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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-11 21:59:49 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-20 09:00:07 -0700 |
| commit | 798c1b16d1a6171587ff46c74ede8092e66f72f7 (patch) | |
| tree | 2f8e9a4996035c446dde84ac8ad7d06b345dd552 /fs/f2fs | |
| parent | 31696580bf4c042a0f7b06d855e04441488d18b1 (diff) | |
| download | lwn-798c1b16d1a6171587ff46c74ede8092e66f72f7.tar.gz lwn-798c1b16d1a6171587ff46c74ede8092e66f72f7.zip | |
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 <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/gc.c | 8 |
1 files 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; |