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authorChao Yu <chao2.yu@samsung.com>2014-02-27 19:12:24 +0800
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2014-02-27 20:40:36 +0900
commit81c1a0f13e6306a76fc3743b8504085d96659a5f (patch)
tree977ddb17842f5ae24856c1fdf7192d1ae1666840 /fs/f2fs/gc.c
parentab9fa662e4867455f44f4de96d29a7f09cf292c6 (diff)
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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.c5
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);
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