[packages/kernel] - update aufs patch

arekm arekm at pld-linux.org
Sat Dec 17 12:41:55 CET 2016


commit f2c43d5f9be66527e3189ec126a8f04f1f4d2107
Author: Arkadiusz Miśkiewicz <arekm at maven.pl>
Date:   Sat Dec 17 12:34:00 2016 +0100

    - update aufs patch

 kernel-aufs4.patch | 1154 ++++++++++++++++++++++++++++++----------------------
 1 file changed, 664 insertions(+), 490 deletions(-)
---
diff --git a/kernel-aufs4.patch b/kernel-aufs4.patch
index 2a028f1..16f65cb 100644
--- a/kernel-aufs4.patch
+++ b/kernel-aufs4.patch
@@ -1,10 +1,10 @@
-aufs4.x-rcN kbuild patch
+aufs4.9 kbuild patch
 
 diff --git a/fs/Kconfig b/fs/Kconfig
-index 2bc7ad7..3049386 100644
+index 4bd03a2..620e01b 100644
 --- a/fs/Kconfig
 +++ b/fs/Kconfig
-@@ -245,6 +245,7 @@ source "fs/pstore/Kconfig"
+@@ -249,6 +249,7 @@ source "fs/pstore/Kconfig"
  source "fs/sysv/Kconfig"
  source "fs/ufs/Kconfig"
  source "fs/exofs/Kconfig"
@@ -22,7 +22,7 @@ index ed2b632..aa6d14b 100644
  obj-$(CONFIG_EFIVAR_FS)		+= efivarfs/
 +obj-$(CONFIG_AUFS_FS)           += aufs/
 diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
-index 185f8ea..5deb0d1 100644
+index cd2be1c..78f3c68 100644
 --- a/include/uapi/linux/Kbuild
 +++ b/include/uapi/linux/Kbuild
 @@ -59,6 +59,7 @@ header-y += atmsvc.h
@@ -33,13 +33,13 @@ index 185f8ea..5deb0d1 100644
  header-y += auto_fs4.h
  header-y += auto_fs.h
  header-y += auxvec.h
-aufs4.x-rcN base patch
+aufs4.9 base patch
 
 diff --git a/MAINTAINERS b/MAINTAINERS
-index f593300..8a17054 100644
+index 63cefa6..d78b954 100644
 --- a/MAINTAINERS
 +++ b/MAINTAINERS
-@@ -2256,6 +2256,19 @@ F:	include/linux/audit.h
+@@ -2293,6 +2293,19 @@ F:	include/linux/audit.h
  F:	include/uapi/linux/audit.h
  F:	kernel/audit*
  
@@ -60,7 +60,7 @@ index f593300..8a17054 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 c9f2107..005e292 100644
+index fa1b7a9..6ee9235 100644
 --- a/drivers/block/loop.c
 +++ b/drivers/block/loop.c
 @@ -701,6 +701,24 @@ static inline int is_loop_device(struct file *file)
@@ -124,10 +124,10 @@ index 350a2c8..6f42279 100644
  		return error;
  
 diff --git a/fs/inode.c b/fs/inode.c
-index 7e3ef3a..675fe84 100644
+index 88110fd..9a9ba3a 100644
 --- a/fs/inode.c
 +++ b/fs/inode.c
-@@ -1593,7 +1593,7 @@ EXPORT_SYMBOL(generic_update_time);
+@@ -1642,7 +1642,7 @@ int generic_update_time(struct inode *inode, struct timespec *time, int flags)
   * This does the actual work of updating an inodes time or version.  Must have
   * had called mnt_want_write() before calling this.
   */
@@ -137,7 +137,7 @@ index 7e3ef3a..675fe84 100644
  	int (*update_time)(struct inode *, struct timespec *, int);
  
 diff --git a/fs/read_write.c b/fs/read_write.c
-index 66215a7..a1da117 100644
+index 190e0d36..4052813 100644
 --- a/fs/read_write.c
 +++ b/fs/read_write.c
 @@ -515,6 +515,28 @@ ssize_t __vfs_write(struct file *file, const char __user *p, size_t count,
@@ -170,10 +170,10 @@ index 66215a7..a1da117 100644
  {
  	mm_segment_t old_fs;
 diff --git a/fs/splice.c b/fs/splice.c
-index dd9bf7e..9326c2a 100644
+index 5a7750b..28160a7 100644
 --- a/fs/splice.c
 +++ b/fs/splice.c
-@@ -1111,8 +1111,8 @@ EXPORT_SYMBOL(generic_splice_sendpage);
+@@ -855,8 +855,8 @@ ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out,
  /*
   * Attempt to initiate a splice from pipe to file.
   */
@@ -184,7 +184,7 @@ index dd9bf7e..9326c2a 100644
  {
  	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
  				loff_t *, size_t, unsigned int);
-@@ -1128,9 +1128,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+@@ -872,9 +872,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
  /*
   * Attempt to initiate a splice from a file to a pipe.
   */
@@ -201,7 +201,7 @@ diff --git a/include/linux/file.h b/include/linux/file.h
 index 7444f5f..bdac0be 100644
 --- a/include/linux/file.h
 +++ b/include/linux/file.h
-@@ -19,6 +19,7 @@ struct dentry;
+@@ -19,6 +19,7 @@
  struct path;
  extern struct file *alloc_file(struct path *, fmode_t mode,
  	const struct file_operations *fop);
@@ -210,10 +210,10 @@ index 7444f5f..bdac0be 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 901e25d..a71aa9e 100644
+index dc0478c..27c05e7 100644
 --- a/include/linux/fs.h
 +++ b/include/linux/fs.h
-@@ -1275,6 +1275,7 @@ extern void fasync_free(struct fasync_struct *);
+@@ -1291,6 +1291,7 @@ struct fasync_struct {
  /* can be called from interrupts */
  extern void kill_fasync(struct fasync_struct **, int, int);
  
@@ -221,7 +221,7 @@ index 901e25d..a71aa9e 100644
  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);
-@@ -1699,6 +1700,7 @@ struct file_operations {
+@@ -1715,6 +1716,7 @@ 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);
@@ -229,7 +229,7 @@ index 901e25d..a71aa9e 100644
  	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);
-@@ -1759,6 +1761,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
+@@ -1768,6 +1770,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
  			      struct iovec *fast_pointer,
  			      struct iovec **ret_pointer);
  
@@ -242,7 +242,7 @@ index 901e25d..a71aa9e 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 *);
-@@ -2123,6 +2131,7 @@ extern int current_umask(void);
+@@ -2140,6 +2148,7 @@ extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
  extern void ihold(struct inode * inode);
  extern void iput(struct inode *);
  extern int generic_update_time(struct inode *, struct timespec *, int);
@@ -251,10 +251,10 @@ index 901e25d..a71aa9e 100644
  /* /sys/fs */
  extern struct kobject *fs_kobj;
 diff --git a/include/linux/splice.h b/include/linux/splice.h
-index da2751d..2e0fca6 100644
+index 00a2116..1f0a4a2 100644
 --- a/include/linux/splice.h
 +++ b/include/linux/splice.h
-@@ -83,4 +83,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *);
+@@ -86,4 +86,10 @@ extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
  
  extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
  extern const struct pipe_buf_operations default_pipe_buf_ops;
@@ -265,13 +265,13 @@ index da2751d..2e0fca6 100644
 +			 struct pipe_inode_info *pipe, size_t len,
 +			 unsigned int flags);
  #endif
-aufs4.x-rcN mmap patch
+aufs4.9 mmap patch
 
 diff --git a/fs/proc/base.c b/fs/proc/base.c
-index ac0df4d..42255e5 100644
+index ca651ac..0e8551a 100644
 --- a/fs/proc/base.c
 +++ b/fs/proc/base.c
-@@ -1938,7 +1938,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
+@@ -1953,7 +1953,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
  	down_read(&mm->mmap_sem);
  	vma = find_exact_vma(mm, vm_start, vm_end);
  	if (vma && vma->vm_file) {
@@ -297,10 +297,10 @@ index f8595e8..cb8eda0 100644
  		ino = inode->i_ino;
  	}
 diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
-index f6fa99e..2750949 100644
+index 35b92d8..5b981db 100644
 --- a/fs/proc/task_mmu.c
 +++ b/fs/proc/task_mmu.c
-@@ -298,7 +298,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
+@@ -291,7 +291,10 @@ static int is_stack(struct proc_maps_private *priv,
  	const char *name = NULL;
  
  	if (file) {
@@ -312,7 +312,7 @@ index f6fa99e..2750949 100644
  		dev = inode->i_sb->s_dev;
  		ino = inode->i_ino;
  		pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
-@@ -1634,7 +1637,7 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
+@@ -1627,7 +1630,7 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
  	struct proc_maps_private *proc_priv = &numa_priv->proc_maps;
  	struct vm_area_struct *vma = v;
  	struct numa_maps *md = &numa_priv->md;
@@ -322,10 +322,10 @@ index f6fa99e..2750949 100644
  	struct mm_walk walk = {
  		.hugetlb_entry = gather_hugetlb_stats,
 diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
-index faacb0c..17b43be 100644
+index 3717562..6a328f1 100644
 --- a/fs/proc/task_nommu.c
 +++ b/fs/proc/task_nommu.c
-@@ -163,7 +163,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
+@@ -155,7 +155,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
  	file = vma->vm_file;
  
  	if (file) {
@@ -338,40 +338,40 @@ index faacb0c..17b43be 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 ef815b9..a772481 100644
+index a92c8d7..1d83a2a 100644
 --- a/include/linux/mm.h
 +++ b/include/linux/mm.h
-@@ -1266,6 +1266,28 @@ static inline int fixup_user_fault(struc
+@@ -1266,6 +1266,28 @@ static inline int fixup_user_fault(struct task_struct *tsk,
  }
  #endif
  
 +extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int);
 +extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[],
-+		int);
++				      int);
 +extern void vma_do_get_file(struct vm_area_struct *, const char[], int);
 +extern void vma_do_fput(struct vm_area_struct *, const char[], int);
 +
-+#define vma_file_update_time(vma)      vma_do_file_update_time(vma, __func__, \
-+		__LINE__)
-+#define vma_pr_or_file(vma)            vma_do_pr_or_file(vma, __func__, \
-+		__LINE__)
-+#define vma_get_file(vma)              vma_do_get_file(vma, __func__, __LINE__)
-+#define vma_fput(vma)                  vma_do_fput(vma, __func__, __LINE__)
++#define vma_file_update_time(vma)	vma_do_file_update_time(vma, __func__, \
++								__LINE__)
++#define vma_pr_or_file(vma)		vma_do_pr_or_file(vma, __func__, \
++							  __LINE__)
++#define vma_get_file(vma)		vma_do_get_file(vma, __func__, __LINE__)
++#define vma_fput(vma)			vma_do_fput(vma, __func__, __LINE__)
 +
 +#ifndef CONFIG_MMU
 +extern struct file *vmr_do_pr_or_file(struct vm_region *, const char[], int);
 +extern void vmr_do_fput(struct vm_region *, const char[], int);
 +
-+#define vmr_pr_or_file(region)         vmr_do_pr_or_file(region, __func__, \
-+		__LINE__)
-+#define vmr_fput(region)               vmr_do_fput(region, __func__, __LINE__)
++#define vmr_pr_or_file(region)		vmr_do_pr_or_file(region, __func__, \
++							  __LINE__)
++#define vmr_fput(region)		vmr_do_fput(region, __func__, __LINE__)
 +#endif /* !CONFIG_MMU */
 +
  extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len,
  		unsigned int gup_flags);
  extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
 diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
-index 903200f..55fc528 100644
+index 4a8aced..badd16b 100644
 --- a/include/linux/mm_types.h
 +++ b/include/linux/mm_types.h
 @@ -275,6 +275,7 @@ struct vm_region {
@@ -391,10 +391,10 @@ index 903200f..55fc528 100644
  
  #ifndef CONFIG_MMU
 diff --git a/kernel/fork.c b/kernel/fork.c
-index beb3172..ad4cfa8 100644
+index 997ac1d..4d0131b 100644
 --- a/kernel/fork.c
 +++ b/kernel/fork.c
-@@ -477,7 +477,7 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
+@@ -624,7 +624,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
  			struct inode *inode = file_inode(file);
  			struct address_space *mapping = file->f_mapping;
  
@@ -404,10 +404,10 @@ index beb3172..ad4cfa8 100644
  				atomic_dec(&inode->i_writecount);
  			i_mmap_lock_write(mapping);
 diff --git a/mm/Makefile b/mm/Makefile
-index 2ca1faf..6b9da3f 100644
+index 295bd7a..14fa1c8 100644
 --- a/mm/Makefile
 +++ b/mm/Makefile
-@@ -40,7 +40,7 @@ obj-y			:= filemap.o mempool.o oom_kill.o \
+@@ -37,7 +37,7 @@ obj-y			:= filemap.o mempool.o oom_kill.o \
  			   mm_init.o mmu_context.o percpu.o slab_common.o \
  			   compaction.o vmacache.o \
  			   interval_tree.o list_lru.o workingset.o \
@@ -417,10 +417,10 @@ index 2ca1faf..6b9da3f 100644
  obj-y += init-mm.o
  
 diff --git a/mm/filemap.c b/mm/filemap.c
-index 2d0986a..4a31bad 100644
+index 50b52fe..9e607f9 100644
 --- a/mm/filemap.c
 +++ b/mm/filemap.c
-@@ -2284,7 +2284,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+@@ -2304,7 +2304,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
  	int ret = VM_FAULT_LOCKED;
  
  	sb_start_pagefault(inode->i_sb);
@@ -430,10 +430,10 @@ index 2d0986a..4a31bad 100644
  	if (page->mapping != inode->i_mapping) {
  		unlock_page(page);
 diff --git a/mm/memory.c b/mm/memory.c
-index 793fe0f..45f39f3 100644
+index e18c57b..7be4a39 100644
 --- a/mm/memory.c
 +++ b/mm/memory.c
-@@ -2113,7 +2113,7 @@ static inline int wp_page_reuse(struct fault_env *fe, pte_t orig_pte,
+@@ -2117,7 +2117,7 @@ static inline int wp_page_reuse(struct fault_env *fe, pte_t orig_pte,
  		}
  
  		if (!page_mkwrite)
@@ -443,10 +443,10 @@ index 793fe0f..45f39f3 100644
  
  	return VM_FAULT_WRITE;
 diff --git a/mm/mmap.c b/mm/mmap.c
-index ca9d91b..f3ebc5a 100644
+index 1af87c1..95b0ff4 100644
 --- a/mm/mmap.c
 +++ b/mm/mmap.c
-@@ -163,7 +163,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
+@@ -170,7 +170,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
  	if (vma->vm_ops && vma->vm_ops->close)
  		vma->vm_ops->close(vma);
  	if (vma->vm_file)
@@ -455,7 +455,7 @@ index ca9d91b..f3ebc5a 100644
  	mpol_put(vma_policy(vma));
  	kmem_cache_free(vm_area_cachep, vma);
  	return next;
-@@ -790,7 +790,7 @@ again:
+@@ -879,7 +879,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
  	if (remove_next) {
  		if (file) {
  			uprobe_munmap(next, next->vm_start, next->vm_end);
@@ -464,7 +464,7 @@ index ca9d91b..f3ebc5a 100644
  		}
  		if (next->anon_vma)
  			anon_vma_merge(vma, next);
-@@ -1574,8 +1574,8 @@ out:
+@@ -1727,8 +1727,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
  	return addr;
  
  unmap_and_free_vma:
@@ -474,7 +474,7 @@ index ca9d91b..f3ebc5a 100644
  
  	/* Undo any partial mapping done by a device driver. */
  	unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
-@@ -2380,7 +2380,7 @@ static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
+@@ -2533,7 +2533,7 @@ static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
  		goto out_free_mpol;
  
  	if (new->vm_file)
@@ -483,7 +483,7 @@ index ca9d91b..f3ebc5a 100644
  
  	if (new->vm_ops && new->vm_ops->open)
  		new->vm_ops->open(new);
-@@ -2399,7 +2399,7 @@ static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
+@@ -2552,7 +2552,7 @@ static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
  	if (new->vm_ops && new->vm_ops->close)
  		new->vm_ops->close(new);
  	if (new->vm_file)
@@ -492,7 +492,7 @@ index ca9d91b..f3ebc5a 100644
  	unlink_anon_vmas(new);
   out_free_mpol:
  	mpol_put(vma_policy(new));
-@@ -2550,7 +2550,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+@@ -2703,7 +2703,7 @@ int vm_munmap(unsigned long start, size_t len)
  	struct vm_area_struct *vma;
  	unsigned long populate = 0;
  	unsigned long ret = -EINVAL;
@@ -501,7 +501,7 @@ index ca9d91b..f3ebc5a 100644
  
  	pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt.\n",
  		     current->comm, current->pid);
-@@ -2625,10 +2625,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
+@@ -2778,10 +2778,27 @@ int vm_munmap(unsigned long start, size_t len)
  		}
  	}
  
@@ -530,7 +530,7 @@ index ca9d91b..f3ebc5a 100644
  out:
  	up_write(&mm->mmap_sem);
  	if (populate)
-@@ -2903,7 +2920,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
+@@ -3056,7 +3073,7 @@ 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)
@@ -540,10 +540,10 @@ index ca9d91b..f3ebc5a 100644
  			new_vma->vm_ops->open(new_vma);
  		vma_link(mm, new_vma, prev, rb_link, rb_parent);
 diff --git a/mm/nommu.c b/mm/nommu.c
-index 95daf81..5086a29 100644
+index 8b8faaf..5d26ed94 100644
 --- a/mm/nommu.c
 +++ b/mm/nommu.c
-@@ -644,7 +644,7 @@ static void __put_nommu_region(struct vm_region *region)
+@@ -636,7 +636,7 @@ static void __put_nommu_region(struct vm_region *region)
  		up_write(&nommu_region_sem);
  
  		if (region->vm_file)
@@ -552,7 +552,7 @@ index 95daf81..5086a29 100644
  
  		/* IO memory and memory shared directly out of the pagecache
  		 * from ramfs/tmpfs mustn't be released here */
-@@ -802,7 +802,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
+@@ -794,7 +794,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
  	if (vma->vm_ops && vma->vm_ops->close)
  		vma->vm_ops->close(vma);
  	if (vma->vm_file)
@@ -561,7 +561,7 @@ index 95daf81..5086a29 100644
  	put_nommu_region(vma->vm_region);
  	kmem_cache_free(vm_area_cachep, vma);
  }
-@@ -1328,7 +1328,7 @@ unsigned long do_mmap(struct file *file,
+@@ -1320,7 +1320,7 @@ unsigned long do_mmap(struct file *file,
  					goto error_just_free;
  				}
  			}
@@ -570,7 +570,7 @@ index 95daf81..5086a29 100644
  			kmem_cache_free(vm_region_jar, region);
  			region = pregion;
  			result = start;
-@@ -1403,10 +1403,10 @@ error_just_free:
+@@ -1395,10 +1395,10 @@ unsigned long do_mmap(struct file *file,
  	up_write(&nommu_region_sem);
  error:
  	if (region->vm_file)
@@ -675,13 +675,13 @@ index 0000000..b323b8a
 +		fput(pr);
 +}
 +#endif /* !CONFIG_MMU */
-aufs4.x-rcN standalone patch
+aufs4.9 standalone patch
 
 diff --git a/fs/dcache.c b/fs/dcache.c
-index df0268c..76280ee 100644
+index df0268c..755fea1 100644
 --- a/fs/dcache.c
 +++ b/fs/dcache.c
-@@ -1272,6 +1272,7 @@ rename_retry:
+@@ -1272,6 +1272,7 @@ void d_walk(struct dentry *parent, void *data,
  	seq = 1;
  	goto again;
  }
@@ -689,8 +689,16 @@ index df0268c..76280ee 100644
  
  /*
   * Search for at least 1 mount point in the dentry's subdirs.
+@@ -2855,6 +2856,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2)
+ 
+ 	write_sequnlock(&rename_lock);
+ }
++EXPORT_SYMBOL_GPL(d_exchange);
+ 
+ /**
+  * d_ancestor - search for an ancestor
 diff --git a/fs/exec.c b/fs/exec.c
-index 6fcfb3f..ed9d646 100644
+index 4e497b9..e27d323 100644
 --- a/fs/exec.c
 +++ b/fs/exec.c
 @@ -104,6 +104,7 @@ bool path_noexec(const struct path *path)
@@ -717,7 +725,7 @@ diff --git a/fs/file_table.c b/fs/file_table.c
 index ad17e05..ae9f267 100644
 --- a/fs/file_table.c
 +++ b/fs/file_table.c
-@@ -147,6 +147,7 @@ over:
+@@ -147,6 +147,7 @@ struct file *get_empty_filp(void)
  	}
  	return ERR_PTR(-ENFILE);
  }
@@ -750,10 +758,10 @@ index ad17e05..ae9f267 100644
  void __init files_init(void)
  { 
 diff --git a/fs/inode.c b/fs/inode.c
-index 675fe84..da063d3 100644
+index 9a9ba3a..a3a18d8 100644
 --- a/fs/inode.c
 +++ b/fs/inode.c
-@@ -1602,6 +1602,7 @@ int update_time(struct inode *inode, struct timespec *time, int flags)
+@@ -1651,6 +1651,7 @@ int update_time(struct inode *inode, struct timespec *time, int flags)
  
  	return update_time(inode, time, flags);
  }
@@ -762,10 +770,10 @@ index 675fe84..da063d3 100644
  /**
   *	touch_atime	-	update the access time
 diff --git a/fs/namespace.c b/fs/namespace.c
-index 7bb2cda..88ec098 100644
+index e6c234b..8d13f7b 100644
 --- a/fs/namespace.c
 +++ b/fs/namespace.c
-@@ -463,6 +463,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
+@@ -466,6 +466,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
  	mnt_dec_writers(real_mount(mnt));
  	preempt_enable();
  }
@@ -773,7 +781,7 @@ index 7bb2cda..88ec098 100644
  
  /**
   * mnt_drop_write - give up write access to a mount
-@@ -1812,6 +1813,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
+@@ -1823,6 +1824,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
  	}
  	return 0;
  }
@@ -782,7 +790,7 @@ index 7bb2cda..88ec098 100644
  static void cleanup_group_ids(struct mount *mnt, struct mount *end)
  {
 diff --git a/fs/notify/group.c b/fs/notify/group.c
-index b47f7cf..618bc9e 100644
+index fbe3cbe..bdfc61e 100644
 --- a/fs/notify/group.c
 +++ b/fs/notify/group.c
 @@ -22,6 +22,7 @@
@@ -837,7 +845,7 @@ index d3fea0b..5fc06ad 100644
  
  void fsnotify_destroy_marks(struct hlist_head *head, spinlock_t *lock)
  {
-@@ -415,6 +417,7 @@ err:
+@@ -415,6 +417,7 @@ int fsnotify_add_mark_locked(struct fsnotify_mark *mark,
  
  	return ret;
  }
@@ -854,7 +862,7 @@ index d3fea0b..5fc06ad 100644
  /*
   * Destroy all marks in destroy_list, waits for SRCU period to finish before
 diff --git a/fs/open.c b/fs/open.c
-index 4fd6e25..ec6f532 100644
+index d3ed817..20d2494 100644
 --- a/fs/open.c
 +++ b/fs/open.c
 @@ -64,6 +64,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
@@ -865,7 +873,7 @@ index 4fd6e25..ec6f532 100644
  
  long vfs_truncate(const struct path *path, loff_t length)
  {
-@@ -678,6 +679,7 @@ int open_check_o_direct(struct file *f)
+@@ -695,6 +696,7 @@ int open_check_o_direct(struct file *f)
  	}
  	return 0;
  }
@@ -874,7 +882,7 @@ index 4fd6e25..ec6f532 100644
  static int do_dentry_open(struct file *f,
  			  struct inode *inode,
 diff --git a/fs/read_write.c b/fs/read_write.c
-index a1da117..c643215 100644
+index 4052813..7dfd732 100644
 --- a/fs/read_write.c
 +++ b/fs/read_write.c
 @@ -525,6 +525,7 @@ vfs_readf_t vfs_readf(struct file *file)
@@ -894,10 +902,10 @@ index a1da117..c643215 100644
  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 9326c2a..0606690 100644
+index 28160a7..98c1902 100644
 --- a/fs/splice.c
 +++ b/fs/splice.c
-@@ -1124,6 +1124,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+@@ -868,6 +868,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
  
  	return splice_write(pipe, out, ppos, len, flags);
  }
@@ -905,7 +913,7 @@ index 9326c2a..0606690 100644
  
  /*
   * Attempt to initiate a splice from a file to a pipe.
-@@ -1153,6 +1154,7 @@ long do_splice_to(struct file *in, loff_t *ppos,
+@@ -897,6 +898,7 @@ long do_splice_to(struct file *in, loff_t *ppos,
  
  	return splice_read(in, ppos, pipe, len, flags);
  }
@@ -914,17 +922,17 @@ index 9326c2a..0606690 100644
  /**
   * splice_direct_to_actor - splices data directly between two non-pipes
 diff --git a/fs/xattr.c b/fs/xattr.c
-index c243905..b60dc60 100644
+index 2d13b4e..41c2bcd 100644
 --- a/fs/xattr.c
 +++ b/fs/xattr.c
-@@ -214,6 +214,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
+@@ -296,6 +296,7 @@ int __vfs_setxattr_noperm(struct dentry *dentry, const char *name,
  	*xattr_value = value;
  	return error;
  }
 +EXPORT_SYMBOL_GPL(vfs_getxattr_alloc);
  
  ssize_t
- vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
+ __vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
 diff --git a/kernel/task_work.c b/kernel/task_work.c
 index d513051..e056d54 100644
 --- a/kernel/task_work.c
@@ -935,10 +943,10 @@ index d513051..e056d54 100644
  }
 +EXPORT_SYMBOL_GPL(task_work_run);
 diff --git a/security/commoncap.c b/security/commoncap.c
-index 14540bd..4e3b242 100644
+index 8df676f..6b5cc07 100644
 --- a/security/commoncap.c
 +++ b/security/commoncap.c
-@@ -1066,12 +1066,14 @@ int cap_mmap_addr(unsigned long addr)
+@@ -1061,12 +1061,14 @@ int cap_mmap_addr(unsigned long addr)
  	}
  	return ret;
  }
@@ -974,10 +982,10 @@ index 03c1652..f88c84b 100644
  int devcgroup_inode_mknod(int mode, dev_t dev)
  {
 diff --git a/security/security.c b/security/security.c
-index 4838e7f..36c741e 100644
+index f825304..8dd441d 100644
 --- a/security/security.c
 +++ b/security/security.c
-@@ -434,6 +434,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
+@@ -443,6 +443,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
  		return 0;
  	return call_int_hook(path_rmdir, 0, dir, dentry);
  }
@@ -985,7 +993,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_unlink(const struct path *dir, struct dentry *dentry)
  {
-@@ -450,6 +451,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
+@@ -459,6 +460,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
  		return 0;
  	return call_int_hook(path_symlink, 0, dir, dentry, old_name);
  }
@@ -993,7 +1001,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
  		       struct dentry *new_dentry)
-@@ -458,6 +460,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
+@@ -467,6 +469,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
  		return 0;
  	return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
  }
@@ -1001,7 +1009,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
  			 const struct path *new_dir, struct dentry *new_dentry,
-@@ -485,6 +488,7 @@ int security_path_truncate(const struct path *path)
+@@ -494,6 +497,7 @@ int security_path_truncate(const struct path *path)
  		return 0;
  	return call_int_hook(path_truncate, 0, path);
  }
@@ -1009,7 +1017,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_chmod(const struct path *path, umode_t mode)
  {
-@@ -492,6 +496,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
+@@ -501,6 +505,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
  		return 0;
  	return call_int_hook(path_chmod, 0, path, mode);
  }
@@ -1017,7 +1025,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
  {
-@@ -499,6 +504,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
+@@ -508,6 +513,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
  		return 0;
  	return call_int_hook(path_chown, 0, path, uid, gid);
  }
@@ -1025,7 +1033,7 @@ index 4838e7f..36c741e 100644
  
  int security_path_chroot(const struct path *path)
  {
-@@ -584,6 +590,7 @@ int security_inode_readlink(struct dentry *dentry)
+@@ -593,6 +599,7 @@ int security_inode_readlink(struct dentry *dentry)
  		return 0;
  	return call_int_hook(inode_readlink, 0, dentry);
  }
@@ -1033,7 +1041,7 @@ index 4838e7f..36c741e 100644
  
  int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
  			       bool rcu)
-@@ -599,6 +606,7 @@ int security_inode_permission(struct inode *inode, int mask)
+@@ -608,6 +615,7 @@ int security_inode_permission(struct inode *inode, int mask)
  		return 0;
  	return call_int_hook(inode_permission, 0, inode, mask);
  }
@@ -1041,7 +1049,7 @@ index 4838e7f..36c741e 100644
  
  int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
  {
-@@ -758,6 +766,7 @@ int security_file_permission(struct file *file, int mask)
+@@ -779,6 +787,7 @@ int security_file_permission(struct file *file, int mask)
  
  	return fsnotify_perm(file, mask);
  }
@@ -1049,7 +1057,7 @@ index 4838e7f..36c741e 100644
  
  int security_file_alloc(struct file *file)
  {
-@@ -817,6 +826,7 @@ int security_mmap_file(struct file *file, unsigned long prot,
+@@ -838,6 +847,7 @@ int security_mmap_file(struct file *file, unsigned long prot,
  		return ret;
  	return ima_file_mmap(file, prot);
  }
@@ -2405,8 +2413,8 @@ 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	2016-10-09 16:55:36.479367956 +0200
-@@ -0,0 +1,392 @@
++++ linux/Documentation/filesystems/aufs/README	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,393 @@
 +
 +Aufs4 -- advanced multi layered unification filesystem version 4.x
 +http://aufs.sf.net
@@ -2782,6 +2790,7 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta
 +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
@@ -4635,8 +4644,8 @@ 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	2016-10-09 16:55:38.886097714 +0200
-@@ -0,0 +1,1391 @@
++++ linux/fs/aufs/cpup.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,1394 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -5358,7 +5367,8 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
 +	IMustLock(h_dir);
 +	AuDbg("%pd %pd\n", h_dentry, h_path->dentry);
 +	/* no delegation since it is just created */
-+	err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL);
++	err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL,
++			   /*flags*/0);
 +	dput(h_path->dentry);
 +
 +out:
@@ -5371,6 +5381,8 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c
 + * @len is for truncating when it is -1 copyup the entire file.
 + * in link/rename cases, @dst_parent may be different from the real one.
 + * basic->bsrc can be larger than basic->bdst.
++ * aufs doesn't touch the credential so
++ * security_inode_copy_up{,_xattr}() are unnecrssary.
 + */
 +static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
 +{
@@ -10974,8 +10986,8 @@ 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	2016-10-09 16:55:36.489368218 +0200
-@@ -0,0 +1,837 @@
++++ linux/fs/aufs/export.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,836 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -11003,7 +11015,6 @@ 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 {
@@ -13559,8 +13570,8 @@ diff -urN /usr/share/empty/fs/aufs/finfo.c linux/fs/aufs/finfo.c
 +}
 diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c
 --- /usr/share/empty/fs/aufs/f_op.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/f_op.c	2016-10-09 16:55:36.489368218 +0200
-@@ -0,0 +1,772 @@
++++ linux/fs/aufs/f_op.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,723 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -14193,54 +14204,6 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c
 +	return err;
 +}
 +
-+/* no one supports this operation, currently */
-+#if 0
-+static int aufs_aio_fsync_nondir(struct kiocb *kio, int datasync)
-+{
-+	int err;
-+	struct au_write_pre wpre;
-+	struct inode *inode, *h_inode;
-+	struct file *file, *h_file;
-+
-+	err = 0; /* -EBADF; */ /* posix? */
-+	if (unlikely(!(file->f_mode & FMODE_WRITE)))
-+		goto out;
-+
-+	file = kio->ki_filp;
-+	inode = file_inode(file);
-+	au_mtx_and_read_lock(inode);
-+
-+	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
-+	err = PTR_ERR(h_file);
-+	if (IS_ERR(h_file))
-+		goto out_unlock;
-+
-+	err = -ENOSYS;
-+	h_file = au_hf_top(file);
-+	if (h_file->f_op->aio_fsync) {
-+		h_inode = file_inode(h_file);
-+		if (!is_sync_kiocb(kio)) {
-+			get_file(h_file);
-+			fput(file);
-+		}
-+		kio->ki_filp = h_file;
-+		err = h_file->f_op->aio_fsync(kio, datasync);
-+		inode_lock_nested(h_inode, AuLsc_I_CHILD);
-+		if (!err)
-+			vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL);
-+		/*ignore*/
-+		inode_unlock(h_inode);
-+	}
-+	au_write_post(inode, h_file, &wpre, /*written*/0);
-+
-+out_unlock:
-+	si_read_unlock(inode->sb);
-+	inode_unlock(inode);
-+out:
-+	return err;
-+}
-+#endif
-+
 +static int aufs_fasync(int fd, struct file *file, int flag)
 +{
 +	int err;
@@ -14321,7 +14284,6 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c
 +	.flush		= aufs_flush_nondir,
 +	.release	= aufs_release_nondir,
 +	.fsync		= aufs_fsync_nondir,
-+	/* .aio_fsync	= aufs_aio_fsync_nondir, */
 +	.fasync		= aufs_fasync,
 +	/* .sendpage	= aufs_sendpage, */
 +	.setfl		= aufs_setfl,
@@ -16629,8 +16591,8 @@ diff -urN /usr/share/empty/fs/aufs/inode.c linux/fs/aufs/inode.c
 +}
 diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
 --- /usr/share/empty/fs/aufs/inode.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/inode.h	2016-10-09 16:55:38.889431135 +0200
-@@ -0,0 +1,700 @@
++++ linux/fs/aufs/inode.h	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,691 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -16871,7 +16833,8 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
 +/* i_op_ren.c */
 +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt);
 +int aufs_rename(struct inode *src_dir, struct dentry *src_dentry,
-+		struct inode *dir, struct dentry *dentry);
++		struct inode *dir, struct dentry *dentry,
++		unsigned int flags);
 +
 +/* iinfo.c */
 +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex);
@@ -16944,17 +16907,11 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
 +int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
 +		  unsigned int verbose);
 +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size);
-+ssize_t aufs_getxattr(struct dentry *dentry, struct inode *inode,
-+		      const char *name, void *value, size_t size);
-+int aufs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
-+		  const void *value, size_t size, int flags);
-+int aufs_removexattr(struct dentry *dentry, const char *name);
-+
-+/* void au_xattr_init(struct super_block *sb); */
++void au_xattr_init(struct super_block *sb);
 +#else
 +AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src,
 +	   int ignore_flags, unsigned int verbose);
-+/* AuStubVoid(au_xattr_init, struct super_block *sb); */
++AuStubVoid(au_xattr_init, struct super_block *sb);
 +#endif
 +
 +#ifdef CONFIG_FS_POSIX_ACL
@@ -16965,11 +16922,10 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
 +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
 +enum {
 +	AU_XATTR_SET,
-+	AU_XATTR_REMOVE,
 +	AU_ACL_SET
 +};
 +
-+struct au_srxattr {
++struct au_sxattr {
 +	int type;
 +	union {
 +		struct {
@@ -16979,16 +16935,13 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h
 +			int		flags;
 +		} set;
 +		struct {
-+			const char	*name;
-+		} remove;
-+		struct {
 +			struct posix_acl *acl;
 +			int		type;
 +		} acl_set;
 +	} u;
 +};
-+ssize_t au_srxattr(struct dentry *dentry, struct inode *inode,
-+		   struct au_srxattr *arg);
++ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
++		  struct au_sxattr *arg);
 +#endif
 +
 +/* ---------------------------------------------------------------------- */
@@ -17556,8 +17509,8 @@ diff -urN /usr/share/empty/fs/aufs/ioctl.c linux/fs/aufs/ioctl.c
 +#endif
 diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c
 --- /usr/share/empty/fs/aufs/i_op_add.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op_add.c	2016-10-09 16:55:36.492701639 +0200
-@@ -0,0 +1,924 @@
++++ linux/fs/aufs/i_op_add.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,928 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -18272,6 +18225,10 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c
 +		goto out_parent;
 +	}
 +
++	/*
++	 * aufs doesn't touch the credential so
++	 * security_dentry_create_files_as() is unnecrssary.
++	 */
 +	if (au_opt_test(au_mntflags(sb), PLINK)) {
 +		if (a->bdst < a->bsrc
 +		    /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */)
@@ -18484,8 +18441,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c
 +}
 diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 --- /usr/share/empty/fs/aufs/i_op.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op.c	2016-10-09 16:55:38.889431135 +0200
-@@ -0,0 +1,1451 @@
++++ linux/fs/aufs/i_op.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,1444 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -19376,6 +19333,10 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +	inode = d_inode(dentry);
 +	IMustLock(inode);
 +
++	err = setattr_prepare(dentry, ia);
++	if (unlikely(err))
++		goto out;
++
 +	err = -ENOMEM;
 +	a = kzalloc(sizeof(*a), GFP_NOFS);
 +	if (unlikely(!a))
@@ -19519,8 +19480,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +	return err;
 +}
 +
-+ssize_t au_srxattr(struct dentry *dentry, struct inode *inode,
-+		   struct au_srxattr *arg)
++ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
++		  struct au_sxattr *arg)
 +{
 +	int err;
 +	struct path h_path;
@@ -19554,13 +19515,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +				     arg->u.set.name, arg->u.set.value,
 +				     arg->u.set.size, arg->u.set.flags);
 +		break;
-+	case AU_XATTR_REMOVE:
-+		err = vfsub_removexattr(h_path.dentry, arg->u.remove.name);
-+		break;
 +	case AU_ACL_SET:
 +		err = -EOPNOTSUPP;
 +		h_inode = d_inode(h_path.dentry);
 +		if (h_inode->i_op->set_acl)
++			/* this will call posix_acl_update_mode */
 +			err = h_inode->i_op->set_acl(h_inode,
 +						     arg->u.acl_set.acl,
 +						     arg->u.acl_set.type);
@@ -19614,7 +19573,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +}
 +
 +/*
-+ * common routine for aufs_getattr() and aufs_getxattr().
++ * common routine for aufs_getattr() and au_getxattr().
 + * returns zero or negative (an error).
 + * @dentry will be read-locked in success.
 + */
@@ -19781,7 +19740,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +	err = 0;
 +	AuDbg("%pf\n", h_inode->i_op->get_link);
 +	AuDbgDentry(h_dentry);
-+	ret = h_inode->i_op->get_link(h_dentry, h_inode, done);
++	ret = vfs_get_link(h_dentry, done);
 +	dput(h_dentry);
 +	if (IS_ERR(ret))
 +		err = PTR_ERR(ret);
@@ -19875,10 +19834,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +		.getattr	= aufs_getattr,
 +
 +#ifdef CONFIG_AUFS_XATTR
-+		.setxattr	= aufs_setxattr,
-+		.getxattr	= aufs_getxattr,
 +		.listxattr	= aufs_listxattr,
-+		.removexattr	= aufs_removexattr,
 +#endif
 +
 +		.readlink	= generic_readlink,
@@ -19907,10 +19863,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +		.getattr	= aufs_getattr,
 +
 +#ifdef CONFIG_AUFS_XATTR
-+		.setxattr	= aufs_setxattr,
-+		.getxattr	= aufs_getxattr,
 +		.listxattr	= aufs_listxattr,
-+		.removexattr	= aufs_removexattr,
 +#endif
 +
 +		.update_time	= aufs_update_time,
@@ -19928,10 +19881,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c
 +		.getattr	= aufs_getattr,
 +
 +#ifdef CONFIG_AUFS_XATTR
-+		.setxattr	= aufs_setxattr,
-+		.getxattr	= aufs_getxattr,
 +		.listxattr	= aufs_listxattr,
-+		.removexattr	= aufs_removexattr,
 +#endif
 +
 +		.update_time	= aufs_update_time
@@ -20454,8 +20404,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c
 +}
 diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 --- /usr/share/empty/fs/aufs/i_op_ren.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/i_op_ren.c	2016-10-09 16:55:36.492701639 +0200
-@@ -0,0 +1,1015 @@
++++ linux/fs/aufs/i_op_ren.c	2016-12-17 12:28:17.595211562 +0100
+@@ -0,0 +1,1165 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -20483,13 +20433,15 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +enum { AuSRC, AuDST, AuSrcDst };
 +enum { AuPARENT, AuCHILD, AuParentChild };
 +
-+#define AuRen_ISDIR	1
-+#define AuRen_ISSAMEDIR	(1 << 1)
-+#define AuRen_WHSRC	(1 << 2)
-+#define AuRen_WHDST	(1 << 3)
-+#define AuRen_MNT_WRITE	(1 << 4)
-+#define AuRen_DT_DSTDIR	(1 << 5)
-+#define AuRen_DIROPQ	(1 << 6)
++#define AuRen_ISDIR_SRC		1
++#define AuRen_ISDIR_DST		(1 << 1)
++#define AuRen_ISSAMEDIR		(1 << 2)
++#define AuRen_WHSRC		(1 << 3)
++#define AuRen_WHDST		(1 << 4)
++#define AuRen_MNT_WRITE		(1 << 5)
++#define AuRen_DT_DSTDIR		(1 << 6)
++#define AuRen_DIROPQ_SRC	(1 << 7)
++#define AuRen_DIROPQ_DST	(1 << 8)
 +#define au_ftest_ren(flags, name)	((flags) & AuRen_##name)
 +#define au_fset_ren(flags, name) \
 +	do { (flags) |= AuRen_##name; } while (0)
@@ -20501,9 +20453,9 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		struct dentry *dentry, *h_dentry, *parent, *h_parent,
 +			*wh_dentry;
 +		struct inode *dir, *inode;
-+		struct au_hinode *hdir;
++		struct au_hinode *hdir, *hinode;
 +		struct au_dtime dt[AuParentChild];
-+		aufs_bindex_t btop;
++		aufs_bindex_t btop, bdiropq;
 +	} sd[AuSrcDst];
 +
 +#define src_dentry	sd[AuSRC].dentry
@@ -20514,9 +20466,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +#define src_h_parent	sd[AuSRC].h_parent
 +#define src_wh_dentry	sd[AuSRC].wh_dentry
 +#define src_hdir	sd[AuSRC].hdir
++#define src_hinode	sd[AuSRC].hinode
 +#define src_h_dir	sd[AuSRC].hdir->hi_inode
 +#define src_dt		sd[AuSRC].dt
 +#define src_btop	sd[AuSRC].btop
++#define src_bdiropq	sd[AuSRC].bdiropq
 +
 +#define dst_dentry	sd[AuDST].dentry
 +#define dst_dir		sd[AuDST].dir
@@ -20526,18 +20480,23 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +#define dst_h_parent	sd[AuDST].h_parent
 +#define dst_wh_dentry	sd[AuDST].wh_dentry
 +#define dst_hdir	sd[AuDST].hdir
++#define dst_hinode	sd[AuDST].hinode
 +#define dst_h_dir	sd[AuDST].hdir->hi_inode
 +#define dst_dt		sd[AuDST].dt
 +#define dst_btop	sd[AuDST].btop
++#define dst_bdiropq	sd[AuDST].bdiropq
 +
 +	struct dentry *h_trap;
 +	struct au_branch *br;
-+	struct au_hinode *src_hinode;
 +	struct path h_path;
 +	struct au_nhash whlist;
-+	aufs_bindex_t btgt, src_bwh, src_bdiropq;
++	aufs_bindex_t btgt, src_bwh;
 +
-+	unsigned int flags;
++	struct {
++		unsigned short auren_flags;
++		unsigned char flags;	/* syscall parameter */
++		unsigned char exchange;
++	} __packed;
 +
 +	struct au_whtmp_rmdir *thargs;
 +	struct dentry *h_dst;
@@ -20559,16 +20518,29 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	err = -EIO; \
 +} while (0)
 +
-+static void au_ren_rev_diropq(int err, struct au_ren_args *a)
++static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx)
 +{
 +	int rerr;
++	struct dentry *d;
++#define src_or_dst(member) a->sd[idx].member
 +
-+	au_hn_inode_lock_nested(a->src_hinode, AuLsc_I_CHILD);
-+	rerr = au_diropq_remove(a->src_dentry, a->btgt);
-+	au_hn_inode_unlock(a->src_hinode);
-+	au_set_dbdiropq(a->src_dentry, a->src_bdiropq);
++	d = src_or_dst(dentry); /* {src,dst}_dentry */
++	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
++	rerr = au_diropq_remove(d, a->btgt);
++	au_hn_inode_unlock(src_or_dst(hinode));
++	au_set_dbdiropq(d, src_or_dst(bdiropq));
 +	if (rerr)
-+		RevertFailure("remove diropq %pd", a->src_dentry);
++		RevertFailure("remove diropq %pd", d);
++
++#undef src_or_dst_
++}
++
++static void au_ren_rev_diropq(int err, struct au_ren_args *a)
++{
++	if (au_ftest_ren(a->auren_flags, DIROPQ_SRC))
++		au_ren_do_rev_diropq(err, a, AuSRC);
++	if (au_ftest_ren(a->auren_flags, DIROPQ_DST))
++		au_ren_do_rev_diropq(err, a, AuDST);
 +}
 +
 +static void au_ren_rev_rename(int err, struct au_ren_args *a)
@@ -20587,7 +20559,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	delegated = NULL;
 +	rerr = vfsub_rename(a->dst_h_dir,
 +			    au_h_dptr(a->src_dentry, a->btgt),
-+			    a->src_h_dir, &a->h_path, &delegated);
++			    a->src_h_dir, &a->h_path, &delegated, a->flags);
 +	if (unlikely(rerr == -EWOULDBLOCK)) {
 +		pr_warn("cannot retry for NFSv4 delegation"
 +			" for an internal rename\n");
@@ -20620,7 +20592,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	delegated = NULL;
 +	rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path,
-+			    &delegated);
++			    &delegated, a->flags);
 +	if (unlikely(rerr == -EWOULDBLOCK)) {
 +		pr_warn("cannot retry for NFSv4 delegation"
 +			" for an internal rename\n");
@@ -20662,13 +20634,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	d = a->src_dentry;
 +	if (au_dbtop(d) == a->btgt) {
 +		a->h_path.dentry = a->dst_h_dentry;
-+		if (au_ftest_ren(a->flags, DIROPQ)
-+		    && au_dbdiropq(d) == a->btgt)
-+			au_fclr_ren(a->flags, DIROPQ);
 +		AuDebugOn(au_dbtop(d) != a->btgt);
 +		delegated = NULL;
 +		err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt),
-+				   a->dst_h_dir, &a->h_path, &delegated);
++				   a->dst_h_dir, &a->h_path, &delegated,
++				   a->flags);
 +		if (unlikely(err == -EWOULDBLOCK)) {
 +			pr_warn("cannot retry for NFSv4 delegation"
 +				" for an internal rename\n");
@@ -20712,127 +20682,179 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +}
 +
 +/* make it 'opaque' dir. */
-+static int au_ren_diropq(struct au_ren_args *a)
++static int au_ren_do_diropq(struct au_ren_args *a, int idx)
 +{
 +	int err;
-+	struct dentry *diropq;
++	struct dentry *d, *diropq;
++#define src_or_dst(member) a->sd[idx].member
 +
 +	err = 0;
-+	a->src_bdiropq = au_dbdiropq(a->src_dentry);
-+	a->src_hinode = au_hi(a->src_inode, a->btgt);
-+	au_hn_inode_lock_nested(a->src_hinode, AuLsc_I_CHILD);
-+	diropq = au_diropq_create(a->src_dentry, a->btgt);
-+	au_hn_inode_unlock(a->src_hinode);
++	d = src_or_dst(dentry); /* {src,dst}_dentry */
++	src_or_dst(bdiropq) = au_dbdiropq(d);
++	src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt);
++	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
++	diropq = au_diropq_create(d, a->btgt);
++	au_hn_inode_unlock(src_or_dst(hinode));
 +	if (IS_ERR(diropq))
 +		err = PTR_ERR(diropq);
 +	else
 +		dput(diropq);
 +
++#undef src_or_dst_
 +	return err;
 +}
 +
-+static int do_rename(struct au_ren_args *a)
++static int au_ren_diropq(struct au_ren_args *a)
 +{
 +	int err;
-+	struct dentry *d, *h_d;
++	unsigned char always;
++	struct dentry *d;
 +
-+	/* prepare workqueue args for asynchronous rmdir */
-+	h_d = a->dst_h_dentry;
-+	if (au_ftest_ren(a->flags, ISDIR) && d_is_positive(h_d)) {
-+		err = -ENOMEM;
-+		a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb, GFP_NOFS);
-+		if (unlikely(!a->thargs))
++	err = 0;
++	d = a->dst_dentry; /* already renamed on the branch */
++	always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ);
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    && a->btgt != au_dbdiropq(a->src_dentry)
++	    && (a->dst_wh_dentry
++		|| a->btgt <= au_dbdiropq(d)
++		/* hide the lower to keep xino */
++		/* the lowers may not be a dir, but we hide them anyway */
++		|| a->btgt < au_dbbot(d)
++		|| always)) {
++		AuDbg("here\n");
++		err = au_ren_do_diropq(a, AuSRC);
++		if (unlikely(err))
 +			goto out;
-+		a->h_dst = dget(h_d);
-+	}
-+
-+	/* create whiteout for src_dentry */
-+	if (au_ftest_ren(a->flags, WHSRC)) {
-+		a->src_bwh = au_dbwh(a->src_dentry);
-+		AuDebugOn(a->src_bwh >= 0);
-+		a->src_wh_dentry
-+			= au_wh_create(a->src_dentry, a->btgt, a->src_h_parent);
-+		err = PTR_ERR(a->src_wh_dentry);
-+		if (IS_ERR(a->src_wh_dentry))
-+			goto out_thargs;
-+	}
-+
-+	/* lookup whiteout for dentry */
-+	if (au_ftest_ren(a->flags, WHDST)) {
-+		h_d = au_wh_lkup(a->dst_h_parent, &a->dst_dentry->d_name,
-+				 a->br);
-+		err = PTR_ERR(h_d);
-+		if (IS_ERR(h_d))
-+			goto out_whsrc;
-+		if (d_is_negative(h_d))
-+			dput(h_d);
-+		else
-+			a->dst_wh_dentry = h_d;
++		au_fset_ren(a->auren_flags, DIROPQ_SRC);
 +	}
++	if (!a->exchange)
++		goto out; /* success */
 +
-+	/* rename dentry to tmpwh */
-+	if (a->thargs) {
-+		err = au_whtmp_ren(a->dst_h_dentry, a->br);
++	d = a->src_dentry; /* already renamed on the branch */
++	if (au_ftest_ren(a->auren_flags, ISDIR_DST)
++	    && a->btgt != au_dbdiropq(a->dst_dentry)
++	    && (a->btgt < au_dbdiropq(d)
++		|| a->btgt < au_dbbot(d)
++		|| always)) {
++		AuDbgDentry(a->src_dentry);
++		AuDbgDentry(a->dst_dentry);
++		err = au_ren_do_diropq(a, AuDST);
 +		if (unlikely(err))
-+			goto out_whdst;
++			goto out_rev_src;
++		au_fset_ren(a->auren_flags, DIROPQ_DST);
++	}
++	goto out; /* success */
 +
-+		d = a->dst_dentry;
-+		au_set_h_dptr(d, a->btgt, NULL);
-+		err = au_lkup_neg(d, a->btgt, /*wh*/0);
-+		if (unlikely(err))
-+			goto out_whtmp;
-+		a->dst_h_dentry = au_h_dptr(d, a->btgt);
++out_rev_src:
++	AuDbg("err %d, reverting src\n", err);
++	au_ren_rev_diropq(err, a);
++out:
++	return err;
++}
++
++static int do_rename(struct au_ren_args *a)
++{
++	int err;
++	struct dentry *d, *h_d;
++
++	if (!a->exchange) {
++		/* prepare workqueue args for asynchronous rmdir */
++		h_d = a->dst_h_dentry;
++		if (au_ftest_ren(a->auren_flags, ISDIR_DST)
++		    && d_is_positive(h_d)) {
++			err = -ENOMEM;
++			a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb,
++							 GFP_NOFS);
++			if (unlikely(!a->thargs))
++				goto out;
++			a->h_dst = dget(h_d);
++		}
++
++		/* create whiteout for src_dentry */
++		if (au_ftest_ren(a->auren_flags, WHSRC)) {
++			a->src_bwh = au_dbwh(a->src_dentry);
++			AuDebugOn(a->src_bwh >= 0);
++			a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt,
++							a->src_h_parent);
++			err = PTR_ERR(a->src_wh_dentry);
++			if (IS_ERR(a->src_wh_dentry))
++				goto out_thargs;
++		}
++
++		/* lookup whiteout for dentry */
++		if (au_ftest_ren(a->auren_flags, WHDST)) {
++			h_d = au_wh_lkup(a->dst_h_parent,
++					 &a->dst_dentry->d_name, a->br);
++			err = PTR_ERR(h_d);
++			if (IS_ERR(h_d))
++				goto out_whsrc;
++			if (d_is_negative(h_d))
++				dput(h_d);
++			else
++				a->dst_wh_dentry = h_d;
++		}
++
++		/* rename dentry to tmpwh */
++		if (a->thargs) {
++			err = au_whtmp_ren(a->dst_h_dentry, a->br);
++			if (unlikely(err))
++				goto out_whdst;
++
++			d = a->dst_dentry;
++			au_set_h_dptr(d, a->btgt, NULL);
++			err = au_lkup_neg(d, a->btgt, /*wh*/0);
++			if (unlikely(err))
++				goto out_whtmp;
++			a->dst_h_dentry = au_h_dptr(d, a->btgt);
++		}
 +	}
 +
 +	BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt);
 +
 +	/* rename by vfs_rename or cpup */
-+	d = a->dst_dentry;
-+	if (au_ftest_ren(a->flags, ISDIR)
-+	    && (a->dst_wh_dentry
-+		|| au_dbdiropq(d) == a->btgt
-+		/* hide the lower to keep xino */
-+		|| a->btgt < au_dbbot(d)
-+		|| au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ)))
-+		au_fset_ren(a->flags, DIROPQ);
 +	err = au_ren_or_cpup(a);
 +	if (unlikely(err))
 +		/* leave the copied-up one */
 +		goto out_whtmp;
 +
 +	/* make dir opaque */
-+	if (au_ftest_ren(a->flags, DIROPQ)) {
-+		err = au_ren_diropq(a);
-+		if (unlikely(err))
-+			goto out_rename;
-+	}
++	err = au_ren_diropq(a);
++	if (unlikely(err))
++		goto out_rename;
 +
 +	/* update target timestamps */
++	if (a->exchange) {
++		AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt);
++		a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt);
++		vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
++		a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
++	}
 +	AuDebugOn(au_dbtop(a->src_dentry) != a->btgt);
 +	a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt);
 +	vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
 +	a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
 +
-+	/* remove whiteout for dentry */
-+	if (a->dst_wh_dentry) {
-+		a->h_path.dentry = a->dst_wh_dentry;
-+		err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path,
-+					  a->dst_dentry);
-+		if (unlikely(err))
-+			goto out_diropq;
-+	}
++	if (!a->exchange) {
++		/* remove whiteout for dentry */
++		if (a->dst_wh_dentry) {
++			a->h_path.dentry = a->dst_wh_dentry;
++			err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path,
++						  a->dst_dentry);
++			if (unlikely(err))
++				goto out_diropq;
++		}
 +
-+	/* remove whtmp */
-+	if (a->thargs)
-+		au_ren_del_whtmp(a); /* ignore this error */
++		/* remove whtmp */
++		if (a->thargs)
++			au_ren_del_whtmp(a); /* ignore this error */
 +
-+	au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0);
++		au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0);
++	}
 +	err = 0;
 +	goto out_success;
 +
 +out_diropq:
-+	if (au_ftest_ren(a->flags, DIROPQ))
-+		au_ren_rev_diropq(err, a);
++	au_ren_rev_diropq(err, a);
 +out_rename:
 +	au_ren_rev_rename(err, a);
 +	dput(a->h_dst);
@@ -20925,7 +20947,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	SiMustAnyLock(d->d_sb);
 +
 +	err = 0;
-+	if (au_ftest_ren(a->flags, ISDIR) && a->dst_inode) {
++	if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) {
 +		rdhash = au_sbi(d->d_sb)->si_rdhash;
 +		if (!rdhash)
 +			rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d));
@@ -20933,9 +20955,12 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		if (unlikely(err))
 +			goto out;
 +
-+		au_set_dbtop(d, a->dst_btop);
-+		err = may_rename_dstdir(d, &a->whlist);
-+		au_set_dbtop(d, a->btgt);
++		if (!a->exchange) {
++			au_set_dbtop(d, a->dst_btop);
++			err = may_rename_dstdir(d, &a->whlist);
++			au_set_dbtop(d, a->btgt);
++		} else
++			err = may_rename_srcdir(d, a->btgt);
 +	}
 +	a->dst_h_dentry = au_h_dptr(d, au_dbtop(d));
 +	if (unlikely(err))
@@ -20943,7 +20968,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	d = a->src_dentry;
 +	a->src_h_dentry = au_h_dptr(d, au_dbtop(d));
-+	if (au_ftest_ren(a->flags, ISDIR)) {
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
 +		err = may_rename_srcdir(d, a->btgt);
 +		if (unlikely(err)) {
 +			au_nhash_wh_free(&a->whlist);
@@ -20967,7 +20992,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	if (a->src_btop == a->btgt) {
 +		err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent,
-+				 au_ftest_ren(a->flags, ISDIR));
++				 au_ftest_ren(a->auren_flags, ISDIR_SRC));
 +		if (unlikely(err))
 +			goto out;
 +		err = -EINVAL;
@@ -20984,7 +21009,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		goto out;
 +
 +	err = -EIO;
-+	isdir = !!au_ftest_ren(a->flags, ISDIR);
++	isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST);
 +	if (d_really_is_negative(a->dst_dentry)) {
 +		if (d_is_negative(a->dst_h_dentry))
 +			err = au_may_add(a->dst_dentry, a->btgt,
@@ -21034,7 +21059,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +{
 +	vfsub_unlock_rename(a->src_h_parent, a->src_hdir,
 +			    a->dst_h_parent, a->dst_hdir);
-+	if (au_ftest_ren(a->flags, MNT_WRITE))
++	if (au_ftest_ren(a->auren_flags, MNT_WRITE))
 +		vfsub_mnt_drop_write(au_br_mnt(a->br));
 +}
 +
@@ -21052,7 +21077,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	err = vfsub_mnt_want_write(au_br_mnt(a->br));
 +	if (unlikely(err))
 +		goto out;
-+	au_fset_ren(a->flags, MNT_WRITE);
++	au_fset_ren(a->auren_flags, MNT_WRITE);
 +	a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir,
 +				      a->dst_h_parent, a->dst_hdir);
 +	udba = au_opt_udba(a->src_dentry->d_sb);
@@ -21085,20 +21110,30 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	dir = a->dst_dir;
 +	dir->i_version++;
-+	if (au_ftest_ren(a->flags, ISDIR)) {
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
 +		/* is this updating defined in POSIX? */
 +		au_cpup_attr_timesizes(a->src_inode);
 +		au_cpup_attr_nlink(dir, /*force*/1);
 +	}
-+
 +	au_dir_ts(dir, a->btgt);
 +
-+	if (au_ftest_ren(a->flags, ISSAMEDIR))
++	if (a->exchange) {
++		dir = a->src_dir;
++		dir->i_version++;
++		if (au_ftest_ren(a->auren_flags, ISDIR_DST)) {
++			/* is this updating defined in POSIX? */
++			au_cpup_attr_timesizes(a->dst_inode);
++			au_cpup_attr_nlink(dir, /*force*/1);
++		}
++		au_dir_ts(dir, a->btgt);
++	}
++
++	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
 +		return;
 +
 +	dir = a->src_dir;
 +	dir->i_version++;
-+	if (au_ftest_ren(a->flags, ISDIR))
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC))
 +		au_cpup_attr_nlink(dir, /*force*/1);
 +	au_dir_ts(dir, a->btgt);
 +}
@@ -21118,13 +21153,16 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	i = a->dst_inode;
 +	if (i) {
-+		if (!au_ftest_ren(a->flags, ISDIR))
-+			vfsub_drop_nlink(i);
-+		else {
-+			vfsub_dead_dir(i);
-+			au_cpup_attr_timesizes(i);
-+		}
-+		au_update_dbrange(d, /*do_put_zero*/1);
++		if (!a->exchange) {
++			if (!au_ftest_ren(a->auren_flags, ISDIR_DST))
++				vfsub_drop_nlink(i);
++			else {
++				vfsub_dead_dir(i);
++				au_cpup_attr_timesizes(i);
++			}
++			au_update_dbrange(d, /*do_put_zero*/1);
++		} else
++			au_cpup_attr_nlink(i, /*force*/1);
 +	} else {
 +		bbot = a->btgt;
 +		for (bindex = au_dbtop(d); bindex < bbot; bindex++)
@@ -21136,30 +21174,33 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	}
 +
 +	d = a->src_dentry;
-+	au_set_dbwh(d, -1);
-+	bbot = au_dbbot(d);
-+	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
-+		h_d = au_h_dptr(d, bindex);
-+		if (h_d)
-+			au_set_h_dptr(d, bindex, NULL);
-+	}
-+	au_set_dbbot(d, a->btgt);
++	if (!a->exchange) {
++		au_set_dbwh(d, -1);
++		bbot = au_dbbot(d);
++		for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
++			h_d = au_h_dptr(d, bindex);
++			if (h_d)
++				au_set_h_dptr(d, bindex, NULL);
++		}
++		au_set_dbbot(d, a->btgt);
 +
-+	sb = d->d_sb;
-+	i = a->src_inode;
-+	if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i))
-+		return; /* success */
++		sb = d->d_sb;
++		i = a->src_inode;
++		if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i))
++			return; /* success */
 +
-+	bbot = au_ibbot(i);
-+	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
-+		h_i = au_h_iptr(i, bindex);
-+		if (h_i) {
-+			au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0);
-+			/* ignore this error */
-+			au_set_h_iptr(i, bindex, NULL, 0);
++		bbot = au_ibbot(i);
++		for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
++			h_i = au_h_iptr(i, bindex);
++			if (h_i) {
++				au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0);
++				/* ignore this error */
++				au_set_h_iptr(i, bindex, NULL, 0);
++			}
 +		}
++		au_set_ibbot(i, a->btgt);
 +	}
-+	au_set_ibbot(i, a->btgt);
++		d_drop(a->src_dentry);
 +}
 +
 +/* ---------------------------------------------------------------------- */
@@ -21197,7 +21238,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	a->src_btop = au_dbtop(a->src_dentry);
 +	a->dst_btop = au_dbtop(a->dst_dentry);
-+	if (au_ftest_ren(a->flags, ISDIR))
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    || au_ftest_ren(a->auren_flags, ISDIR_DST))
 +		au_fset_wrdir(wr_dir_args.flags, ISDIR);
 +	wr_dir_args.force_btgt = a->src_btop;
 +	if (a->dst_inode && a->dst_btop < a->src_btop)
@@ -21205,6 +21247,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt);
 +	err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args);
 +	a->btgt = err;
++	if (a->exchange)
++		au_update_dbtop(a->dst_dentry);
 +
 +	return err;
 +}
@@ -21213,19 +21257,20 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +{
 +	a->h_path.dentry = a->src_h_parent;
 +	au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path);
-+	if (!au_ftest_ren(a->flags, ISSAMEDIR)) {
++	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) {
 +		a->h_path.dentry = a->dst_h_parent;
 +		au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path);
 +	}
 +
-+	au_fclr_ren(a->flags, DT_DSTDIR);
-+	if (!au_ftest_ren(a->flags, ISDIR))
++	au_fclr_ren(a->auren_flags, DT_DSTDIR);
++	if (!au_ftest_ren(a->auren_flags, ISDIR_SRC)
++	    && !a->exchange)
 +		return;
 +
 +	a->h_path.dentry = a->src_h_dentry;
 +	au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path);
 +	if (d_is_positive(a->dst_h_dentry)) {
-+		au_fset_ren(a->flags, DT_DSTDIR);
++		au_fset_ren(a->auren_flags, DT_DSTDIR);
 +		a->h_path.dentry = a->dst_h_dentry;
 +		au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path);
 +	}
@@ -21237,17 +21282,17 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	struct inode *h_inode;
 +
 +	au_dtime_revert(a->src_dt + AuPARENT);
-+	if (!au_ftest_ren(a->flags, ISSAMEDIR))
++	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR))
 +		au_dtime_revert(a->dst_dt + AuPARENT);
 +
-+	if (au_ftest_ren(a->flags, ISDIR) && err != -EIO) {
++	if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) {
 +		h_d = a->src_dt[AuCHILD].dt_h_path.dentry;
 +		h_inode = d_inode(h_d);
 +		inode_lock_nested(h_inode, AuLsc_I_CHILD);
 +		au_dtime_revert(a->src_dt + AuCHILD);
 +		inode_unlock(h_inode);
 +
-+		if (au_ftest_ren(a->flags, DT_DSTDIR)) {
++		if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) {
 +			h_d = a->dst_dt[AuCHILD].dt_h_path.dentry;
 +			h_inode = d_inode(h_d);
 +			inode_lock_nested(h_inode, AuLsc_I_CHILD);
@@ -21260,22 +21305,30 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +/* ---------------------------------------------------------------------- */
 +
 +int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry,
-+		struct inode *_dst_dir, struct dentry *_dst_dentry)
++		struct inode *_dst_dir, struct dentry *_dst_dentry,
++		unsigned int _flags)
 +{
-+	int err, flags;
++	int err, lock_flags;
 +	/* reduce stack space */
 +	struct au_ren_args *a;
++	struct au_pin pin;
 +
-+	AuDbg("%pd, %pd\n", _src_dentry, _dst_dentry);
++	AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags);
 +	IMustLock(_src_dir);
 +	IMustLock(_dst_dir);
 +
++	err = -EINVAL;
++	if (unlikely(_flags & RENAME_WHITEOUT))
++		goto out;
++
 +	err = -ENOMEM;
 +	BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE);
 +	a = kzalloc(sizeof(*a), GFP_NOFS);
 +	if (unlikely(!a))
 +		goto out;
 +
++	a->flags = _flags;
++	a->exchange = _flags & RENAME_EXCHANGE;
 +	a->src_dir = _src_dir;
 +	a->src_dentry = _src_dentry;
 +	a->src_inode = NULL;
@@ -21289,20 +21342,33 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		a->dst_inode = d_inode(a->dst_dentry);
 +	a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */
 +	if (a->dst_inode) {
-+		IMustLock(a->dst_inode);
++		/*
++		 * if EXCHANGE && src is non-dir && dst is dir,
++		 * dst is not locked.
++		 */
++		/* IMustLock(a->dst_inode); */
 +		au_igrab(a->dst_inode);
 +	}
 +
 +	err = -ENOTDIR;
-+	flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN;
++	lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN;
 +	if (d_is_dir(a->src_dentry)) {
-+		au_fset_ren(a->flags, ISDIR);
-+		if (unlikely(d_really_is_positive(a->dst_dentry)
++		au_fset_ren(a->auren_flags, ISDIR_SRC);
++		if (unlikely(!a->exchange
++			     && d_really_is_positive(a->dst_dentry)
 +			     && !d_is_dir(a->dst_dentry)))
 +			goto out_free;
-+		flags |= AuLock_DIRS;
++		lock_flags |= AuLock_DIRS;
++	}
++	if (a->dst_inode && d_is_dir(a->dst_dentry)) {
++		au_fset_ren(a->auren_flags, ISDIR_DST);
++		if (unlikely(!a->exchange
++			     && d_really_is_positive(a->src_dentry)
++			     && !d_is_dir(a->src_dentry)))
++			goto out_free;
++		lock_flags |= AuLock_DIRS;
 +	}
-+	err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry, flags);
++	err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry, lock_flags);
 +	if (unlikely(err))
 +		goto out_free;
 +
@@ -21312,14 +21378,14 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	err = -ENOENT;
 +	if (a->dst_inode) {
 +		/*
-+		 * If it is a dir, VFS unhash dst_dentry before this
++		 * If it is a dir, VFS unhash it before this
 +		 * function. It means we cannot rely upon d_unhashed().
 +		 */
 +		if (unlikely(!a->dst_inode->i_nlink))
 +			goto out_unlock;
-+		if (!S_ISDIR(a->dst_inode->i_mode)) {
++		if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) {
 +			err = au_d_hashed_positive(a->dst_dentry);
-+			if (unlikely(err))
++			if (unlikely(err && !a->exchange))
 +				goto out_unlock;
 +		} else if (unlikely(IS_DEADDIR(a->dst_inode)))
 +			goto out_unlock;
@@ -21335,7 +21401,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +	if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry)))
 +		goto out_unlock;
 +
-+	au_fset_ren(a->flags, ISSAMEDIR); /* temporary */
++	au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */
 +	di_write_lock_parent(a->dst_parent);
 +
 +	/* which branch we process */
@@ -21352,39 +21418,43 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +
 +	/* prepare the writable parent dir on the same branch */
 +	if (a->dst_btop == a->btgt) {
-+		au_fset_ren(a->flags, WHDST);
++		au_fset_ren(a->auren_flags, WHDST);
 +	} else {
 +		err = au_cpup_dirs(a->dst_dentry, a->btgt);
 +		if (unlikely(err))
 +			goto out_children;
 +	}
 +
-+	if (a->src_dir != a->dst_dir) {
-+		/*
-+		 * this temporary unlock is safe,
-+		 * because both dir->i_mutex are locked.
-+		 */
-+		di_write_unlock(a->dst_parent);
-+		di_write_lock_parent(a->src_parent);
-+		err = au_wr_dir_need_wh(a->src_dentry,
-+					au_ftest_ren(a->flags, ISDIR),
-+					&a->btgt);
-+		di_write_unlock(a->src_parent);
-+		di_write_lock2_parent(a->src_parent, a->dst_parent, /*isdir*/1);
-+		au_fclr_ren(a->flags, ISSAMEDIR);
-+	} else
-+		err = au_wr_dir_need_wh(a->src_dentry,
-+					au_ftest_ren(a->flags, ISDIR),
-+					&a->btgt);
++	err = 0;
++	if (!a->exchange) {
++		if (a->src_dir != a->dst_dir) {
++			/*
++			 * this temporary unlock is safe,
++			 * because both dir->i_mutex are locked.
++			 */
++			di_write_unlock(a->dst_parent);
++			di_write_lock_parent(a->src_parent);
++			err = au_wr_dir_need_wh(a->src_dentry,
++						au_ftest_ren(a->auren_flags,
++							     ISDIR_SRC),
++						&a->btgt);
++			di_write_unlock(a->src_parent);
++			di_write_lock2_parent(a->src_parent, a->dst_parent,
++					      /*isdir*/1);
++			au_fclr_ren(a->auren_flags, ISSAMEDIR);
++		} else
++			err = au_wr_dir_need_wh(a->src_dentry,
++						au_ftest_ren(a->auren_flags,
++							     ISDIR_SRC),
++						&a->btgt);
++	}
 +	if (unlikely(err < 0))
 +		goto out_children;
 +	if (err)
-+		au_fset_ren(a->flags, WHSRC);
++		au_fset_ren(a->auren_flags, WHSRC);
 +
 +	/* cpup src */
 +	if (a->src_btop != a->btgt) {
-+		struct au_pin pin;
-+
 +		err = au_pin(&pin, a->src_dentry, a->btgt,
 +			     au_opt_udba(a->src_dentry->d_sb),
 +			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
@@ -21405,7 +21475,32 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +			goto out_children;
 +		a->src_btop = a->btgt;
 +		a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt);
-+		au_fset_ren(a->flags, WHSRC);
++		if (!a->exchange)
++			au_fset_ren(a->auren_flags, WHSRC);
++	}
++
++	/* cpup dst */
++	if (a->exchange && a->dst_inode
++	    && a->dst_btop != a->btgt) {
++		err = au_pin(&pin, a->dst_dentry, a->btgt,
++			     au_opt_udba(a->dst_dentry->d_sb),
++			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
++		if (!err) {
++			struct au_cp_generic cpg = {
++				.dentry	= a->dst_dentry,
++				.bdst	= a->btgt,
++				.bsrc	= a->dst_btop,
++				.len	= -1,
++				.pin	= &pin,
++				.flags	= AuCpup_DTIME | AuCpup_HOPEN
++			};
++			err = au_sio_cpup_simple(&cpg);
++			au_unpin(&pin);
++		}
++		if (unlikely(err))
++			goto out_children;
++		a->dst_btop = a->btgt;
++		a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt);
 +	}
 +
 +	/* lock them all */
@@ -21414,12 +21509,14 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		/* leave the copied-up one */
 +		goto out_children;
 +
-+	if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE))
-+		err = au_may_ren(a);
-+	else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN))
-+		err = -ENAMETOOLONG;
-+	if (unlikely(err))
-+		goto out_hdir;
++	if (!a->exchange) {
++		if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE))
++			err = au_may_ren(a);
++		else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN))
++			err = -ENAMETOOLONG;
++		if (unlikely(err))
++			goto out_hdir;
++	}
 +
 +	/* store timestamps to be revertible */
 +	au_ren_dt(a);
@@ -21449,14 +21546,17 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c
 +		au_set_dbtop(a->dst_dentry, a->dst_btop);
 +	}
 +out_parent:
-+	if (!err)
-+		d_move(a->src_dentry, a->dst_dentry);
-+	else {
++	if (!err) {
++		if (!a->exchange)
++			d_move(a->src_dentry, a->dst_dentry);
++		else
++			d_exchange(a->src_dentry, a->dst_dentry);
++	} else {
 +		au_update_dbtop(a->dst_dentry);
 +		if (!a->dst_inode)
 +			d_drop(a->dst_dentry);
 +	}
-+	if (au_ftest_ren(a->flags, ISSAMEDIR))
++	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
 +		di_write_unlock(a->dst_parent);
 +	else
 +		di_write_unlock2(a->src_parent, a->dst_parent);
@@ -23156,8 +23256,8 @@ diff -urN /usr/share/empty/fs/aufs/mvdown.c linux/fs/aufs/mvdown.c
 +}
 diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 --- /usr/share/empty/fs/aufs/opts.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/opts.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,1860 @@
++++ linux/fs/aufs/opts.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,1870 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -23584,6 +23684,10 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +	{AuWbrCreate_MFSV, "mfs:%d"},
 +	{AuWbrCreate_MFSV, "most-free-space:%d"},
 +
++	/* top-down regardless the parent, and then mfs */
++	{AuWbrCreate_TDMFS, "tdmfs:%d"},
++	{AuWbrCreate_TDMFSV, "tdmfs:%d:%d"},
++
 +	{AuWbrCreate_MFSRR, "mfsrr:%d"},
 +	{AuWbrCreate_MFSRRV, "mfsrr:%d:%d"},
 +	{AuWbrCreate_PMFS, "pmfs"},
@@ -23659,6 +23763,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +	create->wbr_create = err;
 +	switch (err) {
 +	case AuWbrCreate_MFSRRV:
++	case AuWbrCreate_TDMFSV:
 +	case AuWbrCreate_PMFSRRV:
 +		e = au_wbr_mfs_wmark(&args[0], str, create);
 +		if (!e)
@@ -23667,6 +23772,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +			err = e;
 +		break;
 +	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
 +	case AuWbrCreate_PMFSRR:
 +		e = au_wbr_mfs_wmark(&args[0], str, create);
 +		if (unlikely(e)) {
@@ -23877,10 +23983,12 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +				AuDbg("%d sec\n", u.create->mfs_second);
 +				break;
 +			case AuWbrCreate_MFSRR:
++			case AuWbrCreate_TDMFS:
 +				AuDbg("%llu watermark\n",
 +					  u.create->mfsrr_watermark);
 +				break;
 +			case AuWbrCreate_MFSRRV:
++			case AuWbrCreate_TDMFSV:
 +			case AuWbrCreate_PMFSRRV:
 +				AuDbg("%llu watermark, %d sec\n",
 +					  u.create->mfsrr_watermark,
@@ -24446,6 +24554,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +	switch (create->wbr_create) {
 +	case AuWbrCreate_MFSRRV:
 +	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
++	case AuWbrCreate_TDMFSV:
 +	case AuWbrCreate_PMFSRR:
 +	case AuWbrCreate_PMFSRRV:
 +		sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark;
@@ -25020,8 +25130,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c
 +}
 diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h
 --- /usr/share/empty/fs/aufs/opts.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/opts.h	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,211 @@
++++ linux/fs/aufs/opts.h	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,213 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -25123,6 +25233,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h
 +	AuWbrCreate_MFSV,	/* mfs with seconds */
 +	AuWbrCreate_MFSRR,	/* mfs then rr */
 +	AuWbrCreate_MFSRRV,	/* mfs then rr with seconds */
++	AuWbrCreate_TDMFS,	/* top down regardless parent and mfs */
++	AuWbrCreate_TDMFSV,	/* top down regardless parent and mfs */
 +	AuWbrCreate_PMFS,	/* parent and mfs */
 +	AuWbrCreate_PMFSV,	/* parent and mfs with seconds */
 +	AuWbrCreate_PMFSRR,	/* parent, mfs and round-robin */
@@ -25809,7 +25921,7 @@ diff -urN /usr/share/empty/fs/aufs/poll.c linux/fs/aufs/poll.c
 +}
 diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c
 --- /usr/share/empty/fs/aufs/posix_acl.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/posix_acl.c	2016-10-09 16:55:36.496035060 +0200
++++ linux/fs/aufs/posix_acl.c	2016-12-17 12:28:17.598545045 +0100
 @@ -0,0 +1,98 @@
 +/*
 + * Copyright (C) 2014-2016 Junjiro R. Okajima
@@ -25876,7 +25988,7 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c
 +	int err;
 +	ssize_t ssz;
 +	struct dentry *dentry;
-+	struct au_srxattr arg = {
++	struct au_sxattr arg = {
 +		.type = AU_ACL_SET,
 +		.u.acl_set = {
 +			.acl	= acl,
@@ -25900,7 +26012,7 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c
 +		}
 +	}
 +
-+	ssz = au_srxattr(dentry, inode, &arg);
++	ssz = au_sxattr(dentry, inode, &arg);
 +	dput(dentry);
 +	err = ssz;
 +	if (ssz >= 0)
@@ -27147,8 +27259,8 @@ diff -urN /usr/share/empty/fs/aufs/spl.h linux/fs/aufs/spl.h
 +#endif /* __AUFS_SPL_H__ */
 diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
 --- /usr/share/empty/fs/aufs/super.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/super.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,1038 @@
++++ linux/fs/aufs/super.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,1046 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -27269,15 +27381,31 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
 +	return err;
 +}
 +
++static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat,
++		       const char *append)
++{
++	char *p;
++
++	p = fmt;
++	while (*pat != ':')
++		*p++ = *pat++;
++	*p++ = *pat++;
++	strcpy(p, append);
++	AuDebugOn(strlen(fmt) >= len);
++}
++
 +static void au_show_wbr_create(struct seq_file *m, int v,
 +			       struct au_sbinfo *sbinfo)
 +{
 +	const char *pat;
++	char fmt[32];
++	struct au_wbr_mfs *mfs;
 +
 +	AuRwMustAnyLock(&sbinfo->si_rwsem);
 +
 +	seq_puts(m, ",create=");
 +	pat = au_optstr_wbr_create(v);
++	mfs = &sbinfo->si_wbr_mfs;
 +	switch (v) {
 +	case AuWbrCreate_TDP:
 +	case AuWbrCreate_RR:
@@ -27285,36 +27413,28 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
 +	case AuWbrCreate_PMFS:
 +		seq_puts(m, pat);
 +		break;
-+	case AuWbrCreate_MFSV:
-+		seq_printf(m, /*pat*/"mfs:%lu",
-+			   jiffies_to_msecs(sbinfo->si_wbr_mfs.mfs_expire)
-+			   / MSEC_PER_SEC);
++	case AuWbrCreate_MFSRR:
++	case AuWbrCreate_TDMFS:
++	case AuWbrCreate_PMFSRR:
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu");
++		seq_printf(m, fmt, mfs->mfsrr_watermark);
 +		break;
++	case AuWbrCreate_MFSV:
 +	case AuWbrCreate_PMFSV:
-+		seq_printf(m, /*pat*/"pmfs:%lu",
-+			   jiffies_to_msecs(sbinfo->si_wbr_mfs.mfs_expire)
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%lu");
++		seq_printf(m, fmt,
++			   jiffies_to_msecs(mfs->mfs_expire)
 +			   / MSEC_PER_SEC);
 +		break;
-+	case AuWbrCreate_MFSRR:
-+		seq_printf(m, /*pat*/"mfsrr:%llu",
-+			   sbinfo->si_wbr_mfs.mfsrr_watermark);
-+		break;
 +	case AuWbrCreate_MFSRRV:
-+		seq_printf(m, /*pat*/"mfsrr:%llu:%lu",
-+			   sbinfo->si_wbr_mfs.mfsrr_watermark,
-+			   jiffies_to_msecs(sbinfo->si_wbr_mfs.mfs_expire)
-+			   / MSEC_PER_SEC);
-+		break;
-+	case AuWbrCreate_PMFSRR:
-+		seq_printf(m, /*pat*/"pmfsrr:%llu",
-+			   sbinfo->si_wbr_mfs.mfsrr_watermark);
-+		break;
++	case AuWbrCreate_TDMFSV:
 +	case AuWbrCreate_PMFSRRV:
-+		seq_printf(m, /*pat*/"pmfsrr:%llu:%lu",
-+			   sbinfo->si_wbr_mfs.mfsrr_watermark,
-+			   jiffies_to_msecs(sbinfo->si_wbr_mfs.mfs_expire)
-+			   / MSEC_PER_SEC);
++		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu");
++		seq_printf(m, fmt, mfs->mfsrr_watermark,
++			   jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC);
 +		break;
++	default:
++		BUG();
 +	}
 +}
 +
@@ -28074,7 +28194,7 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
 +	sb->s_maxbytes = 0;
 +	sb->s_stack_depth = 1;
 +	au_export_init(sb);
-+	/* au_xattr_init(sb); */
++	au_xattr_init(sb);
 +
 +	err = alloc_root(sb);
 +	if (unlikely(err)) {
@@ -28189,8 +28309,8 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c
 +};
 diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h
 --- /usr/share/empty/fs/aufs/super.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/super.h	2016-10-09 16:55:38.889431135 +0200
-@@ -0,0 +1,638 @@
++++ linux/fs/aufs/super.h	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,639 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -28448,6 +28568,7 @@ diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h
 +#define AuLock_IW		(1 << 2)	/* write-lock inode */
 +#define AuLock_FLUSH		(1 << 3)	/* wait for 'nowait' tasks */
 +#define AuLock_DIRS		(1 << 4)	/* target is a pair of dirs */
++						/* except RENAME_EXCHANGE */
 +#define AuLock_NOPLM		(1 << 5)	/* return err in plm mode */
 +#define AuLock_NOPLMW		(1 << 6)	/* wait for plm mode ends */
 +#define AuLock_GEN		(1 << 7)	/* test digen/iigen */
@@ -30489,8 +30610,8 @@ diff -urN /usr/share/empty/fs/aufs/vdir.c linux/fs/aufs/vdir.c
 +}
 diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
 --- /usr/share/empty/fs/aufs/vfsub.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/vfsub.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,884 @@
++++ linux/fs/aufs/vfsub.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,886 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -30516,7 +30637,9 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
 +#include <linux/nsproxy.h>
 +#include <linux/security.h>
 +#include <linux/splice.h>
++#ifdef CONFIG_AUFS_BR_FUSE
 +#include "../fs/mount.h"
++#endif
 +#include "aufs.h"
 +
 +#ifdef CONFIG_AUFS_BR_FUSE
@@ -30876,7 +30999,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
 +
 +int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry,
 +		 struct inode *dir, struct path *path,
-+		 struct inode **delegated_inode)
++		 struct inode **delegated_inode, unsigned int flags)
 +{
 +	int err;
 +	struct path tmp = {
@@ -30897,7 +31020,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
 +
 +	lockdep_off();
 +	err = vfs_rename(src_dir, src_dentry, dir, path->dentry,
-+			 delegated_inode, /*flags*/0);
++			 delegated_inode, flags);
 +	lockdep_on();
 +	if (!err) {
 +		int did;
@@ -31377,7 +31500,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c
 +}
 diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h
 --- /usr/share/empty/fs/aufs/vfsub.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/vfsub.h	2016-10-09 16:55:36.496035060 +0200
++++ linux/fs/aufs/vfsub.h	2016-12-17 12:28:17.598545045 +0100
 @@ -0,0 +1,316 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
@@ -31544,7 +31667,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h
 +	       struct path *path, struct inode **delegated_inode);
 +int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry,
 +		 struct inode *hdir, struct path *path,
-+		 struct inode **delegated_inode);
++		 struct inode **delegated_inode, unsigned int flags);
 +int vfsub_mkdir(struct inode *dir, struct path *path, int mode);
 +int vfsub_rmdir(struct inode *dir, struct path *path);
 +
@@ -31697,8 +31820,8 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h
 +#endif /* __AUFS_VFSUB_H__ */
 diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c
 --- /usr/share/empty/fs/aufs/wbr_policy.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/wbr_policy.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,765 @@
++++ linux/fs/aufs/wbr_policy.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,830 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -32218,6 +32341,61 @@ diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c
 +
 +/* ---------------------------------------------------------------------- */
 +
++/* top down regardless parent, and then mfs */
++static int au_wbr_create_tdmfs(struct dentry *dentry,
++			       unsigned int flags __maybe_unused)
++{
++	int err;
++	aufs_bindex_t bwh, btail, bindex, bfound, bmfs;
++	unsigned long long watermark;
++	struct super_block *sb;
++	struct au_wbr_mfs *mfs;
++	struct au_branch *br;
++	struct dentry *parent;
++
++	sb = dentry->d_sb;
++	mfs = &au_sbi(sb)->si_wbr_mfs;
++	mutex_lock(&mfs->mfs_lock);
++	if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
++	    || mfs->mfs_bindex < 0)
++		au_mfs(dentry, /*parent*/NULL);
++	watermark = mfs->mfsrr_watermark;
++	bmfs = mfs->mfs_bindex;
++	mutex_unlock(&mfs->mfs_lock);
++
++	/* another style of au_wbr_create_exp() */
++	bwh = au_dbwh(dentry);
++	parent = dget_parent(dentry);
++	btail = au_dbtaildir(parent);
++	if (bwh >= 0 && bwh < btail)
++		btail = bwh;
++
++	err = au_wbr_nonopq(dentry, btail);
++	if (unlikely(err < 0))
++		goto out;
++	btail = err;
++	bfound = -1;
++	for (bindex = 0; bindex <= btail; bindex++) {
++		br = au_sbr(sb, bindex);
++		if (au_br_rdonly(br))
++			continue;
++		if (br->br_wbr->wbr_bytes > watermark) {
++			bfound = bindex;
++			break;
++		}
++	}
++	err = bfound;
++	if (err < 0)
++		err = bmfs;
++
++out:
++	dput(parent);
++	AuDbg("b%d\n", err);
++	return err;
++}
++
++/* ---------------------------------------------------------------------- */
++
 +/* most free space and then round robin */
 +static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags)
 +{
@@ -32443,6 +32621,16 @@ diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c
 +		.init	= au_wbr_create_init_mfsrr,
 +		.fin	= au_wbr_create_fin_mfs
 +	},
++	[AuWbrCreate_TDMFS] = {
++		.create	= au_wbr_create_tdmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
++	[AuWbrCreate_TDMFSV] = {
++		.create	= au_wbr_create_tdmfs,
++		.init	= au_wbr_create_init_mfs,
++		.fin	= au_wbr_create_fin_mfs
++	},
 +	[AuWbrCreate_PMFS] = {
 +		.create	= au_wbr_create_pmfs,
 +		.init	= au_wbr_create_init_mfs,
@@ -32466,8 +32654,8 @@ diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c
 +};
 diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c
 --- /usr/share/empty/fs/aufs/whout.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/whout.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,1060 @@
++++ linux/fs/aufs/whout.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,1061 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
 + *
@@ -32661,7 +32849,8 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c
 +
 +	/* under the same dir, no need to lock_rename() */
 +	delegated = NULL;
-+	err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated);
++	err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated,
++			   /*flags*/0);
 +	AuTraceErr(err);
 +	if (unlikely(err == -EWOULDBLOCK)) {
 +		pr_warn("cannot retry for NFSv4 delegation"
@@ -33933,8 +34122,8 @@ diff -urN /usr/share/empty/fs/aufs/wkq.h linux/fs/aufs/wkq.h
 +#endif /* __AUFS_WKQ_H__ */
 diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c
 --- /usr/share/empty/fs/aufs/xattr.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux/fs/aufs/xattr.c	2016-10-09 16:55:36.496035060 +0200
-@@ -0,0 +1,347 @@
++++ linux/fs/aufs/xattr.c	2016-12-17 12:28:17.598545045 +0100
+@@ -0,0 +1,332 @@
 +/*
 + * Copyright (C) 2014-2016 Junjiro R. Okajima
 + *
@@ -34201,8 +34390,9 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c
 +	return au_lgxattr(dentry, &arg);
 +}
 +
-+ssize_t aufs_getxattr(struct dentry *dentry, struct inode *inode __maybe_unused,
-+		      const char *name, void *value, size_t size)
++static ssize_t au_getxattr(struct dentry *dentry,
++			   struct inode *inode __maybe_unused,
++			   const char *name, void *value, size_t size)
 +{
 +	struct au_lgxattr arg = {
 +		.type = AU_XATTR_GET,
@@ -34216,10 +34406,11 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c
 +	return au_lgxattr(dentry, &arg);
 +}
 +
-+int aufs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
-+		  const void *value, size_t size, int flags)
++static int au_setxattr(struct dentry *dentry, struct inode *inode,
++		       const char *name, const void *value, size_t size,
++		       int flags)
 +{
-+	struct au_srxattr arg = {
++	struct au_sxattr arg = {
 +		.type = AU_XATTR_SET,
 +		.u.set = {
 +			.name	= name,
@@ -34229,59 +34420,42 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c
 +		},
 +	};
 +
-+	return au_srxattr(dentry, inode, &arg);
-+}
-+
-+int aufs_removexattr(struct dentry *dentry, const char *name)
-+{
-+	struct au_srxattr arg = {
-+		.type = AU_XATTR_REMOVE,
-+		.u.remove = {
-+			.name	= name
-+		},
-+	};
-+
-+	return au_srxattr(dentry, d_inode(dentry), &arg);
++	return au_sxattr(dentry, inode, &arg);
 +}
 +
 +/* ---------------------------------------------------------------------- */
 +
-+#if 0
-+static size_t au_xattr_list(struct dentry *dentry, char *list, size_t list_size,
-+			    const char *name, size_t name_len, int type)
-+{
-+	return aufs_listxattr(dentry, list, list_size);
-+}
-+
-+static int au_xattr_get(struct dentry *dentry, const char *name, void *buffer,
-+			size_t size, int type)
++static int au_xattr_get(const struct xattr_handler *handler,
++			struct dentry *dentry, struct inode *inode,
++			const char *name, void *buffer, size_t size)
 +{
-+	return aufs_getxattr(dentry, name, buffer, size);
++	return au_getxattr(dentry, inode, name, buffer, size);
 +}
 +
-+static int au_xattr_set(struct dentry *dentry, const char *name,
-+			const void *value, size_t size, int flags, int type)
++static int au_xattr_set(const struct xattr_handler *handler,
++			struct dentry *dentry, struct inode *inode,
++			const char *name, const void *value, size_t size,
++			int flags)
 +{
-+	return aufs_setxattr(dentry, name, value, size, flags);
++	return au_setxattr(dentry, inode, name, value, size, flags);
 +}
 +
 +static const struct xattr_handler au_xattr_handler = {
-+	/* no prefix, no flags */
-+	.list	= au_xattr_list,
++	.name	= "",
++	.prefix	= "",
 +	.get	= au_xattr_get,
 +	.set	= au_xattr_set
-+	/* why no remove? */
 +};
 +
 +static const struct xattr_handler *au_xattr_handlers[] = {
-+	&au_xattr_handler
++	&au_xattr_handler,
++	NULL
 +};
 +
 +void au_xattr_init(struct super_block *sb)
 +{
-+	/* sb->s_xattr = au_xattr_handlers; */
++	sb->s_xattr = au_xattr_handlers;
 +}
-+#endif
 diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c
 --- /usr/share/empty/fs/aufs/xino.c	1970-01-01 01:00:00.000000000 +0100
 +++ linux/fs/aufs/xino.c	2016-10-09 16:55:36.496035060 +0200
@@ -35606,7 +35780,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c
 +}
 diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/linux/aufs_type.h
 --- /usr/share/empty/include/uapi/linux/aufs_type.h	1970-01-01 01:00:00.000000000 +0100
-+++ linux/include/uapi/linux/aufs_type.h	2016-12-11 21:22:05.903059512 +0100
++++ linux/include/uapi/linux/aufs_type.h	2016-12-17 12:28:38.769494865 +0100
 @@ -0,0 +1,419 @@
 +/*
 + * Copyright (C) 2005-2016 Junjiro R. Okajima
@@ -35649,7 +35823,7 @@ diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/lin
 +
 +#include <linux/limits.h>
 +
-+#define AUFS_VERSION	"4.x-rcN-20161010"
++#define AUFS_VERSION	"4.9-20161219"
 +
 +/* todo? move this to linux-2.6.19/include/magic.h */
 +#define AUFS_SUPER_MAGIC	('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
@@ -36027,10 +36201,10 @@ diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/lin
 +#define AUFS_CTL_FHSM_FD	_IOW(AuCtlType, AuCtl_FHSM_FD, int)
 +
 +#endif /* __AUFS_TYPE_H__ */
-aufs4.x-rcN loopback patch
+aufs4.9 loopback patch
 
 diff --git a/drivers/block/loop.c b/drivers/block/loop.c
-index 005e292..e9e517d 100644
+index 6ee9235..f64161f 100644
 --- a/drivers/block/loop.c
 +++ b/drivers/block/loop.c
 @@ -551,7 +551,7 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq)
@@ -36170,7 +36344,7 @@ index 005e292..e9e517d 100644
   out:
  	/* This is safe: open() is still holding a reference. */
  	module_put(THIS_MODULE);
-@@ -1021,6 +1054,7 @@ loop_init_xfer(struct loop_device *lo, struct loop_func_table *xfer,
+@@ -1021,6 +1054,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
  static int loop_clr_fd(struct loop_device *lo)
  {
  	struct file *filp = lo->lo_backing_file;
@@ -36209,10 +36383,10 @@ index fb2237c..c3888c5 100644
  	unsigned	lo_blocksize;
  	void		*key_data; 
 diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c
-index 00475fb..01390e1 100644
+index d2a9a1d..d7519d0 100644
 --- a/fs/aufs/f_op.c
 +++ b/fs/aufs/f_op.c
-@@ -348,7 +348,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
+@@ -351,7 +351,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
  	if (IS_ERR(h_file))
  		goto out;
  
@@ -36249,7 +36423,7 @@ diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h
 index 48bf070..66afec7 100644
 --- a/fs/aufs/loop.h
 +++ b/fs/aufs/loop.h
-@@ -25,7 +25,11 @@ void au_warn_loopback(struct super_block *h_sb);
+@@ -25,7 +25,11 @@
  
  int au_loopback_init(void);
  void au_loopback_fin(void);
@@ -36261,7 +36435,7 @@ index 48bf070..66afec7 100644
  AuStubInt0(au_test_loopback_overlap, struct super_block *sb,
  	   struct dentry *h_adding)
  AuStubInt0(au_test_loopback_kthread, void)
-@@ -33,6 +37,8 @@ AuStubVoid(au_warn_loopback, struct super_block *h_sb)
+@@ -33,6 +37,8 @@
  
  AuStubInt0(au_loopback_init, void)
  AuStubVoid(au_loopback_fin, void)
@@ -36271,10 +36445,10 @@ index 48bf070..66afec7 100644
  
  #endif /* __KERNEL__ */
 diff --git a/fs/aufs/super.c b/fs/aufs/super.c
-index 58a773c..75f212c 100644
+index 0082ce4..5085378 100644
 --- a/fs/aufs/super.c
 +++ b/fs/aufs/super.c
-@@ -831,7 +831,10 @@ static const struct super_operations aufs_sop = {
+@@ -839,7 +839,10 @@ static int aufs_remount_fs(struct super_block *sb, int *flags, char *data)
  	.statfs		= aufs_statfs,
  	.put_super	= aufs_put_super,
  	.sync_fs	= aufs_sync_fs,
@@ -36287,10 +36461,10 @@ index 58a773c..75f212c 100644
  
  /* ---------------------------------------------------------------------- */
 diff --git a/include/linux/fs.h b/include/linux/fs.h
-index fc80663..0c4c6fa 100644
+index a903bc3..db820e3 100644
 --- a/include/linux/fs.h
 +++ b/include/linux/fs.h
-@@ -1814,6 +1814,10 @@ struct super_operations {
+@@ -1823,6 +1823,10 @@ struct super_operations {
  				  struct shrink_control *);
  	long (*free_cached_objects)(struct super_block *,
  				    struct shrink_control *);
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/packages/kernel.git/commitdiff/08da2677436e6020110a53b4c0698650ebe7b59d




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