f2fs: fix to enable readahead for SSA/CP blocks (13da5494) · Commits · 戴 / test

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:

Chao Yu <chao2.yu@samsung.com> Signed-off-by:

Jaegeuk Kim <jaegeuk@kernel.org>

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;

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