linux-kernel - [PATCH v1 14/16] block-dma: migrate to dma_map_phys instead of map

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Message-ID: <9b8454a8a24ace186a22242e218e4f4fed103fdd.1754292567.git.leon@kernel.org>
Date: Mon,  4 Aug 2025 15:42:48 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Leon Romanovsky <leonro@...dia.com>,
	Jason Gunthorpe <jgg@...dia.com>,
	Abdiel Janulgue <abdiel.janulgue@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>,
	Danilo Krummrich <dakr@...nel.org>,
	iommu@...ts.linux.dev,
	Jason Wang <jasowang@...hat.com>,
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	Joerg Roedel <joro@...tes.org>,
	Jonathan Corbet <corbet@....net>,
	Juergen Gross <jgross@...e.com>,
	kasan-dev@...glegroups.com,
	Keith Busch <kbusch@...nel.org>,
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	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
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	Will Deacon <will@...nel.org>,
	xen-devel@...ts.xenproject.org
Subject: [PATCH v1 14/16] block-dma: migrate to dma_map_phys instead of map_page

From: Leon Romanovsky <leonro@...dia.com>

After introduction of dma_map_phys(), there is no need to convert
from physical address to struct page in order to map page. So let's
use it directly.

Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 block/blk-mq-dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-mq-dma.c b/block/blk-mq-dma.c
index ad283017caef2..37e2142be4f7d 100644
--- a/block/blk-mq-dma.c
+++ b/block/blk-mq-dma.c
@@ -87,8 +87,8 @@ static bool blk_dma_map_bus(struct blk_dma_iter *iter, struct phys_vec *vec)
 static bool blk_dma_map_direct(struct request *req, struct device *dma_dev,
 		struct blk_dma_iter *iter, struct phys_vec *vec)
 {
-	iter->addr = dma_map_page(dma_dev, phys_to_page(vec->paddr),
-			offset_in_page(vec->paddr), vec->len, rq_dma_dir(req));
+	iter->addr = dma_map_phys(dma_dev, vec->paddr, vec->len,
+			rq_dma_dir(req), 0);
 	if (dma_mapping_error(dma_dev, iter->addr)) {
 		iter->status = BLK_STS_RESOURCE;
 		return false;
-- 
2.50.1