nvme: Move nvme_freeze/unfreeze_queues to nvme core

[karo-tx-linux.git] / drivers / nvme / host / core.c

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1437ff36e91cf479b6ab15741ed1d87501de6562..27130056136b6addf0ecd8ca5b52f245c2120ecd 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1328,6 +1328,34 @@ out:
        return ret;
 }
 
+void nvme_freeze_queues(struct nvme_ctrl *ctrl)
+{
+       struct nvme_ns *ns;
+
+       list_for_each_entry(ns, &ctrl->namespaces, list) {
+               blk_mq_freeze_queue_start(ns->queue);
+
+               spin_lock_irq(ns->queue->queue_lock);
+               queue_flag_set(QUEUE_FLAG_STOPPED, ns->queue);
+               spin_unlock_irq(ns->queue->queue_lock);
+
+               blk_mq_cancel_requeue_work(ns->queue);
+               blk_mq_stop_hw_queues(ns->queue);
+       }
+}
+
+void nvme_unfreeze_queues(struct nvme_ctrl *ctrl)
+{
+       struct nvme_ns *ns;
+
+       list_for_each_entry(ns, &ctrl->namespaces, list) {
+               queue_flag_clear_unlocked(QUEUE_FLAG_STOPPED, ns->queue);
+               blk_mq_unfreeze_queue(ns->queue);
+               blk_mq_start_stopped_hw_queues(ns->queue, true);
+               blk_mq_kick_requeue_list(ns->queue);
+       }
+}
+
 int __init nvme_core_init(void)
 {
        int result;