From: Dan Williams <dan.j.williams@intel.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Jerome Glisse <jglisse@redhat.com>,
Michal Hocko <mhocko@kernel.org>,
lsf-pc@lists.linux-foundation.org,
linux-xfs <linux-xfs@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-nvdimm <linux-nvdimm@lists.01.org>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC] The end of the DAX experiment
Date: Thu, 14 Feb 2019 12:20:11 -0800 [thread overview]
Message-ID: <CAPcyv4hsDqvrV5yiDq8oWPuWb3WpuCEk_HB4qBxfiDpUwo75QQ@mail.gmail.com> (raw)
In-Reply-To: <20190214200840.GB12668@bombadil.infradead.org>
On Thu, Feb 14, 2019 at 12:09 PM Matthew Wilcox <willy@infradead.org> wrote:
>
> On Thu, Feb 14, 2019 at 11:31:24AM -0800, Dan Williams wrote:
> > On Thu, Feb 14, 2019 at 11:10 AM Jerome Glisse <jglisse@redhat.com> wrote:
> > > I am just again working on my struct page mapping patchset as well as
> > > the generic page write protection that sits on top. I hope to be able
> > > to post the v2 in couple weeks. You can always look at my posting last
> > > year to see more details.
> >
> > Yes, I have that in mind as one of the contenders. However, it's not
> > clear to me that its a suitable fit for filesystem-reflink. Others
> > have floated the 'page proxy' idea, so it would be good to discuss the
> > merits of the general approaches.
>
> ... and my preferred option of putting pfn entries in the page cache.
Another option to include the discussion.
> Or is that what you meant by "page proxy"?
Page proxy would be an object that a filesystem could allocate to
point back to a single physical 'struct page *'. The proxy would
contain an override for page->index.
next prev parent reply other threads:[~2019-02-14 20:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 21:12 [LSF/MM TOPIC] The end of the DAX experiment Dan Williams
2019-02-07 21:51 ` Kani, Toshi
2019-02-08 9:02 ` Johannes Thumshirn
2019-02-14 13:46 ` [Lsf-pc] " Michal Hocko
2019-02-14 18:25 ` Dan Williams
2019-02-14 19:10 ` Jerome Glisse
2019-02-14 19:31 ` Dan Williams
2019-02-14 20:08 ` Matthew Wilcox
2019-02-14 20:20 ` Dan Williams [this message]
2019-02-14 20:34 ` Jerome Glisse
2019-02-16 5:37 ` Dave Chinner
2019-06-05 16:22 ` Goldwyn Rodrigues
2019-06-07 6:00 ` Dan Williams
2019-12-09 16:20 ` Boaz Harrosh
2019-02-17 20:29 ` Ric Wheeler
2019-02-18 18:17 ` Dan Williams
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