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| author | Hou Pengyang <houpengyang@huawei.com> | 2017-02-22 13:28:59 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-02-24 20:39:40 +0300 |
| commit | b9cd20619e359d199b755543474c3d853c8e3415 (patch) | |
| tree | 1a7b541e013fce974a0bf83179d3869621a9b0df /fs/f2fs | |
| parent | 3436c4bdb30de421d46f58c9174669fbcfd40ce0 (diff) | |
| download | linux-b9cd20619e359d199b755543474c3d853c8e3415.tar.xz | |
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>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -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 e93aecb0138b..11416c7cb705 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); } |