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kernel-6.12.58

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This commit is contained in:
Rmys
2025-11-14 14:07:20 +03:00
parent 561af621fd
commit 253de26f25
91 changed files with 155064 additions and 127114 deletions
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kernel/tools/perf/files/patches/aufs6/aufs6-base.patch
+220
View File
@@ -0,0 +1,220 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 base patch
diff --git a/MAINTAINERS b/MAINTAINERS
index b878ddc99f94e..8489754030b99 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3666,6 +3666,19 @@ F: kernel/audit*
F: lib/*audit.c
K: \baudit_[a-z_0-9]\+\b
+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
+S: Supported
+W: http://aufs.sourceforge.net
+T: git://github.com/sfjro/aufs4-linux.git
+F: Documentation/ABI/testing/debugfs-aufs
+F: Documentation/ABI/testing/sysfs-aufs
+F: Documentation/filesystems/aufs/
+F: fs/aufs/
+F: include/uapi/linux/aufs_type.h
+
AUXILIARY BUS DRIVER
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
R: Dave Ertman <david.m.ertman@intel.com>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 78a7bb28defe4..479480f25a6c0 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -661,6 +661,26 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
goto done;
}
+/*
+ * for AUFS
+ * no get/put for file.
+ */
+/* Just to make the compiler silence, declare it */
+struct file *loop_backing_file(struct super_block *sb);
+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 --git a/fs/dcache.c b/fs/dcache.c
index 0f6b16ba30d08..1ab11cad60e8c 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1223,6 +1223,9 @@ enum d_walk_ret {
D_WALK_SKIP,
};
+/* AUFS calls d_walk(). Just to make the compiler silence, declare it */
+void d_walk(struct dentry *parent, void *data,
+ enum d_walk_ret (*enter)(void *, struct dentry *));
/**
* d_walk - walk the dentry tree
* @parent: start of walk
@@ -1231,7 +1234,7 @@ 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, *dentry;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 22dd9dcce7ecc..460791727fd9c 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -37,7 +37,7 @@
#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
-static int setfl(int fd, struct file * filp, unsigned int arg)
+int setfl(int fd, struct file * filp, unsigned int arg)
{
struct inode * inode = file_inode(filp);
int error = 0;
@@ -67,6 +67,8 @@ static int setfl(int fd, struct file * filp, unsigned int arg)
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 --git a/fs/namespace.c b/fs/namespace.c
index d26f5e6d2ca35..85739e2d64c00 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -966,6 +966,12 @@ static inline int check_mnt(struct mount *mnt)
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 --git a/fs/splice.c b/fs/splice.c
index 06232d7e505f6..b15fd6073b6d3 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -933,7 +933,7 @@ static int warn_unsupported(struct file *file, const char *op)
/*
* Attempt to initiate a splice from pipe to file.
*/
-static ssize_t do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ssize_t do_splice_from(struct pipe_inode_info *pipe, struct file *out,
loff_t *ppos, size_t len, unsigned int flags)
{
if (unlikely(!out->f_op->splice_write))
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3559446279c15..51b64b2ad82c4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1160,6 +1160,7 @@ extern void fasync_free(struct fasync_struct *);
/* can be called from interrupts */
extern void kill_fasync(struct fasync_struct **, int, int);
+extern int setfl(int fd, struct file *filp, unsigned int arg);
extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
extern int f_setown(struct file *filp, int who, int force);
extern void f_delown(struct file *filp);
@@ -2082,6 +2083,7 @@ struct file_operations {
int (*lock) (struct file *, int, struct file_lock *);
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);
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 217f7abf2cbfa..0e17b8c23f105 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -210,6 +210,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock,
return lock->key == key;
}
+struct lock_class *lockdep_hlock_class(struct held_lock *hlock);
+
/*
* Acquire a lock.
*
diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
index 70b366b648160..08cfdabb2721f 100644
--- a/include/linux/mnt_namespace.h
+++ b/include/linux/mnt_namespace.h
@@ -10,6 +10,7 @@ struct mnt_namespace;
struct fs_struct;
struct user_namespace;
struct ns_common;
+struct vfsmount;
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
struct user_namespace *, struct fs_struct *);
@@ -17,6 +18,8 @@ extern void put_mnt_ns(struct mnt_namespace *ns);
DEFINE_FREE(put_mnt_ns, struct mnt_namespace *, if (!IS_ERR_OR_NULL(_T)) put_mnt_ns(_T))
extern struct ns_common *from_mnt_ns(struct mnt_namespace *);
+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 --git a/include/linux/splice.h b/include/linux/splice.h
index 9dec4861d09f6..14583d8468640 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -108,4 +108,7 @@ extern void splice_shrink_spd(struct splice_pipe_desc *);
extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
extern const struct pipe_buf_operations default_pipe_buf_ops;
+
+extern ssize_t do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags);
#endif
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 536bd471557f5..34b378cf7a95f 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -218,7 +218,7 @@ unsigned long max_lock_class_idx;
struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
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;
@@ -239,6 +239,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock)
*/
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);
kernel/tools/perf/files/patches/aufs6/aufs6-kbuild.patch
+24
View File
@@ -0,0 +1,24 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 kbuild patch
diff --git a/fs/Kconfig b/fs/Kconfig
index aae170fc27952..d5bb584649f50 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -341,6 +341,7 @@ source "fs/sysv/Kconfig"
source "fs/ufs/Kconfig"
source "fs/erofs/Kconfig"
source "fs/vboxsf/Kconfig"
+source "fs/aufs/Kconfig"
endif # MISC_FILESYSTEMS
diff --git a/fs/Makefile b/fs/Makefile
index 61679fd587b7e..b2539712b80d0 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -130,3 +130,4 @@ obj-$(CONFIG_EROFS_FS) += erofs/
obj-$(CONFIG_VBOXSF_FS) += vboxsf/
obj-$(CONFIG_ZONEFS_FS) += zonefs/
obj-$(CONFIG_BPF_LSM) += bpf_fs_kfuncs.o
+obj-$(CONFIG_AUFS_FS) += aufs/
kernel/tools/perf/files/patches/aufs6/aufs6-loopback.patch
+239
View File
@@ -0,0 +1,239 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 loopback patch
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 479480f25a6c0..ba3477c30e294 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -54,7 +54,7 @@ struct loop_device {
int lo_flags;
char lo_file_name[LO_NAME_SIZE];
- struct file * lo_backing_file;
+ struct file *lo_backing_file, *lo_backing_virt_file;
struct block_device *lo_device;
gfp_t old_gfp_mask;
@@ -526,6 +526,15 @@ static inline void loop_update_dio(struct loop_device *lo)
lo->use_dio);
}
+static struct file *loop_real_file(struct file *file)
+{
+ struct file *f = NULL;
+
+ if (file->f_path.dentry->d_sb->s_op->real_loop)
+ f = file->f_path.dentry->d_sb->s_op->real_loop(file);
+ return f;
+}
+
static void loop_reread_partitions(struct loop_device *lo)
{
int rc;
@@ -583,6 +592,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
{
struct file *file = fget(arg);
struct file *old_file;
+ struct file *f, *virt_file = NULL, *old_virt_file;
int error;
bool partscan;
bool is_loop;
@@ -606,11 +616,19 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
if (!(lo->lo_flags & LO_FLAGS_READ_ONLY))
goto out_err;
+ f = loop_real_file(file);
+ if (f) {
+ virt_file = file;
+ file = f;
+ get_file(file);
+ }
+
error = loop_validate_file(file, bdev);
if (error)
goto out_err;
old_file = lo->lo_backing_file;
+ old_virt_file = lo->lo_backing_virt_file;
error = -EINVAL;
@@ -623,6 +641,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
blk_mq_freeze_queue(lo->lo_queue);
mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask);
lo->lo_backing_file = file;
+ lo->lo_backing_virt_file = virt_file;
lo->old_gfp_mask = mapping_gfp_mask(file->f_mapping);
mapping_set_gfp_mask(file->f_mapping,
lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
@@ -645,6 +664,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
* dependency.
*/
fput(old_file);
+ if (old_virt_file)
+ fput(old_virt_file);
if (partscan)
loop_reread_partitions(lo);
@@ -658,6 +679,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
loop_global_unlock(lo, is_loop);
out_putf:
fput(file);
+ if (virt_file)
+ fput(virt_file);
goto done;
}
@@ -1039,6 +1062,7 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
const struct loop_config *config)
{
struct file *file = fget(config->fd);
+ struct file *f, *virt_file = NULL;
struct address_space *mapping;
int error;
loff_t size;
@@ -1052,6 +1076,13 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
/* This is safe, since we have a reference from open(). */
__module_get(THIS_MODULE);
+ f = loop_real_file(file);
+ if (f) {
+ virt_file = file;
+ file = f;
+ get_file(file);
+ }
+
/*
* If we don't hold exclusive handle for the device, upgrade to it
* here to avoid changing device under exclusive owner.
@@ -1108,6 +1139,7 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO;
lo->lo_device = bdev;
lo->lo_backing_file = file;
+ lo->lo_backing_virt_file = virt_file;
lo->old_gfp_mask = mapping_gfp_mask(mapping);
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
@@ -1150,6 +1182,8 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
bd_abort_claiming(bdev, loop_configure);
out_putf:
fput(file);
+ if (virt_file)
+ fput(virt_file);
/* This is safe: open() is still holding a reference. */
module_put(THIS_MODULE);
return error;
@@ -1159,11 +1193,13 @@ static void __loop_clr_fd(struct loop_device *lo)
{
struct queue_limits lim;
struct file *filp;
+ struct file *virt_filp = lo->lo_backing_virt_file;
gfp_t gfp = lo->old_gfp_mask;
spin_lock_irq(&lo->lo_lock);
filp = lo->lo_backing_file;
lo->lo_backing_file = NULL;
+ lo->lo_backing_virt_file = NULL;
spin_unlock_irq(&lo->lo_lock);
lo->lo_device = NULL;
@@ -1225,6 +1261,8 @@ static void __loop_clr_fd(struct loop_device *lo)
* fput can take open_mutex which is usually taken before lo_mutex.
*/
fput(filp);
+ if (virt_filp)
+ fput(virt_filp);
}
static int loop_clr_fd(struct loop_device *lo)
diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c
index db7e9fcf1056a..6d202136d29af 100644
--- a/fs/aufs/f_op.c
+++ b/fs/aufs/f_op.c
@@ -317,7 +317,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
if (IS_ERR(h_file))
goto out;
- if (au_test_loopback_kthread()) {
+ if (0 && 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;
diff --git a/fs/aufs/loop.c b/fs/aufs/loop.c
index 69dea4cda00c0..92a74affb2208 100644
--- a/fs/aufs/loop.c
+++ b/fs/aufs/loop.c
@@ -133,3 +133,19 @@ void au_loopback_fin(void)
symbol_put(loop_backing_file);
au_kfree_try_rcu(au_warn_loopback_array);
}
+
+/* ---------------------------------------------------------------------- */
+
+/* support the loopback block device insude aufs */
+
+struct file *aufs_real_loop(struct file *file)
+{
+ struct file *f;
+
+ BUG_ON(!au_test_aufs(file->f_path.dentry->d_sb));
+ fi_read_lock(file);
+ f = au_hf_top(file);
+ fi_read_unlock(file);
+ AuDebugOn(!f);
+ return f;
+}
diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h
index 519efba31c700..ac701381da792 100644
--- a/fs/aufs/loop.h
+++ b/fs/aufs/loop.h
@@ -26,6 +26,8 @@ void au_warn_loopback(struct super_block *h_sb);
int au_loopback_init(void);
void au_loopback_fin(void);
+
+struct file *aufs_real_loop(struct file *file);
#else
AuStub(struct file *, loop_backing_file, return NULL, struct super_block *sb)
@@ -36,6 +38,8 @@ AuStubVoid(au_warn_loopback, struct super_block *h_sb)
AuStubInt0(au_loopback_init, void)
AuStubVoid(au_loopback_fin, void)
+
+AuStub(struct file *, aufs_real_loop, return NULL, struct file *file)
#endif /* BLK_DEV_LOOP */
#endif /* __KERNEL__ */
diff --git a/fs/aufs/super.c b/fs/aufs/super.c
index 9c30cba527421..8161108d0f6d5 100644
--- a/fs/aufs/super.c
+++ b/fs/aufs/super.c
@@ -758,7 +758,10 @@ const struct super_operations aufs_sop = {
.show_options = aufs_show_options,
.statfs = aufs_statfs,
.put_super = aufs_put_super,
- .sync_fs = aufs_sync_fs
+ .sync_fs = aufs_sync_fs,
+#ifdef CONFIG_AUFS_BDEV_LOOP
+ .real_loop = aufs_real_loop
+#endif
};
/* ---------------------------------------------------------------------- */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 51b64b2ad82c4..8c3ff295b020b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2248,6 +2248,11 @@ struct super_operations {
long (*free_cached_objects)(struct super_block *,
struct shrink_control *);
void (*shutdown)(struct super_block *sb);
+
+#if IS_ENABLED(CONFIG_BLK_DEV_LOOP) || IS_ENABLED(CONFIG_BLK_DEV_LOOP_MODULE)
+ /* and aufs */
+ struct file *(*real_loop)(struct file *);
+#endif
};
/*
kernel/tools/perf/files/patches/aufs6/aufs6-mmap.patch
+452
View File
@@ -0,0 +1,452 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 mmap patch
diff --git a/fs/proc/base.c b/fs/proc/base.c
index b31283d81c52e..644bd3d84cf76 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2270,7 +2270,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
rc = -ENOENT;
vma = find_exact_vma(mm, vm_start, vm_end);
if (vma && vma->vm_file) {
- *path = *file_user_path(vma->vm_file);
+ *path = vma_pr_or_file(vma)->f_path;
path_get(path);
rc = 0;
}
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index c6e7ebc637562..d7ccfd9097646 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -39,7 +39,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
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 --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 7eb010de39fe2..0c576103f7f15 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -264,7 +264,8 @@ static void get_vma_name(struct vm_area_struct *vma,
*name_fmt = "[anon_shmem:%s]";
*name = anon_name->name;
} else {
- *path = file_user_path(vma->vm_file);
+ struct file *f = vma_pr_or_file(vma);
+ *path = file_user_path(f);
}
return;
}
@@ -333,7 +334,8 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
dev_t dev = 0;
if (vma->vm_file) {
- const struct inode *inode = file_user_inode(vma->vm_file);
+ const struct inode *inode
+ = file_inode(vma_pr_or_file(vma));
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
@@ -3008,7 +3010,7 @@ static int show_numa_map(struct seq_file *m, void *v)
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;
char buffer[64];
struct mempolicy *pol;
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index bce6745330003..b12b5a75c799c 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -137,7 +137,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
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 --git a/include/linux/mm.h b/include/linux/mm.h
index 61fff5d34ed53..94b66987b4bb0 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2469,6 +2469,43 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
static inline struct vm_area_struct *vma_lookup(struct mm_struct *mm,
unsigned long addr);
+#if 1 /* IS_ENABLED(CONFIG_AUFS_FS) */
+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 */
+
+#else
+
+#define vma_file_update_time(vma) file_update_time((vma)->vm_file)
+#define vma_pr_or_file(vma) (vma)->vm_file
+#define vma_get_file(vma) get_file((vma)->vm_file)
+#define vma_fput(vma) fput((vma)->vm_file)
+
+#ifndef CONFIG_MMU
+#define vmr_pr_or_file(region) (region)->vm_file
+#define vmr_fput(region) fput((region)->vm_file)
+#endif /* !CONFIG_MMU */
+
+#endif /* CONFIG_AUFS_FS */
+
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 --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 6e3bdf8e38bca..c70247dc71022 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -572,6 +572,9 @@ 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 */
+#if 1 /* IS_ENABLED(CONFIG_AUFS_FS) */
+ struct file *vm_prfile; /* the virtual backing file or NULL */
+#endif
int vm_usage; /* region usage count (access under nommu_region_sem) */
bool vm_icache_flushed : 1; /* true if the icache has been flushed for
@@ -747,6 +750,9 @@ 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). */
+#if 1 /* IS_ENABLED(CONFIG_AUFS_FS) */
+ struct file *vm_prfile; /* shadow of vm_file */
+#endif
void * vm_private_data; /* was vm_pte (shared mem) */
#ifdef CONFIG_ANON_VMA_NAME
diff --git a/kernel/fork.c b/kernel/fork.c
index 22f43721d031d..03abd72b3353d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -730,7 +730,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
if (file) {
struct address_space *mapping = file->f_mapping;
- get_file(file);
+ vma_get_file(tmp);
i_mmap_lock_write(mapping);
if (vma_is_shared_maywrite(tmp))
mapping_allow_writable(mapping);
diff --git a/mm/Makefile b/mm/Makefile
index d5639b0361663..bb57f616f0325 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -145,3 +145,4 @@ obj-$(CONFIG_GENERIC_IOREMAP) += ioremap.o
obj-$(CONFIG_SHRINKER_DEBUG) += shrinker_debug.o
obj-$(CONFIG_EXECMEM) += execmem.o
obj-$(CONFIG_TMPFS_QUOTA) += shmem_quota.o
+obj-y += prfile.o
diff --git a/mm/filemap.c b/mm/filemap.c
index 56fa431c52af7..d55fe4e7bcfd1 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3707,7 +3707,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)
vm_fault_t ret = VM_FAULT_LOCKED;
sb_start_pagefault(mapping->host->i_sb);
- file_update_time(vmf->vma->vm_file);
+ vma_file_update_time(vmf->vma);
folio_lock(folio);
if (folio->mapping != mapping) {
folio_unlock(folio);
diff --git a/mm/mmap.c b/mm/mmap.c
index 79d541f1502b2..2dc64f6dc0181 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1484,7 +1484,7 @@ static unsigned long __mmap_region(struct file *file, unsigned long addr,
* and cause general protection fault
* ultimately.
*/
- fput(vma->vm_file);
+ vma_fput(vma);
vm_area_free(vma);
vma = merge;
/* Update vm_flags to pick up the change. */
@@ -1654,6 +1654,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
unsigned long ret = -EINVAL;
struct file *file;
vm_flags_t vm_flags;
+ struct file *prfile = NULL; /* aufs */
pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst.\n",
current->comm, current->pid);
@@ -1696,14 +1697,18 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
/* Save vm_flags used to calculate prot and flags, and recheck later. */
vm_flags = vma->vm_flags;
- file = get_file(vma->vm_file);
+ vma_get_file(vma);
+ file = vma->vm_file;
+#if 1 /* IS_ENABLED(CONFIG_AUFS_FS) */
+ prfile = vma->vm_prfile;
+#endif
mmap_read_unlock(mm);
/* Call outside mmap_lock to be consistent with other callers. */
ret = security_mmap_file(file, prot, flags);
if (ret) {
- fput(file);
+ vma_fput(vma);
return ret;
}
@@ -1711,7 +1716,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
/* OK security check passed, take write lock + let it rip. */
if (mmap_write_lock_killable(mm)) {
- fput(file);
+ vma_fput(vma);
return -EINTR;
}
@@ -1753,9 +1758,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
ret = do_mmap(vma->vm_file, start, size,
prot, flags, 0, pgoff, &populate, NULL);
+#if 1 /* IS_ENABLED(CONFIG_AUFS_FS) */
+ 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 (prfile)
+ get_file(prfile);
+ }
+#endif
+
out:
mmap_write_unlock(mm);
+ /*
+ * two fput()s instead of vma_fput(vma),
+ * coz vma may not be available anymore.
+ */
fput(file);
+ if (prfile)
+ fput(prfile);
if (populate)
mm_populate(ret, populate);
if (!IS_ERR_VALUE(ret))
diff --git a/mm/nommu.c b/mm/nommu.c
index 9cb6e99215e2b..5add36afa9786 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -512,7 +512,7 @@ static void __put_nommu_region(struct vm_region *region)
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 */
@@ -591,7 +591,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
{
vma_close(vma);
if (vma->vm_file)
- fput(vma->vm_file);
+ vma_fput(vma);
put_nommu_region(vma->vm_region);
vm_area_free(vma);
}
@@ -1123,7 +1123,7 @@ 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;
@@ -1209,10 +1209,10 @@ unsigned long do_mmap(struct file *file,
error:
vma_iter_free(&vmi);
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 --git a/mm/prfile.c b/mm/prfile.c
new file mode 100644
index 0000000000000..b034d160a18f4
--- /dev/null
+++ b/mm/prfile.c
@@ -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) 2014-2025 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/mm/vma.c b/mm/vma.c
index 7621384d64cf5..3bb41fe6ac48e 100644
--- a/mm/vma.c
+++ b/mm/vma.c
@@ -248,7 +248,7 @@ static void vma_complete(struct vma_prepare *vp, struct vma_iterator *vmi,
if (vp->file) {
uprobe_munmap(vp->remove, vp->remove->vm_start,
vp->remove->vm_end);
- fput(vp->file);
+ vma_fput(vp->vma);
}
if (vp->remove->anon_vma)
anon_vma_merge(vp->vma, vp->remove);
@@ -328,7 +328,7 @@ void remove_vma(struct vm_area_struct *vma, bool unreachable)
might_sleep();
vma_close(vma);
if (vma->vm_file)
- fput(vma->vm_file);
+ vma_fput(vma);
mpol_put(vma_policy(vma));
if (unreachable)
__vm_area_free(vma);
@@ -405,7 +405,7 @@ static int __split_vma(struct vma_iterator *vmi, struct vm_area_struct *vma,
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);
@@ -1671,7 +1671,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
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);
if (vma_link(mm, new_vma))
@@ -1684,7 +1684,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
vma_close(new_vma);
if (new_vma->vm_file)
- fput(new_vma->vm_file);
+ vma_fput(new_vma);
unlink_anon_vmas(new_vma);
out_free_mempol:
kernel/tools/perf/files/patches/aufs6/aufs6-standalone.patch
+252
View File
@@ -0,0 +1,252 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 standalone patch
diff --git a/fs/dcache.c b/fs/dcache.c
index 1ab11cad60e8c..3a01c42c6639e 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1333,6 +1333,7 @@ void d_walk(struct dentry *parent, void *data,
seq = 1;
goto again;
}
+EXPORT_SYMBOL_GPL(d_walk);
struct check_mount {
struct vfsmount *mnt;
@@ -2899,6 +2900,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2)
write_sequnlock(&rename_lock);
}
+EXPORT_SYMBOL_GPL(d_exchange);
/**
* d_ancestor - search for an ancestor
diff --git a/fs/exec.c b/fs/exec.c
index 6c53920795c2e..22e10087e34fa 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -114,6 +114,7 @@ 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 --git a/fs/fcntl.c b/fs/fcntl.c
index 460791727fd9c..75ab59a3df36f 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -90,6 +90,7 @@ int setfl(int fd, struct file * filp, unsigned int arg)
out:
return error;
}
+EXPORT_SYMBOL_GPL(setfl);
/*
* Allocate an file->f_owner struct if it doesn't exist, handling racing
diff --git a/fs/file_table.c b/fs/file_table.c
index eed5ffad9997c..2f6bead424786 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -228,6 +228,7 @@ struct file *alloc_empty_file(int flags, const struct cred *cred)
}
return ERR_PTR(-ENFILE);
}
+EXPORT_SYMBOL_GPL(alloc_empty_file);
/*
* Variant of alloc_empty_file() that doesn't check and modify nr_files.
diff --git a/fs/namespace.c b/fs/namespace.c
index 85739e2d64c00..8aa96de6c151e 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -971,6 +971,7 @@ int is_current_mnt_ns(struct vfsmount *mnt)
{
return check_mnt(real_mount(mnt));
}
+EXPORT_SYMBOL_GPL(is_current_mnt_ns);
/*
* vfsmount lock must be held for write
@@ -2200,6 +2201,7 @@ struct vfsmount *collect_mounts(const struct path *path)
return ERR_CAST(tree);
return &tree->mnt;
}
+EXPORT_SYMBOL_GPL(collect_mounts);
static void free_mnt_ns(struct mnt_namespace *);
static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *, bool);
@@ -2230,6 +2232,7 @@ void drop_collected_mounts(struct vfsmount *mnt)
unlock_mount_hash();
namespace_unlock();
}
+EXPORT_SYMBOL_GPL(drop_collected_mounts);
bool has_locked_children(struct mount *mnt, struct dentry *dentry)
{
@@ -2301,6 +2304,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
}
return 0;
}
+EXPORT_SYMBOL_GPL(iterate_mounts);
static void lock_mnt_tree(struct mount *mnt)
{
diff --git a/fs/notify/group.c b/fs/notify/group.c
index 18446b7b0d495..09138e0b8a6a5 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -100,6 +100,7 @@ void fsnotify_get_group(struct fsnotify_group *group)
{
refcount_inc(&group->refcnt);
}
+EXPORT_SYMBOL_GPL(fsnotify_get_group);
/*
* Drop a reference to a group. Free it if it's through.
diff --git a/fs/open.c b/fs/open.c
index 5da4df2f9b18a..6024098fc6444 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -66,6 +66,7 @@ int do_truncate(struct mnt_idmap *idmap, struct dentry *dentry,
inode_unlock(dentry->d_inode);
return ret;
}
+EXPORT_SYMBOL_GPL(do_truncate);
long vfs_truncate(const struct path *path, loff_t length)
{
diff --git a/fs/read_write.c b/fs/read_write.c
index 64dc24afdb3a7..ec1fd6aab1759 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -576,6 +576,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
inc_syscr(current);
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)
{
@@ -691,6 +692,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
file_end_write(file);
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 --git a/fs/splice.c b/fs/splice.c
index b15fd6073b6d3..0fdb86c3813e2 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -940,6 +940,7 @@ ssize_t do_splice_from(struct pipe_inode_info *pipe, struct file *out,
return warn_unsupported(out, "write");
return out->f_op->splice_write(pipe, out, ppos, len, flags);
}
+EXPORT_SYMBOL_GPL(do_splice_from);
/*
* Indicate to the caller that there was a premature EOF when reading from the
diff --git a/fs/xattr.c b/fs/xattr.c
index 05ec7e7d9e87e..e07ffa052dfb4 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -405,6 +405,7 @@ vfs_getxattr_alloc(struct mnt_idmap *idmap, 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 --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 34b378cf7a95f..df6a751298b32 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -239,6 +239,7 @@ inline struct lock_class *lockdep_hlock_class(struct held_lock *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 --git a/kernel/task_work.c b/kernel/task_work.c
index c969f1f26be58..68eb672f425d9 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -242,3 +242,4 @@ void task_work_run(void)
} while (work);
}
}
+EXPORT_SYMBOL_GPL(task_work_run);
diff --git a/security/security.c b/security/security.c
index c5981e558bc26..045dd716e3400 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1944,6 +1944,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
return 0;
return call_int_hook(path_rmdir, dir, dentry);
}
+EXPORT_SYMBOL_GPL(security_path_rmdir);
/**
* security_path_unlink() - Check if removing a hard link is allowed
@@ -1979,6 +1980,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
return 0;
return call_int_hook(path_symlink, dir, dentry, old_name);
}
+EXPORT_SYMBOL_GPL(security_path_symlink);
/**
* security_path_link - Check if creating a hard link is allowed
@@ -1997,6 +1999,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
return 0;
return call_int_hook(path_link, old_dentry, new_dir, new_dentry);
}
+EXPORT_SYMBOL_GPL(security_path_link);
/**
* security_path_rename() - Check if renaming a file is allowed
@@ -2058,6 +2061,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
return 0;
return call_int_hook(path_chmod, path, mode);
}
+EXPORT_SYMBOL_GPL(security_path_chmod);
/**
* security_path_chown() - Check if changing the file's owner/group is allowed
@@ -2075,6 +2079,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
return 0;
return call_int_hook(path_chown, path, uid, gid);
}
+EXPORT_SYMBOL_GPL(security_path_chown);
/**
* security_path_chroot() - Check if changing the root directory is allowed
@@ -2319,6 +2324,7 @@ int security_inode_permission(struct inode *inode, int mask)
return 0;
return call_int_hook(inode_permission, inode, mask);
}
+EXPORT_SYMBOL_GPL(security_inode_permission);
/**
* security_inode_setattr() - Check if setting file attributes is allowed
@@ -2840,6 +2846,7 @@ int security_file_permission(struct file *file, int mask)
{
return call_int_hook(file_permission, file, mask);
}
+EXPORT_SYMBOL_GPL(security_file_permission);
/**
* security_file_alloc() - Allocate and init a file's LSM blob
@@ -3144,6 +3151,7 @@ int security_file_truncate(struct file *file)
{
return call_int_hook(file_truncate, file);
}
+EXPORT_SYMBOL_GPL(security_file_truncate);
/**
* security_task_alloc() - Allocate a task's LSM blob
kernel/tools/perf/files/patches/aufs6/aufs6.12-20250414.patch
+38807
View File
File diff suppressed because it is too large Load Diff
kernel/tools/perf/files/patches/aufs6/lockdep-debug.patch
+16
View File
@@ -0,0 +1,16 @@
SPDX-License-Identifier: GPL-2.0
aufs6.12 lockdep patch
diff --git a/include/linux/lockdep_types.h b/include/linux/lockdep_types.h
index 9f361d3ab9d95..57efd6ffe7a44 100644
--- a/include/linux/lockdep_types.h
+++ b/include/linux/lockdep_types.h
@@ -12,7 +12,7 @@
#include <linux/types.h>
-#define MAX_LOCKDEP_SUBCLASSES 8UL
+#define MAX_LOCKDEP_SUBCLASSES (8UL + 4)
enum lockdep_wait_type {
LD_WAIT_INV = 0, /* not checked, catch all */
kernel/tools/perf/files/patches/aufs6/tmpfs-idr.patch
+217
View File
@@ -0,0 +1,217 @@
SPDX-License-Identifier: GPL-2.0
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 515a9a6a3c6f..9de809dac3be 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -55,10 +55,13 @@ struct shmem_quota_limits {
};
struct shmem_sb_info {
+ struct mutex idr_lock;
+ bool idr_nouse;
+ struct idr idr; /* manages inode-number */
unsigned long max_blocks; /* How many blocks are allowed */
struct percpu_counter used_blocks; /* How many are allocated */
- unsigned long max_inodes; /* How many inodes are allowed */
- unsigned long free_ispace; /* How much ispace left for allocation */
+ int max_inodes; /* How many inodes are allowed */
+ unsigned long free_ispace; /* How many are left for allocation */
raw_spinlock_t stat_lock; /* Serialize shmem_sb_info changes */
umode_t mode; /* Mount mode for root directory */
unsigned char huge; /* Whether to try for hugepages */
diff --git a/mm/shmem.c b/mm/shmem.c
index 568bb290bdce..f8869230f782 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -112,7 +112,7 @@ struct shmem_falloc {
struct shmem_options {
unsigned long long blocks;
- unsigned long long inodes;
+ int inodes;
struct mempolicy *mpol;
kuid_t uid;
kgid_t gid;
@@ -144,12 +144,14 @@ static unsigned long shmem_default_max_blocks(void)
return totalram_pages() / 2;
}
-static unsigned long shmem_default_max_inodes(void)
+static int shmem_default_max_inodes(void)
{
unsigned long nr_pages = totalram_pages();
+ unsigned long ul;
- return min3(nr_pages - totalhigh_pages(), nr_pages / 2,
- ULONG_MAX / BOGO_INODE_SIZE);
+ ul = INT_MAX;
+ ul = min3(ul, nr_pages - totalhigh_pages(), nr_pages / 2);
+ return ul;
}
#endif
@@ -1291,6 +1293,11 @@ static void shmem_evict_inode(struct inode *inode)
}
simple_xattrs_free(&info->xattrs, sbinfo->max_inodes ? &freed : NULL);
+ if (!sbinfo->idr_nouse && inode->i_ino) {
+ mutex_lock(&sbinfo->idr_lock);
+ idr_remove(&sbinfo->idr, inode->i_ino);
+ mutex_unlock(&sbinfo->idr_lock);
+ }
shmem_free_inode(inode->i_sb, freed);
WARN_ON(inode->i_blocks);
clear_inode(inode);
@@ -2854,6 +2861,25 @@ static struct inode *__shmem_get_inode(struct mnt_idmap *idmap,
break;
}
+ if (!sbinfo->idr_nouse) {
+ /* inum 0 and 1 are unused */
+ mutex_lock(&sbinfo->idr_lock);
+ ino = idr_alloc(&sbinfo->idr, inode, 2, INT_MAX,
+ GFP_NOFS);
+ if (ino > 0) {
+ inode->i_ino = ino;
+ mutex_unlock(&sbinfo->idr_lock);
+ __insert_inode_hash(inode, inode->i_ino);
+ } else {
+ inode->i_ino = 0;
+ mutex_unlock(&sbinfo->idr_lock);
+ iput(inode);
+ /* shmem_free_inode() will be called */
+ inode = NULL;
+ }
+ } else
+ inode->i_ino = ino;
+
lockdep_annotate_inode_mutex_key(inode);
return inode;
}
@@ -4098,8 +4124,7 @@ static struct dentry *shmem_get_parent(struct dentry *child)
static int shmem_match(struct inode *ino, void *vfh)
{
__u32 *fh = vfh;
- __u64 inum = fh[2];
- inum = (inum << 32) | fh[1];
+ __u64 inum = fh[1];
return ino->i_ino == inum && fh[0] == ino->i_generation;
}
@@ -4118,14 +4143,11 @@ static struct dentry *shmem_fh_to_dentry(struct super_block *sb,
struct dentry *dentry = NULL;
u64 inum;
- if (fh_len < 3)
+ if (fh_len < 2)
return NULL;
- inum = fid->raw[2];
- inum = (inum << 32) | fid->raw[1];
-
- inode = ilookup5(sb, (unsigned long)(inum + fid->raw[0]),
- shmem_match, fid->raw);
+ inum = fid->raw[1];
+ inode = ilookup5(sb, inum, shmem_match, fid->raw);
if (inode) {
dentry = shmem_find_alias(inode);
iput(inode);
@@ -4137,30 +4159,15 @@ static struct dentry *shmem_fh_to_dentry(struct super_block *sb,
static int shmem_encode_fh(struct inode *inode, __u32 *fh, int *len,
struct inode *parent)
{
- if (*len < 3) {
- *len = 3;
+ if (*len < 2) {
+ *len = 2;
return FILEID_INVALID;
}
- if (inode_unhashed(inode)) {
- /* Unfortunately insert_inode_hash is not idempotent,
- * so as we hash inodes here rather than at creation
- * time, we need a lock to ensure we only try
- * to do it once
- */
- static DEFINE_SPINLOCK(lock);
- spin_lock(&lock);
- if (inode_unhashed(inode))
- __insert_inode_hash(inode,
- inode->i_ino + inode->i_generation);
- spin_unlock(&lock);
- }
-
fh[0] = inode->i_generation;
fh[1] = inode->i_ino;
- fh[2] = ((__u64)inode->i_ino) >> 32;
- *len = 3;
+ *len = 2;
return 1;
}
@@ -4259,7 +4266,7 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param)
break;
case Opt_nr_inodes:
ctx->inodes = memparse(param->string, &rest);
- if (*rest || ctx->inodes > ULONG_MAX / BOGO_INODE_SIZE)
+ if (*rest || ctx->inodes < 2 || ctx->inodes > INT_MAX)
goto bad_value;
ctx->seen |= SHMEM_SEEN_INODES;
break;
@@ -4541,7 +4548,7 @@ static int shmem_show_options(struct seq_file *seq, struct dentry *root)
if (sbinfo->max_blocks != shmem_default_max_blocks())
seq_printf(seq, ",size=%luk", K(sbinfo->max_blocks));
if (sbinfo->max_inodes != shmem_default_max_inodes())
- seq_printf(seq, ",nr_inodes=%lu", sbinfo->max_inodes);
+ seq_printf(seq, ",nr_inodes=%d", sbinfo->max_inodes);
if (sbinfo->mode != (0777 | S_ISVTX))
seq_printf(seq, ",mode=%03ho", sbinfo->mode);
if (!uid_eq(sbinfo->uid, GLOBAL_ROOT_UID))
@@ -4613,6 +4620,8 @@ static void shmem_put_super(struct super_block *sb)
#ifdef CONFIG_TMPFS_QUOTA
shmem_disable_quotas(sb);
#endif
+ if (!sbinfo->idr_nouse)
+ idr_destroy(&sbinfo->idr);
free_percpu(sbinfo->ino_batch);
percpu_counter_destroy(&sbinfo->used_blocks);
mpol_put(sbinfo->mpol);
@@ -4657,9 +4666,11 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
#else
sb->s_flags |= SB_NOUSER;
#endif
+ mutex_init(&sbinfo->idr_lock);
+ idr_init(&sbinfo->idr);
sbinfo->max_blocks = ctx->blocks;
sbinfo->max_inodes = ctx->inodes;
- sbinfo->free_ispace = sbinfo->max_inodes * BOGO_INODE_SIZE;
+ sbinfo->free_ispace = (unsigned long)sbinfo->max_inodes * BOGO_INODE_SIZE;
if (sb->s_flags & SB_KERNMOUNT) {
sbinfo->ino_batch = alloc_percpu(ino_t);
if (!sbinfo->ino_batch)
@@ -4804,6 +4815,15 @@ static int shmem_error_remove_folio(struct address_space *mapping,
return 0;
}
+static __init void shmem_no_idr(struct super_block *sb)
+{
+ struct shmem_sb_info *sbinfo;
+
+ sbinfo = SHMEM_SB(sb);
+ sbinfo->idr_nouse = true;
+ idr_destroy(&sbinfo->idr);
+}
+
static const struct address_space_operations shmem_aops = {
.writepage = shmem_writepage,
.dirty_folio = noop_dirty_folio,
@@ -4968,6 +4988,7 @@ void __init shmem_init(void)
pr_err("Could not kern_mount tmpfs\n");
goto out1;
}
+ shmem_no_idr(shm_mnt->mnt_sb);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (has_transparent_hugepage() && shmem_huge > SHMEM_HUGE_DENY)
kernel/tools/perf/files/patches/aufs6/vfs-ino.patch
+24
View File
@@ -0,0 +1,24 @@
SPDX-License-Identifier: GPL-2.0
diff --git a/fs/inode.c b/fs/inode.c
index 8dabb224f941..4f03eaa25cc2 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1070,6 +1070,8 @@ unsigned int get_next_ino(void)
unsigned int *p = &get_cpu_var(last_ino);
unsigned int res = *p;
+start:
+
#ifdef CONFIG_SMP
if (unlikely((res & (LAST_INO_BATCH-1)) == 0)) {
static atomic_t shared_last_ino;
@@ -1082,7 +1084,7 @@ unsigned int get_next_ino(void)
res++;
/* get_next_ino should not provide a 0 inode number */
if (unlikely(!res))
- res++;
+ goto start;
*p = res;
put_cpu_var(last_ino);
return res;