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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2014-02-24 08:00:13 +0400
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2014-02-24 11:00:41 +0400
commit8b8343fa9d503894ece57acbe46cb36883646685 (patch)
treea8650f40e45644e91aad8298038aee3c024a80d8 /fs/f2fs/segment.h
parent8a7ed66aaf8ee56b0a6beee4d02e10af5a9e38b2 (diff)
downloadlinux-8b8343fa9d503894ece57acbe46cb36883646685.tar.xz
f2fs: implement a lock-free stat_show
The stat_show is just to show the current status of f2fs. So, we can remove all the there-in locks. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/segment.h')
-rw-r--r--fs/f2fs/segment.h27
1 files changed, 3 insertions, 24 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 4024546b6361..c3d5e3689ffc 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -380,26 +380,12 @@ static inline void get_sit_bitmap(struct f2fs_sb_info *sbi,
static inline block_t written_block_count(struct f2fs_sb_info *sbi)
{
- struct sit_info *sit_i = SIT_I(sbi);
- block_t vblocks;
-
- mutex_lock(&sit_i->sentry_lock);
- vblocks = sit_i->written_valid_blocks;
- mutex_unlock(&sit_i->sentry_lock);
-
- return vblocks;
+ return SIT_I(sbi)->written_valid_blocks;
}
static inline unsigned int free_segments(struct f2fs_sb_info *sbi)
{
- struct free_segmap_info *free_i = FREE_I(sbi);
- unsigned int free_segs;
-
- read_lock(&free_i->segmap_lock);
- free_segs = free_i->free_segments;
- read_unlock(&free_i->segmap_lock);
-
- return free_segs;
+ return FREE_I(sbi)->free_segments;
}
static inline int reserved_segments(struct f2fs_sb_info *sbi)
@@ -409,14 +395,7 @@ static inline int reserved_segments(struct f2fs_sb_info *sbi)
static inline unsigned int free_sections(struct f2fs_sb_info *sbi)
{
- struct free_segmap_info *free_i = FREE_I(sbi);
- unsigned int free_secs;
-
- read_lock(&free_i->segmap_lock);
- free_secs = free_i->free_sections;
- read_unlock(&free_i->segmap_lock);
-
- return free_secs;
+ return FREE_I(sbi)->free_sections;
}
static inline unsigned int prefree_segments(struct f2fs_sb_info *sbi)