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f2fs: check blkaddr more accuratly before issue a bio 

This patch check blkaddr more accuratly before issue a
write or read bio.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Yunlei He 2018-03-08 16:29:13 +08:00 committed by Jaegeuk Kim
parent 02117b8ae9
commit 0833721ec3
4 changed files with 25 additions and 8 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -68,6 +68,7 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
.old_blkaddr = index,
.new_blkaddr = index,
.encrypted_page = NULL,
.is_meta = is_meta,
};
if (unlikely(!is_meta))
@ -162,6 +163,7 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
.op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
.encrypted_page = NULL,
.in_list = false,
.is_meta = (type != META_POR),
};
struct blk_plug plug;

5
fs/f2fs/data.c
View File

@ -383,6 +383,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
struct page *page = fio->encrypted_page ?
fio->encrypted_page : fio->page;
verify_block_addr(fio, fio->new_blkaddr);
trace_f2fs_submit_page_bio(page, fio);
f2fs_trace_ios(fio, 0);
@ -428,8 +429,8 @@ int f2fs_submit_page_write(struct f2fs_io_info *fio)
}
if (fio->old_blkaddr != NEW_ADDR)
verify_block_addr(sbi, fio->old_blkaddr);
verify_block_addr(sbi, fio->new_blkaddr);
verify_block_addr(fio, fio->old_blkaddr);
verify_block_addr(fio, fio->new_blkaddr);
bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page;

1
fs/f2fs/f2fs.h
View File

@ -1001,6 +1001,7 @@ struct f2fs_io_info {
bool submitted; /* indicate IO submission */
int need_lock; /* indicate we need to lock cp_rwsem */
bool in_list; /* indicate fio is in io_list */
bool is_meta; /* indicate borrow meta inode mapping or not */
enum iostat_type io_type; /* io type */
struct writeback_control *io_wbc; /* writeback control */
};

25
fs/f2fs/segment.h
View File

@ -53,13 +53,19 @@
((secno) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \
(sbi)->segs_per_sec)) \
#define MAIN_BLKADDR(sbi) (SM_I(sbi)->main_blkaddr)
#define SEG0_BLKADDR(sbi) (SM_I(sbi)->seg0_blkaddr)
#define MAIN_BLKADDR(sbi) \
(SM_I(sbi) ? SM_I(sbi)->main_blkaddr : \
le32_to_cpu(F2FS_RAW_SUPER(sbi)->main_blkaddr))
#define SEG0_BLKADDR(sbi) \
(SM_I(sbi) ? SM_I(sbi)->seg0_blkaddr : \
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment0_blkaddr))
#define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments)
#define MAIN_SECS(sbi) ((sbi)->total_sections)
#define TOTAL_SEGS(sbi) (SM_I(sbi)->segment_count)
#define TOTAL_SEGS(sbi) \
(SM_I(sbi) ? SM_I(sbi)->segment_count : \
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count))
#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << (sbi)->log_blocks_per_seg)
#define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi))
@ -632,10 +638,17 @@ static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno)
f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1);
}
static inline void verify_block_addr(struct f2fs_sb_info *sbi, block_t blk_addr)
static inline void verify_block_addr(struct f2fs_io_info *fio, block_t blk_addr)
{
BUG_ON(blk_addr < SEG0_BLKADDR(sbi)
|| blk_addr >= MAX_BLKADDR(sbi));
struct f2fs_sb_info *sbi = fio->sbi;
if (PAGE_TYPE_OF_BIO(fio->type) == META &&
(!is_read_io(fio->op) || fio->is_meta))
BUG_ON(blk_addr < SEG0_BLKADDR(sbi) ||
blk_addr >= MAIN_BLKADDR(sbi));
else
BUG_ON(blk_addr < MAIN_BLKADDR(sbi) ||
blk_addr >= MAX_BLKADDR(sbi));
}
/*