
++	/* Update the inode with what the host has actually given us. */
++	if (sf_i->force_restat)
++		vboxsf_inode_revalidate(dentry);
++
++	return 0;
++}
++
++/*
++ * [dentry] contains string encoded in coding system that corresponds
++ * to [sbi]->nls, we must convert it to UTF8 here.
++ * Returns a shfl_string allocated through __getname (must be freed using
++ * __putname), or an ERR_PTR on error.
++ */
++struct shfl_string *vboxsf_path_from_dentry(struct vboxsf_sbi *sbi,
++					    struct dentry *dentry)
++{
++	struct shfl_string *shfl_path;
++	int path_len, out_len, nb;
++	char *buf, *path;
++	wchar_t uni;
++	u8 *out;
++
++	buf = __getname();
++	if (!buf)
++		return ERR_PTR(-ENOMEM);
++
++	path = dentry_path_raw(dentry, buf, PATH_MAX);
++	if (IS_ERR(path)) {
++		__putname(buf);
++		return (struct shfl_string *)path;
++	}
++	path_len = strlen(path);
++
++	if (sbi->nls) {
++		shfl_path = __getname();
++		if (!shfl_path) {
++			__putname(buf);
++			return ERR_PTR(-ENOMEM);
++		}
++
++		out = shfl_path->string.utf8;
++		out_len = PATH_MAX - SHFLSTRING_HEADER_SIZE - 1;
++
++		while (path_len) {
++			nb = sbi->nls->char2uni(path, path_len, &uni);
++			if (nb < 0) {
++				__putname(shfl_path);
++				__putname(buf);
++				return ERR_PTR(-EINVAL);
++			}
++			path += nb;
++			path_len -= nb;
++
++			nb = utf32_to_utf8(uni, out, out_len);
++			if (nb < 0) {
++				__putname(shfl_path);
++				__putname(buf);
++				return ERR_PTR(-ENAMETOOLONG);
++			}
++			out += nb;
++			out_len -= nb;
++		}
++		*out = 0;
++		shfl_path->length = out - shfl_path->string.utf8;
++		shfl_path->size = shfl_path->length + 1;
++		__putname(buf);
++	} else {
++		if ((SHFLSTRING_HEADER_SIZE + path_len + 1) > PATH_MAX) {
++			__putname(buf);
++			return ERR_PTR(-ENAMETOOLONG);
++		}
++		/*
++		 * dentry_path stores the name at the end of buf, but the
++		 * shfl_string string we return must be properly aligned.
++		 */
++		shfl_path = (struct shfl_string *)buf;
++		memmove(shfl_path->string.utf8, path, path_len);
++		shfl_path->string.utf8[path_len] = 0;
++		shfl_path->length = path_len;
++		shfl_path->size = path_len + 1;
++	}
++
++	return shfl_path;
++}
++
++int vboxsf_nlscpy(struct vboxsf_sbi *sbi, char *name, size_t name_bound_len,
++		  const unsigned char *utf8_name, size_t utf8_len)
++{
++	const char *in;
++	char *out;
++	size_t out_len;
++	size_t out_bound_len;
++	size_t in_bound_len;
++
++	in = utf8_name;
++	in_bound_len = utf8_len;
++
++	out = name;
++	out_len = 0;
++	/* Reserve space for terminating 0 */
++	out_bound_len = name_bound_len - 1;
++
++	while (in_bound_len) {
++		int nb;
++		unicode_t uni;
++
++		nb = utf8_to_utf32(in, in_bound_len, &uni);
++		if (nb < 0)
++			return -EINVAL;
++
++		in += nb;
++		in_bound_len -= nb;
++
++		nb = sbi->nls->uni2char(uni, out, out_bound_len);
++		if (nb < 0)
++			return nb;
++
++		out += nb;
++		out_bound_len -= nb;
++		out_len += nb;
++	}
++
++	*out = 0;
++
++	return 0;
++}
++
++static struct vboxsf_dir_buf *vboxsf_dir_buf_alloc(struct list_head *list)
++{
++	struct vboxsf_dir_buf *b;
++
++	b = kmalloc(sizeof(*b), GFP_KERNEL);
++	if (!b)
++		return NULL;
++
++	b->buf = kmalloc(DIR_BUFFER_SIZE, GFP_KERNEL);
++	if (!b->buf) {
++		kfree(b);
++		return NULL;
++	}
++
++	b->entries = 0;
++	b->used = 0;
++	b->free = DIR_BUFFER_SIZE;
++	list_add(&b->head, list);
++
++	return b;
++}
++
++static void vboxsf_dir_buf_free(struct vboxsf_dir_buf *b)
++{
++	list_del(&b->head);
++	kfree(b->buf);
++	kfree(b);
++}
++
++struct vboxsf_dir_info *vboxsf_dir_info_alloc(void)
++{
++	struct vboxsf_dir_info *p;
++
++	p = kmalloc(sizeof(*p), GFP_KERNEL);
++	if (!p)
++		return NULL;
++
++	INIT_LIST_HEAD(&p->info_list);
++	return p;
++}
++
++void vboxsf_dir_info_free(struct vboxsf_dir_info *p)
++{
++	struct list_head *list, *pos, *tmp;
++
++	list = &p->info_list;
++	list_for_each_safe(pos, tmp, list) {
++		struct vboxsf_dir_buf *b;
++
++		b = list_entry(pos, struct vboxsf_dir_buf, head);
++		vboxsf_dir_buf_free(b);
++	}
++	kfree(p);
++}
++
++int vboxsf_dir_read_all(struct vboxsf_sbi *sbi, struct vboxsf_dir_info *sf_d,
++			u64 handle)
++{
++	struct vboxsf_dir_buf *b;
++	u32 entries, size;
++	int err = 0;
++	void *buf;
++
++	/* vboxsf_dirinfo returns 1 on end of dir */
++	while (err == 0) {
++		b = vboxsf_dir_buf_alloc(&sf_d->info_list);
++		if (!b) {
++			err = -ENOMEM;
++			break;
++		}
++
++		buf = b->buf;
++		size = b->free;
++
++		err = vboxsf_dirinfo(sbi->root, handle, NULL, 0, 0,
++				     &size, buf, &entries);
++		if (err < 0)
++			break;
++
++		b->entries += entries;
++		b->free -= size;
++		b->used += size;
++	}
++
++	if (b && b->used == 0)
++		vboxsf_dir_buf_free(b);
++
++	/* -EILSEQ means the host could not translate a filename, ignore */
++	if (err > 0 || err == -EILSEQ)
++		err = 0;
++
++	return err;
++}
+diff --git a/drivers/staging/vboxsf/vboxsf_wrappers.c b/drivers/staging/vboxsf/vboxsf_wrappers.c
+new file mode 100644
+index 000000000000..bfc78a097dae
+--- /dev/null
++++ b/drivers/staging/vboxsf/vboxsf_wrappers.c
+@@ -0,0 +1,371 @@
++// SPDX-License-Identifier: MIT
++/*
++ * Wrapper functions for the shfl host calls.
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/vbox_err.h>
++#include <linux/vbox_utils.h>
++#include "vfsmod.h"
++
++#define SHFL_REQUEST \
++	(VMMDEV_REQUESTOR_KERNEL | VMMDEV_REQUESTOR_USR_DRV_OTHER | \
++	 VMMDEV_REQUESTOR_CON_DONT_KNOW | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN)
++
++static u32 vboxsf_client_id;
++
++int vboxsf_connect(void)
++{
++	struct vbg_dev *gdev;
++	struct vmmdev_hgcm_service_location loc;
++	int err, vbox_status;
++
++	loc.type = VMMDEV_HGCM_LOC_LOCALHOST_EXISTING;
++	strcpy(loc.u.localhost.service_name, "VBoxSharedFolders");
++
++	gdev = vbg_get_gdev();
++	if (IS_ERR(gdev))
++		return -ENODEV;	/* No guest-device */
++
++	err = vbg_hgcm_connect(gdev, SHFL_REQUEST, &loc,
++			       &vboxsf_client_id, &vbox_status);
++	vbg_put_gdev(gdev);
++
++	return err ? err : vbg_status_code_to_errno(vbox_status);
++}
++
++void vboxsf_disconnect(void)
++{
++	struct vbg_dev *gdev;
++	int vbox_status;
++
++	gdev = vbg_get_gdev();
++	if (IS_ERR(gdev))
++		return;   /* guest-device is gone, already disconnected */
++
++	vbg_hgcm_disconnect(gdev, SHFL_REQUEST, vboxsf_client_id, &vbox_status);
++	vbg_put_gdev(gdev);
++}
++
++static int vboxsf_call(u32 function, void *parms, u32 parm_count, int *status)
++{
++	struct vbg_dev *gdev;
++	int err, vbox_status;
++
++	gdev = vbg_get_gdev();
++	if (IS_ERR(gdev))
++		return -ESHUTDOWN; /* guest-dev removed underneath us */
++
++	err = vbg_hgcm_call(gdev, SHFL_REQUEST, vboxsf_client_id, function,
++			    U32_MAX, parms, parm_count, &vbox_status);
++	vbg_put_gdev(gdev);
++
++	if (err < 0)
++		return err;
++
++	if (status)
++		*status = vbox_status;
++
++	return vbg_status_code_to_errno(vbox_status);
++}
++
++int vboxsf_map_folder(struct shfl_string *folder_name, u32 *root)
++{
++	struct shfl_map_folder parms;
++	int err, status;
++
++	parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL;
++	parms.path.u.pointer.size = shfl_string_buf_size(folder_name);
++	parms.path.u.pointer.u.linear_addr = (uintptr_t)folder_name;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = 0;
++
++	parms.delimiter.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.delimiter.u.value32 = '/';
++
++	parms.case_sensitive.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.case_sensitive.u.value32 = 1;
++
++	err = vboxsf_call(SHFL_FN_MAP_FOLDER, &parms, SHFL_CPARMS_MAP_FOLDER,
++			  &status);
++	if (err == -ENOSYS && status == VERR_NOT_IMPLEMENTED)
++		vbg_err("%s: Error host is too old\n", __func__);
++
++	*root = parms.root.u.value32;
++	return err;
++}
++
++int vboxsf_unmap_folder(u32 root)
++{
++	struct shfl_unmap_folder parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	return vboxsf_call(SHFL_FN_UNMAP_FOLDER, &parms,
++			   SHFL_CPARMS_UNMAP_FOLDER, NULL);
++}
++
++/**
++ * vboxsf_create - Create a new file or folder
++ * @root:         Root of the shared folder in which to create the file
++ * @parsed_path:  The path of the file or folder relative to the shared folder
++ * @param:        create_parms Parameters for file/folder creation.
++ *
++ * Create a new file or folder or open an existing one in a shared folder.
++ * Note this function always returns 0 / success unless an exceptional condition
++ * occurs - out of memory, invalid arguments, etc. If the file or folder could
++ * not be opened or created, create_parms->handle will be set to
++ * SHFL_HANDLE_NIL on return.  In this case the value in create_parms->result
++ * provides information as to why (e.g. SHFL_FILE_EXISTS), create_parms->result
++ * is also set on success as additional information.
++ *
++ * Returns:
++ * 0 or negative errno value.
++ */
++int vboxsf_create(u32 root, struct shfl_string *parsed_path,
++		  struct shfl_createparms *create_parms)
++{
++	struct shfl_create parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL;
++	parms.path.u.pointer.size = shfl_string_buf_size(parsed_path);
++	parms.path.u.pointer.u.linear_addr = (uintptr_t)parsed_path;
++
++	parms.parms.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL;
++	parms.parms.u.pointer.size = sizeof(struct shfl_createparms);
++	parms.parms.u.pointer.u.linear_addr = (uintptr_t)create_parms;
++
++	return vboxsf_call(SHFL_FN_CREATE, &parms, SHFL_CPARMS_CREATE, NULL);
++}
++
++int vboxsf_close(u32 root, u64 handle)
++{
++	struct shfl_close parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.handle.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.handle.u.value64 = handle;
++
++	return vboxsf_call(SHFL_FN_CLOSE, &parms, SHFL_CPARMS_CLOSE, NULL);
++}
++
++int vboxsf_remove(u32 root, struct shfl_string *parsed_path, u32 flags)
++{
++	struct shfl_remove parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.path.u.pointer.size = shfl_string_buf_size(parsed_path);
++	parms.path.u.pointer.u.linear_addr = (uintptr_t)parsed_path;
++
++	parms.flags.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.flags.u.value32 = flags;
++
++	return vboxsf_call(SHFL_FN_REMOVE, &parms, SHFL_CPARMS_REMOVE, NULL);
++}
++
++int vboxsf_rename(u32 root, struct shfl_string *src_path,
++		  struct shfl_string *dest_path, u32 flags)
++{
++	struct shfl_rename parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.src.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.src.u.pointer.size = shfl_string_buf_size(src_path);
++	parms.src.u.pointer.u.linear_addr = (uintptr_t)src_path;
++
++	parms.dest.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.dest.u.pointer.size = shfl_string_buf_size(dest_path);
++	parms.dest.u.pointer.u.linear_addr = (uintptr_t)dest_path;
++
++	parms.flags.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.flags.u.value32 = flags;
++
++	return vboxsf_call(SHFL_FN_RENAME, &parms, SHFL_CPARMS_RENAME, NULL);
++}
++
++int vboxsf_read(u32 root, u64 handle, u64 offset, u32 *buf_len, u8 *buf)
++{
++	struct shfl_read parms;
++	int err;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.handle.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.handle.u.value64 = handle;
++	parms.offset.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.offset.u.value64 = offset;
++	parms.cb.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.cb.u.value32 = *buf_len;
++	parms.buffer.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_OUT;
++	parms.buffer.u.pointer.size = *buf_len;
++	parms.buffer.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	err = vboxsf_call(SHFL_FN_READ, &parms, SHFL_CPARMS_READ, NULL);
++
++	*buf_len = parms.cb.u.value32;
++	return err;
++}
++
++int vboxsf_write(u32 root, u64 handle, u64 offset, u32 *buf_len, u8 *buf)
++{
++	struct shfl_write parms;
++	int err;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.handle.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.handle.u.value64 = handle;
++	parms.offset.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.offset.u.value64 = offset;
++	parms.cb.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.cb.u.value32 = *buf_len;
++	parms.buffer.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.buffer.u.pointer.size = *buf_len;
++	parms.buffer.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	err = vboxsf_call(SHFL_FN_WRITE, &parms, SHFL_CPARMS_WRITE, NULL);
++
++	*buf_len = parms.cb.u.value32;
++	return err;
++}
++
++/* Returns 0 on success, 1 on end-of-dir, negative errno otherwise */
++int vboxsf_dirinfo(u32 root, u64 handle,
++		   struct shfl_string *parsed_path, u32 flags, u32 index,
++		   u32 *buf_len, struct shfl_dirinfo *buf, u32 *file_count)
++{
++	struct shfl_list parms;
++	int err, status;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.handle.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.handle.u.value64 = handle;
++	parms.flags.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.flags.u.value32 = flags;
++	parms.cb.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.cb.u.value32 = *buf_len;
++	if (parsed_path) {
++		parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++		parms.path.u.pointer.size = shfl_string_buf_size(parsed_path);
++		parms.path.u.pointer.u.linear_addr = (uintptr_t)parsed_path;
++	} else {
++		parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_IN;
++		parms.path.u.pointer.size = 0;
++		parms.path.u.pointer.u.linear_addr = 0;
++	}
++
++	parms.buffer.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_OUT;
++	parms.buffer.u.pointer.size = *buf_len;
++	parms.buffer.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	parms.resume_point.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.resume_point.u.value32 = index;
++	parms.file_count.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.file_count.u.value32 = 0;	/* out parameter only */
++
++	err = vboxsf_call(SHFL_FN_LIST, &parms, SHFL_CPARMS_LIST, &status);
++	if (err == -ENODATA && status == VERR_NO_MORE_FILES)
++		err = 1;
++
++	*buf_len = parms.cb.u.value32;
++	*file_count = parms.file_count.u.value32;
++	return err;
++}
++
++int vboxsf_fsinfo(u32 root, u64 handle, u32 flags,
++		  u32 *buf_len, void *buf)
++{
++	struct shfl_information parms;
++	int err;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.handle.type = VMMDEV_HGCM_PARM_TYPE_64BIT;
++	parms.handle.u.value64 = handle;
++	parms.flags.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.flags.u.value32 = flags;
++	parms.cb.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.cb.u.value32 = *buf_len;
++	parms.info.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL;
++	parms.info.u.pointer.size = *buf_len;
++	parms.info.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	err = vboxsf_call(SHFL_FN_INFORMATION, &parms, SHFL_CPARMS_INFORMATION,
++			  NULL);
++
++	*buf_len = parms.cb.u.value32;
++	return err;
++}
++
++int vboxsf_readlink(u32 root, struct shfl_string *parsed_path,
++		    u32 buf_len, u8 *buf)
++{
++	struct shfl_readLink parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.path.u.pointer.size = shfl_string_buf_size(parsed_path);
++	parms.path.u.pointer.u.linear_addr = (uintptr_t)parsed_path;
++
++	parms.buffer.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_OUT;
++	parms.buffer.u.pointer.size = buf_len;
++	parms.buffer.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	return vboxsf_call(SHFL_FN_READLINK, &parms, SHFL_CPARMS_READLINK,
++			   NULL);
++}
++
++int vboxsf_symlink(u32 root, struct shfl_string *new_path,
++		   struct shfl_string *old_path, struct shfl_fsobjinfo *buf)
++{
++	struct shfl_symlink parms;
++
++	parms.root.type = VMMDEV_HGCM_PARM_TYPE_32BIT;
++	parms.root.u.value32 = root;
++
++	parms.new_path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.new_path.u.pointer.size = shfl_string_buf_size(new_path);
++	parms.new_path.u.pointer.u.linear_addr = (uintptr_t)new_path;
++
++	parms.old_path.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_IN;
++	parms.old_path.u.pointer.size = shfl_string_buf_size(old_path);
++	parms.old_path.u.pointer.u.linear_addr = (uintptr_t)old_path;
++
++	parms.info.type = VMMDEV_HGCM_PARM_TYPE_LINADDR_KERNEL_OUT;
++	parms.info.u.pointer.size = sizeof(struct shfl_fsobjinfo);
++	parms.info.u.pointer.u.linear_addr = (uintptr_t)buf;
++
++	return vboxsf_call(SHFL_FN_SYMLINK, &parms, SHFL_CPARMS_SYMLINK, NULL);
++}
++
++int vboxsf_set_utf8(void)
++{
++	return vboxsf_call(SHFL_FN_SET_UTF8, NULL, 0, NULL);
++}
++
++int vboxsf_set_symlinks(void)
++{
++	return vboxsf_call(SHFL_FN_SET_SYMLINKS, NULL, 0, NULL);
++}
+diff --git a/drivers/staging/vboxsf/vfsmod.h b/drivers/staging/vboxsf/vfsmod.h
+new file mode 100644
+index 000000000000..de650d65fbe4
+--- /dev/null
++++ b/drivers/staging/vboxsf/vfsmod.h
+@@ -0,0 +1,138 @@
++/* SPDX-License-Identifier: MIT */
++/*
++ * VirtualBox Guest Shared Folders support: module header.
++ *
++ * Copyright (C) 2006-2018 Oracle Corporation
++ */
++
++#ifndef VFSMOD_H
++#define VFSMOD_H
++
++#include <linux/backing-dev.h>
++#include <linux/idr.h>
++#include <linux/version.h>
++#include "shfl_hostintf.h"
++
++#define DIR_BUFFER_SIZE SZ_16K
++
++/* The cast is to prevent assignment of void * to pointers of arbitrary type */
++#define VBOXSF_SBI(sb)	((struct vboxsf_sbi *)(sb)->s_fs_info)
++#define VBOXSF_I(i)	container_of(i, struct vboxsf_inode, vfs_inode)
++
++struct vboxsf_options {
++	unsigned long ttl;
++	kuid_t uid;
++	kgid_t gid;
++	bool dmode_set;
++	bool fmode_set;
++	umode_t dmode;
++	umode_t fmode;
++	umode_t dmask;
++	umode_t fmask;
++};
++
++struct vboxsf_fs_context {
++	struct vboxsf_options o;
++	char *nls_name;
++};
++
++/* per-shared folder information */
++struct vboxsf_sbi {
++	struct vboxsf_options o;
++	struct shfl_fsobjinfo root_info;
++	struct idr ino_idr;
++	spinlock_t ino_idr_lock; /* This protects ino_idr */
++	struct nls_table *nls;
++	u32 next_generation;
++	u32 root;
++	int bdi_id;
++};
++
++/* per-inode information */
++struct vboxsf_inode {
++	/* some information was changed, update data on next revalidate */
++	int force_restat;
++	/* list of open handles for this inode + lock protecting it */
++	struct list_head handle_list;
++	/* This mutex protects handle_list accesses */
++	struct mutex handle_list_mutex;
++	/* The VFS inode struct */
++	struct inode vfs_inode;
++};
++
++struct vboxsf_dir_info {
++	struct list_head info_list;
++};
++
++struct vboxsf_dir_buf {
++	size_t entries;
++	size_t free;
++	size_t used;
++	void *buf;
++	struct list_head head;
++};
++
++/* globals */
++extern const struct inode_operations vboxsf_dir_iops;
++extern const struct inode_operations vboxsf_lnk_iops;
++extern const struct inode_operations vboxsf_reg_iops;
++extern const struct file_operations vboxsf_dir_fops;
++extern const struct file_operations vboxsf_reg_fops;
++extern const struct address_space_operations vboxsf_reg_aops;
++extern const struct dentry_operations vboxsf_dentry_ops;
++
++/* from utils.c */
++struct inode *vboxsf_new_inode(struct super_block *sb);
++void vboxsf_init_inode(struct vboxsf_sbi *sbi, struct inode *inode,
++		       const struct shfl_fsobjinfo *info);
++int vboxsf_create_at_dentry(struct dentry *dentry,
++			    struct shfl_createparms *params);
++int vboxsf_stat(struct vboxsf_sbi *sbi, struct shfl_string *path,
++		struct shfl_fsobjinfo *info);
++int vboxsf_stat_dentry(struct dentry *dentry, struct shfl_fsobjinfo *info);
++int vboxsf_inode_revalidate(struct dentry *dentry);
++int vboxsf_getattr(const struct path *path, struct kstat *kstat,
++		   u32 request_mask, unsigned int query_flags);
++int vboxsf_setattr(struct dentry *dentry, struct iattr *iattr);
++struct shfl_string *vboxsf_path_from_dentry(struct vboxsf_sbi *sbi,
++					    struct dentry *dentry);
++int vboxsf_nlscpy(struct vboxsf_sbi *sbi, char *name, size_t name_bound_len,
++		  const unsigned char *utf8_name, size_t utf8_len);
++struct vboxsf_dir_info *vboxsf_dir_info_alloc(void);
++void vboxsf_dir_info_free(struct vboxsf_dir_info *p);
++int vboxsf_dir_read_all(struct vboxsf_sbi *sbi, struct vboxsf_dir_info *sf_d,
++			u64 handle);
++
++/* from vboxsf_wrappers.c */
++int vboxsf_connect(void);
++void vboxsf_disconnect(void);
++
++int vboxsf_create(u32 root, struct shfl_string *parsed_path,
++		  struct shfl_createparms *create_parms);
++
++int vboxsf_close(u32 root, u64 handle);
++int vboxsf_remove(u32 root, struct shfl_string *parsed_path, u32 flags);
++int vboxsf_rename(u32 root, struct shfl_string *src_path,
++		  struct shfl_string *dest_path, u32 flags);
++
++int vboxsf_read(u32 root, u64 handle, u64 offset, u32 *buf_len, u8 *buf);
++int vboxsf_write(u32 root, u64 handle, u64 offset, u32 *buf_len, u8 *buf);
++
++int vboxsf_dirinfo(u32 root, u64 handle,
++		   struct shfl_string *parsed_path, u32 flags, u32 index,
++		   u32 *buf_len, struct shfl_dirinfo *buf, u32 *file_count);
++int vboxsf_fsinfo(u32 root, u64 handle, u32 flags,
++		  u32 *buf_len, void *buf);
++
++int vboxsf_map_folder(struct shfl_string *folder_name, u32 *root);
++int vboxsf_unmap_folder(u32 root);
++
++int vboxsf_readlink(u32 root, struct shfl_string *parsed_path,
++		    u32 buf_len, u8 *buf);
++int vboxsf_symlink(u32 root, struct shfl_string *new_path,
++		   struct shfl_string *old_path, struct shfl_fsobjinfo *buf);
++
++int vboxsf_set_utf8(void);
++int vboxsf_set_symlinks(void);
++
++#endif
+-- 
+cgit 1.2-0.3.lf.el7
+
diff --git a/kernel/kernel/files/patches/pisilinux/kernel-5.4-build-fix.patch b/kernel/kernel/files/patches/pisilinux/kernel-5.4-build-fix.patch
new file mode 100644
index 00000000..c1de3106
--- /dev/null
+++ b/kernel/kernel/files/patches/pisilinux/kernel-5.4-build-fix.patch
@@ -0,0 +1,18 @@
+--- a/Makefile.orig	2019-11-25 03:32:01.000000000 +0300
++++ b/Makefile	2019-12-11 03:20:12.876664698 +0300
+@@ -509,15 +509,6 @@
+ # ignore whole output directory
+ outputmakefile:
+ ifdef building_out_of_srctree
+-	$(Q)if [ -f $(srctree)/.config -o \
+-		 -d $(srctree)/include/config -o \
+-		 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
+-		echo >&2 "***"; \
+-		echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \
+-		echo >&2 "*** in $(abs_srctree)";\
+-		echo >&2 "***"; \
+-		false; \
+-	fi
+ 	$(Q)ln -fsn $(srctree) source
+ 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
+ 	$(Q)test -e .gitignore || \
diff --git a/kernel/kernel/files/patches/pisilinux/revert-Makefile.patch b/kernel/kernel/files/patches/pisilinux/revert-Makefile.patch
new file mode 100644
index 00000000..b4b37d09
--- /dev/null
+++ b/kernel/kernel/files/patches/pisilinux/revert-Makefile.patch
@@ -0,0 +1,780 @@
+--- a/Makefile.orig	2019-11-25 03:32:01.000000000 +0300
++++ b/Makefile	2019-12-11 16:59:26.708807035 +0300
+@@ -3,7 +3,7 @@
+ PATCHLEVEL = 4
+ SUBLEVEL = 0
+ EXTRAVERSION =
+-NAME = Kleptomaniac Octopus
++NAME = Bobtail Squid
+ 
+ # *DOCUMENTATION*
+ # To see a list of typical targets execute "make help"
+@@ -206,16 +206,30 @@
+   KBUILD_CHECKSRC = 0
+ endif
+ 
+-# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the
+-# directory of external module to build. Setting M= takes precedence.
++# Use make M=dir to specify directory of external module to build
++# Old syntax make ... SUBDIRS=$PWD is still supported
++# Setting the environment variable KBUILD_EXTMOD take precedence
++ifdef SUBDIRS
++  $(warning ================= WARNING ================)
++  $(warning 'SUBDIRS' will be removed after Linux 5.3)
++  $(warning )
++  $(warning If you are building an individual subdirectory)
++  $(warning in the kernel tree, you can do like this:)
++  $(warning $$ make path/to/dir/you/want/to/build/)
++  $(warning (Do not forget the trailing slash))
++  $(warning )
++  $(warning If you are building an external module,)
++  $(warning Please use 'M=' or 'KBUILD_EXTMOD' instead)
++  $(warning ==========================================)
++  KBUILD_EXTMOD ?= $(SUBDIRS)
++endif
++
+ ifeq ("$(origin M)", "command line")
+   KBUILD_EXTMOD := $(M)
+ endif
+ 
+ export KBUILD_CHECKSRC KBUILD_EXTMOD
+ 
+-extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)
+-
+ ifeq ($(abs_srctree),$(abs_objtree))
+         # building in the source tree
+         srctree := .
+@@ -257,62 +271,52 @@
+ 			 %asm-generic kernelversion %src-pkg
+ no-sync-config-targets := $(no-dot-config-targets) install %install \
+ 			   kernelrelease
+-single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
+ 
+-config-build	:=
+-mixed-build	:=
+-need-config	:= 1
+-may-sync-config	:= 1
+-single-build	:=
++config-targets  := 0
++mixed-targets   := 0
++dot-config      := 1
++may-sync-config := 1
+ 
+ ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
+ 	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
+-		need-config :=
++		dot-config := 0
+ 	endif
+ endif
+ 
+ ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
+ 	ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
+-		may-sync-config :=
++		may-sync-config := 0
+ 	endif
+ endif
+ 
+ ifneq ($(KBUILD_EXTMOD),)
+-	may-sync-config :=
++	may-sync-config := 0
+ endif
+ 
+ ifeq ($(KBUILD_EXTMOD),)
+         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
+-		config-build := 1
++                config-targets := 1
+                 ifneq ($(words $(MAKECMDGOALS)),1)
+-			mixed-build := 1
++                        mixed-targets := 1
+                 endif
+         endif
+ endif
+ 
+-# We cannot build single targets and the others at the same time
+-ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),)
+-	single-build := 1
+-	ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
+-		mixed-build := 1
+-	endif
+-endif
+-
+ # For "make -j clean all", "make -j mrproper defconfig all", etc.
+ ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
+         ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
+-		mixed-build := 1
++                mixed-targets := 1
+         endif
+ endif
+ 
+ # install and modules_install need also be processed one by one
+ ifneq ($(filter install,$(MAKECMDGOALS)),)
+         ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+-		mixed-build := 1
++	        mixed-targets := 1
+         endif
+ endif
+ 
+-ifdef mixed-build
++ifeq ($(mixed-targets),1)
+ # ===========================================================================
+ # We're called with mixed targets (*config and build targets).
+ # Handle them one by one.
+@@ -328,7 +332,7 @@
+ 		$(MAKE) -f $(srctree)/Makefile $$i; \
+ 	done
+ 
+-else # !mixed-build
++else
+ 
+ include scripts/Kbuild.include
+ 
+@@ -388,7 +392,9 @@
+ export KCONFIG_CONFIG
+ 
+ # SHELL used by kbuild
+-CONFIG_SHELL := sh
++CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
++	  else if [ -x /bin/bash ]; then echo /bin/bash; \
++	  else echo sh; fi ; fi)
+ 
+ HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
+ HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
+@@ -425,7 +431,6 @@
+ PYTHON2		= python2
+ PYTHON3		= python3
+ CHECK		= sparse
+-BASH		= bash
+ 
+ CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
+ 		  -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
+@@ -465,13 +470,12 @@
+ KBUILD_CFLAGS_KERNEL :=
+ KBUILD_AFLAGS_MODULE  := -DMODULE
+ KBUILD_CFLAGS_MODULE  := -DMODULE
+-KBUILD_LDFLAGS_MODULE :=
+-export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds
++KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
+ KBUILD_LDFLAGS :=
+ GCC_PLUGINS_CFLAGS :=
+ CLANG_FLAGS :=
+ 
+-export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
++export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
+ export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
+ export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
+ export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
+@@ -482,6 +486,7 @@
+ export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+ export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
+ export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
++export KBUILD_ARFLAGS
+ 
+ # Files to ignore in find ... statements
+ 
+@@ -501,7 +506,6 @@
+ 	$(Q)rm -f .tmp_quiet_recordmcount
+ 
+ PHONY += outputmakefile
+-# Before starting out-of-tree build, make sure the source tree is clean.
+ # outputmakefile generates a Makefile in the output directory, if using a
+ # separate output directory. This allows convenient use of make in the
+ # output directory.
+@@ -509,15 +513,6 @@
+ # ignore whole output directory
+ outputmakefile:
+ ifdef building_out_of_srctree
+-	$(Q)if [ -f $(srctree)/.config -o \
+-		 -d $(srctree)/include/config -o \
+-		 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
+-		echo >&2 "***"; \
+-		echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \
+-		echo >&2 "*** in $(abs_srctree)";\
+-		echo >&2 "***"; \
+-		false; \
+-	fi
+ 	$(Q)ln -fsn $(srctree) source
+ 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
+ 	$(Q)test -e .gitignore || \
+@@ -549,7 +544,7 @@
+ # and from include/config/auto.conf.cmd to detect the compiler upgrade.
+ CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1)
+ 
+-ifdef config-build
++ifeq ($(config-targets),1)
+ # ===========================================================================
+ # *config targets only - make sure prerequisites are updated, and descend
+ # in scripts/kconfig to make the *config target
+@@ -560,13 +555,13 @@
+ include arch/$(SRCARCH)/Makefile
+ export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT
+ 
+-config: outputmakefile scripts_basic FORCE
++config: scripts_basic outputmakefile FORCE
+ 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
+ 
+-%config: outputmakefile scripts_basic FORCE
++%config: scripts_basic outputmakefile FORCE
+ 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
+ 
+-else #!config-build
++else
+ # ===========================================================================
+ # Build targets only - this includes vmlinux, arch specific targets, clean
+ # targets and others. In general all targets except *config targets.
+@@ -599,7 +594,7 @@
+ # in addition to whatever we do anyway.
+ # Just "make" or "make all" shall build modules as well
+ 
+-ifneq ($(filter all _all modules nsdeps,$(MAKECMDGOALS)),)
++ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
+   KBUILD_MODULES := 1
+ endif
+ 
+@@ -609,7 +604,7 @@
+ 
+ export KBUILD_MODULES KBUILD_BUILTIN
+ 
+-ifdef need-config
++ifeq ($(dot-config),1)
+ include include/config/auto.conf
+ endif
+ 
+@@ -650,10 +645,15 @@
+ export RETPOLINE_CFLAGS
+ export RETPOLINE_VDSO_CFLAGS
+ 
++# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
++# values of the respective KBUILD_* variables
++ARCH_CPPFLAGS :=
++ARCH_AFLAGS :=
++ARCH_CFLAGS :=
+ include arch/$(SRCARCH)/Makefile
+ 
+-ifdef need-config
+-ifdef may-sync-config
++ifeq ($(dot-config),1)
++ifeq ($(may-sync-config),1)
+ # Read in dependencies to all Kconfig* files, make sure to run syncconfig if
+ # changes are detected. This should be included after arch/$(SRCARCH)/Makefile
+ # because some architectures define CROSS_COMPILE there.
+@@ -676,7 +676,7 @@
+ # The syncconfig should be executed only once to make all the targets.
+ %/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
+ 	$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
+-else # !may-sync-config
++else
+ # External modules and some install targets need include/generated/autoconf.h
+ # and include/config/auto.conf but do not care if they are up-to-date.
+ # Use auto.conf to trigger the test
+@@ -692,7 +692,7 @@
+ 	/bin/false)
+ 
+ endif # may-sync-config
+-endif # need-config
++endif # $(dot-config)
+ 
+ KBUILD_CFLAGS	+= $(call cc-option,-fno-delete-null-pointer-checks,)
+ KBUILD_CFLAGS	+= $(call cc-disable-warning,frame-address,)
+@@ -700,12 +700,10 @@
+ KBUILD_CFLAGS	+= $(call cc-disable-warning, format-overflow)
+ KBUILD_CFLAGS	+= $(call cc-disable-warning, address-of-packed-member)
+ 
+-ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
+-KBUILD_CFLAGS += -O2
+-else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
+-KBUILD_CFLAGS += -O3
+-else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+-KBUILD_CFLAGS += -Os
++ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
++KBUILD_CFLAGS	+= -Os
++else
++KBUILD_CFLAGS   += -O2
+ endif
+ 
+ ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED
+@@ -753,11 +751,6 @@
+ # These warnings generated too much noise in a regular build.
+ # Use make W=1 to enable them (see scripts/Makefile.extrawarn)
+ KBUILD_CFLAGS += -Wno-unused-but-set-variable
+-
+-# Warn about unmarked fall-throughs in switch statement.
+-# Disabled for clang while comment to attribute conversion happens and
+-# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed.
+-KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
+ endif
+ 
+ KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
+@@ -852,6 +845,9 @@
+ # warn about C99 declaration after statement
+ KBUILD_CFLAGS += -Wdeclaration-after-statement
+ 
++# Warn about unmarked fall-throughs in switch statement.
++KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
++
+ # Variable Length Arrays (VLAs) should not be used anywhere in the kernel
+ KBUILD_CFLAGS += -Wvla
+ 
+@@ -897,14 +893,18 @@
+ KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none)
+ endif
+ 
++# use the deterministic mode of AR if available
++KBUILD_ARFLAGS := $(call ar-option,D)
++
+ include scripts/Makefile.kasan
+ include scripts/Makefile.extrawarn
+ include scripts/Makefile.ubsan
+ 
+-# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
+-KBUILD_CPPFLAGS += $(KCPPFLAGS)
+-KBUILD_AFLAGS   += $(KAFLAGS)
+-KBUILD_CFLAGS   += $(KCFLAGS)
++# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
++# last assignments
++KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
++KBUILD_AFLAGS   += $(ARCH_AFLAGS)   $(KAFLAGS)
++KBUILD_CFLAGS   += $(ARCH_CFLAGS)   $(KCFLAGS)
+ 
+ KBUILD_LDFLAGS_MODULE += --build-id
+ LDFLAGS_vmlinux += --build-id
+@@ -913,13 +913,6 @@
+ LDFLAGS_vmlinux	+= $(call ld-option, -X,)
+ endif
+ 
+-ifeq ($(CONFIG_RELR),y)
+-LDFLAGS_vmlinux	+= --pack-dyn-relocs=relr
+-endif
+-
+-# make the checker run with the right architecture
+-CHECKFLAGS += --arch=$(ARCH)
+-
+ # insure the checker run with the right endianness
+ CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
+ 
+@@ -1010,7 +1003,7 @@
+ 
+ PHONY += prepare0
+ 
+-export MODORDER := $(extmod-prefix)modules.order
++export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
+ 
+ ifeq ($(KBUILD_EXTMOD),)
+ core-y		+= kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
+@@ -1023,9 +1016,6 @@
+ 		     $(patsubst %/,%,$(filter %/, $(init-) $(core-) \
+ 			$(drivers-) $(net-) $(libs-) $(virt-))))
+ 
+-build-dirs	:= $(vmlinux-dirs)
+-clean-dirs	:= $(vmlinux-alldirs)
+-
+ init-y		:= $(patsubst %/, %/built-in.a, $(init-y))
+ core-y		:= $(patsubst %/, %/built-in.a, $(core-y))
+ drivers-y	:= $(patsubst %/, %/built-in.a, $(drivers-y))
+@@ -1040,7 +1030,7 @@
+ export KBUILD_VMLINUX_LIBS := $(libs-y1)
+ export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds
+ export LDFLAGS_vmlinux
+-# used by scripts/Makefile.package
++# used by scripts/package/Makefile
+ export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools)
+ 
+ vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
+@@ -1048,7 +1038,7 @@
+ # Recurse until adjust_autoksyms.sh is satisfied
+ PHONY += autoksyms_recursive
+ ifdef CONFIG_TRIM_UNUSED_KSYMS
+-autoksyms_recursive: descend modules.order
++autoksyms_recursive: $(vmlinux-deps) modules.order
+ 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
+ 	  "$(MAKE) -f $(srctree)/Makefile vmlinux"
+ endif
+@@ -1080,7 +1070,17 @@
+ 
+ # The actual objects are generated when descending,
+ # make sure no implicit rule kicks in
+-$(sort $(vmlinux-deps)): descend ;
++$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
++
++# Handle descending into subdirectories listed in $(vmlinux-dirs)
++# Preset locale variables to speed up the build process. Limit locale
++# tweaks to this spot to avoid wrong language settings when running
++# make menuconfig etc.
++# Error messages still appears in the original language
++
++PHONY += $(vmlinux-dirs)
++$(vmlinux-dirs): prepare
++	$(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1
+ 
+ filechk_kernel.release = \
+ 	echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
+@@ -1102,9 +1102,24 @@
+ # archprepare is used in arch Makefiles and when processed asm symlink,
+ # version.h and scripts_basic is processed / created.
+ 
+-PHONY += prepare archprepare
++PHONY += prepare archprepare prepare3
+ 
+-archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
++# prepare3 is used to check if we are building in a separate output directory,
++# and if so do:
++# 1) Check that make has not been executed in the kernel src $(srctree)
++prepare3: include/config/kernel.release
++ifdef building_out_of_srctree
++	@$(kecho) '  Using $(srctree) as source for kernel'
++	$(Q)if [ -f $(srctree)/.config -o \
++		 -d $(srctree)/include/config -o \
++		 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
++		echo >&2 "  $(srctree) is not clean, please run 'make ARCH=$(ARCH) mrproper'"; \
++		echo >&2 "  in the '$(srctree)' directory.";\
++		/bin/false; \
++	fi;
++endif
++
++archprepare: archheaders archscripts scripts prepare3 outputmakefile \
+ 	asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h
+ 
+ prepare0: archprepare
+@@ -1220,15 +1235,16 @@
+ kselftest:
+ 	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
+ 
+-kselftest-%: FORCE
+-	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $*
++PHONY += kselftest-clean
++kselftest-clean:
++	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean
+ 
+ PHONY += kselftest-merge
+ kselftest-merge:
+ 	$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
+ 	$(Q)find $(srctree)/tools/testing/selftests -name config | \
+ 		xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config
+-	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
++	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
+ 
+ # ---------------------------------------------------------------------------
+ # Devicetree files
+@@ -1239,11 +1255,11 @@
+ 
+ ifneq ($(dtstree),)
+ 
+-%.dtb: include/config/kernel.release scripts_dtc
++%.dtb: prepare3 scripts_dtc
+ 	$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+ 
+ PHONY += dtbs dtbs_install dt_binding_check
+-dtbs dtbs_check: include/config/kernel.release scripts_dtc
++dtbs dtbs_check: prepare3 scripts_dtc
+ 	$(Q)$(MAKE) $(build)=$(dtstree)
+ 
+ dtbs_check: export CHECK_DTBS=1
+@@ -1282,16 +1298,17 @@
+ 
+ PHONY += modules
+ modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules.builtin
++	@$(kecho) '  Building modules, stage 2.';
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh
+ 
+-modules.order: descend
+-	$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@
++modules.order: $(vmlinux-dirs)
++	$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@
+ 
+-modbuiltin-dirs := $(addprefix _modbuiltin_, $(build-dirs))
++modbuiltin-dirs := $(addprefix _modbuiltin_, $(vmlinux-dirs))
+ 
+ modules.builtin: $(modbuiltin-dirs)
+-	$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@
++	$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@
+ 
+ PHONY += $(modbuiltin-dirs)
+ # tristate.conf is not included from this Makefile. Add it as a prerequisite
+@@ -1364,14 +1381,12 @@
+ 
+ # Directories & files removed with 'make mrproper'
+ MRPROPER_DIRS  += include/config include/generated          \
+-		  arch/$(SRCARCH)/include/generated .tmp_objdiff \
+-		  debian/ snap/ tar-install/
++		  arch/$(SRCARCH)/include/generated .tmp_objdiff
+ MRPROPER_FILES += .config .config.old .version \
+ 		  Module.symvers \
+ 		  signing_key.pem signing_key.priv signing_key.x509	\
+ 		  x509.genkey extra_certificates signing_key.x509.keyid	\
+-		  signing_key.x509.signer vmlinux-gdb.py \
+-		  *.spec
++		  signing_key.x509.signer vmlinux-gdb.py
+ 
+ # Directories & files removed with 'make distclean'
+ DISTCLEAN_DIRS  +=
+@@ -1381,8 +1396,11 @@
+ #
+ clean: rm-dirs  := $(CLEAN_DIRS)
+ clean: rm-files := $(CLEAN_FILES)
++clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs))
+ 
+-PHONY += archclean vmlinuxclean
++PHONY += $(clean-dirs) clean archclean vmlinuxclean
++$(clean-dirs):
++	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+ 
+ vmlinuxclean:
+ 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
+@@ -1423,11 +1441,13 @@
+ 
+ # Packaging of the kernel to various formats
+ # ---------------------------------------------------------------------------
++package-dir	:= scripts/package
+ 
+ %src-pkg: FORCE
+-	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
++	$(Q)$(MAKE) $(build)=$(package-dir) $@
+ %pkg: include/config/kernel.release FORCE
+-	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
++	$(Q)$(MAKE) $(build)=$(package-dir) $@
++
+ 
+ # Brief documentation of the typical targets used
+ # ---------------------------------------------------------------------------
+@@ -1480,9 +1500,6 @@
+ 	@echo  '  headerdep       - Detect inclusion cycles in headers'
+ 	@echo  '  coccicheck      - Check with Coccinelle'
+ 	@echo  ''
+-	@echo  'Tools:'
+-	@echo  '  nsdeps          - Generate missing symbol namespace dependencies'
+-	@echo  ''
+ 	@echo  'Kernel selftest:'
+ 	@echo  '  kselftest       - Build and run kernel selftest (run as root)'
+ 	@echo  '                    Build, install, and boot kernel before'
+@@ -1493,10 +1510,8 @@
+ 	@echo  ''
+ 	@$(if $(dtstree), \
+ 		echo 'Devicetree:'; \
+-		echo '* dtbs             - Build device tree blobs for enabled boards'; \
+-		echo '  dtbs_install     - Install dtbs to $(INSTALL_DTBS_PATH)'; \
+-		echo '  dt_binding_check - Validate device tree binding documents'; \
+-		echo '  dtbs_check       - Validate device tree source files';\
++		echo '* dtbs            - Build device tree blobs for enabled boards'; \
++		echo '  dtbs_install    - Install dtbs to $(INSTALL_DTBS_PATH)'; \
+ 		echo '')
+ 
+ 	@echo 'Userspace tools targets:'
+@@ -1504,7 +1519,7 @@
+ 	@echo '  or  "cd tools; make help"'
+ 	@echo  ''
+ 	@echo  'Kernel packaging:'
+-	@$(MAKE) -f $(srctree)/scripts/Makefile.package help
++	@$(MAKE) $(build)=$(package-dir) help
+ 	@echo  ''
+ 	@echo  'Documentation targets:'
+ 	@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
+@@ -1529,7 +1544,7 @@
+ 	@echo  '  make C=1   [targets] Check re-compiled c source with $$CHECK (sparse by default)'
+ 	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
+ 	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
+-	@echo  '  make W=n   [targets] Enable extra build checks, n=1,2,3 where'
++	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
+ 	@echo  '		1: warnings which may be relevant and do not occur too often'
+ 	@echo  '		2: warnings which occur quite often but may still be relevant'
+ 	@echo  '		3: more obscure warnings, can most likely be ignored'
+@@ -1558,7 +1573,7 @@
+ DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
+ 	       linkcheckdocs dochelp refcheckdocs
+ PHONY += $(DOC_TARGETS)
+-$(DOC_TARGETS):
++$(DOC_TARGETS): scripts_basic FORCE
+ 	$(Q)$(MAKE) $(build)=Documentation $@
+ 
+ # Misc
+@@ -1603,9 +1618,13 @@
+ 	echo "           is missing; modules will have no dependencies and modversions."; \
+ 	echo )
+ 
+-build-dirs := $(KBUILD_EXTMOD)
+-PHONY += modules
+-modules: descend $(objtree)/Module.symvers
++module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
++PHONY += $(module-dirs) modules
++$(module-dirs): prepare $(objtree)/Module.symvers
++	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) need-modorder=1
++
++modules: $(module-dirs)
++	@$(kecho) '  Building modules, stage 2.';
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ 
+ PHONY += modules_install
+@@ -1621,12 +1640,13 @@
+ _emodinst_post: _emodinst_
+ 	$(call cmd,depmod)
+ 
+-clean-dirs := $(KBUILD_EXTMOD)
+-clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
++clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
+ 
+-PHONY += /
+-/:
+-	@echo >&2 '"$(MAKE) /" is no longer supported. Please use "$(MAKE) ./" instead.'
++PHONY += $(clean-dirs) clean
++$(clean-dirs):
++	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
++
++clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
+ 
+ PHONY += help
+ help:
+@@ -1641,21 +1661,6 @@
+ PHONY += prepare
+ endif # KBUILD_EXTMOD
+ 
+-# Handle descending into subdirectories listed in $(build-dirs)
+-# Preset locale variables to speed up the build process. Limit locale
+-# tweaks to this spot to avoid wrong language settings when running
+-# make menuconfig etc.
+-# Error messages still appears in the original language
+-PHONY += descend $(build-dirs)
+-descend: $(build-dirs)
+-$(build-dirs): prepare
+-	$(Q)$(MAKE) $(build)=$@ single-build=$(single-build) need-builtin=1 need-modorder=1
+-
+-clean-dirs := $(addprefix _clean_, $(clean-dirs))
+-PHONY += $(clean-dirs) clean
+-$(clean-dirs):
+-	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+-
+ clean: $(clean-dirs)
+ 	$(call cmd,rmdirs)
+ 	$(call cmd,rmfiles)
+@@ -1664,7 +1669,7 @@
+ 		-o -name '*.ko.*' \
+ 		-o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
+ 		-o -name '*.dwo' -o -name '*.lst' \
+-		-o -name '*.su' -o -name '*.mod' -o -name '*.ns_deps' \
++		-o -name '*.su' -o -name '*.mod' \
+ 		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
+ 		-o -name '*.lex.c' -o -name '*.tab.[ch]' \
+ 		-o -name '*.asn1.[ch]' \
+@@ -1677,20 +1682,11 @@
+ # Generate tags for editors
+ # ---------------------------------------------------------------------------
+ quiet_cmd_tags = GEN     $@
+-      cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@
++      cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
+ 
+ tags TAGS cscope gtags: FORCE
+ 	$(call cmd,tags)
+ 
+-# Script to generate missing namespace dependencies
+-# ---------------------------------------------------------------------------
+-
+-PHONY += nsdeps
+-
+-nsdeps: modules
+-	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost nsdeps
+-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
+-
+ # Scripts to check various things for consistency
+ # ---------------------------------------------------------------------------
+ 
+@@ -1707,7 +1703,7 @@
+ 		| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
+ 
+ coccicheck:
+-	$(Q)$(BASH) $(srctree)/scripts/$@
++	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
+ 
+ namespacecheck:
+ 	$(PERL) $(srctree)/scripts/namespace.pl
+@@ -1755,47 +1751,45 @@
+ 
+ # Single targets
+ # ---------------------------------------------------------------------------
+-# To build individual files in subdirectories, you can do like this:
+-#
+-#   make foo/bar/baz.s
+-#
+-# The supported suffixes for single-target are listed in 'single-targets'
+-#
+-# To build only under specific subdirectories, you can do like this:
+-#
+-#   make foo/bar/baz/
+-
+-ifdef single-build
+-
+-single-all := $(filter $(single-targets), $(MAKECMDGOALS))
+-
+-# .ko is special because modpost is needed
+-single-ko := $(sort $(filter %.ko, $(single-all)))
+-single-no-ko := $(sort $(patsubst %.ko,%.mod, $(single-all)))
+-
+-$(single-ko): single_modpost
+-	@:
+-$(single-no-ko): descend
+-	@:
+-
++# Single targets are compatible with:
++# - build with mixed source and output
++# - build with separate output dir 'make O=...'
++# - external modules
++#
++#  target-dir => where to store outputfile
++#  build-dir  => directory in kernel source tree to use
++
++build-target = $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD)/)$@
++build-dir = $(patsubst %/,%,$(dir $(build-target)))
++
++%.i: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
++%.ll: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
++%.lst: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
++%.o: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
++%.s: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
++%.symtypes: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+ ifeq ($(KBUILD_EXTMOD),)
+-# For the single build of in-tree modules, use a temporary file to avoid
++# For the single build of an in-tree module, use a temporary file to avoid
+ # the situation of modules_install installing an invalid modules.order.
+-MODORDER := .modules.tmp
++%.ko: MODORDER := .modules.tmp
+ endif
+-
+-PHONY += single_modpost
+-single_modpost: $(single-no-ko)
+-	$(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER)
++%.ko: prepare FORCE
++	$(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod)
++	$(Q)echo $(build-target) > $(MODORDER)
+ 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ 
+-KBUILD_MODULES := 1
+-
+-export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko))
++# Modules
++PHONY += /
++/: ./
+ 
+-single-build = $(if $(filter-out $@/, $(single-no-ko)),1)
+-
+-endif
++%/: prepare FORCE
++	$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1
+ 
+ # FIXME Should go into a make.lib or something
+ # ===========================================================================
+@@ -1816,9 +1810,9 @@
+ 
+ -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+ 
+-endif # config-targets
+-endif # mixed-build
+-endif # need-sub-make
++endif   # ifeq ($(config-targets),1)
++endif   # ifeq ($(mixed-targets),1)
++endif   # need-sub-make
+ 
+ PHONY += FORCE
+ FORCE:
diff --git a/kernel/kernel/files/scripts/generate-module-list b/kernel/kernel/files/scripts/generate-module-list
old mode 100644
new mode 100755
diff --git a/kernel/kernel/pspec.xml b/kernel/kernel/pspec.xml
index 0f5aa24d..fe719656 100644
--- a/kernel/kernel/pspec.xml
+++ b/kernel/kernel/pspec.xml
@@ -12,7 +12,7 @@
         <IsA>kernel</IsA>
         <Summary>The Linux kernel (the core of the Linux operating system) for Pisi Linux</Summary>
         <Description>kernel contains the Linux kernel, the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc.</Description>
-        <Archive sha1sum="eb09a8e0483a9ec40bdb767551d0eda27f7c221a" type="targz">https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.19.tar.gz</Archive>
+        <Archive sha1sum="8fd0449a462c77f3e5b35848f4bf3c41411702d6" type="targz">https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/linux-5.4.tar.gz</Archive>
         <AdditionalFiles>
             <AdditionalFile target="configs/kernel-i686-config">configs/kernel-i686-config</AdditionalFile>
             <AdditionalFile target="configs/kernel-x86_64-config">configs/kernel-x86_64-config</AdditionalFile>
@@ -29,16 +29,20 @@
             <Dependency>zlib-devel</Dependency>
             <Dependency>xz-devel</Dependency>
             <Dependency>openssl-devel</Dependency>
+			<Dependency>rsync</Dependency>
         </BuildDependencies>
         <Patches>
             <!-- Linux patches -->
-            <Patch level="1" compressionType="xz">patches/linux/patch-4.19.56.xz</Patch>
-            <!-- Mageia Linux patches // compatible with http://svnweb.mageia.org/packages/cauldron/kernel/releases/4.14.44/2.mga7/PATCHES/patches/series-->
-            <!--stable patches-->
-            <!--CVE-2016-8405-->
-            <!--other patches-->
-            <Patch level="1">patches/mageia_4_19/fs-aufs-4.19.patch</Patch>
-            <Patch level="1">patches/mageia_4_19/fs-aufs-4.19-modular.patch</Patch>
+            <Patch level="1" compressionType="xz">patches/linux/patch-5.4.6.xz</Patch>
+            <!-- Mageia Linux patches-->
+			<Patch level="1">patches/mageia/fs-aufs-5.4.patch</Patch>
+			<Patch level="1">patches/mageia/fs-aufs-5.4-modular.patch</Patch>
+			<Patch level="1">patches/mageia/fs-vboxsf.patch</Patch>
+			<Patch level="1">patches/mageia/CVE-2019-12379.patch</Patch>
+<!-- 			<Patch level="1">patches/mageia/disable-mrproper-in-devel-rpms.patch</Patch> -->
+			
+			<!-- Build fix -->
+			<Patch level="1">patches/pisilinux/revert-Makefile.patch</Patch>
         </Patches>
     </Source>
 
@@ -94,6 +98,17 @@
     </Package>
 
     <History>
+		<Update release="28">
+            <Date>2019-12-27</Date>
+            <Version>5.4.6</Version>
+            <Comment>Version Bump.</Comment>
+            <Type package="kernel">security</Type>
+            <Requires>
+                <Action package="kernel">systemRestart</Action>
+            </Requires>
+            <Name>Idris Kalp</Name>
+            <Email>idriskalp@gmail.com</Email>
+        </Update>
         <Update release="27">
             <Date>2019-06-25</Date>
             <Version>4.19.56</Version>