From: Christoph Hellwig <hch@lst.de>
Date: Fri, 26 Nov 2021 13:17:59 +0100
Subject: [PATCH] block: don't check ->rq_disk in merges
Git-commit: 79bb1dbd12005f2143670a9a4f13d91e64725717
Patch-mainline: v5.17-rc1
References: jsc#PED-1183
There is a 1:1 relationship between request_queues and gendisks now, so
no need for these extra checks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20211126121802.2090656-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
block/blk-merge.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/block/blk-merge.c b/block/blk-merge.c
index e07f5a1ae86e..4de34a332c9f 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -777,8 +777,7 @@ static struct request *attempt_merge(struct request_queue *q,
if (req_op(req) != req_op(next))
return NULL;
- if (rq_data_dir(req) != rq_data_dir(next)
- || req->rq_disk != next->rq_disk)
+ if (rq_data_dir(req) != rq_data_dir(next))
return NULL;
if (req_op(req) == REQ_OP_WRITE_SAME &&
@@ -905,10 +904,6 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
if (bio_data_dir(bio) != rq_data_dir(rq))
return false;
- /* must be same device */
- if (rq->rq_disk != bio->bi_bdev->bd_disk)
- return false;
-
/* only merge integrity protected bio into ditto rq */
if (blk_integrity_merge_bio(rq->q, rq, bio) == false)
return false;
--
2.35.3