[PATCH v3 3/8] nvme-loop: quiesce/unquiesce admin_q instead of start/stop its hw queues
From: Sagi Grimberg <sagi@grimberg.me>
Date: 2017-07-05 17:00:32
Also in:
linux-nvme
Subsystem:
nvm express target driver, the rest · Maintainers:
Christoph Hellwig, Sagi Grimberg, Chaitanya Kulkarni, Linus Torvalds
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 <redacted> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> --- 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 3d51341e62ee..6a0b70685e77 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