From: Keith Busch <kbusch@meta.com>
To: <linux-nvme@lists.infradead.org>
Cc: <hch@lst.de>, <sagi@grimberg.me>, Keith Busch <kbusch@kernel.org>
Subject: [PATCH] nvme-multipath: set queue dma alignment to 3
Date: Mon, 24 Oct 2022 11:57:45 -0700 [thread overview]
Message-ID: <20221024185745.3164002-1-kbusch@meta.com> (raw)
From: Keith Busch <kbusch@kernel.org>
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>
---
drivers/nvme/host/multipath.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 0ea7e441e080..93e2138a8b42 100644
--- 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)
--
2.30.2
next reply other threads:[~2022-10-24 18:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-24 18:57 Keith Busch [this message]
2022-10-24 18:58 ` [PATCH] nvme-multipath: set queue dma alignment to 3 Sagi Grimberg
2022-10-25 0:49 ` Chaitanya Kulkarni
2022-10-25 15:11 ` Christoph Hellwig
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