| Message ID | ef742ee32fd0623008114e929d9a3e688fd721f7.1680108414.git.johannes.thumshirn@wdc.com (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Headers | show |
| Series | bio: check return values of bio_add_page | expand |
On 3/30/23 02:05, Johannes Thumshirn wrote: > The zonefs superblock reading code uses bio_add_page() to add a page to a > newly created bio. bio_add_page() can fail, but the return value is > never checked. > > Use __bio_add_page() as adding a single page to a newly created bio is > guaranteed to succeed. > > This brings us a step closer to marking bio_add_page() as __must_check. > > Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index 23b8b299c64e..9350221abfc5 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -1128,7 +1128,7 @@ static int zonefs_read_super(struct super_block *sb) bio_init(&bio, sb->s_bdev, &bio_vec, 1, REQ_OP_READ); bio.bi_iter.bi_sector = 0; - bio_add_page(&bio, page, PAGE_SIZE, 0); + __bio_add_page(&bio, page, PAGE_SIZE, 0); ret = submit_bio_wait(&bio); if (ret)
The zonefs superblock reading code uses bio_add_page() to add a page to a newly created bio. bio_add_page() can fail, but the return value is never checked. Use __bio_add_page() as adding a single page to a newly created bio is guaranteed to succeed. This brings us a step closer to marking bio_add_page() as __must_check. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> --- fs/zonefs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)