Commit 37345eae authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: fix to not account invalid blocks in get_left_section_blocks() 



w/ LFS mode, in get_left_section_blocks(), we should not account the
blocks which were used before and now are invalided, otherwise those
blocks will be counted as freed one in has_curseg_enough_space(), result
in missing to trigger GC in time.

Cc: stable@kernel.org
Fixes: 249ad438 ("f2fs: add a method for calculating the remaining blocks in the current segment in LFS mode.")
Fixes: bf34c93d ("f2fs: check curseg space before foreground GC")
Signed-off-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 8f11fe52

fs/f2fs/segment.h

+5 −3
Original line number Diff line number Diff line
@@ -612,10 +612,12 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi) 
static inline unsigned int get_left_section_blocks(struct f2fs_sb_info *sbi,

					enum log_type type, unsigned int segno)

{

	if (f2fs_lfs_mode(sbi) && __is_large_section(sbi))

		return CAP_BLKS_PER_SEC(sbi) - SEGS_TO_BLKS(sbi,

			(segno - GET_START_SEG_FROM_SEC(sbi, segno))) -

	if (f2fs_lfs_mode(sbi)) {

		unsigned int used_blocks = __is_large_section(sbi) ? SEGS_TO_BLKS(sbi,

				(segno - GET_START_SEG_FROM_SEC(sbi, segno))) : 0;

		return CAP_BLKS_PER_SEC(sbi) - used_blocks -

			CURSEG_I(sbi, type)->next_blkoff;

	}

	return CAP_BLKS_PER_SEC(sbi) - get_ckpt_valid_blocks(sbi, segno, true);

}