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| author | Chao Yu <chao2.yu@samsung.com> | 2014-02-27 19:12:24 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-02-27 20:40:36 +0900 |
| commit | 81c1a0f13e6306a76fc3743b8504085d96659a5f (patch) | |
| tree | 977ddb17842f5ae24856c1fdf7192d1ae1666840 /fs/f2fs/gc.c | |
| parent | ab9fa662e4867455f44f4de96d29a7f09cf292c6 (diff) | |
| download | linux-81c1a0f13e6306a76fc3743b8504085d96659a5f.tar.gz linux-81c1a0f13e6306a76fc3743b8504085d96659a5f.tar.xz | |
f2fs: readahead contiguous SSA blocks for f2fs_gc
If there are multi segments in one section, we will read those SSA blocks which
have contiguous address one by one in f2fs_gc. It may lost performance, let's
read ahead SSA blocks by merge multi read request.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/gc.c')
| -rw-r--r-- | fs/f2fs/gc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index b161db4a96a4..d94acbc3d928 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -708,6 +708,11 @@ gc_more: goto stop; ret = 0; + /* readahead multi ssa blocks those have contiguous address */ + if (sbi->segs_per_sec > 1) + ra_meta_pages(sbi, GET_SUM_BLOCK(sbi, segno), sbi->segs_per_sec, + META_SSA); + for (i = 0; i < sbi->segs_per_sec; i++) do_garbage_collect(sbi, segno + i, &ilist, gc_type); |