Re: [PATCH 2/6] dma-direct: use __GFP_ZERO in dma_direct_alloc_pages

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To: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Subject: Re: [PATCH 2/6] dma-direct: use __GFP_ZERO in dma_direct_alloc_pages
From: Christoph Hellwig <hch@xxxxxx>
Date: Mon, 30 Nov 2020 09:27:46 +0100
Cc: Christoph Hellwig <hch@xxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, IOMMU DRIVERS <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Linux Doc Mailing List <linux-doc@xxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Linux Media Mailing List <linux-media@xxxxxxxxxxxxxxx>, Tomasz Figa <tfiga@xxxxxxxxxxxx>, Sergey Senozhatsky <senozhatsky@xxxxxxxxxx>
In-reply-to: <20201124153845.132207-2-ribalda@chromium.org>
References: <20201124153845.132207-1-ribalda@chromium.org> <20201124153845.132207-2-ribalda@chromium.org>
User-agent: Mutt/1.5.17 (2007-11-01)

On Tue, Nov 24, 2020 at 04:38:41PM +0100, Ricardo Ribalda wrote:
> From: Christoph Hellwig <hch@xxxxxx>
> 
> Prepare for supporting the DMA_ATTR_NO_KERNEL_MAPPING flag in
> dma_alloc_pages.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

FYI, this patch should be dropped as I've implemented the functionality
differently.

References:
- [PATCH 1/6] dma-mapping: remove the {alloc,free}_noncoherent methods
  - From: Ricardo Ribalda
- [PATCH 2/6] dma-direct: use __GFP_ZERO in dma_direct_alloc_pages
  - From: Ricardo Ribalda

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