diff options
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index f3ebfb5..b2d5431 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -87,22 +87,36 @@ struct page *get_meta_page_ra(struct f2fs_sb_info *sbi, pgoff_t index) return get_meta_page(sbi, index); } -static inline block_t get_max_meta_blks(struct f2fs_sb_info *sbi, int type) +static inline bool is_valid_blkaddr(struct f2fs_sb_info *sbi, + block_t blkaddr, int type) { switch (type) { case META_NAT: - return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK; + break; case META_SIT: - return SIT_BLK_CNT(sbi); + if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) + return false; + break; case META_SSA: - return MAIN_BLKADDR(sbi); + if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || + blkaddr < SM_I(sbi)->ssa_blkaddr)) + return false; + break; case META_CP: - return SM_I(sbi)->sit_info->sit_base_addr; + if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || + blkaddr < __start_cp_addr(sbi))) + return false; + break; case META_POR: - return MAX_BLKADDR(sbi); + if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || + blkaddr < MAIN_BLKADDR(sbi))) + return false; + break; default: BUG(); } + + return true; } /* @@ -113,7 +127,6 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type block_t prev_blk_addr = 0; struct page *page; block_t blkno = start; - block_t max_blks = get_max_meta_blks(sbi, type); struct f2fs_io_info fio = { .type = META, @@ -123,18 +136,20 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type for (; nrpages-- > 0; blkno++) { block_t blk_addr; + if (!is_valid_blkaddr(sbi, blkno, type)) + goto out; + switch (type) { case META_NAT: - /* get nat block addr */ - if (unlikely(blkno >= max_blks)) + if (unlikely(blkno >= + NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) blkno = 0; + /* get nat block addr */ blk_addr = current_nat_addr(sbi, blkno * NAT_ENTRY_PER_BLOCK); break; case META_SIT: /* get sit block addr */ - if (unlikely(blkno >= max_blks)) - goto out; blk_addr = current_sit_addr(sbi, blkno * SIT_ENTRY_PER_BLOCK); if (blkno != start && prev_blk_addr + 1 != blk_addr) @@ -142,24 +157,8 @@ 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 < MAIN_BLKADDR(sbi))) - goto out; blk_addr = blkno; break; default: |
