diff options
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index d44d287cdae9..a1786d680906 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -72,7 +72,23 @@ out: return page; } -static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) +struct page *get_meta_page_ra(struct f2fs_sb_info *sbi, pgoff_t index) +{ + bool readahead = false; + struct page *page; + + page = find_get_page(META_MAPPING(sbi), index); + if (!page || (page && !PageUptodate(page))) + readahead = true; + f2fs_put_page(page, 0); + + if (readahead) + ra_meta_pages(sbi, index, + MAX_BIO_BLOCKS(max_hw_blocks(sbi)), META_POR); + return get_meta_page(sbi, index); +} + +static inline block_t get_max_meta_blks(struct f2fs_sb_info *sbi, int type) { switch (type) { case META_NAT: @@ -82,6 +98,8 @@ static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) case META_SSA: case META_CP: return 0; + case META_POR: + return SM_I(sbi)->seg0_blkaddr + TOTAL_BLKS(sbi); default: BUG(); } @@ -90,12 +108,13 @@ static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) /* * Readahead CP/NAT/SIT/SSA pages */ -int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) +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; - int blkno = start; - int max_blks = get_max_meta_blks(sbi, type); + block_t blkno = start; + block_t max_blks = get_max_meta_blks(sbi, type); + block_t min_blks = SM_I(sbi)->seg0_blkaddr; struct f2fs_io_info fio = { .type = META, @@ -125,7 +144,11 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) break; case META_SSA: case META_CP: - /* get ssa/cp block addr */ + case META_POR: + if (unlikely(blkno >= max_blks)) + goto out; + if (unlikely(blkno < min_blks)) + goto out; blk_addr = blkno; break; default: |