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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-02-18 08:50:49 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-03-13 08:05:50 +0900 |
| commit | 079396270b0f1e98496ef7672dd754bdd42574dc (patch) | |
| tree | d43fd93275089f03879da9315eafb5cf6b90b854 /fs/f2fs/segment.c | |
| parent | 69babac019337b35aae5644ccf8089243c749d4c (diff) | |
| download | lwn-079396270b0f1e98496ef7672dd754bdd42574dc.tar.gz lwn-079396270b0f1e98496ef7672dd754bdd42574dc.zip | |
f2fs: add mount option for segment allocation policy
This patch adds an mount option, "alloc_mode=%s" having two options, "default"
and "reuse".
In "alloc_mode=reuse" case, f2fs starts to allocate segments from 0'th segment
all the time to reassign segments. It'd be useful for small-sized eMMC parts.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 0646d5de8cd0..5e5e2936a26a 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2170,6 +2170,11 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) return SIT_I(sbi)->last_victim[ALLOC_NEXT]; + + /* find segments from 0 to reuse freed segments */ + if (sbi->alloc_mode == ALLOC_MODE_REUSE) + return 0; + return CURSEG_I(sbi, type)->segno; } |