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Commit 60374688 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: allocate remained free segments in the LFS mode 



This patch adds a new condition that allocates free segments in the current
active section even if SSR is needed.
Otherwise, f2fs cannot allocate remained free segments in the section since
SSR finds dirty segments only.

Reviewed-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
parent 4ebefc44

fs/f2fs/segment.c

+13 −0
Original line number Diff line number Diff line
@@ -347,6 +347,17 @@ static unsigned int check_prefree_segments(struct f2fs_sb_info *sbi, int type) 
	return NULL_SEGNO;

}



static int is_next_segment_free(struct f2fs_sb_info *sbi, int type)

{

	struct curseg_info *curseg = CURSEG_I(sbi, type);

	unsigned int segno = curseg->segno;

	struct free_segmap_info *free_i = FREE_I(sbi);



	if (segno + 1 < TOTAL_SEGS(sbi) && (segno + 1) % sbi->segs_per_sec)

		return !test_bit(segno + 1, free_i->free_segmap);

	return 0;

}



/*

 * Find a new segment from the free segments bitmap to right order

 * This function should be returned with success, otherwise BUG
@@ -580,6 +591,8 @@ static void allocate_segment_by_default(struct f2fs_sb_info *sbi, 
		change_curseg(sbi, type, false);

	else if (type == CURSEG_WARM_NODE)

		new_curseg(sbi, type, false);

	else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type))

		new_curseg(sbi, type, false);

	else if (need_SSR(sbi) && get_ssr_segment(sbi, type))

		change_curseg(sbi, type, true);

	else