nvme: Move nvme_freeze/unfreeze_queues to nvme core

Nothing pci specific about them and We'll need them exported
in other transports too.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1437ff3..2713005 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;

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index d88cf45..0da6747 100644 (file)
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -237,6 +237,9 @@ int nvme_init_identify(struct nvme_ctrl *ctrl);
 void nvme_scan_namespaces(struct nvme_ctrl *ctrl);
 void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
 
+void nvme_freeze_queues(struct nvme_ctrl *ctrl);
+void nvme_unfreeze_queues(struct nvme_ctrl *ctrl);
+
 struct request *nvme_alloc_request(struct request_queue *q,
                struct nvme_command *cmd, unsigned int flags);
 void nvme_requeue_req(struct request *req);

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index b82bbea..a7e5499 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1903,34 +1903,6 @@ static void nvme_dev_list_remove(struct nvme_dev *dev)
                kthread_stop(tmp);
 }
 
-static void nvme_freeze_queues(struct nvme_dev *dev)
-{
-       struct nvme_ns *ns;
-
-       list_for_each_entry(ns, &dev->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);
-       }
-}
-
-static void nvme_unfreeze_queues(struct nvme_dev *dev)
-{
-       struct nvme_ns *ns;
-
-       list_for_each_entry(ns, &dev->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);
-       }
-}
-
 static void nvme_dev_shutdown(struct nvme_dev *dev)
 {
        int i;
@@ -1940,7 +1912,7 @@ static void nvme_dev_shutdown(struct nvme_dev *dev)
 
        mutex_lock(&dev->shutdown_lock);
        if (dev->bar) {
-               nvme_freeze_queues(dev);
+               nvme_freeze_queues(&dev->ctrl);
                csts = readl(dev->bar + NVME_REG_CSTS);
        }
        if (csts & NVME_CSTS_CFS || !(csts & NVME_CSTS_RDY)) {
@@ -2049,7 +2021,7 @@ static void nvme_reset_work(struct work_struct *work)
                dev_warn(dev->dev, "IO queues not created\n");
                nvme_remove_namespaces(&dev->ctrl);
        } else {
-               nvme_unfreeze_queues(dev);
+               nvme_unfreeze_queues(&dev->ctrl);
                nvme_dev_add(dev);
        }