From: Yu Kuai <yukuai3@xxxxxxxxxx>
On the one hand unify bio split code, prepare to fix disordered split
IO; On the other hand fix missing blkcg_bio_issue_init() and
trace_block_split() for split IO.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/md-linear.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c
index 5d9b08115375..61375c61e4aa 100644
--- a/drivers/md/md-linear.c
+++ b/drivers/md/md-linear.c
@@ -256,18 +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(bio, end_sector - bio_sector,
+ &mddev->bio_set);
+ if (!bio)
return true;
- }
-
- bio_chain(split, bio);
- submit_bio_noacct(bio);
- bio = split;
}
md_account_bio(mddev, &bio);
--
2.39.2
