[PATCH 15/16] nvme-multipath: set QUEUE_FLAG_NOWAIT

Christoph Hellwig
2021-06-15T14:29:03Z

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>
Tested-by: Mark Wunderlich <mark.wunderlich@intel.com>
---
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 c1b4d627c05b..f77b774699de 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -449,6 +449,8 @@ 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);