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From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 20 Apr 2017 13:47:19 -0700
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Subject: Re: [RFC 0/8] Copy Offload with Peer-to-Peer PCI Memory
To: Stephen Bates <sbates@raithlin.com>
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On Thu, Apr 20, 2017 at 1:43 PM, Stephen  Bates <sbates@raithlin.com> wrote:
>
>> Yes, this makes sense I think we really just want to distinguish host
>> memory or not in terms of the dev_pagemap type.
>
> I would like to see mutually exclusive flags for host memory (or not) and persistence (or not).
>

Why persistence? It has zero meaning to the mm.