Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b9cd2061 authored by Hou Pengyang's avatar Hou Pengyang Committed by Jaegeuk Kim
Browse files

f2fs: node segment is prior to data segment selected victim 



As data segment gc may lead dnode dirty, so the greedy cost for data segment
should be valid blocks * 2, that is data segment is prior to node segment.

Signed-off-by: default avatarHou Pengyang <houpengyang@huawei.com>
Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 3436c4bd

fs/f2fs/gc.c

+11 −1
Original line number Diff line number Diff line
@@ -242,6 +242,16 @@ static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int segno) 
	return UINT_MAX - ((100 * (100 - u) * age) / (100 + u));

}



static unsigned int get_greedy_cost(struct f2fs_sb_info *sbi,

						unsigned int segno)

{

	unsigned int valid_blocks =

			get_valid_blocks(sbi, segno, sbi->segs_per_sec);



	return IS_DATASEG(get_seg_entry(sbi, segno)->type) ?

				valid_blocks * 2 : valid_blocks;

}



static inline unsigned int get_gc_cost(struct f2fs_sb_info *sbi,

			unsigned int segno, struct victim_sel_policy *p)

{
@@ -250,7 +260,7 @@ static inline unsigned int get_gc_cost(struct f2fs_sb_info *sbi, 


	/* alloc_mode == LFS */

	if (p->gc_mode == GC_GREEDY)

		return get_valid_blocks(sbi, segno, sbi->segs_per_sec);

		return get_greedy_cost(sbi, segno);

	else

		return get_cb_cost(sbi, segno);

}