diff options
| author | Sagi Grimberg <sagi@grimberg.me> | 2017-07-02 15:33:32 +0300 |
|---|---|---|
| committer | Sagi Grimberg <sagi@grimberg.me> | 2017-07-06 09:47:58 +0300 |
| commit | fb051339727cd8134dd6ef0305a120e6e265dded (patch) | |
| tree | 683f0c6eff90986f1358b866b313ee14b7d81114 /drivers/nvme/host/rdma.c | |
| parent | 5e599d73c1c1816af07f94ddba879499aa39b43c (diff) | |
| download | lwn-fb051339727cd8134dd6ef0305a120e6e265dded.tar.gz lwn-fb051339727cd8134dd6ef0305a120e6e265dded.zip | |
nvme-rdma: 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.
Also make sure to kick the requeue list when appropriate.
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/nvme/host/rdma.c')
| -rw-r--r-- | drivers/nvme/host/rdma.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 0ab163e6e640..6f8f9ffcbc00 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -779,7 +779,7 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work) if (ctrl->ctrl.queue_count > 1) nvme_stop_queues(&ctrl->ctrl); - blk_mq_stop_hw_queues(ctrl->ctrl.admin_q); + blk_mq_quiesce_queue(ctrl->ctrl.admin_q); /* We must take care of fastfail/requeue all our inflight requests */ if (ctrl->ctrl.queue_count > 1) @@ -792,7 +792,7 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work) * queues are not a live anymore, so restart the queues to fail fast * new IO */ - blk_mq_start_stopped_hw_queues(ctrl->ctrl.admin_q, true); + blk_mq_unquiesce_queue(ctrl->ctrl.admin_q); nvme_start_queues(&ctrl->ctrl); nvme_rdma_reconnect_or_remove(ctrl); @@ -1636,9 +1636,10 @@ static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl) if (test_bit(NVME_RDMA_Q_LIVE, &ctrl->queues[0].flags)) 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_rdma_destroy_admin_queue(ctrl); } |