The nvme multipathing code just dispatches bios to one of the blk-mq
based paths and never blocks on its own, so set QUEUE_FLAG_NOWAIT
to support REQ_NOWAIT bios.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
  drivers/nvme/host/multipath.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index d390f14b8bb6..c77dfe28df67 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c

@@ -480,6 +480,8 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
  			ctrl->subsys->instance, head->instance);
  
  	blk_queue_flag_set(QUEUE_FLAG_NONROT, head->disk->queue);
+	blk_queue_flag_set(QUEUE_FLAG_NOWAIT, head->disk->queue);
+
  	/* set to a default value of 512 until the disk is validated */
  	blk_queue_logical_block_size(head->disk->queue, 512);
  	blk_set_stacking_limits(&head->disk->queue->limits);