linux-kernel - Re: [Lsf-pc] [LSF/MM TOPIC] The end of the DAX experiment

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Message-ID: <CAPcyv4gxFKBQ9eVdn+pNEzBXRfw6Qwfmu21H2i5uj-PyFmRAGQ@mail.gmail.com>
Date:   Thu, 14 Feb 2019 10:25:07 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     lsf-pc@...ts.linux-foundation.org,
        linux-xfs <linux-xfs@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-ext4 <linux-ext4@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC] The end of the DAX experiment

On Thu, Feb 14, 2019 at 5:46 AM Michal Hocko <mhocko@...nel.org> wrote:
>
> On Wed 06-02-19 13:12:59, Dan Williams wrote:
> [...]
> > * Userfaultfd for file-backed mappings and DAX
>
> I assume that other topics are meant to be FS track but this one is MM,
> right?

Yes, but I think it is the lowest priority of all the noted sub-topics
in this proposal. The DAX-reflink discussion, where a given
physical-page may need to be mapped into multiple inodes at different
offsets, might be more fruitful to have as a joint discussion with MM.