Re: [PATCH 0/4] add struct page and Direct I/O support to reserved memory

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To: Li Chen <me@linux.beauty>
Subject: Re: [PATCH 0/4] add struct page and Direct I/O support to reserved memory
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 11 Jul 2022 08:01:32 -0700
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Rob Herring <robh+dt@xxxxxxxxxx>, Frank Rowand <frowand.list@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <20220711122459.13773-1-me@linux.beauty>
References: <20220711122459.13773-1-me@linux.beauty>

Who is going to use it and how?  Because normally the reserved memory
is used through the DMA allocator, and you can't just do direct I/O
to that.

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