diff mbox series

[09/19] btrfs: raid56: use __bio_add_page to add single page

Message ID 5ce38530bc488f9d4f1692d701ca7ad5ea8ca3e9.1680108414.git.johannes.thumshirn@wdc.com (mailing list archive)
State Superseded, archived
Delegated to: Mike Snitzer
Headers show
Series bio: check return values of bio_add_page | expand

Commit Message

Johannes Thumshirn March 29, 2023, 5:05 p.m. UTC 
The btrfs raid58 sector submission 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/btrfs/raid56.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Damien Le Moal March 29, 2023, 11:33 p.m. UTC | #1 
On 3/30/23 02:05, Johannes Thumshirn wrote:
> The btrfs raid58 sector submission 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>

Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
diff mbox series

Patch

diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 642828c1b299..c8173e003df6 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1108,7 +1108,7 @@  static int rbio_add_io_sector(struct btrfs_raid_bio *rbio,
 	bio->bi_iter.bi_sector = disk_start >> 9;
 	bio->bi_private = rbio;
 
-	bio_add_page(bio, sector->page, sectorsize, sector->pgoff);
+	__bio_add_page(bio, sector->page, sectorsize, sector->pgoff);
 	bio_list_add(bio_list, bio);
 	return 0;
 }