unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues
quiescing/unquiescing respects the submission path rcu grace.
Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index eb729ff70e7d..df7c8a355075 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1125,7 +1125,7 @@ static int nvme_suspend_queue(struct nvme_queue *nvmeq)
spin_unlock_irq(&nvmeq->q_lock);
if (!nvmeq->qid && nvmeq->dev->ctrl.admin_q)
- blk_mq_stop_hw_queues(nvmeq->dev->ctrl.admin_q);
+ blk_mq_quiesce_queue(nvmeq->dev->ctrl.admin_q);
pci_free_irq(to_pci_dev(nvmeq->dev->dev), vector, nvmeq);
@@ -1315,7 +1315,7 @@ static void nvme_dev_remove_admin(struct nvme_dev *dev)
* user requests may be waiting on a stopped queue. Start the
* queue to flush these to completion.
*/
- blk_mq_start_stopped_hw_queues(dev->ctrl.admin_q, true);
+ blk_mq_unquiesce_queue(dev->ctrl.admin_q);
blk_cleanup_queue(dev->ctrl.admin_q);
blk_mq_free_tag_set(&dev->admin_tagset);
}
@@ -1351,8 +1351,10 @@ static int nvme_alloc_admin_tags(struct nvme_dev *dev)
dev->ctrl.admin_q = NULL;
return -ENODEV;
}
- } else
- blk_mq_start_stopped_hw_queues(dev->ctrl.admin_q, true);
+ } else {
+ blk_mq_unquiesce_queue(dev->ctrl.admin_q);
+ blk_mq_kick_requeue_list(dev->ctrl.admin_q);
+ }
return 0;
}
--
2.7.4
