nvme-multipath: set queue dma alignment to 3

NVMe spec requires all transports support dword aligned addresses, which
is already set in the namespace request_queue. Set the same limit in the
multipath device's request_queue as well.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 0ea7e44..93e2138 100644 (file)
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -516,6 +516,7 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
        /* 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);
+       blk_queue_dma_alignment(head->disk->queue, 3);
 
        /* we need to propagate up the VMC settings */
        if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)