Commit e5fa8140 authored by Aleksei Zakharov's avatar Aleksei Zakharov Committed by Jens Axboe
Browse files

block: avoid setting nr_requests to current value 



There's no reason to freeze queue and set nr_requests value
if current value is the same.

Signed-off-by: default avatarAleksei Zakharov <zakharov.a.g@yandex.ru>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f25191bb

block/blk-mq.c

+3 −0
Original line number Diff line number Diff line
@@ -3089,6 +3089,9 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr) 
	if (!set)

		return -EINVAL;



	if (q->nr_requests == nr)

		return 0;



	blk_mq_freeze_queue(q);

	blk_mq_quiesce_queue(q);