leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

blk-mq: use bio->bi_opf after bio is checked

Browse Source 
bio->bi_opf isn't finalized before checking the bio, so use it after
submit_bio_checks() returns.

Fixes: 5b13bc8a3f ("blk-mq: cleanup request allocation")
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2021-11-27 00:19:43 +08:00 committed by Jens Axboe
parent c65e6fd460
commit 5f480b1a63
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
block/blk-mq.c
View File

@ -2713,7 +2713,6 @@ static struct request *blk_mq_get_new_requests(struct request_queue *q,
struct blk_mq_alloc_data data = {
.q = q,
.nr_tags = 1,
.cmd_flags = bio->bi_opf,
};
struct request *rq;
@ -2726,6 +2725,8 @@ static struct request *blk_mq_get_new_requests(struct request_queue *q,
rq_qos_throttle(q, bio);
/* ->bi_opf is finalized after submit_bio_checks() returns */
data.cmd_flags = bio->bi_opf;
if (plug) {
data.nr_tags = plug->nr_ios;
plug->nr_ios = 1;