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From:   Dan Williams <dan.j.williams@intel.com>
Date:   Thu, 7 Nov 2019 19:30:32 -0800
Message-ID: <CAPcyv4ivOgMNdvWTtpXw2aaR0o7MEQZ=cDiy=_P9qhVb3QVWdQ@mail.gmail.com>
Subject: Re: [RFC PATCH v2 0/7] xfs: reflink & dedupe for fsdax (read/write path).
To:     Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
Cc:     linux-xfs <linux-xfs@vger.kernel.org>,
        linux-nvdimm <linux-nvdimm@lists.01.org>,
        "Darrick J. Wong" <darrick.wong@oracle.com>,
        Goldwyn Rodrigues <rgoldwyn@suse.de>,
        Christoph Hellwig <hch@infradead.org>,
        david <david@fromorbit.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        gujx@cn.fujitsu.com, qi.fuli@fujitsu.com
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On Thu, Nov 7, 2019 at 7:11 PM Shiyang Ruan <ruansy.fnst@cn.fujitsu.com> wrote:
>
> Hi Darrick, Dave,
>
> Do you have any comment on this?

Christoph pointed out at ALPSS that this problem has significant
overlap with the shared page-cache for reflink problem. So I think we
need to solve that first and then circle back to dax reflink support.
I'm starting to take a look at that.