[PATCH for-6.18/block 12/16] md/md-linear: convert to use bio_submit_split_bioset()

Yu Kuai
2025-09-05T07:35:55Z

From: Yu Kuai <yukuai3@huawei.com>

Unify bio split code, prepare to fix reordered split IO.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
drivers/md/md-linear.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c
index 59d7963c7843..76f85cc32942 100644
--- a/drivers/md/md-linear.c
+++ b/drivers/md/md-linear.c
@@ -256,19 +256,10 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)

if (unlikely(bio_end_sector(bio) > end_sector)) {
/* This bio crosses a device boundary, so we have to split it */
- struct bio *split = bio_split(bio, end_sector - bio_sector,
- GFP_NOIO, &mddev->bio_set);
-
- if (IS_ERR(split)) {
- bio->bi_status = errno_to_blk_status(PTR_ERR(split));
- bio_endio(bio);
+ bio = bio_submit_split_bioset(bio, end_sector - bio_sector,
+ &mddev->bio_set);
+ if (!bio)
return true;
- }
-
- bio_chain(split, bio);
- trace_block_split(split, bio->bi_iter.bi_sector);
- submit_bio_noacct(bio);
- bio = split;
}

md_account_bio(mddev, &bio);
--
2.39.2