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f2fs: fix to enable readahead for SSA/CP blocks

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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>
This commit is contained in:
Chao Yu 2014-12-08 14:56:19 +08:00 committed by Jaegeuk Kim
parent 03e14d522e
commit 13da549460
1 changed files with 15 additions and 2 deletions
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17
fs/f2fs/checkpoint.c
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@ -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;