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| author | Chao Yu | 2015-07-15 11:29:49 +0200 |
|---|---|---|
| committer | Jaegeuk Kim | 2015-08-05 17:08:06 +0200 |
| commit | 727edac572034557d207b293a47de25145e3d58c (patch) | |
| tree | 984e7ceae8a02605c0626375f26abab96126c440 /fs/f2fs/f2fs.h | |
| parent | f2fs: stat inline xattr inode number (diff) | |
| download | kernel-qcow2-linux-727edac572034557d207b293a47de25145e3d58c.tar.gz kernel-qcow2-linux-727edac572034557d207b293a47de25145e3d58c.tar.xz kernel-qcow2-linux-727edac572034557d207b293a47de25145e3d58c.zip | |
f2fs: use atomic_t to record hit ratio info of extent cache
Variables for recording extent cache ratio info were updated without
protection, this patch tries to alter them to atomic_t type for more
accurate stat.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index b18b85267711..38ba525c3d6f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -781,7 +781,8 @@ struct f2fs_sb_info { unsigned int segment_count[2]; /* # of allocated segments */ unsigned int block_count[2]; /* # of allocated blocks */ atomic_t inplace_count; /* # of inplace update */ - int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ + atomic_t total_hit_ext; /* # of lookup extent cache */ + atomic_t read_hit_ext; /* # of hit extent cache */ atomic_t inline_xattr; /* # of inline_xattr inodes */ atomic_t inline_inode; /* # of inline_data inodes */ atomic_t inline_dir; /* # of inline_dentry inodes */ @@ -1837,8 +1838,8 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) -#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) -#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) +#define stat_inc_total_hit(sbi) (atomic_inc(&(sbi)->total_hit_ext)) +#define stat_inc_read_hit(sbi) (atomic_inc(&(sbi)->read_hit_ext)) #define stat_inc_inline_xattr(inode) \ do { \ if (f2fs_has_inline_xattr(inode)) \ |