blk-mq: add async parameter to blk_mq_start_stopped_hw_queues

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 963a821..da38088 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -700,7 +700,7 @@ void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx)
 }
 EXPORT_SYMBOL(blk_mq_start_hw_queue);
 
-void blk_mq_start_stopped_hw_queues(struct request_queue *q)
+void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async)
 {
        struct blk_mq_hw_ctx *hctx;
        int i;
@@ -711,7 +711,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q)
 
                clear_bit(BLK_MQ_S_STOPPED, &hctx->state);
                preempt_disable();
-               blk_mq_run_hw_queue(hctx, true);
+               blk_mq_run_hw_queue(hctx, async);
                preempt_enable();
        }
 }

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index f909a88..7a51f06 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -151,7 +151,7 @@ static void virtblk_done(struct virtqueue *vq)
 
        /* In case queue is stopped waiting for more buffers. */
        if (req_done)
-               blk_mq_start_stopped_hw_queues(vblk->disk->queue);
+               blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
 }
 
 static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req)
@@ -762,7 +762,7 @@ static int virtblk_restore(struct virtio_device *vdev)
        vblk->config_enable = true;
        ret = init_vq(vdev->priv);
        if (!ret)
-               blk_mq_start_stopped_hw_queues(vblk->disk->queue);
+               blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
 
        return ret;
 }

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index a81b474..9ecfab9 100644 (file)
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -157,7 +157,7 @@ void blk_mq_complete_request(struct request *rq);
 void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx);
 void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx);
 void blk_mq_stop_hw_queues(struct request_queue *q);
-void blk_mq_start_stopped_hw_queues(struct request_queue *q);
+void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
 
 /*
  * Driver command data is immediately after the request. So subtract request