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authorJaegeuk Kim <jaegeuk@kernel.org>2020-11-07 00:22:05 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2020-12-03 11:59:26 +0300
commita95ba66ac1457b76fe472c8e092ab1006271f16c (patch)
tree2ec5e949c50264adc344407585fd6cc3ffc7f964 /fs/f2fs/checkpoint.c
parent5fdb322ff2c2b4ad519f490dcb7ebb96c5439af7 (diff)
downloadlinux-a95ba66ac1457b76fe472c8e092ab1006271f16c.tar.xz
f2fs: avoid race condition for shrinker count
Light reported sometimes shinker gets nat_cnt < dirty_nat_cnt resulting in wrong do_shinker work. Let's avoid to return insane overflowed value by adding single tracking value. Reported-by: Light Hsieh <Light.Hsieh@mediatek.com> Reviewed-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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 14ba1519639e..617d0f6b0836 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1619,7 +1619,7 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
goto out;
}
- if (NM_I(sbi)->dirty_nat_cnt == 0 &&
+ if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
SIT_I(sbi)->dirty_sentries == 0 &&
prefree_segments(sbi) == 0) {
f2fs_flush_sit_entries(sbi, cpc);