1 files changed, 25 insertions, 11 deletions

diff --git a/fs/aufs/super.h b/fs/aufs/super.h
index 23d03a067..b8ca14994 100644
--- a/fs/aufs/super.h
+++ b/fs/aufs/super.h
@@ -91,7 +91,7 @@ struct au_sbinfo {
 	 * dirty approach to protect sb->sb_inodes and ->s_files (gone) from
 	 * remount.
 	 */
-	atomic_long_t		si_ninodes, si_nfiles;
+	struct percpu_counter	si_ninodes, si_nfiles;
 
 	/* branch management */
 	unsigned int		si_generation;
@@ -99,7 +99,7 @@ struct au_sbinfo {
 	/* see AuSi_ flags */
 	unsigned char		au_si_status;
 
-	aufs_bindex_t		si_bend;
+	aufs_bindex_t		si_bbot;
 
 	/* dirty trick to keep br_id plus */
 	unsigned int		si_last_br_id :
@@ -285,7 +285,7 @@ extern struct au_wbr_copyup_operations au_wbr_copyup_ops[];
 extern struct au_wbr_create_operations au_wbr_create_ops[];
 int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst);
 int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex);
-int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t bstart);
+int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop);
 
 /* mvdown.c */
 int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg);
@@ -548,10 +548,10 @@ static inline void si_downgrade_lock(struct super_block *sb)
 
 /* ---------------------------------------------------------------------- */
 
-static inline aufs_bindex_t au_sbend(struct super_block *sb)
+static inline aufs_bindex_t au_sbbot(struct super_block *sb)
 {
 	SiMustAnyLock(sb);
-	return au_sbi(sb)->si_bend;
+	return au_sbi(sb)->si_bbot;
 }
 
 static inline unsigned int au_mntflags(struct super_block *sb)
@@ -566,26 +566,40 @@ static inline unsigned int au_sigen(struct super_block *sb)
 	return au_sbi(sb)->si_generation;
 }
 
+static inline unsigned long long au_ninodes(struct super_block *sb)
+{
+	s64 n = percpu_counter_sum(&au_sbi(sb)->si_ninodes);
+
+	BUG_ON(n < 0);
+	return n;
+}
+
 static inline void au_ninodes_inc(struct super_block *sb)
 {
-	atomic_long_inc(&au_sbi(sb)->si_ninodes);
+	percpu_counter_inc(&au_sbi(sb)->si_ninodes);
 }
 
 static inline void au_ninodes_dec(struct super_block *sb)
 {
-	AuDebugOn(!atomic_long_read(&au_sbi(sb)->si_ninodes));
-	atomic_long_dec(&au_sbi(sb)->si_ninodes);
+	percpu_counter_dec(&au_sbi(sb)->si_ninodes);
+}
+
+static inline unsigned long long au_nfiles(struct super_block *sb)
+{
+	s64 n = percpu_counter_sum(&au_sbi(sb)->si_nfiles);
+
+	BUG_ON(n < 0);
+	return n;
 }
 
 static inline void au_nfiles_inc(struct super_block *sb)
 {
-	atomic_long_inc(&au_sbi(sb)->si_nfiles);
+	percpu_counter_inc(&au_sbi(sb)->si_nfiles);
 }
 
 static inline void au_nfiles_dec(struct super_block *sb)
 {
-	AuDebugOn(!atomic_long_read(&au_sbi(sb)->si_nfiles));
-	atomic_long_dec(&au_sbi(sb)->si_nfiles);
+	percpu_counter_dec(&au_sbi(sb)->si_nfiles);
 }
 
 static inline struct au_branch *au_sbr(struct super_block *sb,