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Commit b27bc809 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

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: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent dee02f0d

fs/f2fs/gc.c

+9 −2
Original line number Diff line number Diff line
@@ -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*/