diff options
| author | Hou Pengyang <houpengyang@huawei.com> | 2017-02-22 10:28:59 +0000 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:34:56 +0200 |
| commit | f93b94800197848e0944cd20a6e963be79f1b8b7 (patch) | |
| tree | 97b48c7e7e623c0e78260cd8e3f2e6ff294da0eb | |
| parent | d6e44a5dc3f8a6546ef1198747219f90330aa6a2 (diff) | |
f2fs: node segment is prior to data segment selected victim
As data segment gc may lead dnode dirty, so the greedy cost for data segment
should be valid blocks * 2, that is data segment is prior to node segment.
Signed-off-by: Hou Pengyang <houpengyang@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/gc.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 97f76e649..247d27ef5 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -242,6 +242,16 @@ static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int segno) return UINT_MAX - ((100 * (100 - u) * age) / (100 + u)); } +static unsigned int get_greedy_cost(struct f2fs_sb_info *sbi, + unsigned int segno) +{ + unsigned int valid_blocks = + get_valid_blocks(sbi, segno, sbi->segs_per_sec); + + return IS_DATASEG(get_seg_entry(sbi, segno)->type) ? + valid_blocks * 2 : valid_blocks; +} + static inline unsigned int get_gc_cost(struct f2fs_sb_info *sbi, unsigned int segno, struct victim_sel_policy *p) { @@ -250,7 +260,7 @@ static inline unsigned int get_gc_cost(struct f2fs_sb_info *sbi, /* alloc_mode == LFS */ if (p->gc_mode == GC_GREEDY) - return get_valid_blocks(sbi, segno, sbi->segs_per_sec); + return get_greedy_cost(sbi, segno); else return get_cb_cost(sbi, segno); } |