[PATCH v5 05/20] md: use __bio_add_page to add single page

Johannes Thumshirn
2023-05-02T15:38:16Z

The md-raid superblock writing 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-of_-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Song Liu <song@kernel.org>
---
drivers/md/md.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8e344b4b3444..6a559a7e89c0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -938,7 +938,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
atomic_inc(&rdev->nr_pending);

bio->bi_iter.bi_sector = sector;
- bio_add_page(bio, page, size, 0);
+ __bio_add_page(bio, page, size, 0);
bio->bi_private = rdev;
bio->bi_end_io = super_written;

@@ -979,7 +979,7 @@ int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
bio.bi_iter.bi_sector = sector + rdev->new_data_offset;
else
bio.bi_iter.bi_sector = sector + rdev->data_offset;
- bio_add_page(&bio, page, size, 0);
+ __bio_add_page(&bio, page, size, 0);

submit_bio_wait(&bio);

--
2.40.0