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Subject[PATCH 4/4] f2fs: avoid frequent checkpoint during f2fs_gc
Date
Now we're doing SSR aggressively more than ever before, so once we reach to
the reserved_segment, f2fs_balance_fs will call f2fs_gc, which triggers
checkpoint everytime. We actually must avoid that.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/gc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e2f9b2b12b74..4a720f3394d9 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -966,7 +966,11 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background)
* threshold, we can make them free by checkpoint. Then, we
* secure free segments which doesn't need fggc any more.
*/
- ret = write_checkpoint(sbi, &cpc);
+ if (prefree_segments(sbi)) {
+ ret = write_checkpoint(sbi, &cpc);
+ if (ret)
+ goto stop;
+ }
if (ret)
goto stop;
if (has_not_enough_free_secs(sbi, 0, 0))
--
2.11.0
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