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| author | Chao Yu <yuchao0@huawei.com> | 2019-05-05 11:40:46 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-05-08 21:23:13 -0700 |
| commit | c9c8ed50d94c613fc3f4917c51e9c75d493a312e (patch) | |
| tree | 161bfa38f995f3fceae4c60d4d9ba1f85384a7f2 /fs/f2fs/checkpoint.c | |
| parent | d764834378a9870ca56e9b2977ea46e9911ec358 (diff) | |
| download | linux-c9c8ed50d94c613fc3f4917c51e9c75d493a312e.tar.gz | |
f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
Use sbi.stat_lock to protect sbi->unusable_block_count accesss/udpate, in
order to avoid potential race on it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 805a33088e82..ed70b68b2b38 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1536,7 +1536,11 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) clear_sbi_flag(sbi, SBI_IS_DIRTY); clear_sbi_flag(sbi, SBI_NEED_CP); clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); + + spin_lock(&sbi->stat_lock); sbi->unusable_block_count = 0; + spin_unlock(&sbi->stat_lock); + __set_cp_next_pack(sbi); /* |