From: Andreas Dilger <andreas.dilger@oracle.com>
To: ngupta@vflare.org
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>,
Minchan Kim <minchan.kim@gmail.com>,
chris.mason@oracle.com, viro@zeniv.linux.org.uk,
akpm@linux-foundation.org, adilger@sun.com, tytso@mit.edu,
mfasheh@suse.com, joel.becker@oracle.com, matthew@wil.cx,
linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
ocfs2-devel@oss.oracle.com, linux-mm@kvack.org, jeremy@goop.org,
JBeulich@novell.com, kurt.hackel@oracle.com, npiggin@suse.de,
dave.mccracken@oracle.com, riel@redhat.com, avi@redhat.com,
konrad.wilk@oracle.com
Subject: Re: [PATCH V2 0/7] Cleancache (was Transcendent Memory): overview
Date: Wed, 2 Jun 2010 22:53:44 -0600 [thread overview]
Message-ID: <3721BEE2-DF2D-452A-8F01-E690E32C6B33@oracle.com> (raw)
In-Reply-To: <4C07179F.5080106@vflare.org>
On 2010-06-02, at 20:46, Nitin Gupta wrote:
> On 06/03/2010 04:32 AM, Dan Magenheimer wrote:
>>> From: Minchan Kim [mailto:minchan.kim@gmail.com]
>>=20
>>>> I am also eagerly awaiting Nitin Gupta's cleancache backend
>>>> and implementation to do in-kernel page cache compression.
>>>=20
>>> Do Nitin say he will make backend of cleancache for
>>> page cache compression?
>>>=20
>>> It would be good feature.
>>> I have a interest, too. :)
>>=20
>> That was Nitin's plan for his GSOC project when we last discussed
>> this. Nitin is on the cc list and can comment if this has
>> changed.
>=20
> Yes, I have just started work on in-kernel page cache compression
> backend for cleancache :)
Is there a design doc for this implementation? I was thinking it would =
be quite clever to do compression in, say, 64kB or 128kB chunks in a =
mapping (to get decent compression) and then write these compressed =
chunks directly from the page cache to disk in btrfs and/or a revived =
compressed ext4.
That would mean that the on-disk compression algorithm needs to match =
the in-memory algorithm, which implies that the in-memory compression =
algorithm should be selectable on a per-mapping basis.
Cheers, Andreas
--
Andreas Dilger
Lustre Technical Lead
Oracle Corporation Canada Inc.
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next prev parent reply other threads:[~2010-06-03 4:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100528173510.GA12166@ca-server1.us.oracle.com>
2010-06-02 6:03 ` [PATCH V2 0/7] Cleancache (was Transcendent Memory): overview Minchan Kim
2010-06-02 15:27 ` Dan Magenheimer
2010-06-02 16:38 ` Minchan Kim
2010-06-02 23:02 ` Dan Magenheimer
2010-06-03 2:46 ` Nitin Gupta
2010-06-03 4:53 ` Andreas Dilger [this message]
2010-06-03 6:25 ` Nitin Gupta
2010-06-03 15:43 ` Dan Magenheimer
2010-06-04 9:36 ` Nitin Gupta
2010-06-04 13:45 ` Minchan Kim
2010-06-02 13:00 ` Jamie Lokier
2010-06-02 15:35 ` Dan Magenheimer
2010-06-02 13:24 ` Christoph Hellwig
2010-06-02 16:07 ` Dan Magenheimer
2010-05-28 17:35 Dan Magenheimer
[not found] <20100528173510.GA12166@ca-server1.us.oracle.comAANLkTilV-4_QaNq5O0WSplDx1Oq7JvkgVrEiR1rgf1up@mail.gmail.com>
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