Commit 62867a04 authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

selftests: ublk: setup ring with IORING_SETUP_SINGLE_ISSUER/IORING_SETUP_DEFER_TASKRUN 



It is observed that this way is more efficient for fast nvme backing
file.

Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250412023035.2649275-8-ming.lei@redhat.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d836590d

tools/testing/selftests/ublk/kublk.c

+3 −1
Original line number Diff line number Diff line
@@ -346,7 +346,9 @@ static int ublk_queue_init(struct ublk_queue *q) 
	}



	ret = ublk_setup_ring(&q->ring, ring_depth, cq_depth,

			IORING_SETUP_COOP_TASKRUN);

			IORING_SETUP_COOP_TASKRUN |

			IORING_SETUP_SINGLE_ISSUER |

			IORING_SETUP_DEFER_TASKRUN);

	if (ret < 0) {

		ublk_err("ublk dev %d queue %d setup io_uring failed %d\n",

				q->dev->dev_info.dev_id, q->q_id, ret);