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authorJaegeuk Kim <jaegeuk@kernel.org>2018-02-26 15:40:30 -0800
committerJaegeuk Kim <jaegeuk@kernel.org>2018-03-13 08:05:54 +0900
commitb27bc8091ccf22f66ab105d10fa4f5cdeaef05a2 (patch)
tree9cdf5e339756f7afddc34a6bb12d3061f6f3dbaf /fs/f2fs
parentdee02f0d62fcb5033fe26f86941b9e3bdc450b74 (diff)
f2fs: do gc in greedy mode for whole range if gc_urgent mode is set
Otherwise, f2fs conducts GC on 8GB range only based on slow cost-benefit. 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.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index bc9420ce2275..bfb7a4a3a929 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -162,12 +162,17 @@ static int select_gc_type(struct f2fs_gc_kthread *gc_th, int gc_type)
{
int gc_mode = (gc_type == BG_GC) ? GC_CB : GC_GREEDY;
- if (gc_th && gc_th->gc_idle) {
+ if (!gc_th)
+ return gc_mode;
+
+ if (gc_th->gc_idle) {
if (gc_th->gc_idle == 1)
gc_mode = GC_CB;
else if (gc_th->gc_idle == 2)
gc_mode = GC_GREEDY;
}
+ if (gc_th->gc_urgent)
+ gc_mode = GC_GREEDY;
return gc_mode;
}
@@ -189,7 +194,9 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
}
/* we need to check every dirty segments in the FG_GC case */
- if (gc_type != FG_GC && p->max_search > sbi->max_victim_search)
+ if (gc_type != FG_GC &&
+ (sbi->gc_thread && !sbi->gc_thread->gc_urgent) &&
+ p->max_search > sbi->max_victim_search)
p->max_search = sbi->max_victim_search;
/* let's select beginning hot/small space first in no_heap mode*/