f2fs: shrink extent_cache entries
This patch registers shrinking extent_caches.
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d5ee992..f7bfc3b 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -304,7 +304,8 @@
void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
{
/* try to shrink extent cache when there is no enough memory */
- f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
+ if (!available_free_memory(sbi, EXTENT_CACHE))
+ f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
/* check the # of cached NAT entries */
if (!available_free_memory(sbi, NAT_ENTRIES))