From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 3/4] dma-buf: add support for mapping with dma mapping
 attributes
Date: Mon, 21 Jan 2019 13:30:28 -0800
Message-ID: <20190121213028.GB28620@infradead.org>
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To: Liam Mark <lmark@codeaurora.org>
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On Mon, Jan 21, 2019 at 12:20:42PM -0800, Liam Mark wrote:
> I have left this to clients, but if they own the buffer they can have the 
> knowledge as to whether CPU access is needed in that use case (example for 
> post-processing).

That is an API design which the user is more likely to get wrong than
right and thus does not pass the smell test.