From c1c0ffff3a99caf40c3bd21447135db459194123 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Sun, 2 Jul 2017 15:40:17 +0300 Subject: [PATCH] nvme-loop: quiesce/unquiesce admin_q instead of start/stop its hw queues unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues quiescing/unquiescing respects the submission path rcu grace. Reviewed-by: Ming Lei Signed-off-by: Sagi Grimberg --- drivers/nvme/target/loop.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index 3d51341..6a0b706 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -434,9 +434,10 @@ static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl) if (ctrl->ctrl.state == NVME_CTRL_LIVE) nvme_shutdown_ctrl(&ctrl->ctrl); - blk_mq_stop_hw_queues(ctrl->ctrl.admin_q); + blk_mq_quiesce_queue(ctrl->ctrl.admin_q); blk_mq_tagset_busy_iter(&ctrl->admin_tag_set, nvme_cancel_request, &ctrl->ctrl); + blk_mq_unquiesce_queue(ctrl->ctrl.admin_q); nvme_loop_destroy_admin_queue(ctrl); } -- 2.7.4