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Subject[PATCH 1/5] f2fs: avoid to drop nat entries due to the negative nr_shrink
Date
The try_to_free_nats should not receive the negative nr_shrink.
Otherwise, it can drop all the nat entries by the while loop.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
---
fs/f2fs/node.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 707fd20..04450a5 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -208,7 +208,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);

- if (nm_i->nat_cnt <= NM_WOUT_THRESHOLD)
+ if (nm_i->nat_cnt <= NM_WOUT_THRESHOLD || nr_shrink <= 0)
return 0;

write_lock(&nm_i->nat_tree_lock);
--
1.8.4.474.g128a96c


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