[PATCH v4 14/16] block-dma: migrate to dma_map_phys instead of map_page
From: Leon Romanovsky <leon@kernel.org>
Date: 2025-08-19 17:38:42
Also in:
linux-block, linux-doc, linux-iommu, linux-mm, linux-nvme, linuxppc-dev, lkml, rust-for-linux, virtualization, xen-devel
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
From: Leon Romanovsky <leonro@nvidia.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@nvidia.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 ad283017caef..37e2142be4f7 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