linux-kernel - Re: [PATCH 15/25] device-dax: use the dev

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Message-ID: <CAPcyv4iwawKnG4jQtcNWNtXQeH3PYG6iWc6JV59DnyixmwDEcg@mail.gmail.com>
Date:   Tue, 18 Jun 2019 12:43:59 -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 15/25] device-dax: use the dev_pagemap internal refcount

On Mon, Jun 17, 2019 at 5:28 AM Christoph Hellwig <hch@....de> wrote:
>
> The functionality is identical to the one currently open coded in
> device-dax.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/dax/dax-private.h |  4 ----
>  drivers/dax/device.c      | 43 ---------------------------------------
>  2 files changed, 47 deletions(-)

This needs the mock devm_memremap_pages() to setup the common
percpu_ref. Incremental patch attached:

View attachment "0001-tools-testing-nvdimm-Support-the-internal-ref-of-dev.patch" of type "text/x-patch" (2464 bytes)