[packages/kernel/LINUX_4_1] - rel 2; fix build with gcc 7; update aufs4
arekm
arekm at pld-linux.org
Wed Sep 13 13:09:18 CEST 2017
commit 98a46a8c9ef0a8dd1e294bf7d5b96fb2f995b403
Author: Arkadiusz Miśkiewicz <arekm at maven.pl>
Date: Wed Sep 13 13:09:06 2017 +0200
- rel 2; fix build with gcc 7; update aufs4
kernel-aufs4.patch | 4251 ++++++++++++++++++++++++++--------------------
kernel-small_fixes.patch | 121 ++
kernel.spec | 5 +-
3 files changed, 2518 insertions(+), 1859 deletions(-)
---
diff --git a/kernel.spec b/kernel.spec
index ede6cf2d..573076e6 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -71,7 +71,7 @@
%define have_pcmcia 0
%endif
-%define rel 2
+%define rel 3
%define basever 4.1
%define postver .43
@@ -204,8 +204,7 @@ Patch101: kernel-vserver-fixes.patch
# cat aufs4-kbuild.patch aufs4-base.patch aufs4-mmap.patch aufs4-standalone.patch > ~/rpm/packages/kernel/kernel-aufs4.patch
# mkdir linux
# cp -a Documentation fs include linux
-# diff -urN /usr/share/empty linux >> ~/rpm/packages/kernel/kernel-aufs4.patch
-# drop hunk at the end of patch (hunk is patching include/linux/Kbuild with single line change)
+# diff -urN /usr/share/empty linux | filterdiff -x linux/include/uapi/linux/Kbuild >> ~/rpm/packages/kernel/kernel-aufs4.patch
# cat aufs4-loopback.patch >> ~/rpm/packages/kernel/kernel-aufs4.patch
#
Patch145: kernel-aufs4.patch
diff --git a/kernel-aufs4.patch b/kernel-aufs4.patch
index 48b25432..3005c823 100644
--- a/kernel-aufs4.patch
+++ b/kernel-aufs4.patch
@@ -1,4 +1,4 @@
-aufs4.1 kbuild patch
+aufs4.1.13+ kbuild patch
diff --git a/fs/Kconfig b/fs/Kconfig
index 011f433..b1083f6 100644
@@ -33,7 +33,7 @@ index 1a0006a..ddad01a 100644
header-y += auto_fs4.h
header-y += auto_fs.h
header-y += auxvec.h
-aufs4.1 base patch
+aufs4.1.13+ base patch
diff --git a/MAINTAINERS b/MAINTAINERS
index d8afd29..feac5ea 100644
@@ -60,10 +60,10 @@ index d8afd29..feac5ea 100644
M: Miguel Ojeda Sandonis <miguel.ojeda.sandonis at gmail.com>
W: http://miguelojeda.es/auxdisplay.htm
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
-index d7173cb..0160952 100644
+index cef6fa8..20fc2be 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
-@@ -540,6 +540,24 @@ static inline int is_loop_device(struct file *file)
+@@ -538,6 +538,24 @@ static inline int is_loop_device(struct file *file)
return i && S_ISBLK(i->i_mode) && MAJOR(i->i_rdev) == LOOP_MAJOR;
}
@@ -83,16 +83,16 @@ index d7173cb..0160952 100644
+ }
+ return ret;
+}
-+EXPORT_SYMBOL(loop_backing_file);
++EXPORT_SYMBOL_GPL(loop_backing_file);
+
/* loop sysfs attributes */
static ssize_t loop_attr_show(struct device *dev, char *page,
diff --git a/fs/dcache.c b/fs/dcache.c
-index 37b5afd..bc261e2 100644
+index 0046ab7..23bdfa1 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -1164,7 +1164,7 @@ enum d_walk_ret {
+@@ -1167,7 +1167,7 @@ enum d_walk_ret {
*
* The @enter() and @finish() callbacks are called with d_lock held.
*/
@@ -101,6 +101,41 @@ index 37b5afd..bc261e2 100644
enum d_walk_ret (*enter)(void *, struct dentry *),
void (*finish)(void *))
{
+diff --git a/fs/fcntl.c b/fs/fcntl.c
+index ee85cd4..dacbf71 100644
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -29,7 +29,7 @@
+
+ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
+
+-static int setfl(int fd, struct file * filp, unsigned long arg)
++int setfl(int fd, struct file * filp, unsigned long arg)
+ {
+ struct inode * inode = file_inode(filp);
+ int error = 0;
+@@ -59,6 +59,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
+
+ if (filp->f_op->check_flags)
+ error = filp->f_op->check_flags(arg);
++ if (!error && filp->f_op->setfl)
++ error = filp->f_op->setfl(filp, arg);
+ if (error)
+ return error;
+
+diff --git a/fs/inode.c b/fs/inode.c
+index 6e342ca..a3b268c 100644
+--- a/fs/inode.c
++++ b/fs/inode.c
+@@ -1566,7 +1566,7 @@ EXPORT_SYMBOL(generic_update_time);
+ * This does the actual work of updating an inodes time or version. Must have
+ * had called mnt_want_write() before calling this.
+ */
+-static int update_time(struct inode *inode, struct timespec *time, int flags)
++int update_time(struct inode *inode, struct timespec *time, int flags)
+ {
+ int (*update_time)(struct inode *, struct timespec *, int);
+
diff --git a/fs/read_write.c b/fs/read_write.c
index 819ef3f..fd0414e 100644
--- a/fs/read_write.c
@@ -162,6 +197,19 @@ index bfe62ae..fa5eee5 100644
{
ssize_t (*splice_read)(struct file *, loff_t *,
struct pipe_inode_info *, size_t, unsigned int);
+diff --git a/fs/sync.c b/fs/sync.c
+index fbc98ee..b8a9541a 100644
+--- a/fs/sync.c
++++ b/fs/sync.c
+@@ -27,7 +27,7 @@
+ * wait == 1 case since in that case write_inode() functions do
+ * sync_dirty_buffer() and thus effectively write one block at a time.
+ */
+-static int __sync_filesystem(struct super_block *sb, int wait)
++int __sync_filesystem(struct super_block *sb, int wait)
+ {
+ if (wait)
+ sync_inodes_sb(sb);
diff --git a/include/linux/file.h b/include/linux/file.h
index f87d308..9a290b3 100644
--- a/include/linux/file.h
@@ -175,10 +223,26 @@ index f87d308..9a290b3 100644
static inline void fput_light(struct file *file, int fput_needed)
{
diff --git a/include/linux/fs.h b/include/linux/fs.h
-index 35ec87e..3229f97 100644
+index fdc369f..3185e76 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
-@@ -1649,6 +1649,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
+@@ -1229,6 +1229,7 @@ extern void fasync_free(struct fasync_struct *);
+ /* can be called from interrupts */
+ extern void kill_fasync(struct fasync_struct **, int, int);
+
++extern int setfl(int fd, struct file * filp, unsigned long arg);
+ extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
+ extern void f_setown(struct file *filp, unsigned long arg, int force);
+ extern void f_delown(struct file *filp);
+@@ -1608,6 +1609,7 @@ struct file_operations {
+ ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
+ unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+ int (*check_flags)(int);
++ int (*setfl)(struct file *, unsigned long);
+ int (*flock) (struct file *, int, struct file_lock *);
+ ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+ ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
+@@ -1663,6 +1665,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
struct iovec *fast_pointer,
struct iovec **ret_pointer);
@@ -191,6 +255,22 @@ index 35ec87e..3229f97 100644
extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t __vfs_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
+@@ -2005,6 +2013,7 @@ extern int current_umask(void);
+ extern void ihold(struct inode * inode);
+ extern void iput(struct inode *);
+ extern int generic_update_time(struct inode *, struct timespec *, int);
++extern int update_time(struct inode *, struct timespec *, int);
+
+ /* /sys/fs */
+ extern struct kobject *fs_kobj;
+@@ -2274,6 +2283,7 @@ static inline int sb_is_blkdev_sb(struct super_block *sb)
+ return 0;
+ }
+ #endif
++extern int __sync_filesystem(struct super_block *, int);
+ extern int sync_filesystem(struct super_block *);
+ extern const struct file_operations def_blk_fops;
+ extern const struct file_operations def_chr_fops;
diff --git a/include/linux/splice.h b/include/linux/splice.h
index da2751d..2e0fca6 100644
--- a/include/linux/splice.h
@@ -206,7 +286,7 @@ index da2751d..2e0fca6 100644
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
#endif
-aufs4.1 mmap patch
+aufs4.1.13+ mmap patch
diff --git a/fs/buffer.c b/fs/buffer.c
index c7a5602..8c50a22 100644
@@ -292,10 +372,10 @@ index 599ec2e..1740207 100644
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 0755b9f..2ee5500 100644
+index b208558..bda1930 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
-@@ -1172,6 +1172,28 @@ static inline int fixup_user_fault(struct task_struct *tsk,
+@@ -1200,6 +1200,28 @@ static inline int fixup_user_fault(struct task_struct *tsk,
}
#endif
@@ -325,10 +405,10 @@ index 0755b9f..2ee5500 100644
extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
void *buf, int len, int write);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
-index 8d37e26..ce89d4c 100644
+index c0c6b33..e65090c 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
-@@ -241,6 +241,7 @@ struct vm_region {
+@@ -232,6 +232,7 @@ 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 */
@@ -336,7 +416,7 @@ index 8d37e26..ce89d4c 100644
int vm_usage; /* region usage count (access under nommu_region_sem) */
bool vm_icache_flushed : 1; /* true if the icache has been flushed for
-@@ -305,6 +306,7 @@ struct vm_area_struct {
+@@ -296,6 +297,7 @@ struct vm_area_struct {
unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
units, *not* PAGE_CACHE_SIZE */
struct file * vm_file; /* File we map to (can be NULL). */
@@ -345,7 +425,7 @@ index 8d37e26..ce89d4c 100644
#ifndef CONFIG_MMU
diff --git a/kernel/fork.c b/kernel/fork.c
-index 03c1eaa..7e215ba 100644
+index 8209fa2..7c655e8 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -456,7 +456,7 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
@@ -371,7 +451,7 @@ index 98c4eae..3f0c9b9 100644
obj-y += init-mm.o
diff --git a/mm/filemap.c b/mm/filemap.c
-index 6bf5e42..a863d0f 100644
+index 1ffef05..13a1981 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2062,7 +2062,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
@@ -384,7 +464,7 @@ index 6bf5e42..a863d0f 100644
if (page->mapping != inode->i_mapping) {
unlock_page(page);
diff --git a/mm/memory.c b/mm/memory.c
-index 22e037e..62096a2 100644
+index 2a9e098..2a8d5ec 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2034,7 +2034,7 @@ static inline int wp_page_reuse(struct mm_struct *mm,
@@ -397,7 +477,7 @@ index 22e037e..62096a2 100644
return VM_FAULT_WRITE;
diff --git a/mm/mmap.c b/mm/mmap.c
-index bb50cac..1ab5e596 100644
+index bb50cac..9019a83 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -274,7 +274,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
@@ -446,28 +526,45 @@ index bb50cac..1ab5e596 100644
unlink_anon_vmas(new);
out_free_mpol:
mpol_put(vma_policy(new));
-@@ -2635,7 +2635,6 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+@@ -2635,7 +2635,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
struct vm_area_struct *vma;
unsigned long populate = 0;
unsigned long ret = -EINVAL;
- struct file *file;
++ struct file *file, *prfile;
pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. "
"See Documentation/vm/remap_file_pages.txt.\n",
-@@ -2679,10 +2678,10 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+@@ -2679,10 +2679,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
munlock_vma_pages_range(vma, start, start + size);
}
- file = get_file(vma->vm_file);
+ vma_get_file(vma);
++ file = vma->vm_file;
++ prfile = vma->vm_prfile;
ret = do_mmap_pgoff(vma->vm_file, start, size,
prot, flags, pgoff, &populate);
-- fput(file);
-+ vma_fput(vma);
++ if (!IS_ERR_VALUE(ret) && file && prfile) {
++ struct vm_area_struct *new_vma;
++
++ new_vma = find_vma(mm, ret);
++ if (!new_vma->vm_prfile)
++ new_vma->vm_prfile = prfile;
++ if (new_vma != vma)
++ get_file(prfile);
++ }
++ /*
++ * two fput()s instead of vma_fput(vma),
++ * coz vma may not be available anymore.
++ */
+ fput(file);
++ if (prfile)
++ fput(prfile);
out:
up_write(&mm->mmap_sem);
if (populate)
-@@ -2949,7 +2948,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
+@@ -2949,7 +2966,7 @@ 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)
@@ -612,29 +709,41 @@ index 0000000..b323b8a
+ fput(pr);
+}
+#endif /* !CONFIG_MMU */
-aufs4.1 standalone patch
+aufs4.1.13+ standalone patch
diff --git a/fs/dcache.c b/fs/dcache.c
-index bc261e2..8d7951d 100644
+index 23bdfa1..00fbc3d 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -1269,6 +1269,7 @@ rename_retry:
+@@ -1272,6 +1272,7 @@ rename_retry:
seq = 1;
goto again;
}
-+EXPORT_SYMBOL(d_walk);
++EXPORT_SYMBOL_GPL(d_walk);
/*
* Search for at least 1 mount point in the dentry's subdirs.
+diff --git a/fs/fcntl.c b/fs/fcntl.c
+index dacbf71..8abb9f81 100644
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -81,6 +81,7 @@ int setfl(int fd, struct file * filp, unsigned long arg)
+ out:
+ return error;
+ }
++EXPORT_SYMBOL_GPL(setfl);
+
+ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
+ int force)
diff --git a/fs/file_table.c b/fs/file_table.c
-index 294174d..a3c818d 100644
+index 294174d..ccf2b15 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -147,6 +147,7 @@ over:
}
return ERR_PTR(-ENFILE);
}
-+EXPORT_SYMBOL(get_empty_filp);
++EXPORT_SYMBOL_GPL(get_empty_filp);
/**
* alloc_file - allocate and initialize a 'struct file'
@@ -642,7 +751,7 @@ index 294174d..a3c818d 100644
{
delayed_fput(NULL);
}
-+EXPORT_SYMBOL(flush_delayed_fput);
++EXPORT_SYMBOL_GPL(flush_delayed_fput);
static DECLARE_DELAYED_WORK(delayed_fput_work, delayed_fput);
@@ -650,7 +759,7 @@ index 294174d..a3c818d 100644
}
EXPORT_SYMBOL(fput);
-+EXPORT_SYMBOL(__fput_sync);
++EXPORT_SYMBOL_GPL(__fput_sync);
void put_filp(struct file *file)
{
@@ -658,24 +767,32 @@ index 294174d..a3c818d 100644
file_free(file);
}
}
-+EXPORT_SYMBOL(put_filp);
++EXPORT_SYMBOL_GPL(put_filp);
void __init files_init(unsigned long mempages)
{
diff --git a/fs/inode.c b/fs/inode.c
-index ea37cd1..58f5f58 100644
+index a3b268c..0f1cd14 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -58,6 +58,7 @@ static struct hlist_head *inode_hashtable __read_mostly;
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_hash_lock);
__cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_sb_list_lock);
-+EXPORT_SYMBOL(inode_sb_list_lock);
++EXPORT_SYMBOL_GPL(inode_sb_list_lock);
/*
* Empty aops. Can be used for the cases where the user does not
+@@ -1575,6 +1576,7 @@ int update_time(struct inode *inode, struct timespec *time, int flags)
+
+ return update_time(inode, time, flags);
+ }
++EXPORT_SYMBOL_GPL(update_time);
+
+ /**
+ * touch_atime - update the access time
diff --git a/fs/namespace.c b/fs/namespace.c
-index 1b9e111..d45b81b 100644
+index fce3cc1..c138902 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -463,6 +463,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
@@ -686,16 +803,16 @@ index 1b9e111..d45b81b 100644
/**
* mnt_drop_write - give up write access to a mount
-@@ -1768,6 +1769,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
+@@ -1792,6 +1793,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
}
return 0;
}
-+EXPORT_SYMBOL(iterate_mounts);
++EXPORT_SYMBOL_GPL(iterate_mounts);
static void cleanup_group_ids(struct mount *mnt, struct mount *end)
{
diff --git a/fs/notify/group.c b/fs/notify/group.c
-index d16b62c..06ca6bc 100644
+index d16b62c..53e45b6 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -22,6 +22,7 @@
@@ -710,7 +827,7 @@ index d16b62c..06ca6bc 100644
{
atomic_inc(&group->refcnt);
}
-+EXPORT_SYMBOL(fsnotify_get_group);
++EXPORT_SYMBOL_GPL(fsnotify_get_group);
/*
* Drop a reference to a group. Free it if it's through.
@@ -718,7 +835,7 @@ index d16b62c..06ca6bc 100644
if (atomic_dec_and_test(&group->refcnt))
fsnotify_final_destroy_group(group);
}
-+EXPORT_SYMBOL(fsnotify_put_group);
++EXPORT_SYMBOL_GPL(fsnotify_put_group);
/*
* Create a new fsnotify_group and hold a reference for the group returned.
@@ -726,19 +843,19 @@ index d16b62c..06ca6bc 100644
return group;
}
-+EXPORT_SYMBOL(fsnotify_alloc_group);
++EXPORT_SYMBOL_GPL(fsnotify_alloc_group);
int fsnotify_fasync(int fd, struct file *file, int on)
{
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
-index 92e48c7..d2c4b68 100644
+index 39ddcaf..11523fa 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -109,6 +109,7 @@ void fsnotify_put_mark(struct fsnotify_mark *mark)
mark->free_mark(mark);
}
}
-+EXPORT_SYMBOL(fsnotify_put_mark);
++EXPORT_SYMBOL_GPL(fsnotify_put_mark);
/* Calculate mask of events for a list of marks */
u32 fsnotify_recalc_mask(struct hlist_head *head)
@@ -746,7 +863,7 @@ index 92e48c7..d2c4b68 100644
fsnotify_destroy_mark_locked(mark, group);
mutex_unlock(&group->mark_mutex);
}
-+EXPORT_SYMBOL(fsnotify_destroy_mark);
++EXPORT_SYMBOL_GPL(fsnotify_destroy_mark);
/*
* Destroy all marks in the given list. The marks must be already detached from
@@ -754,27 +871,27 @@ index 92e48c7..d2c4b68 100644
return ret;
}
-+EXPORT_SYMBOL(fsnotify_add_mark);
++EXPORT_SYMBOL_GPL(fsnotify_add_mark);
int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group,
struct inode *inode, struct vfsmount *mnt, int allow_dups)
-@@ -455,6 +458,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
+@@ -475,6 +478,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
atomic_set(&mark->refcnt, 1);
mark->free_mark = free_mark;
}
-+EXPORT_SYMBOL(fsnotify_init_mark);
++EXPORT_SYMBOL_GPL(fsnotify_init_mark);
static int fsnotify_mark_destroy(void *ignored)
{
diff --git a/fs/open.c b/fs/open.c
-index 98e5a52..a94e2e7 100644
+index f9d2bf9..6c74bd2 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -62,6 +62,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
mutex_unlock(&dentry->d_inode->i_mutex);
return ret;
}
-+EXPORT_SYMBOL(do_truncate);
++EXPORT_SYMBOL_GPL(do_truncate);
long vfs_truncate(struct path *path, loff_t length)
{
@@ -782,19 +899,19 @@ index 98e5a52..a94e2e7 100644
}
return 0;
}
-+EXPORT_SYMBOL(open_check_o_direct);
++EXPORT_SYMBOL_GPL(open_check_o_direct);
static int do_dentry_open(struct file *f,
- int (*open)(struct inode *, struct file *),
+ struct inode *inode,
diff --git a/fs/read_write.c b/fs/read_write.c
-index fd0414e..8ace6ec 100644
+index fd0414e..0a28933 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -504,6 +504,7 @@ vfs_readf_t vfs_readf(struct file *file)
return new_sync_read;
return ERR_PTR(-ENOSYS);
}
-+EXPORT_SYMBOL(vfs_readf);
++EXPORT_SYMBOL_GPL(vfs_readf);
vfs_writef_t vfs_writef(struct file *file)
{
@@ -802,19 +919,19 @@ index fd0414e..8ace6ec 100644
return new_sync_write;
return ERR_PTR(-ENOSYS);
}
-+EXPORT_SYMBOL(vfs_writef);
++EXPORT_SYMBOL_GPL(vfs_writef);
ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos)
{
diff --git a/fs/splice.c b/fs/splice.c
-index fa5eee5..bfb3324 100644
+index fa5eee5..8cf380e 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1114,6 +1114,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
return splice_write(pipe, out, ppos, len, flags);
}
-+EXPORT_SYMBOL(do_splice_from);
++EXPORT_SYMBOL_GPL(do_splice_from);
/*
* Attempt to initiate a splice from a file to a pipe.
@@ -822,49 +939,61 @@ index fa5eee5..bfb3324 100644
return splice_read(in, ppos, pipe, len, flags);
}
-+EXPORT_SYMBOL(do_splice_to);
++EXPORT_SYMBOL_GPL(do_splice_to);
/**
* splice_direct_to_actor - splices data directly between two non-pipes
+diff --git a/fs/sync.c b/fs/sync.c
+index b8a9541a..cdf1eca 100644
+--- a/fs/sync.c
++++ b/fs/sync.c
+@@ -38,6 +38,7 @@ int __sync_filesystem(struct super_block *sb, int wait)
+ sb->s_op->sync_fs(sb, wait);
+ return __sync_blockdev(sb->s_bdev, wait);
+ }
++EXPORT_SYMBOL_GPL(__sync_filesystem);
+
+ /*
+ * Write out and wait upon all dirty data associated with this
diff --git a/fs/xattr.c b/fs/xattr.c
-index 4ef6985..6bb6303 100644
+index 4ef6985..ed801c7 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -207,6 +207,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
*xattr_value = value;
return error;
}
-+EXPORT_SYMBOL(vfs_getxattr_alloc);
++EXPORT_SYMBOL_GPL(vfs_getxattr_alloc);
/* Compare an extended attribute value with the given value */
int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
diff --git a/kernel/task_work.c b/kernel/task_work.c
-index 8727032..7003e5a 100644
+index 8727032..e7279d1 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -126,3 +126,4 @@ void task_work_run(void)
} while (work);
}
}
-+EXPORT_SYMBOL(task_work_run);
++EXPORT_SYMBOL_GPL(task_work_run);
diff --git a/security/commoncap.c b/security/commoncap.c
-index f2875cd..ebf06ec 100644
+index f2875cd..becd5fd 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -975,9 +975,11 @@ int cap_mmap_addr(unsigned long addr)
}
return ret;
}
-+EXPORT_SYMBOL(cap_mmap_addr);
++EXPORT_SYMBOL_GPL(cap_mmap_addr);
int cap_mmap_file(struct file *file, unsigned long reqprot,
unsigned long prot, unsigned long flags)
{
return 0;
}
-+EXPORT_SYMBOL(cap_mmap_file);
++EXPORT_SYMBOL_GPL(cap_mmap_file);
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
-index 188c1d2..426d9af 100644
+index 188c1d2..6bc2fa5 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -7,6 +7,7 @@
@@ -879,19 +1008,19 @@ index 188c1d2..426d9af 100644
return __devcgroup_check_permission(type, imajor(inode), iminor(inode),
access);
}
-+EXPORT_SYMBOL(__devcgroup_inode_permission);
++EXPORT_SYMBOL_GPL(__devcgroup_inode_permission);
int devcgroup_inode_mknod(int mode, dev_t dev)
{
diff --git a/security/security.c b/security/security.c
-index 8e9b1f4..c1c7cd1 100644
+index 8e9b1f4..6ad423d 100644
--- a/security/security.c
+++ b/security/security.c
@@ -430,6 +430,7 @@ int security_path_rmdir(struct path *dir, struct dentry *dentry)
return 0;
return security_ops->path_rmdir(dir, dentry);
}
-+EXPORT_SYMBOL(security_path_rmdir);
++EXPORT_SYMBOL_GPL(security_path_rmdir);
int security_path_unlink(struct path *dir, struct dentry *dentry)
{
@@ -899,7 +1028,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->path_symlink(dir, dentry, old_name);
}
-+EXPORT_SYMBOL(security_path_symlink);
++EXPORT_SYMBOL_GPL(security_path_symlink);
int security_path_link(struct dentry *old_dentry, struct path *new_dir,
struct dentry *new_dentry)
@@ -907,7 +1036,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->path_link(old_dentry, new_dir, new_dentry);
}
-+EXPORT_SYMBOL(security_path_link);
++EXPORT_SYMBOL_GPL(security_path_link);
int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
struct path *new_dir, struct dentry *new_dentry,
@@ -915,7 +1044,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->path_truncate(path);
}
-+EXPORT_SYMBOL(security_path_truncate);
++EXPORT_SYMBOL_GPL(security_path_truncate);
int security_path_chmod(struct path *path, umode_t mode)
{
@@ -923,7 +1052,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->path_chmod(path, mode);
}
-+EXPORT_SYMBOL(security_path_chmod);
++EXPORT_SYMBOL_GPL(security_path_chmod);
int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
{
@@ -931,7 +1060,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->path_chown(path, uid, gid);
}
-+EXPORT_SYMBOL(security_path_chown);
++EXPORT_SYMBOL_GPL(security_path_chown);
int security_path_chroot(struct path *path)
{
@@ -939,7 +1068,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->inode_readlink(dentry);
}
-+EXPORT_SYMBOL(security_inode_readlink);
++EXPORT_SYMBOL_GPL(security_inode_readlink);
int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
{
@@ -947,7 +1076,7 @@ index 8e9b1f4..c1c7cd1 100644
return 0;
return security_ops->inode_permission(inode, mask);
}
-+EXPORT_SYMBOL(security_inode_permission);
++EXPORT_SYMBOL_GPL(security_inode_permission);
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
@@ -955,7 +1084,7 @@ index 8e9b1f4..c1c7cd1 100644
return fsnotify_perm(file, mask);
}
-+EXPORT_SYMBOL(security_file_permission);
++EXPORT_SYMBOL_GPL(security_file_permission);
int security_file_alloc(struct file *file)
{
@@ -963,13 +1092,13 @@ index 8e9b1f4..c1c7cd1 100644
return ret;
return ima_file_mmap(file, prot);
}
-+EXPORT_SYMBOL(security_mmap_file);
++EXPORT_SYMBOL_GPL(security_mmap_file);
int security_mmap_addr(unsigned long addr)
{
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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/ABI/testing/debugfs-aufs 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,50 @@
+What: /debug/aufs/si_<id>/
+Date: March 2009
@@ -1023,7 +1152,7 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/debugfs-aufs linux/Document
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/ABI/testing/sysfs-aufs 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,31 @@
+What: /sys/fs/aufs/si_<id>/
+Date: March 2009
@@ -1058,10 +1187,10 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/sysfs-aufs linux/Documentat
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/01intro.txt 2017-09-13 12:15:05.696012425 +0200
@@ -0,0 +1,170 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -1232,10 +1361,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt lin
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/02struct.txt 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,258 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -1494,10 +1623,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt li
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/03atomic_open.txt 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,85 @@
+
-+# Copyright (C) 2015-2016 Junjiro R. Okajima
++# Copyright (C) 2015-2017 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
@@ -1583,10 +1712,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.t
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/03lookup.txt 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,113 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -1700,10 +1829,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt li
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/04branch.txt 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,74 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -1778,10 +1907,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt li
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/05wbr_policy.txt 2017-07-29 12:14:25.893041746 +0200
@@ -0,0 +1,64 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -1846,10 +1975,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.tx
+ copyup policy.
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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/06fhsm.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,120 @@
+
-+# Copyright (C) 2011-2016 Junjiro R. Okajima
++# Copyright (C) 2011-2017 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
@@ -1970,10 +2099,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt linu
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/06mmap.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,72 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -2046,10 +2175,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt linu
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/06xattr.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,96 @@
+
-+# Copyright (C) 2014-2016 Junjiro R. Okajima
++# Copyright (C) 2014-2017 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
@@ -2146,10 +2275,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt lin
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/07export.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,58 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -2208,10 +2337,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt li
+ 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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/08shwh.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,52 @@
+
-+# Copyright (C) 2005-2016 Junjiro R. Okajima
++# Copyright (C) 2005-2017 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
@@ -2264,10 +2393,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt linu
+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 2016-02-28 11:26:44.736895402 +0100
++++ linux/Documentation/filesystems/aufs/design/10dynop.txt 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,47 @@
+
-+# Copyright (C) 2010-2016 Junjiro R. Okajima
++# Copyright (C) 2010-2017 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
@@ -2315,8 +2444,8 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt lin
+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 2016-02-28 11:26:44.736895402 +0100
-@@ -0,0 +1,391 @@
++++ linux/Documentation/filesystems/aufs/README 2017-07-29 12:14:25.893041746 +0200
+@@ -0,0 +1,393 @@
+
+Aufs4 -- advanced multi layered unification filesystem version 4.x
+http://aufs.sf.net
@@ -2691,6 +2820,8 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta
+Stefano Di Biase made a donation (2014/8).
+Daniel Epellei made a donation (2015/1).
+OmegaPhil made a donation (2016/1).
++Tomasz Szewczyk made a donation (2016/4).
++James Burry made a donation (2016/12).
+
+Thank you very much.
+Donations are always, including future donations, very important and
@@ -2710,10 +2841,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta
+# 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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/aufs.h 2017-07-29 12:14:25.896375188 +0200
@@ -0,0 +1,59 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -2773,10 +2904,10 @@ diff -urN /usr/share/empty/fs/aufs/aufs.h linux/fs/aufs/aufs.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,1408 @@
++++ linux/fs/aufs/branch.c 2017-09-13 12:15:05.716013038 +0200
+@@ -0,0 +1,1412 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -2815,7 +2946,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ fput(br->br_xino.xi_file);
+ mutex_destroy(&br->br_xino.xi_nondir_mtx);
+
-+ AuDebugOn(atomic_read(&br->br_count));
++ AuDebugOn(au_br_count(br));
++ au_br_count_fin(br);
+
+ wbr = br->br_wbr;
+ if (wbr) {
@@ -2827,7 +2959,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+ if (br->br_fhsm) {
+ au_br_fhsm_fin(br->br_fhsm);
-+ kfree(br->br_fhsm);
++ au_delayed_kfree(br->br_fhsm);
+ }
+
+ key = br->br_dykey;
@@ -2841,8 +2973,9 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ lockdep_off();
+ path_put(&br->br_path);
+ lockdep_on();
-+ kfree(wbr);
-+ kfree(br);
++ if (wbr)
++ au_delayed_kfree(wbr);
++ au_delayed_kfree(br);
+}
+
+/*
@@ -2855,7 +2988,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
-+ bmax = sbinfo->si_bend + 1;
++ bmax = sbinfo->si_bbot + 1;
+ br = sbinfo->si_branch;
+ while (bmax--)
+ au_br_do_free(*br++);
@@ -2866,10 +2999,10 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ */
+int au_br_index(struct super_block *sb, aufs_bindex_t br_id)
+{
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+
-+ bend = au_sbend(sb);
-+ for (bindex = 0; bindex <= bend; bindex++)
++ bbot = au_sbbot(sb);
++ for (bindex = 0; bindex <= bbot; bindex++)
+ if (au_sbr_id(sb, bindex) == br_id)
+ return bindex;
+ return -1;
@@ -2929,22 +3062,23 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ goto out_wbr;
+ }
+
-+ err = au_sbr_realloc(au_sbi(sb), new_nbranch);
++ err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0);
+ if (!err)
-+ err = au_di_realloc(au_di(root), new_nbranch);
++ err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0);
+ if (!err) {
+ inode = d_inode(root);
-+ err = au_ii_realloc(au_ii(inode), new_nbranch);
++ err = au_hinode_realloc(au_ii(inode), new_nbranch, /*may_shrink*/0);
+ }
+ if (!err)
+ return add_branch; /* success */
+
+out_wbr:
-+ kfree(add_branch->br_wbr);
++ if (add_branch->br_wbr)
++ au_delayed_kfree(add_branch->br_wbr);
+out_hnotify:
+ au_hnotify_fin_br(add_branch);
+out_br:
-+ kfree(add_branch);
++ au_delayed_kfree(add_branch);
+out:
+ return ERR_PTR(err);
+}
@@ -2976,13 +3110,13 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+static int test_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+ int err;
-+ aufs_bindex_t bend, bindex;
++ aufs_bindex_t bbot, bindex;
+ struct dentry *root, *h_dentry;
+ struct inode *inode, *h_inode;
+
+ root = sb->s_root;
-+ bend = au_sbend(sb);
-+ if (unlikely(bend >= 0
++ bbot = au_sbbot(sb);
++ if (unlikely(bbot >= 0
+ && au_find_dbindex(root, add->path.dentry) >= 0)) {
+ err = 1;
+ if (!remount) {
@@ -2994,13 +3128,13 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+ err = -ENOSPC; /* -E2BIG; */
+ if (unlikely(AUFS_BRANCH_MAX <= add->bindex
-+ || AUFS_BRANCH_MAX - 1 <= bend)) {
++ || AUFS_BRANCH_MAX - 1 <= bbot)) {
+ pr_err("number of branches exceeded %s\n", add->pathname);
+ goto out;
+ }
+
+ err = -EDOM;
-+ if (unlikely(add->bindex < 0 || bend + 1 < add->bindex)) {
++ if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) {
+ pr_err("bad index %d\n", add->bindex);
+ goto out;
+ }
@@ -3034,11 +3168,11 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ if (unlikely(err))
+ goto out;
+
-+ if (bend < 0)
++ if (bbot < 0)
+ return 0; /* success */
+
+ err = -EINVAL;
-+ for (bindex = 0; bindex <= bend; bindex++)
++ for (bindex = 0; bindex <= bbot; bindex++)
+ if (unlikely(test_overlap(sb, add->path.dentry,
+ au_h_dptr(root, bindex)))) {
+ pr_err("%s is overlapped\n", add->pathname);
@@ -3110,7 +3244,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ br->br_perm = old_perm;
+
+ if (!err && wbr && !au_br_writable(new_perm)) {
-+ kfree(wbr);
++ au_delayed_kfree(wbr);
+ br->br_wbr = NULL;
+ }
+
@@ -3160,7 +3294,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ br->br_perm = add->perm;
+ br->br_path = add->path; /* set first, path_get() later */
+ spin_lock_init(&br->br_dykey_lock);
-+ atomic_set(&br->br_count, 0);
++ au_br_count_init(br);
+ atomic_set(&br->br_xino_running, 0);
+ br->br_id = au_new_br_id(sb);
+ AuDebugOn(br->br_id < 0);
@@ -3192,7 +3326,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+}
+
+static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex,
-+ struct au_branch *br, aufs_bindex_t bend,
++ struct au_branch *br, aufs_bindex_t bbot,
+ aufs_bindex_t amount)
+{
+ struct au_branch **brp;
@@ -3202,40 +3336,39 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ brp = sbinfo->si_branch + bindex;
+ memmove(brp + 1, brp, sizeof(*brp) * amount);
+ *brp = br;
-+ sbinfo->si_bend++;
-+ if (unlikely(bend < 0))
-+ sbinfo->si_bend = 0;
++ sbinfo->si_bbot++;
++ if (unlikely(bbot < 0))
++ sbinfo->si_bbot = 0;
+}
+
+static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex,
-+ aufs_bindex_t bend, aufs_bindex_t amount)
++ aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+ struct au_hdentry *hdp;
+
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
-+ hdp = dinfo->di_hdentry + bindex;
++ hdp = au_hdentry(dinfo, bindex);
+ memmove(hdp + 1, hdp, sizeof(*hdp) * amount);
+ au_h_dentry_init(hdp);
-+ dinfo->di_bend++;
-+ if (unlikely(bend < 0))
-+ dinfo->di_bstart = 0;
++ dinfo->di_bbot++;
++ if (unlikely(bbot < 0))
++ dinfo->di_btop = 0;
+}
+
+static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex,
-+ aufs_bindex_t bend, aufs_bindex_t amount)
++ aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+ struct au_hinode *hip;
+
+ AuRwMustWriteLock(&iinfo->ii_rwsem);
+
-+ hip = iinfo->ii_hinode + bindex;
++ hip = au_hinode(iinfo, bindex);
+ memmove(hip + 1, hip, sizeof(*hip) * amount);
-+ hip->hi_inode = NULL;
-+ au_hn_init(hip);
-+ iinfo->ii_bend++;
-+ if (unlikely(bend < 0))
-+ iinfo->ii_bstart = 0;
++ au_hinode_init(hip);
++ iinfo->ii_bbot++;
++ if (unlikely(bbot < 0))
++ iinfo->ii_btop = 0;
+}
+
+static void au_br_do_add(struct super_block *sb, struct au_branch *br,
@@ -3243,17 +3376,17 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+{
+ struct dentry *root, *h_dentry;
+ struct inode *root_inode, *h_inode;
-+ aufs_bindex_t bend, amount;
++ aufs_bindex_t bbot, amount;
+
+ root = sb->s_root;
+ root_inode = d_inode(root);
-+ bend = au_sbend(sb);
-+ amount = bend + 1 - bindex;
++ bbot = au_sbbot(sb);
++ amount = bbot + 1 - bindex;
+ h_dentry = au_br_dentry(br);
+ au_sbilist_lock();
-+ au_br_do_add_brp(au_sbi(sb), bindex, br, bend, amount);
-+ au_br_do_add_hdp(au_di(root), bindex, bend, amount);
-+ au_br_do_add_hip(au_ii(root_inode), bindex, bend, amount);
++ au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount);
++ au_br_do_add_hdp(au_di(root), bindex, bbot, amount);
++ au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount);
+ au_set_h_dptr(root, bindex, dget(h_dentry));
+ h_inode = d_inode(h_dentry);
+ au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0);
@@ -3263,7 +3396,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+ int err;
-+ aufs_bindex_t bend, add_bindex;
++ aufs_bindex_t bbot, add_bindex;
+ struct dentry *root, *h_dentry;
+ struct inode *root_inode;
+ struct au_branch *add_branch;
@@ -3279,8 +3412,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ goto out; /* success */
+ }
+
-+ bend = au_sbend(sb);
-+ add_branch = au_br_alloc(sb, bend + 2, add->perm);
++ bbot = au_sbbot(sb);
++ add_branch = au_br_alloc(sb, bbot + 2, add->perm);
+ err = PTR_ERR(add_branch);
+ if (IS_ERR(add_branch))
+ goto out;
@@ -3357,7 +3490,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+static struct file **au_farray_alloc(struct super_block *sb,
+ unsigned long long *max)
+{
-+ *max = atomic_long_read(&au_sbi(sb)->si_nfiles);
++ *max = au_nfiles(sb);
+ return au_array_alloc(max, au_farray_cb, sb);
+}
+
@@ -3383,16 +3516,16 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ pr_info(fmt, ##__VA_ARGS__); \
+} while (0)
+
-+static int au_test_ibusy(struct inode *inode, aufs_bindex_t bstart,
-+ aufs_bindex_t bend)
++static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop,
++ aufs_bindex_t bbot)
+{
-+ return (inode && !S_ISDIR(inode->i_mode)) || bstart == bend;
++ return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot;
+}
+
-+static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t bstart,
-+ aufs_bindex_t bend)
++static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop,
++ aufs_bindex_t bbot)
+{
-+ return au_test_ibusy(d_inode(dentry), bstart, bend);
++ return au_test_ibusy(d_inode(dentry), btop, bbot);
+}
+
+/*
@@ -3402,7 +3535,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ unsigned int sigen, const unsigned int verbose)
+{
+ int err, i, j, ndentry;
-+ aufs_bindex_t bstart, bend;
++ aufs_bindex_t btop, bbot;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry *d;
@@ -3442,12 +3575,12 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ }
+
+ /* AuDbgDentry(d); */
-+ bstart = au_dbstart(d);
-+ bend = au_dbend(d);
-+ if (bstart <= bindex
-+ && bindex <= bend
++ btop = au_dbtop(d);
++ bbot = au_dbbot(d);
++ if (btop <= bindex
++ && bindex <= bbot
+ && au_h_dptr(d, bindex)
-+ && au_test_dbusy(d, bstart, bend)) {
++ && au_test_dbusy(d, btop, bbot)) {
+ err = -EBUSY;
+ AuVerbose(verbose, "busy %pd\n", d);
+ AuDbgDentry(d);
@@ -3468,7 +3601,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ int err;
+ unsigned long long max, ull;
+ struct inode *i, **array;
-+ aufs_bindex_t bstart, bend;
++ aufs_bindex_t btop, bbot;
+
+ array = au_iarray_alloc(sb, &max);
+ err = PTR_ERR(array);
@@ -3499,12 +3632,12 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ }
+ }
+
-+ bstart = au_ibstart(i);
-+ bend = au_ibend(i);
-+ if (bstart <= bindex
-+ && bindex <= bend
++ btop = au_ibtop(i);
++ bbot = au_ibbot(i);
++ if (btop <= bindex
++ && bindex <= bbot
+ && au_h_iptr(i, bindex)
-+ && au_test_ibusy(i, bstart, bend)) {
++ && au_test_ibusy(i, btop, bbot)) {
+ err = -EBUSY;
+ AuVerbose(verbose, "busy i%lu\n", i->i_ino);
+ AuDbgInode(i);
@@ -3540,7 +3673,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+{
+ int err;
+ unsigned char matched, root;
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct au_fidir *fidir;
+ struct au_hfile *hfile;
+
@@ -3556,8 +3689,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ matched = 0;
+ fidir = au_fi(file)->fi_hdir;
+ AuDebugOn(!fidir);
-+ bend = au_fbend_dir(file);
-+ for (bindex = au_fbstart(file); bindex <= bend; bindex++) {
++ bbot = au_fbbot_dir(file);
++ for (bindex = au_fbtop(file); bindex <= bbot; bindex++) {
+ hfile = fidir->fd_hfile + bindex;
+ if (!hfile->hf_file)
+ continue;
@@ -3579,7 +3712,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+{
+ int err, idx;
+ unsigned long long ull, max;
-+ aufs_bindex_t bstart;
++ aufs_bindex_t btop;
+ struct file *file, **array;
+ struct dentry *root;
+ struct au_hfile *hfile;
@@ -3600,7 +3733,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+ /* AuDbg("%pD\n", file); */
+ fi_read_lock(file);
-+ bstart = au_fbstart(file);
++ btop = au_fbtop(file);
+ if (!d_is_dir(file->f_path.dentry)) {
+ hfile = &au_fi(file)->fi_htop;
+ if (hfile->hf_br->br_id == br_id)
@@ -3623,7 +3756,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ aufs_bindex_t br_id)
+{
+ unsigned long long ull;
-+ aufs_bindex_t bindex, bstart, bend, bfound;
++ aufs_bindex_t bindex, btop, bbot, bfound;
+ struct file *file;
+ struct au_fidir *fidir;
+ struct au_hfile *hfile;
@@ -3639,9 +3772,9 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ fidir = au_fi(file)->fi_hdir;
+ AuDebugOn(!fidir);
+ fi_write_lock(file);
-+ bstart = au_fbstart(file);
-+ bend = au_fbend_dir(file);
-+ for (bindex = bstart; bindex <= bend; bindex++) {
++ btop = au_fbtop(file);
++ bbot = au_fbbot_dir(file);
++ for (bindex = btop; bindex <= bbot; bindex++) {
+ hfile = fidir->fd_hfile + bindex;
+ if (!hfile->hf_file)
+ continue;
@@ -3653,10 +3786,10 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ }
+ AuDebugOn(bfound < 0);
+ au_set_h_fptr(file, bfound, NULL);
-+ if (bfound == bstart) {
-+ for (bstart++; bstart <= bend; bstart++)
-+ if (au_hf_dir(file, bstart)) {
-+ au_set_fbstart(file, bstart);
++ if (bfound == btop) {
++ for (btop++; btop <= bbot; btop++)
++ if (au_hf_dir(file, btop)) {
++ au_set_fbtop(file, btop);
+ break;
+ }
+ }
@@ -3666,59 +3799,60 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+static void au_br_do_del_brp(struct au_sbinfo *sbinfo,
+ const aufs_bindex_t bindex,
-+ const aufs_bindex_t bend)
++ const aufs_bindex_t bbot)
+{
+ struct au_branch **brp, **p;
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+ brp = sbinfo->si_branch + bindex;
-+ if (bindex < bend)
-+ memmove(brp, brp + 1, sizeof(*brp) * (bend - bindex));
-+ sbinfo->si_branch[0 + bend] = NULL;
-+ sbinfo->si_bend--;
++ if (bindex < bbot)
++ memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex));
++ sbinfo->si_branch[0 + bbot] = NULL;
++ sbinfo->si_bbot--;
+
-+ p = krealloc(sbinfo->si_branch, sizeof(*p) * bend, AuGFP_SBILIST);
++ p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST,
++ /*may_shrink*/1);
+ if (p)
+ sbinfo->si_branch = p;
+ /* harmless error */
+}
+
+static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex,
-+ const aufs_bindex_t bend)
++ const aufs_bindex_t bbot)
+{
+ struct au_hdentry *hdp, *p;
+
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
-+ hdp = dinfo->di_hdentry;
-+ if (bindex < bend)
-+ memmove(hdp + bindex, hdp + bindex + 1,
-+ sizeof(*hdp) * (bend - bindex));
-+ hdp[0 + bend].hd_dentry = NULL;
-+ dinfo->di_bend--;
++ hdp = au_hdentry(dinfo, bindex);
++ if (bindex < bbot)
++ memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex));
++ /* au_h_dentry_init(au_hdentry(dinfo, bbot); */
++ dinfo->di_bbot--;
+
-+ p = krealloc(hdp, sizeof(*p) * bend, AuGFP_SBILIST);
++ p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST,
++ /*may_shrink*/1);
+ if (p)
+ dinfo->di_hdentry = p;
+ /* harmless error */
+}
+
+static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex,
-+ const aufs_bindex_t bend)
++ const aufs_bindex_t bbot)
+{
+ struct au_hinode *hip, *p;
+
+ AuRwMustWriteLock(&iinfo->ii_rwsem);
+
-+ hip = iinfo->ii_hinode + bindex;
-+ if (bindex < bend)
-+ memmove(hip, hip + 1, sizeof(*hip) * (bend - bindex));
-+ iinfo->ii_hinode[0 + bend].hi_inode = NULL;
-+ au_hn_init(iinfo->ii_hinode + bend);
-+ iinfo->ii_bend--;
++ hip = au_hinode(iinfo, bindex);
++ if (bindex < bbot)
++ memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex));
++ /* au_hinode_init(au_hinode(iinfo, bbot)); */
++ iinfo->ii_bbot--;
+
-+ p = krealloc(iinfo->ii_hinode, sizeof(*p) * bend, AuGFP_SBILIST);
++ p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST,
++ /*may_shrink*/1);
+ if (p)
+ iinfo->ii_hinode = p;
+ /* harmless error */
@@ -3727,7 +3861,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex,
+ struct au_branch *br)
+{
-+ aufs_bindex_t bend;
++ aufs_bindex_t bbot;
+ struct au_sbinfo *sbinfo;
+ struct dentry *root, *h_root;
+ struct inode *inode, *h_inode;
@@ -3738,7 +3872,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ root = sb->s_root;
+ inode = d_inode(root);
+ sbinfo = au_sbi(sb);
-+ bend = sbinfo->si_bend;
++ bbot = sbinfo->si_bbot;
+
+ h_root = au_h_dptr(root, bindex);
+ hinode = au_hi(inode, bindex);
@@ -3746,9 +3880,9 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ au_hiput(hinode);
+
+ au_sbilist_lock();
-+ au_br_do_del_brp(sbinfo, bindex, bend);
-+ au_br_do_del_hdp(au_di(root), bindex, bend);
-+ au_br_do_del_hip(au_ii(inode), bindex, bend);
++ au_br_do_del_brp(sbinfo, bindex, bbot);
++ au_br_do_del_hdp(au_di(root), bindex, bbot);
++ au_br_do_del_hip(au_ii(inode), bindex, bbot);
+ au_sbilist_unlock();
+
+ dput(h_root);
@@ -3767,7 +3901,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ int err, rerr, i;
+ unsigned long long opened;
+ unsigned int mnt_flags;
-+ aufs_bindex_t bindex, bend, br_id;
++ aufs_bindex_t bindex, bbot, br_id;
+ unsigned char do_wh, verbose;
+ struct au_branch *br;
+ struct au_wbr *wbr;
@@ -3791,8 +3925,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ err = -EBUSY;
+ mnt_flags = au_mntflags(sb);
+ verbose = !!au_opt_test(mnt_flags, VERBOSE);
-+ bend = au_sbend(sb);
-+ if (unlikely(!bend)) {
++ bbot = au_sbbot(sb);
++ if (unlikely(!bbot)) {
+ AuVerbose(verbose, "no more branches left\n");
+ goto out;
+ }
@@ -3800,7 +3934,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ AuDebugOn(!path_equal(&br->br_path, &del->h_path));
+
+ br_id = br->br_id;
-+ opened = atomic_read(&br->br_count);
++ opened = au_br_count(br);
+ if (unlikely(opened)) {
+ to_free = au_array_alloc(&opened, empty_cb, NULL);
+ err = PTR_ERR(to_free);
@@ -3880,7 +4014,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg)
+{
+ int err;
-+ aufs_bindex_t bstart, bend;
++ aufs_bindex_t btop, bbot;
+ struct aufs_ibusy ibusy;
+ struct inode *inode, *h_inode;
+
@@ -3899,7 +4033,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+
+ err = -EINVAL;
+ si_read_lock(sb, AuLock_FLUSH);
-+ if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbend(sb)))
++ if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb)))
+ goto out_unlock;
+
+ err = 0;
@@ -3907,15 +4041,15 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ inode = ilookup(sb, ibusy.ino);
+ if (!inode
+ || inode->i_ino == AUFS_ROOT_INO
-+ || is_bad_inode(inode))
++ || au_is_bad_inode(inode))
+ goto out_unlock;
+
+ ii_read_lock_child(inode);
-+ bstart = au_ibstart(inode);
-+ bend = au_ibend(inode);
-+ if (bstart <= ibusy.bindex && ibusy.bindex <= bend) {
++ btop = au_ibtop(inode);
++ bbot = au_ibbot(inode);
++ if (btop <= ibusy.bindex && ibusy.bindex <= bbot) {
+ h_inode = au_h_iptr(inode, ibusy.bindex);
-+ if (h_inode && au_test_ibusy(inode, bstart, bend))
++ if (h_inode && au_test_ibusy(inode, btop, bbot))
+ ibusy.h_ino = h_inode->i_ino;
+ }
+ ii_read_unlock(inode);
@@ -4136,7 +4270,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ if (br->br_wbr) {
+ err = au_wbr_init(br, sb, mod->perm);
+ if (unlikely(err)) {
-+ kfree(br->br_wbr);
++ au_delayed_kfree(br->br_wbr);
+ br->br_wbr = NULL;
+ }
+ }
@@ -4148,7 +4282,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ if (!au_br_fhsm(mod->perm)) {
+ /* fhsm --> non-fhsm */
+ au_br_fhsm_fin(br->br_fhsm);
-+ kfree(br->br_fhsm);
++ au_delayed_kfree(br->br_fhsm);
+ br->br_fhsm = NULL;
+ }
+ } else if (au_br_fhsm(mod->perm))
@@ -4160,7 +4294,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+ goto out; /* success */
+
+out_bf:
-+ kfree(bf);
++ if (bf)
++ au_delayed_kfree(bf);
+out:
+ AuTraceErr(err);
+ return err;
@@ -4185,10 +4320,10 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c
+}
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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,279 @@
++++ linux/fs/aufs/branch.h 2017-09-13 12:15:05.716013038 +0200
+@@ -0,0 +1,309 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -4288,7 +4423,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h
+ struct path br_path;
+ spinlock_t br_dykey_lock;
+ struct au_dykey *br_dykey[AuBrDynOp];
-+ atomic_t br_count;
++ struct percpu_counter br_count;
+
+ struct au_wbr *br_wbr;
+ struct au_br_fhsm *br_fhsm;
@@ -4323,6 +4458,31 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h
+ return au_br_mnt(br)->mnt_sb;
+}
+
++static inline void au_br_get(struct au_branch *br)
++{
++ percpu_counter_inc(&br->br_count);
++}
++
++static inline void au_br_put(struct au_branch *br)
++{
++ percpu_counter_dec(&br->br_count);
++}
++
++static inline s64 au_br_count(struct au_branch *br)
++{
++ return percpu_counter_sum(&br->br_count);
++}
++
++static inline void au_br_count_init(struct au_branch *br)
++{
++ percpu_counter_init(&br->br_count, 0, GFP_NOFS);
++}
++
++static inline void au_br_count_fin(struct au_branch *br)
++{
++ percpu_counter_destroy(&br->br_count);
++}
++
+static inline int au_br_rdonly(struct au_branch *br)
+{
+ return ((au_br_sb(br)->s_flags & MS_RDONLY)
@@ -4418,9 +4578,14 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h
+ return au_br_sb(au_sbr(sb, bindex));
+}
+
++static inline void au_sbr_get(struct super_block *sb, aufs_bindex_t bindex)
++{
++ au_br_get(au_sbr(sb, bindex));
++}
++
+static inline void au_sbr_put(struct super_block *sb, aufs_bindex_t bindex)
+{
-+ atomic_dec(&au_sbr(sb, bindex)->br_count);
++ au_br_put(au_sbr(sb, bindex));
+}
+
+static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex)
@@ -4468,7 +4633,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h
+#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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/conf.mk 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,38 @@
+
+AuConfStr = CONFIG_AUFS_FS=${CONFIG_AUFS_FS}
@@ -4510,10 +4675,10 @@ diff -urN /usr/share/empty/fs/aufs/conf.mk linux/fs/aufs/conf.mk
+-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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,1379 @@
++++ linux/fs/aufs/cpup.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,1383 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -4554,7 +4719,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+{
+ struct inode *h_inode;
+
-+ h_inode = au_h_iptr(inode, au_ibstart(inode));
++ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ fsstack_copy_attr_times(inode, h_inode);
+ fsstack_copy_inode_size(inode, h_inode);
+}
@@ -4563,10 +4728,10 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+{
+ struct inode *h_inode;
+ struct super_block *sb;
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+
+ sb = inode->i_sb;
-+ bindex = au_ibstart(inode);
++ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ if (!force
+ && !S_ISDIR(h_inode->i_mode)
@@ -4589,8 +4754,8 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ * it may includes whplink directory.
+ */
+ if (S_ISDIR(h_inode->i_mode)) {
-+ bend = au_ibend(inode);
-+ for (bindex++; bindex <= bend; bindex++) {
++ bbot = au_ibbot(inode);
++ for (bindex++; bindex <= bbot; bindex++) {
+ h_inode = au_h_iptr(inode, bindex);
+ if (h_inode)
+ au_add_nlink(inode, h_inode);
@@ -4602,7 +4767,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+{
+ struct inode *h_inode;
+
-+ h_inode = au_h_iptr(inode, au_ibstart(inode));
++ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ inode->i_mode = h_inode->i_mode;
+ inode->i_uid = h_inode->i_uid;
+ inode->i_gid = h_inode->i_gid;
@@ -4624,7 +4789,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+{
+ struct inode *h_inode;
+
-+ h_inode = au_h_iptr(inode, au_ibstart(inode));
++ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ au_cpup_attr_changeable(inode);
+ if (inode->i_nlink > 0)
+ au_cpup_attr_nlink(inode, force);
@@ -4871,9 +5036,9 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ dst->f_pos = 0;
+ err = au_do_copy_file(dst, src, len, buf, blksize);
+ if (do_kfree)
-+ kfree(buf);
++ au_delayed_kfree(buf);
+ else
-+ free_page((unsigned long)buf);
++ au_delayed_free_page((unsigned long)buf);
+
+out:
+ return err;
@@ -5033,7 +5198,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ sym.k[symlen] = 0;
+ err = vfsub_symlink(h_dir, h_path, sym.k);
+ }
-+ free_page((unsigned long)sym.k);
++ au_delayed_free_page((unsigned long)sym.k);
+
+out:
+ return err;
@@ -5081,7 +5246,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ * particularry setattr case
+ */
+ dir = d_inode(dst_parent);
-+ if (au_ibstart(dir) == cpg->bdst)
++ if (au_ibtop(dir) == cpg->bdst)
+ au_cpup_attr_nlink(dir, /*force*/1);
+ inode = d_inode(cpg->dentry);
+ au_cpup_attr_nlink(inode, /*force*/1);
@@ -5242,7 +5407,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
+{
+ int err, rerr;
-+ aufs_bindex_t old_ibstart;
++ aufs_bindex_t old_ibtop;
+ unsigned char isdir, plink;
+ struct dentry *h_src, *h_dst, *h_parent;
+ struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode;
@@ -5330,7 +5495,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ }
+
+ isdir = S_ISDIR(inode->i_mode);
-+ old_ibstart = au_ibstart(inode);
++ old_ibtop = au_ibtop(inode);
+ err = cpup_entry(cpg, dst_parent, &a->h_src_attr);
+ if (unlikely(err))
+ goto out_rev;
@@ -5347,7 +5512,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ goto out_rev;
+ }
+
-+ if (cpg->bdst < old_ibstart) {
++ if (cpg->bdst < old_ibtop) {
+ if (S_ISREG(inode->i_mode)) {
+ err = au_dy_iaop(inode, cpg->bdst, dst_inode);
+ if (unlikely(err)) {
@@ -5357,9 +5522,9 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ goto out_rev;
+ }
+ }
-+ au_set_ibstart(inode, cpg->bdst);
++ au_set_ibtop(inode, cpg->bdst);
+ } else
-+ au_set_ibend(inode, cpg->bdst);
++ au_set_ibbot(inode, cpg->bdst);
+ au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode),
+ au_hi_flags(inode, isdir));
+
@@ -5404,7 +5569,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ }
+out_parent:
+ dput(dst_parent);
-+ kfree(a);
++ au_delayed_kfree(a);
+out:
+ return err;
+}
@@ -5515,7 +5680,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+
+ /* revert */
+ au_set_h_dptr(dentry, cpg->bdst, NULL);
-+ au_set_dbstart(dentry, cpg->bsrc);
++ au_set_dbtop(dentry, cpg->bsrc);
+ }
+
+ return err;
@@ -5577,20 +5742,20 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+
+int au_sio_cpup_simple(struct au_cp_generic *cpg)
+{
-+ aufs_bindex_t bsrc, bend;
++ aufs_bindex_t bsrc, bbot;
+ struct dentry *dentry, *h_dentry;
+
+ if (cpg->bsrc < 0) {
+ dentry = cpg->dentry;
-+ bend = au_dbend(dentry);
-+ for (bsrc = cpg->bdst + 1; bsrc <= bend; bsrc++) {
++ bbot = au_dbbot(dentry);
++ for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) {
+ h_dentry = au_h_dptr(dentry, bsrc);
+ if (h_dentry) {
+ AuDebugOn(d_is_negative(h_dentry));
+ break;
+ }
+ }
-+ AuDebugOn(bsrc > bend);
++ AuDebugOn(bsrc > bbot);
+ cpg->bsrc = bsrc;
+ }
+ AuDebugOn(cpg->bsrc <= cpg->bdst);
@@ -5614,23 +5779,27 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ int err;
+ unsigned int flags_orig;
+ aufs_bindex_t bsrc_orig;
-+ struct dentry *h_d_dst, *h_d_start;
+ struct au_dinfo *dinfo;
-+ struct au_hdentry *hdp;
++ struct {
++ struct au_hdentry *hd;
++ struct dentry *h_dentry;
++ } hdst, hsrc;
+
+ dinfo = au_di(cpg->dentry);
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ bsrc_orig = cpg->bsrc;
-+ cpg->bsrc = dinfo->di_bstart;
-+ hdp = dinfo->di_hdentry;
-+ h_d_dst = hdp[0 + cpg->bdst].hd_dentry;
-+ dinfo->di_bstart = cpg->bdst;
-+ hdp[0 + cpg->bdst].hd_dentry = wh_dentry;
-+ h_d_start = NULL;
++ cpg->bsrc = dinfo->di_btop;
++ hdst.hd = au_hdentry(dinfo, cpg->bdst);
++ hdst.h_dentry = hdst.hd->hd_dentry;
++ hdst.hd->hd_dentry = wh_dentry;
++ dinfo->di_btop = cpg->bdst;
++
++ hsrc.h_dentry = NULL;
+ if (file) {
-+ h_d_start = hdp[0 + cpg->bsrc].hd_dentry;
-+ hdp[0 + cpg->bsrc].hd_dentry = au_hf_top(file)->f_path.dentry;
++ hsrc.hd = au_hdentry(dinfo, cpg->bsrc);
++ hsrc.h_dentry = hsrc.hd->hd_dentry;
++ hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry;
+ }
+ flags_orig = cpg->flags;
+ cpg->flags = !AuCpup_DTIME;
@@ -5639,10 +5808,10 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ if (file) {
+ if (!err)
+ err = au_reopen_nondir(file);
-+ hdp[0 + cpg->bsrc].hd_dentry = h_d_start;
++ hsrc.hd->hd_dentry = hsrc.h_dentry;
+ }
-+ hdp[0 + cpg->bdst].hd_dentry = h_d_dst;
-+ dinfo->di_bstart = cpg->bsrc;
++ hdst.hd->hd_dentry = hdst.h_dentry;
++ dinfo->di_btop = cpg->bsrc;
+ cpg->bsrc = bsrc_orig;
+
+ return err;
@@ -5826,7 +5995,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+ h_dentry = au_h_dptr(d, bdst);
+ if (!h_dentry || d_is_negative(h_dentry)) {
+ if (h_dentry)
-+ au_update_dbstart(d);
++ au_update_dbtop(d);
+
+ au_pin_set_dentry(&pin, d);
+ err = au_do_pin(&pin);
@@ -5893,10 +6062,10 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/cpup.h 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,94 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -5991,10 +6160,10 @@ diff -urN /usr/share/empty/fs/aufs/cpup.h linux/fs/aufs/cpup.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,432 @@
++++ linux/fs/aufs/dbgaufs.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,438 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -6036,7 +6205,7 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+static int dbgaufs_xi_release(struct inode *inode __maybe_unused,
+ struct file *file)
+{
-+ kfree(file->private_data);
++ au_delayed_kfree(file->private_data);
+ return 0;
+}
+
@@ -6098,7 +6267,7 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+static int dbgaufs_plink_release(struct inode *inode __maybe_unused,
+ struct file *file)
+{
-+ free_page((unsigned long)file->private_data);
++ au_delayed_free_page((unsigned long)file->private_data);
+ return 0;
+}
+
@@ -6162,7 +6331,7 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+ goto out; /* success */
+
+out_free:
-+ free_page((unsigned long)p);
++ au_delayed_free_page((unsigned long)p);
+out:
+ return err;
+}
@@ -6233,7 +6402,7 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+ sbinfo = inode->i_private;
+ sb = sbinfo->si_sb;
+ si_noflush_read_lock(sb);
-+ if (l <= au_sbend(sb)) {
++ if (l <= au_sbbot(sb)) {
+ xf = au_sbr(sb, (aufs_bindex_t)l)->br_xino.xi_file;
+ err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1);
+ } else
@@ -6253,18 +6422,21 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+
+void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
+{
-+ aufs_bindex_t bend;
++ aufs_bindex_t bbot;
+ struct au_branch *br;
+ struct au_xino_file *xi;
+
+ if (!au_sbi(sb)->si_dbgaufs)
+ return;
+
-+ bend = au_sbend(sb);
-+ for (; bindex <= bend; bindex++) {
++ bbot = au_sbbot(sb);
++ for (; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ xi = &br->br_xino;
++ /* debugfs acquires the parent i_mutex */
++ lockdep_off();
+ debugfs_remove(xi->xi_dbgaufs);
++ lockdep_on();
+ xi->xi_dbgaufs = NULL;
+ }
+}
@@ -6275,7 +6447,7 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+ struct dentry *parent;
+ struct au_branch *br;
+ struct au_xino_file *xi;
-+ aufs_bindex_t bend;
++ aufs_bindex_t bbot;
+ char name[sizeof(DbgaufsXi_PREFIX) + 5]; /* "xi" bindex NULL */
+
+ sbinfo = au_sbi(sb);
@@ -6283,14 +6455,17 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+ if (!parent)
+ return;
+
-+ bend = au_sbend(sb);
-+ for (; bindex <= bend; bindex++) {
++ bbot = au_sbbot(sb);
++ for (; bindex <= bbot; bindex++) {
+ snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex);
+ br = au_sbr(sb, bindex);
+ xi = &br->br_xino;
+ AuDebugOn(xi->xi_dbgaufs);
++ /* debugfs acquires the parent i_mutex */
++ lockdep_off();
+ xi->xi_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent,
+ sbinfo, &dbgaufs_xino_fop);
++ lockdep_on();
+ /* ignore an error */
+ if (unlikely(!xi->xi_dbgaufs))
+ AuWarn1("failed %s under debugfs\n", name);
@@ -6427,10 +6602,10 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/dbgaufs.h 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,48 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -6479,10 +6654,10 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.h linux/fs/aufs/dbgaufs.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,224 @@
++++ linux/fs/aufs/dcsub.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,225 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -6512,7 +6687,7 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
+ p = dpage->dentries;
+ for (i = 0; i < dpage->ndentry; i++)
+ dput(*p++);
-+ free_page((unsigned long)dpage->dentries);
++ au_delayed_free_page((unsigned long)dpage->dentries);
+}
+
+int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp)
@@ -6535,7 +6710,7 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
+ return 0; /* success */
+
+out_dpages:
-+ kfree(dpages->dpages);
++ au_delayed_kfree(dpages->dpages);
+out:
+ return err;
+}
@@ -6548,7 +6723,7 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
+ p = dpages->dpages;
+ for (i = 0; i < dpages->ndpage; i++)
+ au_dpage_free(p++);
-+ kfree(dpages->dpages);
++ au_delayed_kfree(dpages->dpages);
+}
+
+static int au_dpages_append(struct au_dcsub_pages *dpages,
@@ -6565,7 +6740,8 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
+ err = -ENOMEM;
+ sz = dpages->ndpage * sizeof(*dpages->dpages);
+ p = au_kzrealloc(dpages->dpages, sz,
-+ sz + sizeof(*dpages->dpages), gfp);
++ sz + sizeof(*dpages->dpages), gfp,
++ /*may_shrink*/0);
+ if (unlikely(!p))
+ goto out;
+
@@ -6707,10 +6883,10 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/dcsub.h 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,136 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -6847,10 +7023,10 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.h linux/fs/aufs/dcsub.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,438 @@
++++ linux/fs/aufs/debug.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,440 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -6992,25 +7168,24 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+void au_dpri_inode(struct inode *inode)
+{
+ struct au_iinfo *iinfo;
++ struct au_hinode *hi;
+ aufs_bindex_t bindex;
+ int err, hn;
+
+ err = do_pri_inode(-1, inode, -1, NULL);
-+ if (err || !au_test_aufs(inode->i_sb))
++ if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode))
+ return;
+
+ iinfo = au_ii(inode);
-+ if (!iinfo)
-+ return;
-+ dpri("i-1: bstart %d, bend %d, gen %d\n",
-+ iinfo->ii_bstart, iinfo->ii_bend, au_iigen(inode, NULL));
-+ if (iinfo->ii_bstart < 0)
++ dpri("i-1: btop %d, bbot %d, gen %d\n",
++ iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL));
++ if (iinfo->ii_btop < 0)
+ return;
+ hn = 0;
-+ for (bindex = iinfo->ii_bstart; bindex <= iinfo->ii_bend; bindex++) {
-+ hn = !!au_hn(iinfo->ii_hinode + bindex);
-+ do_pri_inode(bindex, iinfo->ii_hinode[0 + bindex].hi_inode, hn,
-+ iinfo->ii_hinode[0 + bindex].hi_whdentry);
++ for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) {
++ hi = au_hinode(iinfo, bindex);
++ hn = !!au_hn(hi);
++ do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry);
+ }
+}
+
@@ -7028,7 +7203,9 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+{
+ struct dentry *wh = NULL;
+ int hn;
++ struct inode *inode;
+ struct au_iinfo *iinfo;
++ struct au_hinode *hi;
+
+ if (!dentry || IS_ERR(dentry)) {
+ dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
@@ -7042,16 +7219,19 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+ au_dcount(dentry), dentry->d_flags,
+ d_unhashed(dentry) ? "un" : "");
+ hn = -1;
-+ if (bindex >= 0
-+ && d_is_positive(dentry)
-+ && au_test_aufs(dentry->d_sb)) {
-+ iinfo = au_ii(d_inode(dentry));
-+ if (iinfo) {
-+ hn = !!au_hn(iinfo->ii_hinode + bindex);
-+ wh = iinfo->ii_hinode[0 + bindex].hi_whdentry;
-+ }
-+ }
-+ do_pri_inode(bindex, d_inode(dentry), hn, wh);
++ inode = NULL;
++ if (d_is_positive(dentry))
++ inode = d_inode(dentry);
++ if (inode
++ && au_test_aufs(dentry->d_sb)
++ && bindex >= 0
++ && !au_is_bad_inode(inode)) {
++ iinfo = au_ii(inode);
++ hi = au_hinode(iinfo, bindex);
++ hn = !!au_hn(hi);
++ wh = hi->hi_whdentry;
++ }
++ do_pri_inode(bindex, inode, hn, wh);
+ return 0;
+}
+
@@ -7060,7 +7240,6 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+ struct au_dinfo *dinfo;
+ aufs_bindex_t bindex;
+ int err;
-+ struct au_hdentry *hdp;
+
+ err = do_pri_dentry(-1, dentry);
+ if (err || !au_test_aufs(dentry->d_sb))
@@ -7069,15 +7248,14 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+ dinfo = au_di(dentry);
+ if (!dinfo)
+ return;
-+ dpri("d-1: bstart %d, bend %d, bwh %d, bdiropq %d, gen %d, tmp %d\n",
-+ dinfo->di_bstart, dinfo->di_bend,
++ dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n",
++ dinfo->di_btop, dinfo->di_bbot,
+ dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry),
+ dinfo->di_tmpfile);
-+ if (dinfo->di_bstart < 0)
++ if (dinfo->di_btop < 0)
+ return;
-+ hdp = dinfo->di_hdentry;
-+ for (bindex = dinfo->di_bstart; bindex <= dinfo->di_bend; bindex++)
-+ do_pri_dentry(bindex, hdp[0 + bindex].hd_dentry);
++ for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++)
++ do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry);
+}
+
+static int do_pri_file(aufs_bindex_t bindex, struct file *file)
@@ -7148,10 +7326,10 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+ if (!sb || IS_ERR(sb))
+ goto out;
+
-+ dpri("s%d: {perm 0x%x, id %d, cnt %d, wbr %p}, "
++ dpri("s%d: {perm 0x%x, id %d, cnt %lld, wbr %p}, "
+ "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, "
+ "xino %d\n",
-+ bindex, br->br_perm, br->br_id, atomic_read(&br->br_count),
++ bindex, br->br_perm, br->br_id, au_br_count(br),
+ br->br_wbr, au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev),
+ sb->s_flags, sb->s_count,
+ atomic_read(&sb->s_active), !!br->br_xino.xi_file);
@@ -7182,10 +7360,10 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+
+ a->mnt.mnt_sb = sb;
+ a->fake.br_path.mnt = &a->mnt;
-+ atomic_set(&a->fake.br_count, 0);
-+ smp_mb(); /* atomic_set */
++ au_br_count_init(&a->fake);
+ err = do_pri_br(-1, &a->fake);
-+ kfree(a);
++ au_br_count_fin(&a->fake);
++ au_delayed_kfree(a);
+ dpri("dev 0x%x\n", sb->s_dev);
+ if (err || !au_test_aufs(sb))
+ return;
@@ -7196,7 +7374,7 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+ dpri("nw %d, gen %u, kobj %d\n",
+ atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation,
+ atomic_read(&sbinfo->si_kobj.kref.refcount));
-+ for (bindex = 0; bindex <= sbinfo->si_bend; bindex++)
++ for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++)
+ do_pri_br(bindex, sbinfo->si_branch[0 + bindex]);
+}
+
@@ -7206,21 +7384,21 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+{
+ struct inode *h_inode, *inode = d_inode(dentry);
+ struct dentry *h_dentry;
-+ aufs_bindex_t bindex, bend, bi;
++ aufs_bindex_t bindex, bbot, bi;
+
+ if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */)
+ return;
+
-+ bend = au_dbend(dentry);
-+ bi = au_ibend(inode);
-+ if (bi < bend)
-+ bend = bi;
-+ bindex = au_dbstart(dentry);
-+ bi = au_ibstart(inode);
++ bbot = au_dbbot(dentry);
++ bi = au_ibbot(inode);
++ if (bi < bbot)
++ bbot = bi;
++ bindex = au_dbtop(dentry);
++ bi = au_ibtop(inode);
+ if (bi > bindex)
+ bindex = bi;
+
-+ for (; bindex <= bend; bindex++) {
++ for (; bindex <= bbot; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
@@ -7289,10 +7467,10 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/debug.h 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,225 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -7518,10 +7696,10 @@ diff -urN /usr/share/empty/fs/aufs/debug.h linux/fs/aufs/debug.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,1136 @@
++++ linux/fs/aufs/dentry.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,1130 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -7544,14 +7722,6 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+#include <linux/namei.h>
+#include "aufs.h"
+
-+#define AuLkup_ALLOW_NEG 1
-+#define AuLkup_IGNORE_PERM (1 << 1)
-+#define au_ftest_lkup(flags, name) ((flags) & AuLkup_##name)
-+#define au_fset_lkup(flags, name) \
-+ do { (flags) |= AuLkup_##name; } while (0)
-+#define au_fclr_lkup(flags, name) \
-+ do { (flags) &= ~AuLkup_##name; } while (0)
-+
+struct au_do_lookup_args {
+ unsigned int flags;
+ mode_t type;
@@ -7579,7 +7749,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ br = au_sbr(dentry->d_sb, bindex);
+ wh_able = !!au_br_whable(br->br_perm);
+ if (wh_able)
-+ wh_found = au_wh_test(h_parent, wh_name, /*try_sio*/0);
++ wh_found = au_wh_test(h_parent, wh_name, ignore_perm);
+ h_dentry = ERR_PTR(wh_found);
+ if (!wh_found)
+ goto real_lookup;
@@ -7587,7 +7757,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ goto out;
+
+ /* We found a whiteout */
-+ /* au_set_dbend(dentry, bindex); */
++ /* au_set_dbbot(dentry, bindex); */
+ au_set_dbwh(dentry, bindex);
+ if (!allow_neg)
+ return NULL; /* success */
@@ -7612,10 +7782,10 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ || (args->type && args->type != (h_inode->i_mode & S_IFMT)))
+ goto out_neg;
+
-+ if (au_dbend(dentry) <= bindex)
-+ au_set_dbend(dentry, bindex);
-+ if (au_dbstart(dentry) < 0 || bindex < au_dbstart(dentry))
-+ au_set_dbstart(dentry, bindex);
++ if (au_dbbot(dentry) <= bindex)
++ au_set_dbbot(dentry, bindex);
++ if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
++ au_set_dbtop(dentry, bindex);
+ au_set_h_dptr(dentry, bindex, h_dentry);
+
+ if (!d_is_dir(h_dentry)
@@ -7654,15 +7824,15 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ * otherwise an error.
+ * can be called at unlinking with @type is zero.
+ */
-+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t bstart, mode_t type)
++int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
++ unsigned int flags)
+{
+ int npositive, err;
+ aufs_bindex_t bindex, btail, bdiropq;
+ unsigned char isdir, dirperm1;
+ struct qstr whname;
+ struct au_do_lookup_args args = {
-+ .flags = 0,
-+ .type = type
++ .flags = flags
+ };
+ const struct qstr *name = &dentry->d_name;
+ struct dentry *parent;
@@ -7678,14 +7848,12 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ goto out;
+
+ isdir = !!d_is_dir(dentry);
-+ if (!type)
-+ au_fset_lkup(args.flags, ALLOW_NEG);
+ dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1);
+
+ npositive = 0;
+ parent = dget_parent(dentry);
+ btail = au_dbtaildir(parent);
-+ for (bindex = bstart; bindex <= btail; bindex++) {
++ for (bindex = btop; bindex <= btail; bindex++) {
+ struct dentry *h_parent, *h_dentry;
+ struct inode *h_inode, *h_dir;
+
@@ -7693,9 +7861,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ if (h_dentry) {
+ if (d_is_positive(h_dentry))
+ npositive++;
-+ if (type != S_IFDIR)
-+ break;
-+ continue;
++ break;
+ }
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || !d_is_dir(h_parent))
@@ -7736,11 +7902,11 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+
+ if (npositive) {
+ AuLabel(positive);
-+ au_update_dbstart(dentry);
++ au_update_dbtop(dentry);
+ }
+ err = npositive;
+ if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE)
-+ && au_dbstart(dentry) < 0)) {
++ && au_dbtop(dentry) < 0)) {
+ err = -EIO;
+ AuIOErr("both of real entry and whiteout found, %pd, err %d\n",
+ dentry, err);
@@ -7748,7 +7914,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+
+out_parent:
+ dput(parent);
-+ kfree(whname.name);
++ au_delayed_kfree(whname.name);
+out:
+ return err;
+}
@@ -7802,10 +7968,10 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ }
+
+ err = 0;
-+ if (bindex < au_dbstart(dentry))
-+ au_set_dbstart(dentry, bindex);
-+ if (au_dbend(dentry) < bindex)
-+ au_set_dbend(dentry, bindex);
++ if (bindex < au_dbtop(dentry))
++ au_set_dbtop(dentry, bindex);
++ if (au_dbbot(dentry) < bindex)
++ au_set_dbbot(dentry, bindex);
+ au_set_h_dptr(dentry, bindex, h_dentry);
+
+out:
@@ -7917,7 +8083,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent)
+{
+ int err;
-+ aufs_bindex_t new_bindex, bindex, bend, bwh, bdiropq;
++ aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq;
+ struct au_hdentry tmp, *p, *q;
+ struct au_dinfo *dinfo;
+ struct super_block *sb;
@@ -7926,11 +8092,12 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+
+ sb = dentry->d_sb;
+ dinfo = au_di(dentry);
-+ bend = dinfo->di_bend;
++ bbot = dinfo->di_bbot;
+ bwh = dinfo->di_bwh;
+ bdiropq = dinfo->di_bdiropq;
-+ p = dinfo->di_hdentry + dinfo->di_bstart;
-+ for (bindex = dinfo->di_bstart; bindex <= bend; bindex++, p++) {
++ bindex = dinfo->di_btop;
++ p = au_hdentry(dinfo, bindex);
++ for (; bindex <= bbot; bindex++, p++) {
+ if (!p->hd_dentry)
+ continue;
+
@@ -7949,7 +8116,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ }
+
+ /* swap two lower dentries, and loop again */
-+ q = dinfo->di_hdentry + new_bindex;
++ q = au_hdentry(dinfo, new_bindex);
+ tmp = *q;
+ *q = *p;
+ *p = tmp;
@@ -7960,31 +8127,33 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ }
+
+ dinfo->di_bwh = -1;
-+ if (bwh >= 0 && bwh <= au_sbend(sb) && au_sbr_whable(sb, bwh))
++ if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh))
+ dinfo->di_bwh = bwh;
+
+ dinfo->di_bdiropq = -1;
+ if (bdiropq >= 0
-+ && bdiropq <= au_sbend(sb)
++ && bdiropq <= au_sbbot(sb)
+ && au_sbr_whable(sb, bdiropq))
+ dinfo->di_bdiropq = bdiropq;
+
+ err = -EIO;
-+ dinfo->di_bstart = -1;
-+ dinfo->di_bend = -1;
-+ bend = au_dbend(parent);
-+ p = dinfo->di_hdentry;
-+ for (bindex = 0; bindex <= bend; bindex++, p++)
++ dinfo->di_btop = -1;
++ dinfo->di_bbot = -1;
++ bbot = au_dbbot(parent);
++ bindex = 0;
++ p = au_hdentry(dinfo, bindex);
++ for (; bindex <= bbot; bindex++, p++)
+ if (p->hd_dentry) {
-+ dinfo->di_bstart = bindex;
++ dinfo->di_btop = bindex;
+ break;
+ }
+
-+ if (dinfo->di_bstart >= 0) {
-+ p = dinfo->di_hdentry + bend;
-+ for (bindex = bend; bindex >= 0; bindex--, p--)
++ if (dinfo->di_btop >= 0) {
++ bindex = bbot;
++ p = au_hdentry(dinfo, bindex);
++ for (; bindex >= 0; bindex--, p--)
+ if (p->hd_dentry) {
-+ dinfo->di_bend = bindex;
++ dinfo->di_bbot = bindex;
+ err = 0;
+ break;
+ }
@@ -8084,7 +8253,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ struct au_dinfo *tmp)
+{
+ int err;
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct {
+ struct dentry *dentry;
+ struct inode *inode;
@@ -8097,16 +8266,16 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ struct dentry *h_dentry;
+
+ err = 0;
-+ AuDebugOn(dinfo->di_bstart < 0);
++ AuDebugOn(dinfo->di_btop < 0);
+ orig_h.mode = 0;
-+ orig_h.dentry = dinfo->di_hdentry[dinfo->di_bstart].hd_dentry;
++ orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry;
+ orig_h.inode = NULL;
+ if (d_is_positive(orig_h.dentry)) {
+ orig_h.inode = d_inode(orig_h.dentry);
+ orig_h.mode = orig_h.inode->i_mode & S_IFMT;
+ }
-+ if (tmp->di_bstart >= 0) {
-+ tmp_h.dentry = tmp->di_hdentry[tmp->di_bstart].hd_dentry;
++ if (tmp->di_btop >= 0) {
++ tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry;
+ if (d_is_positive(tmp_h.dentry)) {
+ tmp_h.inode = d_inode(tmp_h.dentry);
+ tmp_h.mode = tmp_h.inode->i_mode & S_IFMT;
@@ -8123,20 +8292,20 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ goto out;
+ }
+ AuDebugOn(inode);
-+ AuDebugOn(dinfo->di_bstart != dinfo->di_bend);
++ AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
+ AuDebugOn(dinfo->di_bdiropq != -1);
+
+ if (!tmp_h.inode) {
+ AuDbg("negative --> negative\n");
+ /* should have only one negative lower */
-+ if (tmp->di_bstart >= 0
-+ && tmp->di_bstart < dinfo->di_bstart) {
-+ AuDebugOn(tmp->di_bstart != tmp->di_bend);
-+ AuDebugOn(dinfo->di_bstart != dinfo->di_bend);
-+ au_set_h_dptr(dentry, dinfo->di_bstart, NULL);
++ if (tmp->di_btop >= 0
++ && tmp->di_btop < dinfo->di_btop) {
++ AuDebugOn(tmp->di_btop != tmp->di_bbot);
++ AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
++ au_set_h_dptr(dentry, dinfo->di_btop, NULL);
+ au_di_cp(dinfo, tmp);
-+ hd = tmp->di_hdentry + tmp->di_bstart;
-+ au_set_h_dptr(dentry, tmp->di_bstart,
++ hd = au_hdentry(tmp, tmp->di_btop);
++ au_set_h_dptr(dentry, tmp->di_btop,
+ dget(hd->hd_dentry));
+ }
+ au_dbg_verify_dinode(dentry);
@@ -8161,7 +8330,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ AuDbg("positive --> negative\n");
+ /* or bypassing aufs */
+ au_hide(dentry);
-+ if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_bstart)
++ if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop)
+ dinfo->di_bwh = tmp->di_bwh;
+ if (inode)
+ err = au_refresh_hinode_self(inode);
@@ -8169,7 +8338,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ } else if (orig_h.mode == tmp_h.mode) {
+ AuDbg("positive --> positive, same type\n");
+ if (!S_ISDIR(orig_h.mode)
-+ && dinfo->di_bstart > tmp->di_bstart) {
++ && dinfo->di_btop > tmp->di_btop) {
+ /*
+ * similar to the behaviour of removing and
+ * creating.
@@ -8180,19 +8349,19 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ au_dbg_verify_dinode(dentry);
+ } else {
+ /* fill empty slots */
-+ if (dinfo->di_bstart > tmp->di_bstart)
-+ dinfo->di_bstart = tmp->di_bstart;
-+ if (dinfo->di_bend < tmp->di_bend)
-+ dinfo->di_bend = tmp->di_bend;
++ if (dinfo->di_btop > tmp->di_btop)
++ dinfo->di_btop = tmp->di_btop;
++ if (dinfo->di_bbot < tmp->di_bbot)
++ dinfo->di_bbot = tmp->di_bbot;
+ dinfo->di_bwh = tmp->di_bwh;
+ dinfo->di_bdiropq = tmp->di_bdiropq;
-+ hd = tmp->di_hdentry;
-+ bend = dinfo->di_bend;
-+ for (bindex = tmp->di_bstart; bindex <= bend;
-+ bindex++) {
++ bbot = dinfo->di_bbot;
++ bindex = tmp->di_btop;
++ hd = au_hdentry(tmp, bindex);
++ for (; bindex <= bbot; bindex++, hd++) {
+ if (au_h_dptr(dentry, bindex))
+ continue;
-+ h_dentry = hd[bindex].hd_dentry;
++ h_dentry = hd->hd_dentry;
+ if (!h_dentry)
+ continue;
+ AuDebugOn(d_is_negative(h_dentry));
@@ -8203,7 +8372,8 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ au_set_h_dptr(dentry, bindex,
+ dget(h_dentry));
+ }
-+ err = au_refresh_hinode(inode, dentry);
++ if (inode)
++ err = au_refresh_hinode(inode, dentry);
+ au_dbg_verify_dinode(dentry);
+ }
+ } else {
@@ -8244,7 +8414,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent)
+{
-+ int err, ebrange;
++ int err, ebrange, nbr;
+ unsigned int sigen;
+ struct au_dinfo *dinfo, *tmp;
+ struct super_block *sb;
@@ -8260,8 +8430,9 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ if (unlikely(err))
+ goto out;
+
++ nbr = au_sbbot(sb) + 1;
+ dinfo = au_di(dentry);
-+ err = au_di_realloc(dinfo, au_sbend(sb) + 1);
++ err = au_di_realloc(dinfo, nbr, /*may_shrink*/0);
+ if (unlikely(err))
+ goto out;
+ ebrange = au_dbrange_test(dentry);
@@ -8269,7 +8440,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ ebrange = au_do_refresh_hdentry(dentry, parent);
+
+ if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) {
-+ AuDebugOn(au_dbstart(dentry) < 0 && au_dbend(dentry) >= 0);
++ AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0);
+ if (d_really_is_positive(dentry)) {
+ inode = d_inode(dentry);
+ err = au_refresh_hinode_self(inode);
@@ -8292,7 +8463,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ * if current working dir is removed, it returns an error.
+ * but the dentry is legal.
+ */
-+ err = au_lkup_dentry(dentry, /*bstart*/0, /*type*/0);
++ err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
+ AuDbgDentry(dentry);
+ au_di_swap(tmp, dinfo);
+ if (err == -ENOENT)
@@ -8304,6 +8475,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ au_dbg_verify_dinode(dentry);
+ AuTraceErr(err);
+ }
++ au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */
+ au_rw_write_unlock(&tmp->di_rwsem);
+ au_di_free(tmp);
+ if (unlikely(err))
@@ -8355,7 +8527,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+{
+ int err;
+ umode_t mode, h_mode;
-+ aufs_bindex_t bindex, btail, bstart, ibs, ibe;
++ aufs_bindex_t bindex, btail, btop, ibs, ibe;
+ unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile;
+ struct inode *h_inode, *h_cached_inode;
+ struct dentry *h_dentry;
@@ -8381,15 +8553,15 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ if (do_udba && inode) {
+ mode = (inode->i_mode & S_IFMT);
+ plus = (inode->i_nlink > 0);
-+ ibs = au_ibstart(inode);
-+ ibe = au_ibend(inode);
++ ibs = au_ibtop(inode);
++ ibe = au_ibbot(inode);
+ }
+
-+ bstart = au_dbstart(dentry);
-+ btail = bstart;
++ btop = au_dbtop(dentry);
++ btail = btop;
+ if (inode && S_ISDIR(inode->i_mode))
+ btail = au_dbtaildir(dentry);
-+ for (bindex = bstart; bindex <= btail; bindex++) {
++ for (bindex = btop; bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
@@ -8571,7 +8743,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ inode = NULL;
+ if (d_really_is_positive(dentry))
+ inode = d_inode(dentry);
-+ if (unlikely(inode && is_bad_inode(inode))) {
++ if (unlikely(inode && au_is_bad_inode(inode))) {
+ err = -EINVAL;
+ AuTraceErr(err);
+ goto out_dgrade;
@@ -8604,11 +8776,11 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+
+ do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE);
+ if (do_udba && inode) {
-+ aufs_bindex_t bstart = au_ibstart(inode);
++ aufs_bindex_t btop = au_ibtop(inode);
+ struct inode *h_inode;
+
-+ if (bstart >= 0) {
-+ h_inode = au_h_iptr(inode, bstart);
++ if (btop >= 0) {
++ h_inode = au_h_iptr(inode, btop);
+ if (h_inode && au_test_higen(inode, h_inode)) {
+ AuTraceErr(err);
+ goto out_inval;
@@ -8617,7 +8789,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+ }
+
+ err = h_d_revalidate(dentry, inode, flags, do_udba);
-+ if (unlikely(!err && do_udba && au_dbstart(dentry) < 0)) {
++ if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) {
+ err = -EIO;
+ AuDbg("both of real entry and whiteout found, %p, err %d\n",
+ dentry, err);
@@ -8658,10 +8830,10 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c
+};
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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,234 @@
++++ linux/fs/aufs/dentry.h 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,255 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -8698,13 +8870,27 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+ atomic_t di_generation;
+
+ struct au_rwsem di_rwsem;
-+ aufs_bindex_t di_bstart, di_bend, di_bwh, di_bdiropq;
++ aufs_bindex_t di_btop, di_bbot, di_bwh, di_bdiropq;
+ unsigned char di_tmpfile; /* to allow the different name */
-+ struct au_hdentry *di_hdentry;
++ union {
++ struct au_hdentry *di_hdentry;
++ struct llist_node di_lnode; /* delayed free */
++ };
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
++/* flags for au_lkup_dentry() */
++#define AuLkup_ALLOW_NEG 1
++#define AuLkup_IGNORE_PERM (1 << 1)
++#define au_ftest_lkup(flags, name) ((flags) & AuLkup_##name)
++#define au_fset_lkup(flags, name) \
++ do { (flags) |= AuLkup_##name; } while (0)
++#define au_fclr_lkup(flags, name) \
++ do { (flags) &= ~AuLkup_##name; } while (0)
++
++/* ---------------------------------------------------------------------- */
++
+/* dentry.c */
+extern const struct dentry_operations aufs_dop, aufs_dop_noreval;
+struct au_branch;
@@ -8712,7 +8898,8 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+ struct dentry *h_parent, struct au_branch *br);
+
-+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t bstart, mode_t type);
++int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
++ unsigned int flags);
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh);
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent);
+int au_reval_dpath(struct dentry *dentry, unsigned int sigen);
@@ -8726,7 +8913,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src);
+int au_di_init(struct dentry *dentry);
+void au_di_fin(struct dentry *dentry);
-+int au_di_realloc(struct au_dinfo *dinfo, int nbr);
++int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink);
+
+void di_read_lock(struct dentry *d, int flags, unsigned int lsc);
+void di_read_unlock(struct dentry *d, int flags);
@@ -8748,8 +8935,8 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+int au_dbrange_test(struct dentry *dentry);
+void au_update_digen(struct dentry *dentry);
+void au_update_dbrange(struct dentry *dentry, int do_put_zero);
-+void au_update_dbstart(struct dentry *dentry);
-+void au_update_dbend(struct dentry *dentry);
++void au_update_dbtop(struct dentry *dentry);
++void au_update_dbbot(struct dentry *dentry);
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry);
+
+/* ---------------------------------------------------------------------- */
@@ -8820,22 +9007,28 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+ hdentry->hd_dentry = NULL;
+}
+
++static inline struct au_hdentry *au_hdentry(struct au_dinfo *di,
++ aufs_bindex_t bindex)
++{
++ return di->di_hdentry + bindex;
++}
++
+static inline void au_hdput(struct au_hdentry *hd)
+{
+ if (hd)
+ dput(hd->hd_dentry);
+}
+
-+static inline aufs_bindex_t au_dbstart(struct dentry *dentry)
++static inline aufs_bindex_t au_dbtop(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
-+ return au_di(dentry)->di_bstart;
++ return au_di(dentry)->di_btop;
+}
+
-+static inline aufs_bindex_t au_dbend(struct dentry *dentry)
++static inline aufs_bindex_t au_dbbot(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
-+ return au_di(dentry)->di_bend;
++ return au_di(dentry)->di_bbot;
+}
+
+static inline aufs_bindex_t au_dbwh(struct dentry *dentry)
@@ -8851,22 +9044,22 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+}
+
+/* todo: hard/soft set? */
-+static inline void au_set_dbstart(struct dentry *dentry, aufs_bindex_t bindex)
++static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
-+ au_di(dentry)->di_bstart = bindex;
++ au_di(dentry)->di_btop = bindex;
+}
+
-+static inline void au_set_dbend(struct dentry *dentry, aufs_bindex_t bindex)
++static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
-+ au_di(dentry)->di_bend = bindex;
++ au_di(dentry)->di_bbot = bindex;
+}
+
+static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
-+ /* dbwh can be outside of bstart - bend range */
++ /* dbwh can be outside of btop - bbot range */
+ au_di(dentry)->di_bwh = bindex;
+}
+
@@ -8896,10 +9089,10 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,550 @@
++++ linux/fs/aufs/dinfo.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,553 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -8924,10 +9117,8 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+void au_di_init_once(void *_dinfo)
+{
+ struct au_dinfo *dinfo = _dinfo;
-+ static struct lock_class_key aufs_di;
+
+ au_rw_init(&dinfo->di_rwsem);
-+ au_rw_class(&dinfo->di_rwsem, &aufs_di);
+}
+
+struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
@@ -8939,14 +9130,14 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ if (unlikely(!dinfo))
+ goto out;
+
-+ nbr = au_sbend(sb) + 1;
++ nbr = au_sbbot(sb) + 1;
+ if (nbr <= 0)
+ nbr = 1;
+ dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS);
+ if (dinfo->di_hdentry) {
+ au_rw_write_lock_nested(&dinfo->di_rwsem, lsc);
-+ dinfo->di_bstart = -1;
-+ dinfo->di_bend = -1;
++ dinfo->di_btop = -1;
++ dinfo->di_bbot = -1;
+ dinfo->di_bwh = -1;
+ dinfo->di_bdiropq = -1;
+ dinfo->di_tmpfile = 0;
@@ -8955,7 +9146,7 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ goto out;
+ }
+
-+ au_cache_free_dinfo(dinfo);
++ au_cache_dfree_dinfo(dinfo);
+ dinfo = NULL;
+
+out:
@@ -8965,18 +9156,18 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+void au_di_free(struct au_dinfo *dinfo)
+{
+ struct au_hdentry *p;
-+ aufs_bindex_t bend, bindex;
++ aufs_bindex_t bbot, bindex;
+
+ /* dentry may not be revalidated */
-+ bindex = dinfo->di_bstart;
++ bindex = dinfo->di_btop;
+ if (bindex >= 0) {
-+ bend = dinfo->di_bend;
-+ p = dinfo->di_hdentry + bindex;
-+ while (bindex++ <= bend)
++ bbot = dinfo->di_bbot;
++ p = au_hdentry(dinfo, bindex);
++ while (bindex++ <= bbot)
+ au_hdput(p++);
+ }
-+ kfree(dinfo->di_hdentry);
-+ au_cache_free_dinfo(dinfo);
++ au_delayed_kfree(dinfo->di_hdentry);
++ au_cache_dfree_dinfo(dinfo);
+}
+
+void au_di_swap(struct au_dinfo *a, struct au_dinfo *b)
@@ -8995,8 +9186,8 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ } while (0)
+
+ DiSwap(p, hdentry);
-+ DiSwap(bi, bstart);
-+ DiSwap(bi, bend);
++ DiSwap(bi, btop);
++ DiSwap(bi, bbot);
+ DiSwap(bi, bwh);
+ DiSwap(bi, bdiropq);
+ /* smp_mb(); */
@@ -9009,8 +9200,8 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ AuRwMustWriteLock(&dst->di_rwsem);
+ AuRwMustWriteLock(&src->di_rwsem);
+
-+ dst->di_bstart = src->di_bstart;
-+ dst->di_bend = src->di_bend;
++ dst->di_btop = src->di_btop;
++ dst->di_bbot = src->di_bbot;
+ dst->di_bwh = src->di_bwh;
+ dst->di_bdiropq = src->di_bdiropq;
+ /* smp_mb(); */
@@ -9044,7 +9235,7 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ au_di_free(dinfo);
+}
+
-+int au_di_realloc(struct au_dinfo *dinfo, int nbr)
++int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink)
+{
+ int err, sz;
+ struct au_hdentry *hdp;
@@ -9052,10 +9243,11 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ err = -ENOMEM;
-+ sz = sizeof(*hdp) * (dinfo->di_bend + 1);
++ sz = sizeof(*hdp) * (dinfo->di_bbot + 1);
+ if (!sz)
+ sz = sizeof(*hdp);
-+ hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS);
++ hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS,
++ may_shrink);
+ if (hdp) {
+ dinfo->di_hdentry = hdp;
+ err = 0;
@@ -9220,10 +9412,10 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+
+ DiMustAnyLock(dentry);
+
-+ if (au_dbstart(dentry) < 0 || bindex < au_dbstart(dentry))
++ if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
+ return NULL;
+ AuDebugOn(bindex < 0);
-+ d = au_di(dentry)->di_hdentry[0 + bindex].hd_dentry;
++ d = au_hdentry(au_di(dentry), bindex)->hd_dentry;
+ AuDebugOn(d && au_dcount(d) <= 0);
+ return d;
+}
@@ -9241,8 +9433,8 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ AuDebugOn(d_really_is_negative(dentry));
+
+ h_dentry = NULL;
-+ if (au_dbstart(dentry) <= bindex
-+ && bindex <= au_dbend(dentry))
++ if (au_dbtop(dentry) <= bindex
++ && bindex <= au_dbbot(dentry))
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && !au_d_linkable(h_dentry)) {
+ dget(h_dentry);
@@ -9250,8 +9442,8 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ }
+
+ inode = d_inode(dentry);
-+ AuDebugOn(bindex < au_ibstart(inode));
-+ AuDebugOn(au_ibend(inode) < bindex);
++ AuDebugOn(bindex < au_ibtop(inode));
++ AuDebugOn(au_ibbot(inode) < bindex);
+ h_inode = au_h_iptr(inode, bindex);
+ h_dentry = d_find_alias(h_inode);
+ if (h_dentry) {
@@ -9281,30 +9473,30 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+
+aufs_bindex_t au_dbtail(struct dentry *dentry)
+{
-+ aufs_bindex_t bend, bwh;
++ aufs_bindex_t bbot, bwh;
+
-+ bend = au_dbend(dentry);
-+ if (0 <= bend) {
++ bbot = au_dbbot(dentry);
++ if (0 <= bbot) {
+ bwh = au_dbwh(dentry);
+ if (!bwh)
+ return bwh;
-+ if (0 < bwh && bwh < bend)
++ if (0 < bwh && bwh < bbot)
+ return bwh - 1;
+ }
-+ return bend;
++ return bbot;
+}
+
+aufs_bindex_t au_dbtaildir(struct dentry *dentry)
+{
-+ aufs_bindex_t bend, bopq;
++ aufs_bindex_t bbot, bopq;
+
-+ bend = au_dbtail(dentry);
-+ if (0 <= bend) {
++ bbot = au_dbtail(dentry);
++ if (0 <= bbot) {
+ bopq = au_dbdiropq(dentry);
-+ if (0 <= bopq && bopq < bend)
-+ bend = bopq;
++ if (0 <= bopq && bopq < bbot)
++ bbot = bopq;
+ }
-+ return bend;
++ return bbot;
+}
+
+/* ---------------------------------------------------------------------- */
@@ -9312,11 +9504,14 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_dentry)
+{
-+ struct au_hdentry *hd = au_di(dentry)->di_hdentry + bindex;
++ struct au_dinfo *dinfo;
++ struct au_hdentry *hd;
+ struct au_branch *br;
+
+ DiMustWriteLock(dentry);
+
++ dinfo = au_di(dentry);
++ hd = au_hdentry(dinfo, bindex);
+ au_hdput(hd);
+ hd->hd_dentry = h_dentry;
+ if (h_dentry) {
@@ -9328,16 +9523,16 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+int au_dbrange_test(struct dentry *dentry)
+{
+ int err;
-+ aufs_bindex_t bstart, bend;
++ aufs_bindex_t btop, bbot;
+
+ err = 0;
-+ bstart = au_dbstart(dentry);
-+ bend = au_dbend(dentry);
-+ if (bstart >= 0)
-+ AuDebugOn(bend < 0 && bstart > bend);
++ btop = au_dbtop(dentry);
++ bbot = au_dbbot(dentry);
++ if (btop >= 0)
++ AuDebugOn(bbot < 0 && btop > bbot);
+ else {
+ err = -EIO;
-+ AuDebugOn(bend >= 0);
++ AuDebugOn(bbot >= 0);
+ }
+
+ return err;
@@ -9366,72 +9561,73 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+ struct au_dinfo *dinfo;
+ struct dentry *h_d;
+ struct au_hdentry *hdp;
++ aufs_bindex_t bindex, bbot;
+
+ DiMustWriteLock(dentry);
+
+ dinfo = au_di(dentry);
-+ if (!dinfo || dinfo->di_bstart < 0)
++ if (!dinfo || dinfo->di_btop < 0)
+ return;
+
-+ hdp = dinfo->di_hdentry;
+ if (do_put_zero) {
-+ aufs_bindex_t bindex, bend;
-+
-+ bend = dinfo->di_bend;
-+ for (bindex = dinfo->di_bstart; bindex <= bend; bindex++) {
-+ h_d = hdp[0 + bindex].hd_dentry;
++ bbot = dinfo->di_bbot;
++ bindex = dinfo->di_btop;
++ hdp = au_hdentry(dinfo, bindex);
++ for (; bindex <= bbot; bindex++, hdp++) {
++ h_d = hdp->hd_dentry;
+ if (h_d && d_is_negative(h_d))
+ au_set_h_dptr(dentry, bindex, NULL);
+ }
+ }
+
-+ dinfo->di_bstart = -1;
-+ while (++dinfo->di_bstart <= dinfo->di_bend)
-+ if (hdp[0 + dinfo->di_bstart].hd_dentry)
++ dinfo->di_btop = 0;
++ hdp = au_hdentry(dinfo, dinfo->di_btop);
++ for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++)
++ if (hdp->hd_dentry)
+ break;
-+ if (dinfo->di_bstart > dinfo->di_bend) {
-+ dinfo->di_bstart = -1;
-+ dinfo->di_bend = -1;
++ if (dinfo->di_btop > dinfo->di_bbot) {
++ dinfo->di_btop = -1;
++ dinfo->di_bbot = -1;
+ return;
+ }
+
-+ dinfo->di_bend++;
-+ while (0 <= --dinfo->di_bend)
-+ if (hdp[0 + dinfo->di_bend].hd_dentry)
++ hdp = au_hdentry(dinfo, dinfo->di_bbot);
++ for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--)
++ if (hdp->hd_dentry)
+ break;
-+ AuDebugOn(dinfo->di_bstart > dinfo->di_bend || dinfo->di_bend < 0);
++ AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0);
+}
+
-+void au_update_dbstart(struct dentry *dentry)
++void au_update_dbtop(struct dentry *dentry)
+{
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct dentry *h_dentry;
+
-+ bend = au_dbend(dentry);
-+ for (bindex = au_dbstart(dentry); bindex <= bend; bindex++) {
++ bbot = au_dbbot(dentry);
++ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ if (d_is_positive(h_dentry)) {
-+ au_set_dbstart(dentry, bindex);
++ au_set_dbtop(dentry, bindex);
+ return;
+ }
+ au_set_h_dptr(dentry, bindex, NULL);
+ }
+}
+
-+void au_update_dbend(struct dentry *dentry)
++void au_update_dbbot(struct dentry *dentry)
+{
-+ aufs_bindex_t bindex, bstart;
++ aufs_bindex_t bindex, btop;
+ struct dentry *h_dentry;
+
-+ bstart = au_dbstart(dentry);
-+ for (bindex = au_dbend(dentry); bindex >= bstart; bindex--) {
++ btop = au_dbtop(dentry);
++ for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ if (d_is_positive(h_dentry)) {
-+ au_set_dbend(dentry, bindex);
++ au_set_dbbot(dentry, bindex);
+ return;
+ }
+ au_set_h_dptr(dentry, bindex, NULL);
@@ -9440,20 +9636,20 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c
+
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry)
+{
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+
-+ bend = au_dbend(dentry);
-+ for (bindex = au_dbstart(dentry); bindex <= bend; bindex++)
++ bbot = au_dbbot(dentry);
++ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++)
+ if (au_h_dptr(dentry, bindex) == h_dentry)
+ return bindex;
+ return -1;
+}
diff -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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,758 @@
++++ linux/fs/aufs/dir.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,764 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -9509,7 +9705,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+loff_t au_dir_size(struct file *file, struct dentry *dentry)
+{
+ loff_t sz;
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct file *h_file;
+ struct dentry *h_dentry;
+
@@ -9517,9 +9713,9 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ if (file) {
+ AuDebugOn(!d_is_dir(file->f_path.dentry));
+
-+ bend = au_fbend_dir(file);
-+ for (bindex = au_fbstart(file);
-+ bindex <= bend && sz < KMALLOC_MAX_SIZE;
++ bbot = au_fbbot_dir(file);
++ for (bindex = au_fbtop(file);
++ bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+ bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (h_file && file_inode(h_file))
@@ -9529,9 +9725,9 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ AuDebugOn(!dentry);
+ AuDebugOn(!d_is_dir(dentry));
+
-+ bend = au_dbtaildir(dentry);
-+ for (bindex = au_dbstart(dentry);
-+ bindex <= bend && sz < KMALLOC_MAX_SIZE;
++ bbot = au_dbtaildir(dentry);
++ for (bindex = au_dbtop(dentry);
++ bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+ bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && d_is_positive(h_dentry))
@@ -9564,7 +9760,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ struct au_branch *br;
+ struct au_hinode *hdir;
+ int err;
-+ aufs_bindex_t bstart, bindex;
++ aufs_bindex_t btop, bindex;
+
+ sb = a->dentry->d_sb;
+ if (d_really_is_negative(a->dentry))
@@ -9573,9 +9769,9 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ aufs_read_lock(a->dentry, AuLock_DW); /* noflush */
+
+ dir = d_inode(a->dentry);
-+ bstart = au_ibstart(dir);
++ btop = au_ibtop(dir);
+ bindex = au_br_index(sb, a->brid);
-+ if (bindex < bstart)
++ if (bindex < btop)
+ goto out_unlock;
+
+ br = au_sbr(sb, bindex);
@@ -9585,17 +9781,17 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ h_path.mnt = au_br_mnt(br);
+ au_dtime_store(&dt, a->dentry, &h_path);
+
-+ br = au_sbr(sb, bstart);
++ br = au_sbr(sb, btop);
+ if (!au_br_writable(br->br_perm))
+ goto out_unlock;
-+ h_path.dentry = au_h_dptr(a->dentry, bstart);
++ h_path.dentry = au_h_dptr(a->dentry, btop);
+ h_path.mnt = au_br_mnt(br);
+ err = vfsub_mnt_want_write(h_path.mnt);
+ if (err)
+ goto out_unlock;
-+ hdir = au_hi(dir, bstart);
++ hdir = au_hi(dir, btop);
+ au_hn_imtx_lock_nested(hdir, AuLsc_I_PARENT);
-+ h_dir = au_h_iptr(dir, bstart);
++ h_dir = au_h_iptr(dir, btop);
+ if (h_dir->i_nlink
+ && timespec_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) {
+ dt.dt_h_path = h_path;
@@ -9610,13 +9806,13 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+out:
+ dput(a->dentry);
+ au_nwt_done(&au_sbi(sb)->si_nowait);
-+ kfree(arg);
++ au_delayed_kfree(arg);
+}
+
+void au_dir_ts(struct inode *dir, aufs_bindex_t bindex)
+{
+ int perm, wkq_err;
-+ aufs_bindex_t bstart;
++ aufs_bindex_t btop;
+ struct au_dir_ts_arg *arg;
+ struct dentry *dentry;
+ struct super_block *sb;
@@ -9626,13 +9822,13 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ dentry = d_find_any_alias(dir);
+ AuDebugOn(!dentry);
+ sb = dentry->d_sb;
-+ bstart = au_ibstart(dir);
-+ if (bstart == bindex) {
++ btop = au_ibtop(dir);
++ if (btop == bindex) {
+ au_cpup_attr_timesizes(dir);
+ goto out;
+ }
+
-+ perm = au_sbr_perm(sb, bstart);
++ perm = au_sbr_perm(sb, btop);
+ if (!au_br_writable(perm))
+ goto out;
+
@@ -9646,7 +9842,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ if (unlikely(wkq_err)) {
+ pr_err("wkq %d\n", wkq_err);
+ dput(dentry);
-+ kfree(arg);
++ au_delayed_kfree(arg);
+ }
+
+out:
@@ -9659,24 +9855,24 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+{
+ int err;
+ unsigned int flags;
-+ aufs_bindex_t bindex, btail, bstart;
++ aufs_bindex_t bindex, btail, btop;
+ struct dentry *dentry, *h_dentry;
+ struct file *h_file;
+
+ /* open all lower dirs */
+ dentry = file->f_path.dentry;
-+ bstart = au_dbstart(dentry);
-+ for (bindex = au_fbstart(file); bindex < bstart; bindex++)
++ btop = au_dbtop(dentry);
++ for (bindex = au_fbtop(file); bindex < btop; bindex++)
+ au_set_h_fptr(file, bindex, NULL);
-+ au_set_fbstart(file, bstart);
++ au_set_fbtop(file, btop);
+
+ btail = au_dbtaildir(dentry);
-+ for (bindex = au_fbend_dir(file); btail < bindex; bindex--)
++ for (bindex = au_fbbot_dir(file); btail < bindex; bindex--)
+ au_set_h_fptr(file, bindex, NULL);
-+ au_set_fbend_dir(file, btail);
++ au_set_fbbot_dir(file, btail);
+
+ flags = vfsub_file_flags(file);
-+ for (bindex = bstart; bindex <= btail; bindex++) {
++ for (bindex = btop; bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
@@ -9713,10 +9909,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ mnt = file->f_path.mnt;
+ dentry = file->f_path.dentry;
+ file->f_version = d_inode(dentry)->i_version;
-+ bindex = au_dbstart(dentry);
-+ au_set_fbstart(file, bindex);
++ bindex = au_dbtop(dentry);
++ au_set_fbtop(file, bindex);
+ btail = au_dbtaildir(dentry);
-+ au_set_fbend_dir(file, btail);
++ au_set_fbbot_dir(file, btail);
+ for (; !err && bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
@@ -9739,10 +9935,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ return 0; /* success */
+
+ /* close all */
-+ for (bindex = au_fbstart(file); bindex <= btail; bindex++)
++ for (bindex = au_fbtop(file); bindex <= btail; bindex++)
+ au_set_h_fptr(file, bindex, NULL);
-+ au_set_fbstart(file, -1);
-+ au_set_fbend_dir(file, -1);
++ au_set_fbtop(file, -1);
++ au_set_fbbot_dir(file, -1);
+
+ return err;
+}
@@ -9765,7 +9961,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ };
+ err = au_do_open(file, &args);
+ if (unlikely(err))
-+ kfree(fidir);
++ au_delayed_kfree(fidir);
+ }
+ si_read_unlock(sb);
+ return err;
@@ -9777,8 +9973,11 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ struct au_vdir *vdir_cache;
+ struct au_finfo *finfo;
+ struct au_fidir *fidir;
-+ aufs_bindex_t bindex, bend;
++ struct au_hfile *hf;
++ aufs_bindex_t bindex, bbot;
++ int execed, delayed;
+
++ delayed = (current->flags & PF_KTHREAD) || in_interrupt();
+ finfo = au_fi(file);
+ fidir = finfo->fi_hdir;
+ if (fidir) {
@@ -9786,22 +9985,25 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ &au_sbi(file->f_path.dentry->d_sb)->si_files);
+ vdir_cache = fidir->fd_vdir_cache; /* lock-free */
+ if (vdir_cache)
-+ au_vdir_free(vdir_cache);
++ au_vdir_free(vdir_cache, delayed);
+
+ bindex = finfo->fi_btop;
+ if (bindex >= 0) {
++ execed = vfsub_file_execed(file);
++ hf = fidir->fd_hfile + bindex;
+ /*
+ * calls fput() instead of filp_close(),
+ * since no dnotify or lock for the lower file.
+ */
-+ bend = fidir->fd_bbot;
-+ for (; bindex <= bend; bindex++)
-+ au_set_h_fptr(file, bindex, NULL);
++ bbot = fidir->fd_bbot;
++ for (; bindex <= bbot; bindex++, hf++)
++ if (hf->hf_file)
++ au_hfput(hf, execed);
+ }
-+ kfree(fidir);
++ au_delayed_kfree(fidir);
+ finfo->fi_hdir = NULL;
+ }
-+ au_finfo_fin(file);
++ au_finfo_fin(file, delayed);
+ return 0;
+}
+
@@ -9810,12 +10012,12 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+static int au_do_flush_dir(struct file *file, fl_owner_t id)
+{
+ int err;
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct file *h_file;
+
+ err = 0;
-+ bend = au_fbend_dir(file);
-+ for (bindex = au_fbstart(file); !err && bindex <= bend; bindex++) {
++ bbot = au_fbbot_dir(file);
++ for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (h_file)
+ err = vfsub_flush(h_file, id);
@@ -9833,7 +10035,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync)
+{
+ int err;
-+ aufs_bindex_t bend, bindex;
++ aufs_bindex_t bbot, bindex;
+ struct inode *inode;
+ struct super_block *sb;
+
@@ -9841,8 +10043,8 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ sb = dentry->d_sb;
+ inode = d_inode(dentry);
+ IMustLock(inode);
-+ bend = au_dbend(dentry);
-+ for (bindex = au_dbstart(dentry); !err && bindex <= bend; bindex++) {
++ bbot = au_dbbot(dentry);
++ for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) {
+ struct path h_path;
+
+ if (au_test_ro(sb, bindex, inode))
@@ -9861,7 +10063,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+static int au_do_fsync_dir(struct file *file, int datasync)
+{
+ int err;
-+ aufs_bindex_t bend, bindex;
++ aufs_bindex_t bbot, bindex;
+ struct file *h_file;
+ struct super_block *sb;
+ struct inode *inode;
@@ -9872,8 +10074,8 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
-+ bend = au_fbend_dir(file);
-+ for (bindex = au_fbstart(file); !err && bindex <= bend; bindex++) {
++ bbot = au_fbbot_dir(file);
++ for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (!h_file || au_test_ro(sb, bindex, inode))
+ continue;
@@ -9947,7 +10149,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ if (unlikely(err))
+ goto out_unlock;
+
-+ h_inode = au_h_iptr(inode, au_ibstart(inode));
++ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ if (!au_test_nfsd()) {
+ err = au_vdir_fill_de(file, ctx);
+ fsstack_copy_attr_atime(inode, h_inode);
@@ -10116,7 +10318,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+{
+ int err;
+ unsigned int rdhash;
-+ aufs_bindex_t bindex, bstart, btail;
++ aufs_bindex_t bindex, btop, btail;
+ struct au_nhash whlist;
+ struct test_empty_arg arg = {
+ .ctx = {
@@ -10136,20 +10338,20 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+
+ arg.flags = 0;
+ arg.whlist = &whlist;
-+ bstart = au_dbstart(dentry);
++ btop = au_dbtop(dentry);
+ if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+ au_fset_testempty(arg.flags, SHWH);
+ test_empty = do_test_empty;
+ if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1))
+ test_empty = sio_test_empty;
-+ arg.bindex = bstart;
++ arg.bindex = btop;
+ err = test_empty(dentry, &arg);
+ if (unlikely(err))
+ goto out_whlist;
+
+ au_fset_testempty(arg.flags, WHONLY);
+ btail = au_dbtaildir(dentry);
-+ for (bindex = bstart + 1; !err && bindex <= btail; bindex++) {
++ for (bindex = btop + 1; !err && bindex <= btail; bindex++) {
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
@@ -10181,7 +10383,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+ if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+ au_fset_testempty(arg.flags, SHWH);
+ btail = au_dbtaildir(dentry);
-+ for (bindex = au_dbstart(dentry); !err && bindex <= btail; bindex++) {
++ for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) {
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
@@ -10212,10 +10414,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c
+};
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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,131 @@
++++ linux/fs/aufs/dir.h 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,137 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -10258,7 +10460,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h
+
+struct au_vdir_dehstr {
+ struct hlist_node hash;
-+ struct au_vdir_destr *str;
++ union {
++ struct au_vdir_destr *str;
++ struct llist_node lnode; /* delayed free */
++ };
+} ____cacheline_aligned_in_smp;
+
+struct au_vdir_de {
@@ -10296,7 +10501,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h
+
+ unsigned long vd_version;
+ unsigned int vd_deblk_sz;
-+ unsigned long vd_jiffy;
++ union {
++ unsigned long vd_jiffy;
++ struct llist_node vd_lnode; /* delayed free */
++ };
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
@@ -10320,7 +10528,7 @@ diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h
+int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
+ unsigned int d_type, aufs_bindex_t bindex,
+ unsigned char shwh);
-+void au_vdir_free(struct au_vdir *vdir);
++void au_vdir_free(struct au_vdir *vdir, int atonce);
+int au_vdir_init(struct file *file);
+int au_vdir_fill_de(struct file *file, struct dir_context *ctx);
+
@@ -10347,10 +10555,10 @@ diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h
+#endif /* __AUFS_DIR_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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/dynop.c 2017-09-13 12:15:05.719346474 +0200
@@ -0,0 +1,369 @@
+/*
-+ * Copyright (C) 2010-2016 Junjiro R. Okajima
++ * Copyright (C) 2010-2017 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
@@ -10378,17 +10586,17 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+ * How large will these lists be?
+ * Usually just a few elements, 20-30 at most for each, I guess.
+ */
-+static struct au_splhead dynop[AuDyLast];
++static struct au_sphlhead dynop[AuDyLast];
+
-+static struct au_dykey *dy_gfind_get(struct au_splhead *spl, const void *h_op)
++static struct au_dykey *dy_gfind_get(struct au_sphlhead *sphl, const void *h_op)
+{
+ struct au_dykey *key, *tmp;
-+ struct list_head *head;
++ struct hlist_head *head;
+
+ key = NULL;
-+ head = &spl->head;
++ head = &sphl->head;
+ rcu_read_lock();
-+ list_for_each_entry_rcu(tmp, head, dk_list)
++ hlist_for_each_entry_rcu(tmp, head, dk_hnode)
+ if (tmp->dk_op.dy_hop == h_op) {
+ key = tmp;
+ kref_get(&key->dk_kref);
@@ -10435,24 +10643,24 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+}
+
+/* kref_get() if @key is already added */
-+static struct au_dykey *dy_gadd(struct au_splhead *spl, struct au_dykey *key)
++static struct au_dykey *dy_gadd(struct au_sphlhead *sphl, struct au_dykey *key)
+{
+ struct au_dykey *tmp, *found;
-+ struct list_head *head;
++ struct hlist_head *head;
+ const void *h_op = key->dk_op.dy_hop;
+
+ found = NULL;
-+ head = &spl->head;
-+ spin_lock(&spl->spin);
-+ list_for_each_entry(tmp, head, dk_list)
++ head = &sphl->head;
++ spin_lock(&sphl->spin);
++ hlist_for_each_entry(tmp, head, dk_hnode)
+ if (tmp->dk_op.dy_hop == h_op) {
+ kref_get(&tmp->dk_kref);
+ found = tmp;
+ break;
+ }
+ if (!found)
-+ list_add_rcu(&key->dk_list, head);
-+ spin_unlock(&spl->spin);
++ hlist_add_head_rcu(&key->dk_hnode, head);
++ spin_unlock(&sphl->spin);
+
+ if (!found)
+ DyPrSym(key);
@@ -10465,17 +10673,17 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+
+ key = container_of(rcu, struct au_dykey, dk_rcu);
+ DyPrSym(key);
-+ kfree(key);
++ kfree(key); /* not delayed */
+}
+
+static void dy_free(struct kref *kref)
+{
+ struct au_dykey *key;
-+ struct au_splhead *spl;
++ struct au_sphlhead *sphl;
+
+ key = container_of(kref, struct au_dykey, dk_kref);
-+ spl = dynop + key->dk_op.dy_type;
-+ au_spl_del_rcu(&key->dk_list, spl);
++ sphl = dynop + key->dk_op.dy_type;
++ au_sphl_del_rcu(&key->dk_hnode, sphl);
+ call_rcu(&key->dk_rcu, dy_free_rcu);
+}
+
@@ -10560,7 +10768,7 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br)
+{
+ struct au_dykey *key, *old;
-+ struct au_splhead *spl;
++ struct au_sphlhead *sphl;
+ struct op {
+ unsigned int sz;
+ void (*set)(struct au_dykey *key, const void *h_op,
@@ -10574,8 +10782,8 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+ };
+ const struct op *p;
+
-+ spl = dynop + op->dy_type;
-+ key = dy_gfind_get(spl, op->dy_hop);
++ sphl = dynop + op->dy_type;
++ key = dy_gfind_get(sphl, op->dy_hop);
+ if (key)
+ goto out_add; /* success */
+
@@ -10589,9 +10797,9 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+ key->dk_op.dy_hop = op->dy_hop;
+ kref_init(&key->dk_kref);
+ p->set(key, op->dy_hop, au_br_sb(br));
-+ old = dy_gadd(spl, key);
++ old = dy_gadd(sphl, key);
+ if (old) {
-+ kfree(key);
++ au_delayed_kfree(key);
+ key = old;
+ }
+
@@ -10672,30 +10880,30 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+int au_dy_irefresh(struct inode *inode)
+{
+ int err;
-+ aufs_bindex_t bstart;
++ aufs_bindex_t btop;
+ struct inode *h_inode;
+
+ err = 0;
+ if (S_ISREG(inode->i_mode)) {
-+ bstart = au_ibstart(inode);
-+ h_inode = au_h_iptr(inode, bstart);
-+ err = au_dy_iaop(inode, bstart, h_inode);
++ btop = au_ibtop(inode);
++ h_inode = au_h_iptr(inode, btop);
++ err = au_dy_iaop(inode, btop, h_inode);
+ }
+ return err;
+}
+
+void au_dy_arefresh(int do_dx)
+{
-+ struct au_splhead *spl;
-+ struct list_head *head;
++ struct au_sphlhead *sphl;
++ struct hlist_head *head;
+ struct au_dykey *key;
+
-+ spl = dynop + AuDy_AOP;
-+ head = &spl->head;
-+ spin_lock(&spl->spin);
-+ list_for_each_entry(key, head, dk_list)
++ sphl = dynop + AuDy_AOP;
++ head = &sphl->head;
++ spin_lock(&sphl->spin);
++ hlist_for_each_entry(key, head, dk_hnode)
+ dy_adx((void *)key, do_dx);
-+ spin_unlock(&spl->spin);
++ spin_unlock(&sphl->spin);
+}
+
+/* ---------------------------------------------------------------------- */
@@ -10708,7 +10916,7 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+ BUILD_BUG_ON(offsetof(struct au_dyaop, da_key));
+
+ for (i = 0; i < AuDyLast; i++)
-+ au_spl_init(dynop + i);
++ au_sphl_init(dynop + i);
+}
+
+void au_dy_fin(void)
@@ -10716,14 +10924,14 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c
+ int i;
+
+ for (i = 0; i < AuDyLast; i++)
-+ WARN_ON(!list_empty(&dynop[i].head));
++ WARN_ON(!hlist_empty(&dynop[i].head));
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/dynop.h 2017-07-29 12:14:25.899708630 +0200
@@ -0,0 +1,74 @@
+/*
-+ * Copyright (C) 2010-2016 Junjiro R. Okajima
++ * Copyright (C) 2010-2017 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
@@ -10763,7 +10971,7 @@ diff -urN /usr/share/empty/fs/aufs/dynop.h linux/fs/aufs/dynop.h
+
+struct au_dykey {
+ union {
-+ struct list_head dk_list;
++ struct hlist_node dk_hnode;
+ struct rcu_head dk_rcu;
+ };
+ struct au_dynop dk_op;
@@ -10798,10 +11006,10 @@ diff -urN /usr/share/empty/fs/aufs/dynop.h linux/fs/aufs/dynop.h
+#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 2016-02-28 11:26:44.740228806 +0100
-@@ -0,0 +1,832 @@
++++ linux/fs/aufs/export.c 2017-09-13 12:15:05.719346474 +0200
+@@ -0,0 +1,838 @@
+/*
-+ * Copyright (C) 2005-2016 Junjiro R. Okajima
++ * Copyright (C) 2005-2017 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
@@ -10827,7 +11035,6 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+#include <linux/nsproxy.h>
+#include <linux/random.h>
+#include <linux/writeback.h>
-+#include "../fs/mount.h"
+#include "aufs.h"
+
+union conv {
@@ -11035,7 +11242,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+
+ dentry = ERR_PTR(-ESTALE);
+ sigen = au_sigen(sb);
-+ if (unlikely(is_bad_inode(inode)
++ if (unlikely(au_is_bad_inode(inode)
+ || IS_DEADDIR(inode)
+ || sigen != au_iigen(inode, NULL)))
+ goto out_iput;
@@ -11221,7 +11428,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ }
+
+out_name:
-+ free_page((unsigned long)arg.name);
++ au_delayed_free_page((unsigned long)arg.name);
+out_file:
+ fput(file);
+out:
@@ -11317,9 +11524,11 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ h_mnt = au_br_mnt(br);
+ h_sb = h_mnt->mnt_sb;
+ /* todo: call lower fh_to_dentry()? fh_to_parent()? */
++ lockdep_off();
+ h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail),
+ fh_len - Fh_tail, fh[Fh_h_type],
+ h_acceptable, /*context*/NULL);
++ lockdep_on();
+ dentry = h_parent;
+ if (unlikely(!h_parent || IS_ERR(h_parent))) {
+ AuWarn1("%s decode_fh failed, %ld\n",
@@ -11373,7 +11582,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ dentry = ERR_PTR(-ESTALE);
+ }
+out_pathname:
-+ free_page((unsigned long)pathname);
++ au_delayed_free_page((unsigned long)pathname);
+out_h_parent:
+ dput(h_parent);
+out:
@@ -11423,7 +11632,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+
+ /* is the parent dir cached? */
+ br = au_sbr(sb, nsi_lock.bindex);
-+ atomic_inc(&br->br_count);
++ au_br_get(br);
+ dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock);
+ if (IS_ERR(dentry))
+ goto out_unlock;
@@ -11447,7 +11656,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ dentry = ERR_PTR(-ESTALE);
+out_unlock:
+ if (br)
-+ atomic_dec(&br->br_count);
++ au_br_put(br);
+ si_read_unlock(sb);
+out:
+ AuTraceErrPtr(dentry);
@@ -11514,7 +11723,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ err = -EIO;
+ parent = NULL;
+ ii_read_lock_child(inode);
-+ bindex = au_ibstart(inode);
++ bindex = au_ibtop(inode);
+ if (!dir) {
+ dentry = d_find_any_alias(inode);
+ if (unlikely(!dentry))
@@ -11589,7 +11798,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+ ii_write_lock_child(inode);
-+ bindex = au_ibstart(inode);
++ bindex = au_ibtop(inode);
+ AuDebugOn(bindex < 0);
+ h_inode = au_h_iptr(inode, bindex);
+
@@ -11625,6 +11834,11 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+ struct au_sbinfo *sbinfo;
+ __u32 u;
+
++ BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS)
++ && IS_MODULE(CONFIG_EXPORTFS),
++ AUFS_NAME ": unsupported configuration "
++ "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y");
++
+ sb->s_export_op = &aufs_export_op;
+ sbinfo = au_sbi(sb);
+ sbinfo->si_xigen = NULL;
@@ -11634,10 +11848,10 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c
+}
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 2016-02-28 11:26:44.740228806 +0100
++++ linux/fs/aufs/fhsm.c 2017-07-29 12:14:25.903042072 +0200
@@ -0,0 +1,426 @@
+/*
-+ * Copyright (C) 2011-2016 Junjiro R. Okajima
++ * Copyright (C) 2011-2017 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
@@ -11793,12 +12007,12 @@ diff -urN /usr/share/empty/fs/aufs/fhsm.c linux/fs/aufs/fhsm.c
+
+void au_fhsm_wrote_all(struct super_block *sb, int force)
+{
-+ aufs_bindex_t bindex, bend;
++ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
<Skipped 7022 lines>
================================================================
---- gitweb:
http://git.pld-linux.org/gitweb.cgi/packages/kernel.git/commitdiff/98a46a8c9ef0a8dd1e294bf7d5b96fb2f995b403
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