evie/android_kernel_oneplus_msm8998
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f2fs: skip checkpoint if there is no dirty and prefree segments

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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>
This commit is contained in:
Jaegeuk Kim 2015-08-11 21:59:49 -07:00
parent 31696580bf
commit 798c1b16d1
1 changed files with 5 additions and 3 deletions
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6
fs/f2fs/gc.c
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@ -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) 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 gc_type = BG_GC;
int nfree = 0; int nfree = 0;
int ret = -1; int ret = -1;
@ -811,10 +812,11 @@ gc_more:
if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) { if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) {
gc_type = FG_GC; gc_type = FG_GC;
if (__get_victim(sbi, &segno, gc_type) || prefree_segments(sbi))
write_checkpoint(sbi, &cpc); write_checkpoint(sbi, &cpc);
} }
if (!__get_victim(sbi, &segno, gc_type)) if (segno == NULL_SEGNO && !__get_victim(sbi, &segno, gc_type))
goto stop; goto stop;
ret = 0; ret = 0;