From: Michal Hocko <mhocko@kernel.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org,
"Darrick J. Wong" <darrick.wong@oracle.com>
Subject: Re: sharing page cache pages between multiple mappings
Date: Thu, 19 May 2016 12:53:28 +0200 [thread overview]
Message-ID: <20160519105328.GJ26110@dhcp22.suse.cz> (raw)
In-Reply-To: <CAJfpegvqPrP=AtaOSwMX1s=-oVAEE97NMwEHUkg93dBWvOykHw@mail.gmail.com>
On Thu 19-05-16 12:17:14, Miklos Szeredi wrote:
> On Thu, May 19, 2016 at 11:05 AM, Michal Hocko <mhocko@kernel.org> wrote:
> > On Thu 19-05-16 10:20:13, Miklos Szeredi wrote:
> >> Has anyone thought about sharing pages between multiple files?
> >>
> >> The obvious application is for COW filesytems where there are
> >> logically distinct files that physically share data and could easily
> >> share the cache as well if there was infrastructure for it.
> >
> > FYI this has been discussed at LSFMM this year[1]. I wasn't at the
> > session so cannot tell you any details but the LWN article covers it at
> > least briefly.
>
> Cool, so it's not such a crazy idea.
FWIW it is ;)
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-05-19 10:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-19 8:20 sharing page cache pages between multiple mappings Miklos Szeredi
2016-05-19 9:05 ` Michal Hocko
2016-05-19 10:17 ` Miklos Szeredi
2016-05-19 10:53 ` Michal Hocko [this message]
2016-05-19 23:48 ` Dave Chinner
2016-05-20 10:37 ` Miklos Szeredi
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