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Commit 13da5494 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs: fix to enable readahead for SSA/CP blocks 



1.We use zero as upper boundary value for ra SSA/CP blocks, we will skip
readahead as verification failure with max number, it causes low performance.
2.Low boundary value is not accurate for SSA/CP/POR region verification, so
these values need to be redefined.

This patch fixes above issues.

Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 03e14d52

fs/f2fs/checkpoint.c

+15 −2
Original line number Diff line number Diff line
@@ -95,8 +95,9 @@ static inline block_t get_max_meta_blks(struct f2fs_sb_info *sbi, int type) 
	case META_SIT:

		return SIT_BLK_CNT(sbi);

	case META_SSA:

		return MAIN_BLKADDR(sbi);

	case META_CP:

		return 0;

		return SM_I(sbi)->sit_info->sit_base_addr;

	case META_POR:

		return MAX_BLKADDR(sbi);

	default:
@@ -141,11 +142,23 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type 
			prev_blk_addr = blk_addr;

			break;

		case META_SSA:

			if (unlikely(blkno >= max_blks))

				goto out;

			if (unlikely(blkno < SM_I(sbi)->ssa_blkaddr))

				goto out;

			blk_addr = blkno;

			break;

		case META_CP:

			if (unlikely(blkno >= max_blks))

				goto out;

			if (unlikely(blkno < __start_cp_addr(sbi)))

				goto out;

			blk_addr = blkno;

			break;

		case META_POR:

			if (unlikely(blkno >= max_blks))

				goto out;

			if (unlikely(blkno < SEG0_BLKADDR(sbi)))

			if (unlikely(blkno < MAIN_BLKADDR(sbi)))

				goto out;

			blk_addr = blkno;

			break;