SPDX-License-Identifier: GPL-2.0
-aufs5.11 kbuild patch
+aufs5.x-rcN kbuild patch
diff --git a/fs/Kconfig b/fs/Kconfig
-index da524c4d7b7e0..50ab89368c2b5 100644
+index a6313a969bc5f..aca4b89d41a14 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
-@@ -288,6 +288,7 @@ source "fs/sysv/Kconfig"
+@@ -312,6 +312,7 @@ source "fs/sysv/Kconfig"
source "fs/ufs/Kconfig"
source "fs/erofs/Kconfig"
source "fs/vboxsf/Kconfig"
endif # MISC_FILESYSTEMS
diff --git a/fs/Makefile b/fs/Makefile
-index 999d1a23f036c..0cd76857ca764 100644
+index 84c5e4cdfee5a..b4fcdad8412ed 100644
--- a/fs/Makefile
+++ b/fs/Makefile
-@@ -136,3 +136,4 @@ obj-$(CONFIG_EFIVAR_FS) += efivarfs/
+@@ -138,3 +138,4 @@ obj-$(CONFIG_EFIVAR_FS) += efivarfs/
obj-$(CONFIG_EROFS_FS) += erofs/
obj-$(CONFIG_VBOXSF_FS) += vboxsf/
obj-$(CONFIG_ZONEFS_FS) += zonefs/
+obj-$(CONFIG_AUFS_FS) += aufs/
SPDX-License-Identifier: GPL-2.0
-aufs5.11 base patch
+aufs5.x-rcN base patch
diff --git a/MAINTAINERS b/MAINTAINERS
-index bfc1b86e3e733..cf773a5624338 100644
+index a4a0c2baaf274..cc2119bc60fd1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
-@@ -3017,6 +3017,19 @@ F: include/linux/audit.h
- F: include/uapi/linux/audit.h
+@@ -3122,6 +3122,19 @@ F: include/uapi/linux/audit.h
F: kernel/audit*
+ F: lib/*audit.c
+AUFS (advanced multi layered unification filesystem) FILESYSTEM
+M: "J. R. Okajima" <hooanon05g@gmail.com>
M: Miguel Ojeda <ojeda@kernel.org>
S: Maintained
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
-index e5ff328f09175..39d539df0349d 100644
+index 7bf4686af774e..a62b132cbd551 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
-@@ -761,6 +761,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
+@@ -811,6 +811,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
return error;
}
static ssize_t loop_attr_show(struct device *dev, char *page,
diff --git a/fs/dcache.c b/fs/dcache.c
-index 97e81a844a966..a7522ebbca659 100644
+index cf871a81f4fdc..bc5095b734f58 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -1292,7 +1292,7 @@ enum d_walk_ret {
+@@ -1320,7 +1320,7 @@ enum d_walk_ret {
*
* The @enter() callbacks are called with d_lock held.
*/
{
struct dentry *this_parent;
diff --git a/fs/fcntl.c b/fs/fcntl.c
-index 05b36b28f2e87..e747a47a97da4 100644
+index 9c6c6a3e2de51..02382fa9bd341 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
-@@ -32,7 +32,7 @@
+@@ -33,7 +33,7 @@
#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
{
struct inode * inode = file_inode(filp);
int error = 0;
-@@ -63,6 +63,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
+@@ -64,6 +64,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
if (filp->f_op->check_flags)
error = filp->f_op->check_flags(arg);
return error;
diff --git a/fs/inode.c b/fs/inode.c
-index 6442d97d9a4ab..e4a25c3fa9e55 100644
+index ed0cab8a32db1..7e53985e62e5e 100644
--- a/fs/inode.c
+++ b/fs/inode.c
-@@ -1769,7 +1769,7 @@ EXPORT_SYMBOL(generic_update_time);
+@@ -1782,7 +1782,7 @@ 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.
*/
if (inode->i_op->update_time)
return inode->i_op->update_time(inode, time, flags);
diff --git a/fs/namespace.c b/fs/namespace.c
-index 9d33909d0f9e3..3e16fc64df8b8 100644
+index 659a8f39c61af..1283670737826 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
-@@ -792,6 +792,12 @@ static inline int check_mnt(struct mount *mnt)
+@@ -808,6 +808,12 @@ static inline int check_mnt(struct mount *mnt)
return mnt->mnt_ns == current->nsproxy->mnt_ns;
}
* vfsmount lock must be held for write
*/
diff --git a/fs/splice.c b/fs/splice.c
-index 866d5c2367b23..55b5356262085 100644
+index 5dbce4dcc1a7d..3e6ba363b7775 100644
--- a/fs/splice.c
+++ b/fs/splice.c
-@@ -756,8 +756,8 @@ static int warn_unsupported(struct file *file, const char *op)
+@@ -759,8 +759,8 @@ static int warn_unsupported(struct file *file, const char *op)
/*
* Attempt to initiate a splice from pipe to file.
*/
{
if (unlikely(!out->f_op->splice_write))
return warn_unsupported(out, "write");
-@@ -767,9 +767,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+@@ -770,9 +770,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
/*
* Attempt to initiate a splice from a file to a pipe.
*/
if (wait)
sync_inodes_sb(sb);
diff --git a/include/linux/fs.h b/include/linux/fs.h
-index fd47deea7c176..91f3fbe5b57ff 100644
+index e7a633353fd20..376ddf1965aa2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
-@@ -1330,6 +1330,7 @@ extern void fasync_free(struct fasync_struct *);
+@@ -1381,6 +1381,7 @@ extern void fasync_free(struct fasync_struct *);
/* can be called from interrupts */
extern void kill_fasync(struct fasync_struct **, int, int);
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);
-@@ -1841,6 +1842,7 @@ struct file_operations {
+@@ -2092,6 +2093,7 @@ 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 (*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);
-@@ -2326,6 +2328,7 @@ extern int current_umask(void);
+@@ -2613,6 +2615,7 @@ 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);
/* /sys/fs */
extern struct kobject *fs_kobj;
-@@ -2562,6 +2565,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb)
+@@ -2776,6 +2779,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb)
}
void emergency_thaw_all(void);
extern const struct file_operations def_blk_fops;
extern const struct file_operations def_chr_fops;
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
-index b9e9adec73e8b..e152c49cc3163 100644
+index 9fe165beb0f9e..e47f7e15eeaf7 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
-@@ -241,6 +241,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock,
+@@ -248,6 +248,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock,
return lock->key == key;
}
+ unsigned int flags);
#endif
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
-index bdaf4829098c0..5c3bff75de111 100644
+index bf1c00c881e48..e0aaf34974df5 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
-@@ -188,7 +188,7 @@ static
+@@ -189,7 +189,7 @@ static
struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
static DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS);
{
unsigned int class_idx = hlock->class_idx;
-@@ -209,6 +209,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock)
+@@ -210,6 +210,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock)
*/
return lock_classes + class_idx;
}
#ifdef CONFIG_LOCK_STAT
static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats);
SPDX-License-Identifier: GPL-2.0
-aufs5.11 mmap patch
+aufs5.x-rcN mmap patch
diff --git a/fs/proc/base.c b/fs/proc/base.c
-index b3422cda2a91e..bda8e8ece7208 100644
+index 533d5836eb9a4..f5de60c5327f5 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
-@@ -2184,7 +2184,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
+@@ -2186,7 +2186,7 @@ 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) {
ino = inode->i_ino;
}
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
-index 602e3a52884d8..a36614b84de16 100644
+index cf25be3e03212..70af1c25ffa22 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -280,7 +280,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
-@@ -1862,7 +1865,7 @@ static int show_numa_map(struct seq_file *m, void *v)
+@@ -1865,7 +1868,7 @@ 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;
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 ecdf8a8cd6aeb..d9b3ec02ecbef 100644
+index 73a52aba448f9..5dd42acf0707b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
-@@ -1715,6 +1715,28 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
+@@ -1806,6 +1806,28 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
unmap_mapping_range(mapping, holebegin, holelen, 0);
}
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 07d9acb5b19c4..2f395ab624f38 100644
+index 7f8ee09c711f4..3a9a798a4ae1f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
-@@ -278,6 +278,7 @@ struct vm_region {
+@@ -294,6 +294,7 @@ 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 */
int vm_usage; /* region usage count (access under nommu_region_sem) */
bool vm_icache_flushed : 1; /* true if the icache has been flushed for
-@@ -357,6 +358,7 @@ struct vm_area_struct {
+@@ -373,6 +374,7 @@ 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). */
#ifdef CONFIG_SWAP
diff --git a/kernel/fork.c b/kernel/fork.c
-index d66cd1014211b..a2addc21d63fc 100644
+index 38681ad44c76b..95de8e9843192 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
-@@ -555,7 +555,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
- struct inode *inode = file_inode(file);
+@@ -573,7 +573,7 @@ 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);
- if (tmp->vm_flags & VM_DENYWRITE)
- put_write_access(inode);
i_mmap_lock_write(mapping);
+ if (tmp->vm_flags & VM_SHARED)
+ mapping_allow_writable(mapping);
diff --git a/mm/Makefile b/mm/Makefile
-index b6cd2fffa4922..784e2cebe1eac 100644
+index fc60a40ce954b..c715b0138237b 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -52,7 +52,7 @@ obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
# Give 'page_alloc' its own module-parameter namespace
page-alloc-y := page_alloc.o
diff --git a/mm/filemap.c b/mm/filemap.c
-index aa0e0fb046700..d883a19f4237e 100644
+index dae481293b5d9..52bf3bf87b757 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
-@@ -2993,7 +2993,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)
+@@ -3350,7 +3350,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)
vm_fault_t ret = VM_FAULT_LOCKED;
sb_start_pagefault(mapping->host->i_sb);
if (page->mapping != mapping) {
unlock_page(page);
diff --git a/mm/mmap.c b/mm/mmap.c
-index dc7206032387c..09b10e20c097c 100644
+index 88dcc5c252255..6c276614ca962 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
-@@ -179,7 +179,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
+@@ -183,7 +183,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
if (vma->vm_file)
mpol_put(vma_policy(vma));
vm_area_free(vma);
return next;
-@@ -951,7 +951,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
+@@ -952,7 +952,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
if (remove_next) {
if (file) {
uprobe_munmap(next, next->vm_start, next->vm_end);
}
if (next->anon_vma)
anon_vma_merge(vma, next);
-@@ -1897,7 +1897,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
+@@ -1873,7 +1873,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
return addr;
unmap_and_free_vma:
vma->vm_file = NULL;
/* Undo any partial mapping done by a device driver. */
-@@ -2757,7 +2757,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
+@@ -2731,7 +2731,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
goto out_free_mpol;
if (new->vm_file)
if (new->vm_ops && new->vm_ops->open)
new->vm_ops->open(new);
-@@ -2776,7 +2776,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
+@@ -2750,7 +2750,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
if (new->vm_ops && new->vm_ops->close)
new->vm_ops->close(new);
if (new->vm_file)
unlink_anon_vmas(new);
out_free_mpol:
mpol_put(vma_policy(new));
-@@ -2969,7 +2969,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+@@ -2945,7 +2945,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
struct vm_area_struct *vma;
unsigned long populate = 0;
unsigned long ret = -EINVAL;
pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n",
current->comm, current->pid);
-@@ -3044,10 +3044,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
- }
- }
+@@ -3001,10 +3001,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+ if (vma->vm_flags & VM_LOCKED)
+ flags |= MAP_LOCKED;
- file = get_file(vma->vm_file);
+ vma_get_file(vma);
out:
mmap_write_unlock(mm);
if (populate)
-@@ -3334,7 +3351,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
+@@ -3285,7 +3302,7 @@ 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)
new_vma->vm_ops->open(new_vma);
vma_link(mm, new_vma, prev, rb_link, rb_parent);
diff --git a/mm/nommu.c b/mm/nommu.c
-index 870fea12823e6..edbc99eee5b6b 100644
+index 02d2427b8f9e8..a7419302ab4ed 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
-@@ -533,7 +533,7 @@ static void __put_nommu_region(struct vm_region *region)
+@@ -523,7 +523,7 @@ static void __put_nommu_region(struct vm_region *region)
up_write(&nommu_region_sem);
if (region->vm_file)
/* IO memory and memory shared directly out of the pagecache
* from ramfs/tmpfs mustn't be released here */
-@@ -665,7 +665,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
+@@ -655,7 +655,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
if (vma->vm_file)
put_nommu_region(vma->vm_region);
vm_area_free(vma);
}
-@@ -1188,7 +1188,7 @@ unsigned long do_mmap(struct file *file,
+@@ -1175,7 +1175,7 @@ unsigned long do_mmap(struct file *file,
goto error_just_free;
}
}
kmem_cache_free(vm_region_jar, region);
region = pregion;
result = start;
-@@ -1265,10 +1265,10 @@ unsigned long do_mmap(struct file *file,
+@@ -1252,10 +1252,10 @@ unsigned long do_mmap(struct file *file,
up_write(&nommu_region_sem);
error:
if (region->vm_file)
diff --git a/mm/prfile.c b/mm/prfile.c
new file mode 100644
-index 0000000000000..00d51187c3250
+index 0000000000000..511543ab1b418
--- /dev/null
+++ b/mm/prfile.c
@@ -0,0 +1,86 @@
+ *
+ * See Documentation/filesystems/aufs/design/06mmap.txt
+ *
-+ * Copyright (c) 2014-2020 Junjro R. Okajima
++ * Copyright (c) 2014-2021 Junjro R. Okajima
+ * Copyright (c) 2014 Ian Campbell
+ */
+
+}
+#endif /* !CONFIG_MMU */
SPDX-License-Identifier: GPL-2.0
-aufs5.11 standalone patch
+aufs5.x-rcN standalone patch
diff --git a/fs/dcache.c b/fs/dcache.c
-index a7522ebbca659..d429c984133ca 100644
+index bc5095b734f58..9508bd57a3bc0 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -1397,6 +1397,7 @@ void d_walk(struct dentry *parent, void *data,
+@@ -1425,6 +1425,7 @@ void d_walk(struct dentry *parent, void *data,
seq = 1;
goto again;
}
struct check_mount {
struct vfsmount *mnt;
-@@ -2942,6 +2943,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2)
+@@ -2970,6 +2971,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2)
write_sequnlock(&rename_lock);
}
/**
* d_ancestor - search for an ancestor
diff --git a/fs/exec.c b/fs/exec.c
-index 5d4d52039105c..adc75877cdee7 100644
+index a098c133d8d74..7b6a249fd4778 100644
--- a/fs/exec.c
+++ b/fs/exec.c
-@@ -114,6 +114,7 @@ bool path_noexec(const struct path *path)
+@@ -111,6 +111,7 @@ bool path_noexec(const struct path *path)
return (path->mnt->mnt_flags & MNT_NOEXEC) ||
(path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC);
}
#ifdef CONFIG_USELIB
/*
diff --git a/fs/fcntl.c b/fs/fcntl.c
-index e747a47a97da4..d6211ff25c9a4 100644
+index 02382fa9bd341..3418c60b90146 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
-@@ -85,6 +85,7 @@ int setfl(int fd, struct file *filp, unsigned long arg)
+@@ -86,6 +86,7 @@ int setfl(int fd, struct file *filp, unsigned long arg)
out:
return error;
}
void __init files_init(void)
{
diff --git a/fs/inode.c b/fs/inode.c
-index e4a25c3fa9e55..497326faa1247 100644
+index 7e53985e62e5e..e36c5b2f96df7 100644
--- a/fs/inode.c
+++ b/fs/inode.c
-@@ -1775,6 +1775,7 @@ int update_time(struct inode *inode, struct timespec64 *time, int flags)
+@@ -1788,6 +1788,7 @@ int update_time(struct inode *inode, struct timespec64 *time, int flags)
return inode->i_op->update_time(inode, time, flags);
return generic_update_time(inode, time, flags);
}
/**
* atime_needs_update - update the access time
diff --git a/fs/namespace.c b/fs/namespace.c
-index 3e16fc64df8b8..eed3453ec40a8 100644
+index 1283670737826..db99365620118 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
-@@ -431,6 +431,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
+@@ -439,6 +439,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
mnt_dec_writers(real_mount(mnt));
preempt_enable();
}
/**
* mnt_drop_write - give up write access to a mount
-@@ -797,6 +798,7 @@ int is_current_mnt_ns(struct vfsmount *mnt)
+@@ -813,6 +814,7 @@ int is_current_mnt_ns(struct vfsmount *mnt)
{
return check_mnt(real_mount(mnt));
}
/*
* vfsmount lock must be held for write
-@@ -1967,6 +1969,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
+@@ -2011,6 +2013,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
}
return 0;
}
static void lock_mnt_tree(struct mount *mnt)
{
diff --git a/fs/notify/group.c b/fs/notify/group.c
-index a4a4b1c64d32a..86dc2efb1850c 100644
+index fb89c351295d6..460ad19c2570a 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -100,6 +100,7 @@ void fsnotify_get_group(struct fsnotify_group *group)
/*
* Drop a reference to a group. Free it if it's through.
diff --git a/fs/open.c b/fs/open.c
-index 1e06e443a5651..c3bbb8aafcd1a 100644
+index daa324606a41f..0d8bb2f1922a3 100644
--- a/fs/open.c
+++ b/fs/open.c
-@@ -65,6 +65,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
+@@ -65,6 +65,7 @@ int do_truncate(struct user_namespace *mnt_userns, struct dentry *dentry,
inode_unlock(dentry->d_inode);
return ret;
}
long vfs_truncate(const struct path *path, loff_t length)
{
diff --git a/fs/read_write.c b/fs/read_write.c
-index 75f764b434184..7582bb3fb634b 100644
+index af057c57bdc64..76017f8331fbf 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
-@@ -503,6 +503,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
+@@ -492,6 +492,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
inc_syscr(current);
return ret;
}
static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
{
-@@ -613,6 +614,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
+@@ -602,6 +603,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
file_end_write(file);
return ret;
}
/* 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 55b5356262085..c13ac0fbac318 100644
+index 3e6ba363b7775..7c1be373eb7cd 100644
--- a/fs/splice.c
+++ b/fs/splice.c
-@@ -763,6 +763,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+@@ -766,6 +766,7 @@ long 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);
}
/*
* Attempt to initiate a splice from a file to a pipe.
-@@ -787,6 +788,7 @@ long do_splice_to(struct file *in, loff_t *ppos,
+@@ -795,6 +796,7 @@ long do_splice_to(struct file *in, loff_t *ppos,
return warn_unsupported(in, "read");
return in->f_op->splice_read(in, ppos, pipe, len, flags);
}
/*
* Write out and wait upon all dirty data associated with this
diff --git a/fs/xattr.c b/fs/xattr.c
-index fd57153b1f617..d8e9d0d6853ef 100644
+index 5c8c5175b385c..ff7e9ff774b73 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
-@@ -371,6 +371,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
+@@ -384,6 +384,7 @@ vfs_getxattr_alloc(struct user_namespace *mnt_userns, struct dentry *dentry,
*xattr_value = value;
return error;
}
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 5c3bff75de111..ff00031462623 100644
+index e0aaf34974df5..d7b737731d4ef 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
-@@ -209,6 +209,7 @@ inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
+@@ -210,6 +210,7 @@ inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
*/
return lock_classes + class_idx;
}
#ifdef CONFIG_LOCK_STAT
diff --git a/kernel/task_work.c b/kernel/task_work.c
-index 9cde961875c0a..ac8c79dc81813 100644
+index 1698fbe6f0e13..081b05acadf82 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
-@@ -143,3 +143,4 @@ void task_work_run(void)
+@@ -167,3 +167,4 @@ void task_work_run(void)
} while (work);
}
}
+EXPORT_SYMBOL_GPL(task_work_run);
diff --git a/security/security.c b/security/security.c
-index 7b09cfbae94f7..3e060cc948262 100644
+index 9ffa9e9c5c554..83b533a3fb8e8 100644
--- a/security/security.c
+++ b/security/security.c
-@@ -1094,6 +1094,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
+@@ -1147,6 +1147,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
return 0;
return call_int_hook(path_rmdir, 0, dir, dentry);
}
int security_path_unlink(const struct path *dir, struct dentry *dentry)
{
-@@ -1110,6 +1111,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
+@@ -1163,6 +1164,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
return 0;
return call_int_hook(path_symlink, 0, dir, dentry, old_name);
}
int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
struct dentry *new_dentry)
-@@ -1118,6 +1120,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
+@@ -1171,6 +1173,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
return 0;
return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
}
int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
const struct path *new_dir, struct dentry *new_dentry,
-@@ -1145,6 +1148,7 @@ int security_path_truncate(const struct path *path)
+@@ -1198,6 +1201,7 @@ int security_path_truncate(const struct path *path)
return 0;
return call_int_hook(path_truncate, 0, path);
}
int security_path_chmod(const struct path *path, umode_t mode)
{
-@@ -1152,6 +1156,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
+@@ -1205,6 +1209,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
return 0;
return call_int_hook(path_chmod, 0, path, mode);
}
int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
{
-@@ -1159,6 +1164,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
+@@ -1212,6 +1217,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
return 0;
return call_int_hook(path_chown, 0, path, uid, gid);
}
int security_path_chroot(const struct path *path)
{
-@@ -1259,6 +1265,7 @@ int security_inode_permission(struct inode *inode, int mask)
+@@ -1312,6 +1318,7 @@ int security_inode_permission(struct inode *inode, int mask)
return 0;
return call_int_hook(inode_permission, 0, inode, mask);
}
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
-@@ -1451,6 +1458,7 @@ int security_file_permission(struct file *file, int mask)
+@@ -1509,6 +1516,7 @@ int security_file_permission(struct file *file, int mask)
return fsnotify_perm(file, mask);
}
{
diff -urN /usr/share/empty/Documentation/ABI/testing/debugfs-aufs linux/Documentation/ABI/testing/debugfs-aufs
--- /usr/share/empty/Documentation/ABI/testing/debugfs-aufs 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/ABI/testing/debugfs-aufs 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/ABI/testing/debugfs-aufs 2021-11-01 23:48:34.199692595 +0100
@@ -0,0 +1,55 @@
+What: /debug/aufs/si_<id>/
+Date: March 2009
+ 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
++What: /debug/aufs/si_<id>/xi<branch-index>
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ will be empty. About XINO files, see the aufs manual.
diff -urN /usr/share/empty/Documentation/ABI/testing/sysfs-aufs linux/Documentation/ABI/testing/sysfs-aufs
--- /usr/share/empty/Documentation/ABI/testing/sysfs-aufs 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/ABI/testing/sysfs-aufs 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/ABI/testing/sysfs-aufs 2021-11-01 23:48:34.199692595 +0100
@@ -0,0 +1,31 @@
+What: /sys/fs/aufs/si_<id>/
+Date: March 2009
+ per aufs mount, where <id> is a unique id generated
+ internally.
+
-+What: /sys/fs/aufs/si_<id>/br0, br1 ... brN
++What: /sys/fs/aufs/si_<id>/br<idx>
+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
++What: /sys/fs/aufs/si_<id>/brid<idx>
+Date: July 2013
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ will be empty. About XINO files, see the aufs manual.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt linux/Documentation/filesystems/aufs/design/01intro.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/01intro.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/01intro.txt 2021-11-01 23:48:34.199692595 +0100
@@ -0,0 +1,171 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+about it. But currently I have implemented it in kernel space.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt linux/Documentation/filesystems/aufs/design/02struct.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/02struct.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/02struct.txt 2021-11-01 23:48:34.199692595 +0100
@@ -0,0 +1,258 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+For this purpose, use "aumvdown" command in aufs-util.git.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.txt linux/Documentation/filesystems/aufs/design/03atomic_open.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/03atomic_open.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/03atomic_open.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,85 @@
+
-+# Copyright (C) 2015-2020 Junjiro R. Okajima
++# Copyright (C) 2015-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+ be implemented in aufs, but not all I am afraid.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt linux/Documentation/filesystems/aufs/design/03lookup.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/03lookup.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/03lookup.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,113 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+ by over-mounting something (or another method).
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt linux/Documentation/filesystems/aufs/design/04branch.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/04branch.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/04branch.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,74 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+ same named entry on the upper branch.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.txt linux/Documentation/filesystems/aufs/design/05wbr_policy.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/05wbr_policy.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/05wbr_policy.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,64 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+ copyup policy.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.dot linux/Documentation/filesystems/aufs/design/06dirren.dot
--- /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.dot 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/06dirren.dot 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/06dirren.dot 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,31 @@
+
+// to view this graph, run dot(1) command in GRAPHVIZ.
+}
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt linux/Documentation/filesystems/aufs/design/06dirren.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/06dirren.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/06dirren.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,102 @@
+
-+# Copyright (C) 2017-2020 Junjiro R. Okajima
++# Copyright (C) 2017-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+equivalen to udba=reval case.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt linux/Documentation/filesystems/aufs/design/06fhsm.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/06fhsm.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/06fhsm.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,120 @@
+
-+# Copyright (C) 2011-2020 Junjiro R. Okajima
++# Copyright (C) 2011-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+should restore the original file state after an error happens.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt linux/Documentation/filesystems/aufs/design/06mmap.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/06mmap.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/06mmap.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,72 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+I have to give up this "looks-smater" approach.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt linux/Documentation/filesystems/aufs/design/06xattr.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/06xattr.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/06xattr.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,96 @@
+
-+# Copyright (C) 2014-2020 Junjiro R. Okajima
++# Copyright (C) 2014-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+now, aufs implements the branch attributes to ignore the error.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt linux/Documentation/filesystems/aufs/design/07export.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/07export.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/07export.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,58 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+ lookup_one_len(), vfs_getattr(), encode_fh() and others.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt linux/Documentation/filesystems/aufs/design/08shwh.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/08shwh.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/08shwh.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,52 @@
+
-+# Copyright (C) 2005-2020 Junjiro R. Okajima
++# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+initramfs will use it to replace the old one at the next boot.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt linux/Documentation/filesystems/aufs/design/10dynop.txt
--- /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/design/10dynop.txt 2021-02-24 13:33:42.737680181 +0100
++++ linux/Documentation/filesystems/aufs/design/10dynop.txt 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,47 @@
+
-+# Copyright (C) 2010-2020 Junjiro R. Okajima
++# Copyright (C) 2010-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+regular files only.
diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documentation/filesystems/aufs/README
--- /usr/share/empty/Documentation/filesystems/aufs/README 1970-01-01 01:00:00.000000000 +0100
-+++ linux/Documentation/filesystems/aufs/README 2021-02-24 13:33:42.737680181 +0100
-@@ -0,0 +1,401 @@
++++ linux/Documentation/filesystems/aufs/README 2021-11-01 23:48:34.199692595 +0100
+@@ -0,0 +1,396 @@
+
+Aufs5 -- advanced multi layered unification filesystem version 5.x
+http://aufs.sf.net
+For aufs5-linux tree,
+- enable CONFIG_AUFS_FS.
+- set other aufs configurations if necessary.
++- for aufs5.13 and later
++ 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 customize some LOCKDEP numbers. Here are what I use on my
++ test environment.
++ CONFIG_LOCKDEP_BITS=21
++ CONFIG_LOCKDEP_CHAINS_BITS=21
++ CONFIG_LOCKDEP_STACK_TRACE_BITS=24
+
+For aufs5-standalone tree,
+There are several ways to build.
+ 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
+ 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 you don't know what LOCKDEP is, then you don't have apply this
-+ patch.
+
+
+4. Usage
+# End: ;
diff -urN /usr/share/empty/fs/aufs/aufs.h linux/fs/aufs/aufs.h
--- /usr/share/empty/fs/aufs/aufs.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/aufs.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/aufs.h 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_H__ */
diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
--- /usr/share/empty/fs/aufs/branch.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/branch.c 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/branch.c 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,1427 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h
--- /usr/share/empty/fs/aufs/branch.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/branch.h 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,364 @@
++++ linux/fs/aufs/branch.h 2021-11-01 23:48:34.203025928 +0100
+@@ -0,0 +1,375 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ return br->br_path.dentry;
+}
+
++static inline struct user_namespace *au_br_userns(struct au_branch *br)
++{
++ return mnt_user_ns(br->br_path.mnt);
++}
++
+static inline struct super_block *au_br_sb(struct au_branch *br)
+{
+ return au_br_mnt(br)->mnt_sb;
+}
+
+static inline
++struct user_namespace *au_sbr_userns(struct super_block *sb, aufs_bindex_t bindex)
++{
++ return au_br_userns(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));
+#endif /* __AUFS_BRANCH_H__ */
diff -urN /usr/share/empty/fs/aufs/conf.mk linux/fs/aufs/conf.mk
--- /usr/share/empty/fs/aufs/conf.mk 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/conf.mk 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/conf.mk 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: GPL-2.0
+
+-include ${srctree}/${src}/conf_priv.mk
diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
--- /usr/share/empty/fs/aufs/cpup.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/cpup.c 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,1445 @@
++++ linux/fs/aufs/cpup.c 2021-11-01 23:48:34.203025928 +0100
+@@ -0,0 +1,1459 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+};
+
+static noinline_for_stack
-+int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src,
++int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct path *h_src,
+ struct au_cpup_reg_attr *h_src_attr)
+{
+ int err, sbits, icex;
+ 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);
++ h_path.dentry = au_h_dptr(dst, bindex);
++ h_idst = d_inode(h_path.dentry);
++ h_isrc = d_inode(h_src->dentry);
+ ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID
+ | ATTR_ATIME | ATTR_MTIME
+ | ATTR_ATIME_SET | ATTR_MTIME_SET;
+ 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);
++ err = au_cpup_xattr(&h_path, h_src, icex, verbose);
+ }
+
+ return err;
+ int err;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
++ struct user_namespace *h_userns;
+
++ h_userns = mnt_user_ns(h_path->mnt);
+ 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);
++ err = vfsub_removexattr(h_userns, h_dentry, XATTR_NAME_POSIX_ACL_ACCESS);
+ AuTraceErr(err);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ if (!err)
-+ err = vfsub_acl_chmod(h_inode, mode);
++ err = vfsub_acl_chmod(h_userns, h_inode, mode);
+
+ AuTraceErr(err);
+ return err;
+{
+ int err;
+ struct inode *dir, *inode;
++ struct user_namespace *h_userns;
+
-+ err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT);
++ h_userns = mnt_user_ns(h_path->mnt);
++ err = vfsub_removexattr(h_userns, h_path->dentry,
++ XATTR_NAME_POSIX_ACL_DEFAULT);
+ AuTraceErr(err);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+{
+ int err;
+ struct dentry *dentry, *h_dentry, *h_parent, *parent;
++ struct path h_ppath;
+ struct inode *h_dir;
+ aufs_bindex_t bdst;
+
+ dentry = cpg->dentry;
+ bdst = cpg->bdst;
++ h_ppath.mnt = au_sbr_mnt(dentry->d_sb, bdst);
+ h_dentry = au_h_dptr(dentry, bdst);
+ if (!au_ftest_cpup(cpg->flags, OVERWRITE)) {
+ dget(h_dentry);
+ } else {
+ err = 0;
+ parent = dget_parent(dentry);
-+ h_parent = au_h_dptr(parent, bdst);
++ h_ppath.dentry = au_h_dptr(parent, bdst);
+ dput(parent);
-+ h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent);
++ h_path->dentry = vfsub_lkup_one(&dentry->d_name, &h_ppath);
+ if (IS_ERR(h_path->dentry))
+ err = PTR_ERR(h_path->dentry);
+ }
+ struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode;
+ struct super_block *sb;
+ struct au_branch *br;
++ struct path h_src_path;
+ /* to reduce stack size */
+ struct {
+ struct au_dtime dt;
+ /* todo: necessary? */
+ /* au_pin_hdir_unlock(cpg->pin); */
+
-+ err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr);
++ h_src_path.dentry = h_src;
++ h_src_path.mnt = au_sbr_mnt(sb, cpg->bsrc);
++ err = cpup_iattr(cpg->dentry, cpg->bdst, &h_src_path, &a->h_src_attr);
+ if (unlikely(err)) {
+ /* todo: necessary? */
+ /* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */
+ struct dentry *dentry, *parent;
+ struct file *h_file;
+ struct inode *h_dir;
++ struct user_namespace *h_userns;
+
+ dentry = cpg->dentry;
+ h_file = NULL;
+
+ 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)
++ h_userns = au_sbr_userns(dentry->d_sb, cpg->bdst);
++ if (!au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC | MAY_WRITE)
+ && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+ err = au_cpup_simple(cpg);
+ else {
+ struct inode *dir, *h_dir, *h_tmpdir;
+ struct au_wbr *wbr;
+ struct au_pin wh_pin, *pin_orig;
++ struct user_namespace *h_userns;
+
+ dentry = cpg->dentry;
+ bdst = cpg->bdst;
+ cpg->pin = &wh_pin;
+ }
+
-+ if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE)
++ h_userns = au_sbr_userns(dentry->d_sb, bdst);
++ if (!au_test_h_perm_sio(h_userns, h_tmpdir, MAY_EXEC | MAY_WRITE)
+ && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+ err = au_cpup_wh(cpg, file);
+ else {
+}
diff -urN /usr/share/empty/fs/aufs/cpup.h linux/fs/aufs/cpup.h
--- /usr/share/empty/fs/aufs/cpup.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/cpup.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/cpup.h 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_CPUP_H__ */
diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
--- /usr/share/empty/fs/aufs/dbgaufs.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dbgaufs.c 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dbgaufs.c 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,526 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/dbgaufs.h linux/fs/aufs/dbgaufs.h
--- /usr/share/empty/fs/aufs/dbgaufs.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dbgaufs.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dbgaufs.h 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __DBGAUFS_H__ */
diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
--- /usr/share/empty/fs/aufs/dcsub.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dcsub.c 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dcsub.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,225 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/dcsub.h linux/fs/aufs/dcsub.h
--- /usr/share/empty/fs/aufs/dcsub.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dcsub.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dcsub.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_DCSUB_H__ */
diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
--- /usr/share/empty/fs/aufs/debug.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/debug.c 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,441 @@
++++ linux/fs/aufs/debug.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,444 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ AuDbgDentry(dentry);
+ AuDbgInode(inode);
+ au_debug_off();
-+ BUG();
++ if (au_test_fuse(h_inode->i_sb))
++ WARN_ON_ONCE(1);
++ else
++ BUG();
+ }
+ }
+}
+}
diff -urN /usr/share/empty/fs/aufs/debug.h linux/fs/aufs/debug.h
--- /usr/share/empty/fs/aufs/debug.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/debug.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/debug.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,226 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_DEBUG_H__ */
diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
--- /usr/share/empty/fs/aufs/dentry.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dentry.c 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,1154 @@
++++ linux/fs/aufs/dentry.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,1169 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ struct au_branch *br;
++ struct user_namespace *h_userns;
++ struct path h_path;
+ int wh_found, opq;
+ unsigned char wh_able;
+ const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG);
+
+ wh_found = 0;
+ br = au_sbr(dentry->d_sb, bindex);
++ h_path.dentry = h_parent;
++ h_path.mnt = au_br_mnt(br);
++ h_userns = au_br_userns(br);
+ wh_able = !!au_br_whable(br->br_perm);
+ if (wh_able)
-+ wh_found = au_wh_test(h_parent, &args->whname, ignore_perm);
++ wh_found = au_wh_test(h_userns, &h_path, &args->whname,
++ ignore_perm);
+ h_dentry = ERR_PTR(wh_found);
+ if (!wh_found)
+ goto real_lookup;
+
+real_lookup:
+ if (!ignore_perm)
-+ h_dentry = vfsub_lkup_one(args->name, h_parent);
++ h_dentry = vfsub_lkup_one(args->name, &h_path);
+ else
-+ h_dentry = au_sio_lkup_one(args->name, h_parent);
++ h_dentry = au_sio_lkup_one(h_userns, args->name, &h_path);
+ if (IS_ERR(h_dentry)) {
+ if (PTR_ERR(h_dentry) == -ENAMETOOLONG
+ && !allow_neg)
+ || (d_really_is_positive(dentry) && !d_is_dir(dentry)))
+ goto out; /* success */
+
++ h_path.dentry = h_dentry;
+ inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
-+ opq = au_diropq_test(h_dentry);
++ opq = au_diropq_test(h_userns, &h_path);
+ inode_unlock_shared(h_inode);
+ if (opq > 0)
+ au_set_dbdiropq(dentry, bindex);
+ return err;
+}
+
-+struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent)
++struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name,
++ struct path *ppath)
+{
+ struct dentry *dentry;
+ int wkq_err;
+
-+ if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC))
-+ dentry = vfsub_lkup_one(name, parent);
++ if (!au_test_h_perm_sio(userns, d_inode(ppath->dentry), MAY_EXEC))
++ dentry = vfsub_lkup_one(name, ppath);
+ else {
+ struct vfsub_lkup_one_args args = {
+ .errp = &dentry,
+ .name = name,
-+ .parent = parent
++ .ppath = ppath
+ };
+
+ wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args);
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh)
+{
+ int err;
-+ struct dentry *parent, *h_parent, *h_dentry;
++ struct dentry *parent, *h_dentry;
+ struct au_branch *br;
++ struct user_namespace *h_userns;
++ struct path h_ppath;
+
+ parent = dget_parent(dentry);
-+ h_parent = au_h_dptr(parent, bindex);
+ br = au_sbr(dentry->d_sb, bindex);
++ h_ppath.dentry = au_h_dptr(parent, bindex);
++ h_ppath.mnt = au_br_mnt(br);
++ h_userns = au_br_userns(br);
+ if (wh)
-+ h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
++ h_dentry = au_whtmp_lkup(h_ppath.dentry, br, &dentry->d_name);
+ else
-+ h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent);
++ h_dentry = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath);
+ err = PTR_ERR(h_dentry);
+ if (IS_ERR(h_dentry))
+ goto out;
+ struct inode *h_inode;
+ struct dentry *h_d;
+ struct super_block *h_sb;
++ struct path h_ppath;
+
+ err = 0;
+ memset(&ia, -1, sizeof(ia));
+ goto out;
+
+ /* main purpose is namei.c:cached_lookup() and d_revalidate */
-+ h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent);
++ h_ppath.dentry = h_parent;
++ h_ppath.mnt = au_br_mnt(br);
++ h_d = vfsub_lkup_one(&h_dentry->d_name, &h_ppath);
+ err = PTR_ERR(h_d);
+ if (IS_ERR(h_d))
+ goto out;
+};
diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
--- /usr/share/empty/fs/aufs/dentry.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dentry.h 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,268 @@
++++ linux/fs/aufs/dentry.h 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,269 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+/* 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);
++struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name,
++ struct path *ppath);
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+ struct dentry *h_parent, struct au_branch *br);
+
+#endif /* __AUFS_DENTRY_H__ */
diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
--- /usr/share/empty/fs/aufs/dinfo.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dinfo.c 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dinfo.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
--- /usr/share/empty/fs/aufs/dir.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dir.c 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,763 @@
++++ linux/fs/aufs/dir.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,765 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ int err, wkq_err;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
++ struct user_namespace *h_userns;
+
++ h_userns = au_sbr_userns(dentry->d_sb, arg->bindex);
+ 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);
++ err = au_test_h_perm_sio(h_userns, h_inode, MAY_EXEC | MAY_READ);
+ inode_unlock_shared(h_inode);
+ if (!err)
+ err = do_test_empty(dentry, arg);
+};
diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h
--- /usr/share/empty/fs/aufs/dir.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dir.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dir.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_DIR_H__ */
diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c
--- /usr/share/empty/fs/aufs/dirren.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dirren.c 2021-02-24 13:33:42.741013619 +0100
-@@ -0,0 +1,1316 @@
++++ linux/fs/aufs/dirren.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,1315 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2017-2020 Junjiro R. Okajima
++ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ dir = d_inode(path->dentry);
+ inode_lock_nested(dir, AuLsc_I_CHILD);
+ }
-+ hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry);
++ hinopath.mnt = path->mnt;
++ hinopath.dentry = vfsub_lkup_one(&hinoname, (struct path *)path);
+ err = PTR_ERR(hinopath.dentry);
+ if (IS_ERR(hinopath.dentry))
+ goto out_unlock;
+ }
+ flags = O_WRONLY;
+ }
-+ hinopath.mnt = path->mnt;
+ hinofile = vfsub_dentry_open(&hinopath, flags);
+ if (suspend)
+ au_hn_inode_unlock(hdir);
+ AuDebugOn(elm
+ && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm)));
+
-+ infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry,
++ infopath.dentry = vfsub_lookup_one_len(w->whname, &w->h_ppath,
+ w->whnamelen);
+ AuTraceErrPtr(infopath.dentry);
+ if (IS_ERR(infopath.dentry)) {
+ 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);
++ infopath.dentry = vfsub_lookup_one_len(whname, h_ppath, whnamelen);
+ if (IS_ERR(infopath.dentry)) {
+ drinfo = (void *)infopath.dentry;
+ goto out;
+}
diff -urN /usr/share/empty/fs/aufs/dirren.h linux/fs/aufs/dirren.h
--- /usr/share/empty/fs/aufs/dirren.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dirren.h 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/dirren.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2017-2020 Junjiro R. Okajima
++ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_DIRREN_H__ */
diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
--- /usr/share/empty/fs/aufs/dynop.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dynop.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/dynop.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2010-2020 Junjiro R. Okajima
++ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/dynop.h linux/fs/aufs/dynop.h
--- /usr/share/empty/fs/aufs/dynop.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/dynop.h 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/dynop.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2010-2020 Junjiro R. Okajima
++ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_DYNOP_H__ */
diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
--- /usr/share/empty/fs/aufs/export.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/export.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,837 @@
++++ linux/fs/aufs/export.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,831 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+
+ /* do not call vfsub_lkup_one() */
+ dir = d_inode(parent);
-+ dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen);
++ dentry = vfsub_lookup_one_len_unlocked(arg.name, path, arg.namelen);
+ AuTraceErrPtr(dentry);
+ if (IS_ERR(dentry))
+ goto out_name;
+ 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);
-+ }
++ else
++ err = sync_inode_metadata(h_inode, /*wait*/1);
+
+ au_cpup_attr_timesizes(inode);
+ ii_write_unlock(inode);
+}
diff -urN /usr/share/empty/fs/aufs/fhsm.c linux/fs/aufs/fhsm.c
--- /usr/share/empty/fs/aufs/fhsm.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/fhsm.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/fhsm.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2011-2020 Junjiro R. Okajima
++ * Copyright (C) 2011-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c
--- /usr/share/empty/fs/aufs/file.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/file.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/file.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,863 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+};
diff -urN /usr/share/empty/fs/aufs/file.h linux/fs/aufs/file.h
--- /usr/share/empty/fs/aufs/file.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/file.h 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/file.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_FILE_H__ */
diff -urN /usr/share/empty/fs/aufs/finfo.c linux/fs/aufs/finfo.c
--- /usr/share/empty/fs/aufs/finfo.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/finfo.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/finfo.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c
--- /usr/share/empty/fs/aufs/f_op.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/f_op.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,762 @@
++++ linux/fs/aufs/f_op.c 2021-11-01 23:48:34.206359262 +0100
+@@ -0,0 +1,771 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ return err;
+}
+
++/*
++ * We may be able to remove aufs_splice_{read,write}() since almost all FSes
++ * don't have their own .splice_{read,write} implimentations, and they use
++ * generic_file_splice_read() and iter_file_splice_write() who can act like the
++ * simple converters to f_op->iter_read() and ->iter_write().
++ * But we keep our own implementations because some non-mainlined FSes may have
++ * their own .splice_{read,write} implimentations and aufs doesn't want to take
++ * away an opportunity to co-work with aufs from them.
++ */
+static ssize_t aufs_splice_read(struct file *file, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
+};
diff -urN /usr/share/empty/fs/aufs/fstype.h linux/fs/aufs/fstype.h
--- /usr/share/empty/fs/aufs/fstype.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/fstype.h 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/fstype.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,401 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_FSTYPE_H__ */
diff -urN /usr/share/empty/fs/aufs/hbl.h linux/fs/aufs/hbl.h
--- /usr/share/empty/fs/aufs/hbl.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/hbl.h 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/hbl.h 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2017-2020 Junjiro R. Okajima
++ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_HBL_H__ */
diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c
--- /usr/share/empty/fs/aufs/hfsnotify.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/hfsnotify.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/hfsnotify.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+};
diff -urN /usr/share/empty/fs/aufs/hfsplus.c linux/fs/aufs/hfsplus.c
--- /usr/share/empty/fs/aufs/hfsplus.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/hfsplus.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/hfsplus.c 2021-11-01 23:48:34.206359262 +0100
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2010-2020 Junjiro R. Okajima
++ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/hnotify.c linux/fs/aufs/hnotify.c
--- /usr/share/empty/fs/aufs/hnotify.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/hnotify.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/hnotify.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,715 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/iinfo.c linux/fs/aufs/iinfo.c
--- /usr/share/empty/fs/aufs/iinfo.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/iinfo.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/iinfo.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/inode.c linux/fs/aufs/inode.c
--- /usr/share/empty/fs/aufs/inode.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/inode.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,529 @@
++++ linux/fs/aufs/inode.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,531 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ return err;
+}
+
-+int au_test_h_perm(struct inode *h_inode, int mask)
++int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode,
++ int mask)
+{
+ if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID))
+ return 0;
-+ return inode_permission(h_inode, mask);
++ return inode_permission(h_userns, h_inode, mask);
+}
+
-+int au_test_h_perm_sio(struct inode *h_inode, int mask)
++int au_test_h_perm_sio(struct user_namespace *h_userns, 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);
++ return au_test_h_perm(h_userns, h_inode, mask);
+}
diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
--- /usr/share/empty/fs/aufs/inode.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/inode.h 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,698 @@
++++ linux/fs/aufs/inode.h 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,705 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+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);
++int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode,
++ int mask);
++int au_test_h_perm_sio(struct user_namespace *h_userns, 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)
+/* 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);
++int aufs_mknod(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, umode_t mode, dev_t dev);
++int aufs_symlink(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, const char *symname);
++int aufs_create(struct user_namespace *userns, 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_tmpfile(struct user_namespace *userns, 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);
++int aufs_mkdir(struct user_namespace *userns, 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);
+
+/* 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);
++int aufs_rename(struct user_namespace *userns,
++ struct inode *_src_dir, struct dentry *_src_dentry,
++ struct inode *_dst_dir, struct dentry *_dst_dentry,
++ unsigned int _flags);
+
+/* iinfo.c */
+struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex);
+
+#ifdef CONFIG_AUFS_XATTR
+/* xattr.c */
-+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
++int au_cpup_xattr(struct path *h_dst, struct path *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,
++AuStubInt0(au_cpup_xattr, struct path *h_dst, struct path *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);
++struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu);
++int aufs_set_acl(struct user_namespace *userns, struct inode *inode,
++ struct posix_acl *acl, int type);
+#endif
+
+#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
+#endif /* __AUFS_INODE_H__ */
diff -urN /usr/share/empty/fs/aufs/ioctl.c linux/fs/aufs/ioctl.c
--- /usr/share/empty/fs/aufs/ioctl.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/ioctl.c 2021-02-24 13:33:42.744347058 +0100
++++ linux/fs/aufs/ioctl.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif
diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c
--- /usr/share/empty/fs/aufs/i_op_add.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op_add.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,936 @@
++++ linux/fs/aufs/i_op_add.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,941 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ return err;
+}
+
-+int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
-+ dev_t dev)
++int aufs_mknod(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, umode_t mode, dev_t dev)
+{
+ struct simple_arg arg = {
+ .type = Mknod,
+ return add_simple(dir, dentry, &arg);
+}
+
-+int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
++int aufs_symlink(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, const char *symname)
+{
+ struct simple_arg arg = {
+ .type = Symlink,
+ return add_simple(dir, dentry, &arg);
+}
+
-+int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
-+ bool want_excl)
++int aufs_create(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, umode_t mode, bool want_excl)
+{
+ struct simple_arg arg = {
+ .type = Creat,
+ return add_simple(dir, dentry, &arg);
+}
+
-+int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
++int aufs_tmpfile(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, umode_t mode)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct dentry *parent, *h_parent, *h_dentry;
+ struct inode *h_dir, *inode;
+ struct vfsmount *h_mnt;
++ struct user_namespace *h_userns;
+ struct au_wr_dir_args wr_dir_args = {
+ .force_btgt = -1,
+ .flags = AuWrDir_TMPFILE
+ if (unlikely(err))
+ goto out_parent;
+
++ h_userns = mnt_user_ns(h_mnt);
+ h_parent = au_h_dptr(parent, bindex);
-+ h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0);
++ h_dentry = vfs_tmpfile(h_userns, h_parent, mode, /*open_flag*/0);
+ if (IS_ERR(h_dentry)) {
+ err = PTR_ERR(h_dentry);
+ goto out_mnt;
+ return err;
+}
+
-+int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
++int aufs_mkdir(struct user_namespace *userns, struct inode *dir,
++ struct dentry *dentry, umode_t mode)
+{
+ int err, rerr;
+ aufs_bindex_t bindex;
+}
diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
--- /usr/share/empty/fs/aufs/i_op.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,1502 @@
++++ linux/fs/aufs/i_op.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,1513 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+{
+ int err;
+ const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
++ struct user_namespace *h_userns;
+
+ err = -EPERM;
+ if (write_mask && IS_IMMUTABLE(h_inode))
+ * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.'
+ * in this case, generic_permission() returns -EOPNOTSUPP.
+ */
++ h_userns = mnt_user_ns(h_path->mnt);
+ 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);
++ err = generic_permission(h_userns, h_inode, mask);
+ if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode))
-+ err = h_inode->i_op->permission(h_inode, mask);
++ err = h_inode->i_op->permission(h_userns, h_inode,
++ mask);
+ AuTraceErr(err);
+ } else {
+ /* AuLabel(h_inode->permission); */
-+ err = h_inode->i_op->permission(h_inode, mask);
++ err = h_inode->i_op->permission(h_userns, h_inode, mask);
+ AuTraceErr(err);
+ }
+
+ return err;
+}
+
-+static int aufs_permission(struct inode *inode, int mask)
++static int aufs_permission(struct user_namespace *userns, struct inode *inode,
++ int mask)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ return err;
+}
+
-+static int aufs_setattr(struct dentry *dentry, struct iattr *ia)
++static int aufs_setattr(struct user_namespace *userns, struct dentry *dentry,
++ struct iattr *ia)
+{
+ int err;
+ struct inode *inode, *delegated;
+ struct super_block *sb;
+ struct file *file;
+ struct au_icpup_args *a;
++ struct user_namespace *h_userns;
+
+ inode = d_inode(dentry);
+ IMustLock(inode);
+
-+ err = setattr_prepare(dentry, ia);
++ err = setattr_prepare(userns, dentry, ia);
+ if (unlikely(err))
+ goto out;
+
+ * 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 && (ia->ia_valid & ATTR_MODE)) {
++ h_userns = mnt_user_ns(a->h_path.mnt);
++ err = vfsub_acl_chmod(h_userns, a->h_inode, ia->ia_mode);
++ }
+ if (!err)
+ au_cpup_attr_changeable(inode);
+
+ struct super_block *sb;
+ struct au_icpup_args *a;
+ struct inode *h_inode;
++ struct user_namespace *h_userns;
+
+ IMustLock(inode);
+
+ err = au_h_path_to_set_attr(dentry, a, &h_path);
+ if (unlikely(err))
+ goto out_di;
++ h_userns = mnt_user_ns(h_path.mnt);
+
+ 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,
++ err = vfsub_setxattr(h_userns, 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)
++ if (h_inode->i_op->set_acl) {
+ /* this will call posix_acl_update_mode */
-+ err = h_inode->i_op->set_acl(h_inode,
++ err = h_inode->i_op->set_acl(h_userns, h_inode,
+ arg->u.acl_set.acl,
+ arg->u.acl_set.type);
++ }
+ break;
+ }
+ if (!err)
+ return err;
+}
+
-+static int aufs_getattr(const struct path *path, struct kstat *st,
-+ u32 request, unsigned int query)
++static int aufs_getattr(struct user_namespace *userns, const struct path *path,
++ struct kstat *st, u32 request, unsigned int query)
+{
+ int err;
+ unsigned char positive;
+ goto out_di;
+
+out_fill:
-+ generic_fillattr(inode, st);
++ generic_fillattr(userns, inode, st);
+out_di:
+ di_read_unlock(dentry, AuLock_IR);
+out_si:
+};
diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c
--- /usr/share/empty/fs/aufs/i_op_del.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op_del.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,513 @@
++++ linux/fs/aufs/i_op_del.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,522 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ umode_t h_mode;
+ struct dentry *h_dentry, *h_latest;
+ struct inode *h_inode;
++ struct path h_ppath;
++ struct super_block *sb;
++ struct au_branch *br;
++ struct user_namespace *h_userns;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (d_really_is_positive(dentry)) {
+ * 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),
++ sb = dentry->d_sb;
++ br = au_sbr(sb, bindex);
++ h_userns = au_br_userns(br);
++ if (unlikely(!au_opt_test(au_mntflags(sb), DIRPERM1)
++ && au_test_h_perm(h_userns, d_inode(h_parent),
+ MAY_EXEC | MAY_WRITE)))
+ goto out;
+
-+ h_latest = au_sio_lkup_one(&dentry->d_name, h_parent);
++ h_ppath.dentry = h_parent;
++ h_ppath.mnt = au_br_mnt(br);
++ h_latest = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath);
+ err = -EIO;
+ if (IS_ERR(h_latest))
+ goto out;
+}
diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
--- /usr/share/empty/fs/aufs/i_op_ren.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op_ren.c 2021-02-24 13:33:42.744347058 +0100
-@@ -0,0 +1,1250 @@
++++ linux/fs/aufs/i_op_ren.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,1257 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+{
+ int rerr;
+ struct inode *delegated;
++ struct path h_ppath = {
++ .dentry = a->src_h_parent,
++ .mnt = a->h_path.mnt
++ };
+
-+ a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name,
-+ a->src_h_parent);
++ a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, &h_ppath);
+ rerr = PTR_ERR(a->h_path.dentry);
+ if (IS_ERR(a->h_path.dentry)) {
+ RevertFailure("lkup one %pd", a->src_dentry);
+{
+ int rerr;
+ struct inode *delegated;
++ struct path h_ppath = {
++ .dentry = a->dst_h_parent,
++ .mnt = a->h_path.mnt
++ };
+
-+ a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name,
-+ a->dst_h_parent);
++ a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, &h_ppath);
+ rerr = PTR_ERR(a->h_path.dentry);
+ if (IS_ERR(a->h_path.dentry)) {
+ RevertFailure("lkup one %pd", a->dst_dentry);
+
+/* ---------------------------------------------------------------------- */
+
-+int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry,
++int aufs_rename(struct user_namespace *userns,
++ struct inode *_src_dir, struct dentry *_src_dentry,
+ struct inode *_dst_dir, struct dentry *_dst_dentry,
+ unsigned int _flags)
+{
+}
diff -urN /usr/share/empty/fs/aufs/Kconfig linux/fs/aufs/Kconfig
--- /usr/share/empty/fs/aufs/Kconfig 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/Kconfig 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/Kconfig 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,199 @@
+# SPDX-License-Identifier: GPL-2.0
+config AUFS_FS
+endif
diff -urN /usr/share/empty/fs/aufs/lcnt.h linux/fs/aufs/lcnt.h
--- /usr/share/empty/fs/aufs/lcnt.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/lcnt.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/lcnt.h 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,186 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2018-2020 Junjiro R. Okajima
++ * Copyright (C) 2018-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_LCNT_H__ */
diff -urN /usr/share/empty/fs/aufs/loop.c linux/fs/aufs/loop.c
--- /usr/share/empty/fs/aufs/loop.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/loop.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/loop.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/loop.h linux/fs/aufs/loop.h
--- /usr/share/empty/fs/aufs/loop.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/loop.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/loop.h 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_LOOP_H__ */
diff -urN /usr/share/empty/fs/aufs/magic.mk linux/fs/aufs/magic.mk
--- /usr/share/empty/fs/aufs/magic.mk 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/magic.mk 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/magic.mk 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+
+endif
diff -urN /usr/share/empty/fs/aufs/Makefile linux/fs/aufs/Makefile
--- /usr/share/empty/fs/aufs/Makefile 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/Makefile 2021-02-24 13:33:42.741013619 +0100
++++ linux/fs/aufs/Makefile 2021-11-01 23:48:34.203025928 +0100
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0
+
+aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o
diff -urN /usr/share/empty/fs/aufs/module.c linux/fs/aufs/module.c
--- /usr/share/empty/fs/aufs/module.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/module.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/module.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+module_exit(aufs_exit);
diff -urN /usr/share/empty/fs/aufs/module.h linux/fs/aufs/module.h
--- /usr/share/empty/fs/aufs/module.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/module.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/module.h 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+static inline int au_kmidx_sub(size_t sz, size_t new_sz)
+{
+#ifndef CONFIG_SLOB
-+ return kmalloc_index(sz) - kmalloc_index(new_sz);
++ return __kmalloc_index(sz, false) - __kmalloc_index(new_sz, false);
+#else
+ return -1; /* SLOB is untested */
+#endif
+#endif /* __AUFS_MODULE_H__ */
diff -urN /usr/share/empty/fs/aufs/mvdown.c linux/fs/aufs/mvdown.c
--- /usr/share/empty/fs/aufs/mvdown.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/mvdown.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/mvdown.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,706 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2011-2020 Junjiro R. Okajima
++ * Copyright (C) 2011-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
--- /usr/share/empty/fs/aufs/opts.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/opts.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/opts.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,1880 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h
--- /usr/share/empty/fs/aufs/opts.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/opts.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/opts.h 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,225 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_OPTS_H__ */
diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c
--- /usr/share/empty/fs/aufs/plink.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/plink.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/plink.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,516 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+struct au_do_plink_lkup_args {
+ struct dentry **errp;
+ struct qstr *tgtname;
-+ struct dentry *h_parent;
-+ struct au_branch *br;
++ struct path *h_ppath;
+};
+
+static struct dentry *au_do_plink_lkup(struct qstr *tgtname,
-+ struct dentry *h_parent,
-+ struct au_branch *br)
++ struct path *h_ppath)
+{
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+
-+ h_inode = d_inode(h_parent);
++ h_inode = d_inode(h_ppath->dentry);
+ inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2);
-+ h_dentry = vfsub_lkup_one(tgtname, h_parent);
++ h_dentry = vfsub_lkup_one(tgtname, h_ppath);
+ 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);
++ *a->errp = au_do_plink_lkup(a->tgtname, a->h_ppath);
+}
+
+/* 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 dentry *h_dentry;
+ struct au_branch *br;
++ struct path h_ppath;
+ 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;
++ h_ppath.dentry = br->br_wbr->wbr_plink;
++ h_ppath.mnt = au_br_mnt(br);
+ 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
++ .h_ppath = &h_ppath
+ };
+
+ 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);
++ h_dentry = au_do_plink_lkup(&tgtname, &h_ppath);
+
+ 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)
++static int do_whplink(struct qstr *tgt, struct path *h_ppath,
++ struct dentry *h_dentry)
+{
+ int err;
-+ struct path h_path = {
-+ .mnt = au_br_mnt(br)
-+ };
++ struct path h_path;
+ struct inode *h_dir, *delegated;
+
-+ h_dir = d_inode(h_parent);
++ h_dir = d_inode(h_ppath->dentry);
+ inode_lock_nested(h_dir, AuLsc_I_CHILD2);
++ h_path.mnt = h_ppath->mnt;
+again:
-+ h_path.dentry = vfsub_lkup_one(tgt, h_parent);
++ h_path.dentry = vfsub_lkup_one(tgt, h_ppath);
+ err = PTR_ERR(h_path.dentry);
+ if (IS_ERR(h_path.dentry))
+ goto out;
+struct do_whplink_args {
+ int *errp;
+ struct qstr *tgt;
-+ struct dentry *h_parent;
++ struct path *h_ppath;
+ 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);
++ *a->errp = do_whplink(a->tgt, a->h_ppath, a->h_dentry);
+}
+
+static int whplink(struct dentry *h_dentry, struct inode *inode,
-+ aufs_bindex_t bindex, struct au_branch *br)
++ aufs_bindex_t bindex)
+{
+ int err, wkq_err;
++ struct au_branch *br;
+ struct au_wbr *wbr;
-+ struct dentry *h_parent;
++ struct path h_ppath;
+ 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;
++ br = au_sbr(inode->i_sb, bindex);
++ wbr = br->br_wbr;
++ h_ppath.dentry = wbr->wbr_plink;
++ h_ppath.mnt = au_br_mnt(br);
+ tgtname.len = plink_name(a, sizeof(a), inode, bindex);
+
+ /* always superio. */
+ struct do_whplink_args args = {
+ .errp = &err,
+ .tgt = &tgtname,
-+ .h_parent = h_parent,
-+ .h_dentry = h_dentry,
-+ .br = br
++ .h_ppath = &h_ppath,
++ .h_dentry = h_dentry
+ };
+ 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);
++ err = do_whplink(&tgtname, &h_ppath, h_dentry);
+
+ return err;
+}
+ if (cnt > AUFS_PLINK_WARN)
+ AuWarn1(msg ", %d\n", cnt);
+#undef msg
-+ err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex));
++ err = whplink(h_dentry, inode, bindex);
+ if (unlikely(err)) {
+ pr_warn("err %d, damaged pseudo link.\n", err);
+ au_hbl_del(&icntnr->plink, hbl);
+}
diff -urN /usr/share/empty/fs/aufs/poll.c linux/fs/aufs/poll.c
--- /usr/share/empty/fs/aufs/poll.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/poll.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/poll.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c
--- /usr/share/empty/fs/aufs/posix_acl.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/posix_acl.c 2021-02-24 13:33:42.747680497 +0100
-@@ -0,0 +1,105 @@
++++ linux/fs/aufs/posix_acl.c 2021-11-01 23:48:34.209692595 +0100
+@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2014-2020 Junjiro R. Okajima
++ * Copyright (C) 2014-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#include <linux/fs.h>
+#include "aufs.h"
+
-+struct posix_acl *aufs_get_acl(struct inode *inode, int type)
++struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu)
+{
+ struct posix_acl *acl;
+ int err;
+ struct inode *h_inode;
+ struct super_block *sb;
+
++ acl = ERR_PTR(-ECHILD);
++ if (rcu)
++ goto out;
++
+ 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;
++ goto unlock;
+
+ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ != (inode->i_mode & S_IFMT)))) {
+ err = au_busy_or_stale();
+ acl = ERR_PTR(err);
-+ goto out;
++ goto unlock;
+ }
+
+ /* always topmost only */
+ else
+ set_cached_acl(inode, type, acl);
+
-+out:
++unlock:
+ ii_read_unlock(inode);
+ si_read_unlock(sb);
+
++out:
+ AuTraceErrPtr(acl);
+ return acl;
+}
+
-+int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
++int aufs_set_acl(struct user_namespace *userns, struct inode *inode,
++ struct posix_acl *acl, int type)
+{
+ int err;
+ ssize_t ssz;
+}
diff -urN /usr/share/empty/fs/aufs/procfs.c linux/fs/aufs/procfs.c
--- /usr/share/empty/fs/aufs/procfs.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/procfs.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/procfs.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2010-2020 Junjiro R. Okajima
++ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/rdu.c linux/fs/aufs/rdu.c
--- /usr/share/empty/fs/aufs/rdu.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/rdu.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/rdu.c 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif
diff -urN /usr/share/empty/fs/aufs/rwsem.h linux/fs/aufs/rwsem.h
--- /usr/share/empty/fs/aufs/rwsem.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/rwsem.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/rwsem.h 2021-11-01 23:48:34.209692595 +0100
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_RWSEM_H__ */
diff -urN /usr/share/empty/fs/aufs/sbinfo.c linux/fs/aufs/sbinfo.c
--- /usr/share/empty/fs/aufs/sbinfo.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/sbinfo.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/sbinfo.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,314 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
--- /usr/share/empty/fs/aufs/super.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/super.c 2021-02-24 13:33:42.747680497 +0100
-@@ -0,0 +1,1047 @@
++++ linux/fs/aufs/super.c 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,1050 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+struct file_system_type aufs_fs_type = {
+ .name = AUFS_FSTYPE,
+ /* a race between rename and others */
-+ .fs_flags = FS_RENAME_DOES_D_MOVE,
++ .fs_flags = FS_RENAME_DOES_D_MOVE
++ /* untested */
++ /*| FS_ALLOW_IDMAP*/
++ ,
+ .mount = aufs_mount,
+ .kill_sb = aufs_kill_sb,
+ /* no need to __module_get() and module_put(). */
+};
diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h
--- /usr/share/empty/fs/aufs/super.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/super.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/super.h 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,587 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_SUPER_H__ */
diff -urN /usr/share/empty/fs/aufs/sysaufs.c linux/fs/aufs/sysaufs.c
--- /usr/share/empty/fs/aufs/sysaufs.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/sysaufs.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/sysaufs.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/sysaufs.h linux/fs/aufs/sysaufs.h
--- /usr/share/empty/fs/aufs/sysaufs.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/sysaufs.h 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/sysaufs.h 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __SYSAUFS_H__ */
diff -urN /usr/share/empty/fs/aufs/sysfs.c linux/fs/aufs/sysfs.c
--- /usr/share/empty/fs/aufs/sysfs.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/sysfs.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/sysfs.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,374 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/sysrq.c linux/fs/aufs/sysrq.c
--- /usr/share/empty/fs/aufs/sysrq.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/sysrq.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/sysrq.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/vdir.c linux/fs/aufs/vdir.c
--- /usr/share/empty/fs/aufs/vdir.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/vdir.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/vdir.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,896 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
--- /usr/share/empty/fs/aufs/vfsub.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/vfsub.c 2021-02-24 13:33:42.747680497 +0100
-@@ -0,0 +1,885 @@
++++ linux/fs/aufs/vfsub.c 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,919 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ struct kstat st;
+ struct super_block *h_sb;
+
++ /*
++ * Always needs h_path->mnt for LSM or FUSE branch.
++ */
++ AuDebugOn(!h_path->mnt);
++
+ /* 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 */
+}
+
+struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
-+ struct dentry *parent, int len)
++ struct path *ppath, int len)
+{
-+ struct path path = {
-+ .mnt = NULL
-+ };
++ struct path path;
+
-+ path.dentry = lookup_one_len_unlocked(name, parent, len);
++ path.dentry = lookup_one_len_unlocked(name, ppath->dentry, len);
+ if (IS_ERR(path.dentry))
+ goto out;
-+ if (d_is_positive(path.dentry))
++ if (d_is_positive(path.dentry)) {
++ path.mnt = ppath->mnt;
+ 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,
++struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath,
+ int len)
+{
-+ struct path path = {
-+ .mnt = NULL
-+ };
++ struct path path;
+
+ /* VFS checks it too, but by WARN_ON_ONCE() */
-+ IMustLock(d_inode(parent));
++ IMustLock(d_inode(ppath->dentry));
+
-+ path.dentry = lookup_one_len(name, parent, len);
++ path.dentry = lookup_one_len(name, ppath->dentry, len);
+ if (IS_ERR(path.dentry))
+ goto out;
-+ if (d_is_positive(path.dentry))
++ if (d_is_positive(path.dentry)) {
++ path.mnt = ppath->mnt;
+ vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
++ }
+
+out:
+ AuTraceErrPtr(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);
++ *a->errp = vfsub_lkup_one(a->name, a->ppath);
+}
+
+/* ---------------------------------------------------------------------- */
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_create(dir, path->dentry, mode, want_excl);
++ err = vfs_create(userns, dir, path->dentry, mode, want_excl);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_symlink(dir, path->dentry, symname);
++ err = vfs_symlink(userns, dir, path->dentry, symname);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_mknod(dir, path->dentry, mode, dev);
++ err = vfs_mknod(userns, dir, path->dentry, mode, dev);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_link(src_dentry, dir, path->dentry, delegated_inode);
++ err = vfs_link(src_dentry, userns, dir, path->dentry, delegated_inode);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ struct inode **delegated_inode, unsigned int flags)
+{
+ int err;
++ struct renamedata rd;
+ struct path tmp = {
+ .mnt = path->mnt
+ };
+ if (unlikely(err))
+ goto out;
+
++ rd.old_mnt_userns = mnt_user_ns(path->mnt);
++ rd.old_dir = src_dir;
++ rd.old_dentry = src_dentry;
++ rd.new_mnt_userns = rd.old_mnt_userns;
++ rd.new_dir = dir;
++ rd.new_dentry = path->dentry;
++ rd.delegated_inode = delegated_inode;
++ rd.flags = flags;
+ lockdep_off();
-+ err = vfs_rename(src_dir, src_dentry, dir, path->dentry,
-+ delegated_inode, flags);
++ err = vfs_rename(&rd);
+ lockdep_on();
+ if (!err) {
+ int did;
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_mkdir(dir, path->dentry, mode);
++ err = vfs_mkdir(userns, dir, path->dentry, mode);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+{
+ int err;
+ struct dentry *d;
++ struct user_namespace *userns;
+
+ IMustLock(dir);
+
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
++ userns = mnt_user_ns(path->mnt);
+
+ lockdep_off();
-+ err = vfs_rmdir(dir, path->dentry);
++ err = vfs_rmdir(userns, dir, path->dentry);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = {
+ int err;
+ struct inode *h_inode;
+ struct super_block *h_sb;
++ struct user_namespace *h_userns;
+
+ if (!h_file) {
+ err = vfsub_truncate(h_path, length);
+ 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);
++ err = security_path_truncate(h_path);
+ if (!err) {
++ h_userns = mnt_user_ns(h_path->mnt);
+ lockdep_off();
-+ err = do_truncate(h_path->dentry, length, attr, h_file);
++ err = do_truncate(h_userns, h_path->dentry, length, attr,
++ h_file);
+ lockdep_on();
+ }
+ lockdep_off();
+int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode)
+{
+ int err, do_sio, wkq_err;
++ struct user_namespace *userns;
+
-+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
++ userns = mnt_user_ns(path->mnt);
++ do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE);
+ if (!do_sio) {
+ lockdep_off();
+ err = vfsub_mkdir(dir, path, mode);
+int vfsub_sio_rmdir(struct inode *dir, struct path *path)
+{
+ int err, do_sio, wkq_err;
++ struct user_namespace *userns;
+
-+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
++ userns = mnt_user_ns(path->mnt);
++ do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE);
+ if (!do_sio) {
+ lockdep_off();
+ err = vfsub_rmdir(dir, path);
+{
+ struct notify_change_args *a = args;
+ struct inode *h_inode;
++ struct user_namespace *userns;
+
+ h_inode = d_inode(a->path->dentry);
+ IMustLock(h_inode);
+
+ *a->errp = -EPERM;
+ if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) {
++ userns = mnt_user_ns(a->path->mnt);
+ lockdep_off();
-+ *a->errp = notify_change(a->path->dentry, a->ia,
++ *a->errp = notify_change(userns, a->path->dentry, a->ia,
+ a->delegated_inode);
+ lockdep_on();
+ if (!*a->errp)
+ struct unlink_args *a = args;
+ struct dentry *d = a->path->dentry;
+ struct inode *h_inode;
++ struct user_namespace *userns;
+ const int stop_sillyrename = (au_test_nfs(d->d_sb)
+ && au_dcount(d) == 1);
+
+ ihold(h_inode);
+ }
+
++ userns = mnt_user_ns(a->path->mnt);
+ lockdep_off();
-+ *a->errp = vfs_unlink(a->dir, d, a->delegated_inode);
++ *a->errp = vfs_unlink(userns, a->dir, d, a->delegated_inode);
+ lockdep_on();
+ if (!*a->errp) {
+ struct path tmp = {
+}
diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h
--- /usr/share/empty/fs/aufs/vfsub.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/vfsub.h 2021-02-24 13:33:42.747680497 +0100
-@@ -0,0 +1,354 @@
++++ linux/fs/aufs/vfsub.h 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,358 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+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,
++ struct path *ppath, int len);
++struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath,
+ int len);
+
+struct vfsub_lkup_one_args {
+ struct dentry **errp;
+ struct qstr *name;
-+ struct dentry *parent;
++ struct path *ppath;
+};
+
+static inline struct dentry *vfsub_lkup_one(struct qstr *name,
-+ struct dentry *parent)
++ struct path *ppath)
+{
-+ return vfsub_lookup_one_len(name->name, parent, name->len);
++ return vfsub_lookup_one_len(name->name, ppath, name->len);
+}
+
+void vfsub_call_lkup_one(void *args);
+}
+
+#ifdef CONFIG_FS_POSIX_ACL
-+static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode)
++static inline int vfsub_acl_chmod(struct user_namespace *h_userns,
++ struct inode *h_inode, umode_t h_mode)
+{
+ int err;
+
-+ err = posix_acl_chmod(h_inode, h_mode);
++ err = posix_acl_chmod(h_userns, h_inode, h_mode);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ return err;
+}
+#else
-+AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode);
++AuStubInt0(vfsub_acl_chmod, struct user_namespace *h_userns,
++ struct inode *h_inode, umode_t h_mode);
+#endif
+
+long vfsub_splice_to(struct file *in, loff_t *ppos,
+
+/* ---------------------------------------------------------------------- */
+
-+static inline int vfsub_setxattr(struct dentry *dentry, const char *name,
++static inline int vfsub_setxattr(struct user_namespace *userns,
++ 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);
++ err = vfs_setxattr(userns, dentry, name, value, size, flags);
+ lockdep_on();
+
+ return err;
+}
+
-+static inline int vfsub_removexattr(struct dentry *dentry, const char *name)
++static inline int vfsub_removexattr(struct user_namespace *userns,
++ struct dentry *dentry, const char *name)
+{
+ int err;
+
+ lockdep_off();
-+ err = vfs_removexattr(dentry, name);
++ err = vfs_removexattr(userns, dentry, name);
+ lockdep_on();
+
+ return err;
+#endif /* __AUFS_VFSUB_H__ */
diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c
--- /usr/share/empty/fs/aufs/wbr_policy.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/wbr_policy.c 2021-02-24 13:33:42.747680497 +0100
++++ linux/fs/aufs/wbr_policy.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,830 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+};
diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c
--- /usr/share/empty/fs/aufs/whout.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/whout.c 2021-02-24 13:33:42.751013936 +0100
-@@ -0,0 +1,1062 @@
++++ linux/fs/aufs/whout.c 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,1072 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+/* ---------------------------------------------------------------------- */
+
+/*
-+ * test if the @wh_name exists under @h_parent.
++ * test if the @wh_name exists under @h_ppath.
+ * @try_sio specifies the necessary of super-io.
+ */
-+int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio)
++int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath,
++ 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);
++ wh_dentry = vfsub_lkup_one(wh_name, h_ppath);
+ else
-+ wh_dentry = au_sio_lkup_one(wh_name, h_parent);
++ wh_dentry = au_sio_lkup_one(h_userns, wh_name, h_ppath);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry)) {
+ if (err == -ENAMETOOLONG)
+}
+
+/*
-+ * test if the @h_dentry sets opaque or not.
++ * test if the @h_path->dentry sets opaque or not.
+ */
-+int au_diropq_test(struct dentry *h_dentry)
++int au_diropq_test(struct user_namespace *h_userns, struct path *h_path)
+{
+ 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));
++ h_dir = d_inode(h_path->dentry);
++ err = au_wh_test(h_userns, h_path, &diropq_name,
++ au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC));
+ return err;
+}
+
+ /* strict atomic_t is unnecessary here */
+ static unsigned short cnt;
+ struct qstr qs;
++ struct path h_ppath;
++ struct user_namespace *h_userns;
+
+ BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN);
+
+ *p++ = '.';
+ AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN);
+
++ h_ppath.dentry = h_parent;
++ h_ppath.mnt = au_br_mnt(br);
++ h_userns = au_br_userns(br);
+ 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);
++ dentry = au_sio_lkup_one(h_userns, &qs, &h_ppath);
+ if (IS_ERR(dentry) || d_is_negative(dentry))
+ goto out_name;
+ dput(dentry);
+ return err;
+}
+
-+static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh,
-+ struct au_branch *br)
++static int unlink_wh_name(struct path *h_ppath, struct qstr *wh)
+{
+ int err;
-+ struct path h_path = {
-+ .mnt = au_br_mnt(br)
-+ };
++ struct path h_path;
+
+ err = 0;
-+ h_path.dentry = vfsub_lkup_one(wh, h_parent);
++ h_path.dentry = vfsub_lkup_one(wh, h_ppath);
+ 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);
++ if (d_is_reg(h_path.dentry)) {
++ h_path.mnt = h_ppath->mnt;
++ err = do_unlink_wh(d_inode(h_ppath->dentry), &h_path);
++ }
+ dput(h_path.dentry);
+ }
+
+static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int flags)
+{
-+ struct dentry *opq_dentry, *h_dentry;
++ struct dentry *opq_dentry;
+ struct super_block *sb;
+ struct au_branch *br;
++ struct path h_path;
+ 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);
++ h_path.dentry = au_h_dptr(dentry, bindex);
++ h_path.mnt = au_br_mnt(br);
++ opq_dentry = vfsub_lkup_one(&diropq_name, &h_path);
+ if (IS_ERR(opq_dentry))
+ goto out;
+
+ 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);
++ h_path.dentry = opq_dentry;
++ err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &h_path);
+ if (!err)
+ au_set_dbdiropq(dentry, -1);
+ }
+ unsigned int flags)
+{
+ struct dentry *diropq, *h_dentry;
++ struct user_namespace *h_userns;
+
++ h_userns = au_sbr_userns(dentry->d_sb, bindex);
+ h_dentry = au_h_dptr(dentry, bindex);
-+ if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE))
++ if (!au_test_h_perm_sio(h_userns, d_inode(h_dentry),
++ MAY_EXEC | MAY_WRITE))
+ diropq = do_diropq(dentry, bindex, flags);
+ else {
+ int wkq_err;
+ int err;
+ struct qstr wh_name;
+ struct dentry *wh_dentry;
++ struct path h_path;
+
+ 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);
++ h_path.dentry = h_parent;
++ h_path.mnt = au_br_mnt(br);
++ wh_dentry = vfsub_lkup_one(&wh_name, &h_path);
+ au_kfree_try_rcu(wh_name.name);
+ }
+ 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)
++static int del_wh_children(struct path *h_path, struct au_nhash *whlist,
++ aufs_bindex_t bindex)
+{
+ int err;
+ unsigned long ul, n;
+ 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);
++ err = unlink_wh_name(h_path, &wh_name);
+ if (!err)
+ continue;
+ break;
+
+struct del_wh_children_args {
+ int *errp;
-+ struct dentry *h_dentry;
++ struct path *h_path;
+ 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);
++ *a->errp = del_wh_children(a->h_path, a->whlist, a->bindex);
+}
+
+/* ---------------------------------------------------------------------- */
+{
+ int err;
+ unsigned int h_nlink;
-+ struct path h_tmp;
++ struct path wh_path;
+ struct inode *wh_inode, *h_dir;
+ struct au_branch *br;
++ struct user_namespace *h_userns;
+
+ h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
+ IMustLock(h_dir);
+
+ br = au_sbr(dir->i_sb, bindex);
++ wh_path.dentry = wh_dentry;
++ wh_path.mnt = au_br_mnt(br);
++ h_userns = au_br_userns(br);
+ 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);
++ if (!au_test_h_perm_sio(h_userns, wh_inode, MAY_EXEC | MAY_WRITE))
++ err = del_wh_children(&wh_path, whlist, bindex);
+ else {
+ int wkq_err;
+ struct del_wh_children_args args = {
+ .errp = &err,
-+ .h_dentry = wh_dentry,
++ .h_path = &wh_path,
+ .whlist = whlist,
-+ .bindex = bindex,
-+ .br = br
++ .bindex = bindex
+ };
+
+ wkq_err = au_wkq_wait(call_del_wh_children, &args);
+ 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);
++ err = vfsub_rmdir(h_dir, &wh_path);
+ /* some fs doesn't change the parent nlink in some cases */
+ h_nlink -= h_dir->i_nlink;
+ }
+}
diff -urN /usr/share/empty/fs/aufs/whout.h linux/fs/aufs/whout.h
--- /usr/share/empty/fs/aufs/whout.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/whout.h 2021-02-24 13:33:42.751013936 +0100
-@@ -0,0 +1,86 @@
++++ linux/fs/aufs/whout.h 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+
+/* 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);
++int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath,
++ struct qstr *wh_name, int try_sio);
++int au_diropq_test(struct user_namespace *h_userns, struct path *h_path);
+struct au_branch;
+struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
+ struct qstr *prefix);
+#endif /* __AUFS_WHOUT_H__ */
diff -urN /usr/share/empty/fs/aufs/wkq.c linux/fs/aufs/wkq.c
--- /usr/share/empty/fs/aufs/wkq.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/wkq.c 2021-02-24 13:33:42.751013936 +0100
++++ linux/fs/aufs/wkq.c 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,372 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+}
diff -urN /usr/share/empty/fs/aufs/wkq.h linux/fs/aufs/wkq.h
--- /usr/share/empty/fs/aufs/wkq.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/wkq.h 2021-02-24 13:33:42.751013936 +0100
++++ linux/fs/aufs/wkq.h 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#endif /* __AUFS_WKQ_H__ */
diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c
--- /usr/share/empty/fs/aufs/xattr.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/xattr.c 2021-02-24 13:33:42.751013936 +0100
-@@ -0,0 +1,356 @@
++++ linux/fs/aufs/xattr.c 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2014-2020 Junjiro R. Okajima
++ * Copyright (C) 2014-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+
+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,
++static int au_do_cpup_xattr(struct path *h_dst, struct path *h_src,
+ char *name, char **buf, unsigned int ignore_flags,
+ unsigned int verbose)
+{
+ int err;
+ ssize_t ssz;
+ struct inode *h_idst;
++ struct dentry *h_dst_dentry, *h_src_dentry;
++ struct user_namespace *h_dst_userns, *h_src_userns;
+
-+ ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS);
++ h_src_userns = mnt_user_ns(h_src->mnt);
++ h_src_dentry = h_src->dentry;
++ ssz = vfs_getxattr_alloc(h_src_userns, h_src_dentry, 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))
++ || (au_test_nfs_noacl(d_inode(h_src_dentry))
+ && (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS)
+ || !strcmp(name,
+ XATTR_NAME_POSIX_ACL_DEFAULT))))
+ }
+
+ /* unlock it temporary */
-+ h_idst = d_inode(h_dst);
++ h_dst_userns = mnt_user_ns(h_dst->mnt);
++ h_dst_dentry = h_dst->dentry;
++ h_idst = d_inode(h_dst_dentry);
+ inode_unlock(h_idst);
-+ err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0);
++ err = vfsub_setxattr(h_dst_userns, h_dst_dentry, name, *buf, ssz,
++ /*flags*/0);
+ inode_lock_nested(h_idst, AuLsc_I_CHILD2);
+ if (unlikely(err)) {
+ if (verbose || au_debug_test())
+ return err;
+}
+
-+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
++int au_cpup_xattr(struct path *h_dst, struct path *h_src, int ignore_flags,
+ unsigned int verbose)
+{
+ int err, unlocked, acl_access, acl_default;
+ ssize_t ssz;
++ struct dentry *h_dst_dentry, *h_src_dentry;
+ 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);
++ h_dst_dentry = h_dst->dentry;
++ h_idst = d_inode(h_dst_dentry);
++ h_src_dentry = h_src->dentry;
++ h_isrc = d_inode(h_src_dentry);
+ 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);
++ ssz = vfs_listxattr(h_src_dentry, NULL, 0);
+ err = ssz;
+ if (unlikely(err < 0)) {
+ AuTraceErr(err);
+ o = p;
+ if (unlikely(!p))
+ goto out;
-+ err = vfs_listxattr(h_src, p, ssz);
++ err = vfs_listxattr(h_src_dentry, p, ssz);
+ }
+ inode_unlock_shared(h_isrc);
+ unlocked = 1;
+ break;
+ case AU_XATTR_GET:
+ AuDebugOn(d_is_negative(h_path.dentry));
-+ err = vfs_getxattr(h_path.dentry,
++ err = vfs_getxattr(mnt_user_ns(h_path.mnt), h_path.dentry,
+ arg->u.get.name, arg->u.get.value,
+ arg->u.get.size);
+ break;
+}
+
+static int au_xattr_set(const struct xattr_handler *handler,
++ struct user_namespace *userns,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value, size_t size,
+ int flags)
+}
diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c
--- /usr/share/empty/fs/aufs/xino.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/xino.c 2021-02-24 13:33:42.751013936 +0100
-@@ -0,0 +1,1925 @@
++++ linux/fs/aufs/xino.c 2021-11-01 23:48:34.213025928 +0100
+@@ -0,0 +1,1926 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ struct file *copy_src)
+{
+ struct file *file;
-+ struct dentry *dentry, *parent;
++ struct dentry *dentry;
+ struct inode *dir, *delegated;
+ struct qstr *name;
-+ struct path path;
++ struct path ppath, 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);
++ ppath.dentry = dentry->d_parent; /* dir inode is locked */
++ ppath.mnt = base->mnt;
++ dir = d_inode(ppath.dentry);
+ IMustLock(dir);
+
+ name = &dentry->d_name;
-+ path.dentry = vfsub_lookup_one_len(name->name, parent, name->len);
++ path.dentry = vfsub_lookup_one_len(name->name, &ppath, name->len);
+ if (IS_ERR(path.dentry)) {
+ file = (void *)path.dentry;
+ pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry));
+ }
+
+ /* no need to mnt_want_write() since we call dentry_open() later */
-+ err = vfs_create(dir, path.dentry, 0666, NULL);
++ err = vfs_create(mnt_user_ns(base->mnt), dir, path.dentry, 0666, NULL);
+ if (unlikely(err)) {
+ file = ERR_PTR(err);
+ pr_err("%pd create err %d\n", dentry, err);
+}
diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/linux/aufs_type.h
--- /usr/share/empty/include/uapi/linux/aufs_type.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux/include/uapi/linux/aufs_type.h 2021-02-24 13:33:42.751013936 +0100
++++ linux/include/uapi/linux/aufs_type.h 2021-11-01 23:48:34.213025928 +0100
@@ -0,0 +1,452 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
-+ * Copyright (C) 2005-2020 Junjiro R. Okajima
++ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+#include <limits.h>
+#endif /* __KERNEL__ */
+
-+#define AUFS_VERSION "5.11-20210222"
++#define AUFS_VERSION "5.x-rcN-20211018"
+
+/* todo? move this to linux-2.6.19/include/magic.h */
+#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
+
+#endif /* __AUFS_TYPE_H__ */
SPDX-License-Identifier: GPL-2.0
-aufs5.11 loopback patch
+aufs5.x-rcN loopback patch
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
-index 39d539df0349d..4109efe2f6a3a 100644
+index a62b132cbd551..79cf20555c2b1 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
-@@ -646,6 +646,15 @@ static inline void loop_update_dio(struct loop_device *lo)
+@@ -685,6 +685,15 @@ static inline void loop_update_dio(struct loop_device *lo)
lo->use_dio);
}
+ return f;
+}
+
- static void loop_reread_partitions(struct loop_device *lo,
- struct block_device *bdev)
+ static void loop_reread_partitions(struct loop_device *lo)
{
-@@ -701,6 +710,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
- unsigned int arg)
+ int rc;
+@@ -742,6 +751,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
{
- struct file *file = NULL, *old_file;
-+ struct file *f, *virt_file = NULL, *old_virt_file;
- int error;
- bool partscan;
-
-@@ -720,12 +730,19 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
- file = fget(arg);
- if (!file)
+ 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;
+@@ -761,11 +771,19 @@ 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;
error = -EINVAL;
-@@ -737,6 +754,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
+@@ -778,6 +796,7 @@ 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->old_gfp_mask = mapping_gfp_mask(file->f_mapping);
mapping_set_gfp_mask(file->f_mapping,
lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
-@@ -750,6 +768,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
+@@ -800,6 +819,8 @@ 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, bdev);
+ loop_reread_partitions(lo);
return 0;
-@@ -758,6 +778,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
- mutex_unlock(&lo->lo_mutex);
- if (file)
- fput(file);
+@@ -808,6 +829,8 @@ 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);
return error;
}
-@@ -1084,7 +1106,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
- struct block_device *bdev,
+@@ -1208,6 +1231,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
const struct loop_config *config)
{
-- struct file *file;
-+ struct file *file, *f, *virt_file = NULL;
- struct inode *inode;
+ struct file *file = fget(config->fd);
++ struct file *f, *virt_file = NULL;
+ struct inode *inode;
struct address_space *mapping;
- int error;
-@@ -1099,6 +1121,12 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
- file = fget(config->fd);
- if (!file)
- goto out;
+ int error;
+@@ -1223,6 +1247,13 @@ static int loop_configure(struct loop_device *lo, fmode_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
-@@ -1153,6 +1181,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
+ * here to avoid changing device under exclusive owner.
+@@ -1288,6 +1319,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO;
lo->lo_device = bdev;
lo->lo_backing_file = file;
lo->old_gfp_mask = mapping_gfp_mask(mapping);
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
-@@ -1203,6 +1232,8 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
+@@ -1338,6 +1370,8 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
bd_abort_claiming(bdev, loop_configure);
out_putf:
fput(file);
+ if (virt_file)
+ fput(virt_file);
- out:
/* This is safe: open() is still holding a reference. */
module_put(THIS_MODULE);
-@@ -1212,6 +1243,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
+ return error;
+@@ -1346,6 +1380,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
static int __loop_clr_fd(struct loop_device *lo, bool release)
{
struct file *filp = NULL;
gfp_t gfp = lo->old_gfp_mask;
struct block_device *bdev = lo->lo_device;
int err = 0;
-@@ -1235,6 +1267,7 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
+@@ -1397,6 +1432,7 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
spin_lock_irq(&lo->lo_lock);
lo->lo_backing_file = NULL;
spin_unlock_irq(&lo->lo_lock);
loop_release_xfer(lo);
-@@ -1317,6 +1350,8 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
+@@ -1477,6 +1513,8 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
*/
if (filp)
fput(filp);
}
diff --git a/drivers/block/loop.h b/drivers/block/loop.h
-index af75a5ee40944..1d847cb194ff6 100644
+index 04c88dd6eabd6..0ff3ba22ee170 100644
--- a/drivers/block/loop.h
+++ b/drivers/block/loop.h
@@ -46,7 +46,7 @@ struct loop_device {
void *key_data;
diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c
-index 5ef279a59bb14..6447c37f98756 100644
+index 99ceca1440449..e49dfe8550329 100644
--- a/fs/aufs/f_op.c
+++ b/fs/aufs/f_op.c
@@ -304,7 +304,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
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 a8b63acc62045..9d97c3af5686a 100644
+index 74347bd75b380..5ef888a1d53f4 100644
--- a/fs/aufs/loop.c
+++ b/fs/aufs/loop.c
@@ -133,3 +133,19 @@ void au_loopback_fin(void)
+ return f;
+}
diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h
-index 94f4f80ae33bf..ca1194354aff4 100644
+index 7293bee427f96..3345c098d0d47 100644
--- a/fs/aufs/loop.h
+++ b/fs/aufs/loop.h
@@ -26,6 +26,8 @@ void au_warn_loopback(struct super_block *h_sb);
#endif /* __KERNEL__ */
diff --git a/fs/aufs/super.c b/fs/aufs/super.c
-index 589dd01220201..801e0a7faec59 100644
+index ae38857541533..af32f0960e595 100644
--- a/fs/aufs/super.c
+++ b/fs/aufs/super.c
@@ -844,7 +844,10 @@ static const struct super_operations aufs_sop = {
/* ---------------------------------------------------------------------- */
diff --git a/include/linux/fs.h b/include/linux/fs.h
-index 91f3fbe5b57ff..ad1b2e44d538b 100644
+index 376ddf1965aa2..adb8c854de599 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
-@@ -1965,6 +1965,10 @@ struct super_operations {
+@@ -2226,6 +2226,10 @@ struct super_operations {
struct shrink_control *);
long (*free_cached_objects)(struct super_block *,
struct shrink_control *);
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