From 798c1b16d1a6171587ff46c74ede8092e66f72f7 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 11 Aug 2015 21:59:49 -0700 Subject: [PATCH] f2fs: skip checkpoint if there is no dirty and prefree segments We should avoid needless checkpoints when there is no dirty and prefree segment. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index fcb263af58b3..81de28d8326f 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -792,7 +792,8 @@ static void do_garbage_collect(struct f2fs_sb_info *sbi, unsigned int segno, int f2fs_gc(struct f2fs_sb_info *sbi) { - unsigned int segno, i; + unsigned int segno = NULL_SEGNO; + unsigned int i; int gc_type = BG_GC; int nfree = 0; int ret = -1; @@ -811,10 +812,11 @@ gc_more: if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) { gc_type = FG_GC; - write_checkpoint(sbi, &cpc); + if (__get_victim(sbi, &segno, gc_type) || prefree_segments(sbi)) + write_checkpoint(sbi, &cpc); } - if (!__get_victim(sbi, &segno, gc_type)) + if (segno == NULL_SEGNO && !__get_victim(sbi, &segno, gc_type)) goto stop; ret = 0; -- 2.34.1