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f2fs: use atomic_t to record hit ratio info of extent cache

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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>
This commit is contained in:
Chao Yu
2015-07-15 17:29:49 +08:00
committed by Jaegeuk Kim
parent d5e8f6c980
commit 727edac572
3 changed files with 12 additions and 8 deletions
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7
fs/f2fs/debug.c
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@@ -33,8 +33,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
int i;
/* validation check of the segment numbers */
si->hit_ext = sbi->read_hit_ext;
si->total_ext = sbi->total_hit_ext;
si->hit_ext = atomic_read(&sbi->read_hit_ext);
si->total_ext = atomic_read(&sbi->total_hit_ext);
si->ext_tree = sbi->total_ext_tree;
si->ext_node = atomic_read(&sbi->total_ext_node);
si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
@@ -369,6 +369,9 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi)
si->sbi = sbi;
sbi->stat_info = si;
atomic_set(&sbi->total_hit_ext, 0);
atomic_set(&sbi->read_hit_ext, 0);
atomic_set(&sbi->inline_xattr, 0);
atomic_set(&sbi->inline_inode, 0);
atomic_set(&sbi->inline_dir, 0);