linux-kernel - Re: [PATCH 07/25] memremap: validate the pagemap type passed to devm_memremap

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Message-ID: <CAPcyv4jhhEbLDi82gVw7GLASEtqU=U7Ty67AGwTijmzMqw8X8Q@mail.gmail.com>
Date:   Mon, 17 Jun 2019 13:36:44 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jérôme Glisse <jglisse@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Ben Skeggs <bskeggs@...hat.com>, Linux MM <linux-mm@...ck.org>,
        nouveau@...ts.freedesktop.org,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        linux-pci@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/25] memremap: validate the pagemap type passed to devm_memremap_pages

On Mon, Jun 17, 2019 at 12:59 PM Christoph Hellwig <hch@....de> wrote:
>
> On Mon, Jun 17, 2019 at 12:02:09PM -0700, Dan Williams wrote:
> > Need a lead in patch that introduces MEMORY_DEVICE_DEVDAX, otherwise:
>
> Or maybe a MEMORY_DEVICE_DEFAULT = 0 shared by fsdax and p2pdma?

I thought about that, but it seems is_pci_p2pdma_page() needs the
distinction between the 2 types.