Re: [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers

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To: Leon Romanovsky <leon@xxxxxxxxxx>
Subject: Re: [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 22 Apr 2025 06:27:27 +0200
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Keith Busch <kbusch@xxxxxxxxxx>, Jake Edge <jake@xxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Zhu Yanjun <zyjzyj2000@xxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Sagi Grimberg <sagi@xxxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Logan Gunthorpe <logang@xxxxxxxxxxxx>, Yishai Hadas <yishaih@xxxxxxxxxx>, Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Jérôme Glisse <jglisse@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, Niklas Schnelle <schnelle@xxxxxxxxxxxxx>, Chuck Lever <chuck.lever@xxxxxxxxxx>, Luis Chamberlain <mcgrof@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Kanchan Joshi <joshi.k@xxxxxxxxxxx>, Chaitanya Kulkarni <kch@xxxxxxxxxx>, Leon Romanovsky <leonro@xxxxxxxxxx>
In-reply-to: <87b151a3791d71e58ec6f1b42bcf5fe06304cf80.1744825142.git.leon@kernel.org>
References: <cover.1744825142.git.leon@kernel.org> <87b151a3791d71e58ec6f1b42bcf5fe06304cf80.1744825142.git.leon@kernel.org>
User-agent: Mutt/1.5.17 (2007-11-01)

On Fri, Apr 18, 2025 at 09:47:50AM +0300, Leon Romanovsky wrote:
> +#define blk_phys_to_page(_paddr) \
> + 	(pfn_to_page(__phys_to_pfn(_paddr)))

The code can use phys_to_page now that that is provided kernel-wide
instead this temporary helper.

Follow-Ups:
- Re: [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers
  - From: Leon Romanovsky

References:
- [PATCH v8 00/24] Provide a new two step DMA mapping API
  - From: Leon Romanovsky
- [PATCH v8 20/24] blk-mq: add scatterlist-less DMA mapping helpers
  - From: Leon Romanovsky

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