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Commit aca911bb authored by Yunlei He's avatar Yunlei He Committed by Jaegeuk Kim
Browse files

f2fs: add a new function get_ssr_cost 



commit b7b7c4cf1c9ef0272a65f1480457cbfdadcda19d upstream.

This patch add a new method get_ssr_cost to select
SSR segment more accurately.

Signed-off-by: default avatarYunlei He <heyunlei@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 9d3833d5

fs/f2fs/gc.c

+10 −1
Original line number Diff line number Diff line
@@ -258,11 +258,20 @@ static unsigned int get_greedy_cost(struct f2fs_sb_info *sbi, 
				valid_blocks * 2 : valid_blocks;

}



static unsigned int get_ssr_cost(struct f2fs_sb_info *sbi,

						unsigned int segno)

{

	struct seg_entry *se = get_seg_entry(sbi, segno);



	return se->ckpt_valid_blocks > se->valid_blocks ?

				se->ckpt_valid_blocks : se->valid_blocks;

}



static inline unsigned int get_gc_cost(struct f2fs_sb_info *sbi,

			unsigned int segno, struct victim_sel_policy *p)

{

	if (p->alloc_mode == SSR)

		return get_seg_entry(sbi, segno)->ckpt_valid_blocks;

		return get_ssr_cost(sbi, segno);



	/* alloc_mode == LFS */

	if (p->gc_mode == GC_GREEDY)