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| author | Chao Yu <chao2.yu@samsung.com> | 2014-12-08 19:08:20 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-12-08 10:54:59 -0800 |
| commit | 03e14d522eb1fdf9c0ce37085cb56749342a842c (patch) | |
| tree | 38c93ae568af7ce3ec44812db861faa0d4393158 /fs | |
| parent | 51455b19384d26afac4f214fab2ad0a4f1964e30 (diff) | |
| download | linux-03e14d522eb1fdf9c0ce37085cb56749342a842c.tar.bz2 | |
f2fs: use atomic for counting inode with inline_{dir,inode} flag
As inline_{dir,inode} stat is increased/decreased concurrently by multi threads,
so the value is not so accurate, let's use atomic type for counting accurately.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/debug.c | 7 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 12 |
2 files changed, 11 insertions, 8 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index 4e2e39c0ba69..91e8f699ab30 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -46,8 +46,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->valid_count = valid_user_blocks(sbi); si->valid_node_count = valid_node_count(sbi); si->valid_inode_count = valid_inode_count(sbi); - si->inline_inode = sbi->inline_inode; - si->inline_dir = sbi->inline_dir; + si->inline_inode = atomic_read(&sbi->inline_inode); + si->inline_dir = atomic_read(&sbi->inline_dir); si->utilization = utilization(sbi); si->free_segs = free_segments(sbi); @@ -329,6 +329,9 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi) si->sbi = sbi; sbi->stat_info = si; + atomic_set(&sbi->inline_inode, 0); + atomic_set(&sbi->inline_dir, 0); + mutex_lock(&f2fs_stat_mutex); list_add_tail(&si->stat_list, &f2fs_stat_list); mutex_unlock(&f2fs_stat_mutex); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index f60b817a7f0d..2695d78d57dd 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -590,8 +590,8 @@ struct f2fs_sb_info { unsigned int segment_count[2]; /* # of allocated segments */ unsigned int block_count[2]; /* # of allocated blocks */ int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ - int inline_inode; /* # of inline_data inodes */ - int inline_dir; /* # of inline_dentry inodes */ + atomic_t inline_inode; /* # of inline_data inodes */ + atomic_t inline_dir; /* # of inline_dentry inodes */ int bg_gc; /* background gc calls */ unsigned int n_dirty_dirs; /* # of dir inodes */ #endif @@ -1532,22 +1532,22 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) #define stat_inc_inline_inode(inode) \ do { \ if (f2fs_has_inline_data(inode)) \ - ((F2FS_I_SB(inode))->inline_inode++); \ + (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ } while (0) #define stat_dec_inline_inode(inode) \ do { \ if (f2fs_has_inline_data(inode)) \ - ((F2FS_I_SB(inode))->inline_inode--); \ + (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ } while (0) #define stat_inc_inline_dir(inode) \ do { \ if (f2fs_has_inline_dentry(inode)) \ - ((F2FS_I_SB(inode))->inline_dir++); \ + (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ } while (0) #define stat_dec_inline_dir(inode) \ do { \ if (f2fs_has_inline_dentry(inode)) \ - ((F2FS_I_SB(inode))->inline_dir--); \ + (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ } while (0) #define stat_inc_seg_type(sbi, curseg) \ ((sbi)->segment_count[(curseg)->alloc_type]++) |