On Thu, Mar 30, 2023 at 3:44 AM Johannes Thumshirn
[off-list ref] wrote:

The raid5-ppl 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. For adding consecutive pages, the return is actually checked and
a new bio is allocated if adding the page fails.

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 <redacted>
Reviewed-by: Damien Le Moal <redacted>

Acked-by: Song Liu <song@kernel.org>