linux-kernel - Re: [PATCH v2 1/3] mm: make dev_pagemap_mapping

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Date:   Mon, 26 Nov 2018 10:32:04 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     Barret Rhoden <brho@...gle.com>
Cc:     Dave Jiang <dave.jiang@...el.com>, zwisler@...nel.org,
        Vishal L Verma <vishal.l.verma@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>, rkrcmar@...hat.com,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "H. Peter Anvin" <hpa@...or.com>, X86 ML <x86@...nel.org>,
        KVM list <kvm@...r.kernel.org>,
        "Zhang, Yu C" <yu.c.zhang@...el.com>,
        "Zhang, Yi Z" <yi.z.zhang@...el.com>,
        Linux MM <linux-mm@...ck.org>,
        David Hildenbrand <david@...hat.com>
Subject: Re: [PATCH v2 1/3] mm: make dev_pagemap_mapping_shift() externally visible

On Wed, Nov 14, 2018 at 1:53 PM Barret Rhoden <brho@...gle.com> wrote:
>
> KVM has a use case for determining the size of a dax mapping.  The KVM
> code has easy access to the address and the mm; hence the change in
> parameters.
>
> Signed-off-by: Barret Rhoden <brho@...gle.com>
> Reviewed-by: David Hildenbrand <david@...hat.com>

Acked-by: Dan Williams <dan.j.williams@...el.com>