diff mbox series

[v3,04/19] fs: buffer: use __bio_add_page to add single page to bio

Message ID 20230419140929.5924-5-jth@kernel.org (mailing list archive)
State New, archived
Headers show
Series bio: check return values of bio_add_page | expand

Commit Message

Johannes Thumshirn April 19, 2023, 2:09 p.m. UTC 
From: Johannes Thumshirn <johannes.thumshirn@wdc.com>

The buffer_head 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>
---
 fs/buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/buffer.c b/fs/buffer.c
index 9e1e2add541e..855dc41fe162 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2733,7 +2733,7 @@  static void submit_bh_wbc(blk_opf_t opf, struct buffer_head *bh,
 
 	bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
 
-	bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
+	__bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
 	BUG_ON(bio->bi_iter.bi_size != bh->b_size);
 
 	bio->bi_end_io = end_bio_bh_io_sync;