[PATCH] f2fs: skip checkpoint if there is no dirty and prefree segments

[Jaegeuk Kim]

We should avoid needless checkpoints when there is no dirty and prefree segment.

Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
 fs/f2fs/gc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index fcb263a..98bf538 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -811,7 +811,8 @@ gc_more:
 
 	if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) {
 		gc_type = FG_GC;
-		write_checkpoint(sbi, &cpc);
+		if (dirty_segments(sbi) || prefree_segments(sbi))
+			write_checkpoint(sbi, &cpc);
 	}
 
 	if (!__get_victim(sbi, &segno, gc_type))
-- 
2.1.1

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