From: Nitin Gupta <ngupta@vflare.org>
To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Greg KH <greg@kroah.com>, Rik van Riel <riel@redhat.com>,
Avi Kivity <avi@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Minchan Kim <minchan.kim@gmail.com>,
Konrad Wilk <konrad.wilk@oracle.com>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/8] zcache: page cache compression support
Date: Thu, 20 Jan 2011 07:33:29 -0500 [thread overview]
Message-ID: <4D382B99.7070005@vflare.org> (raw)
In-Reply-To: <9e7aa896-ed1f-4d50-8227-3a922be39949@default>
On 01/18/2011 12:53 PM, Dan Magenheimer wrote:
>> From: Kirill A. Shutemov [mailto:kirill@shutemov.name]
>> Sent: Monday, January 10, 2011 6:16 AM
>> To: Nitin Gupta
>> Cc: Pekka Enberg; Hugh Dickins; Andrew Morton; Greg KH; Dan
>> Magenheimer; Rik van Riel; Avi Kivity; Christoph Hellwig; Minchan Kim;
>> Konrad Rzeszutek Wilk; linux-mm; linux-kernel
>> Subject: Re: [PATCH 0/8] zcache: page cache compression support
>>
>> Hi,
>>
>> What is status of the patchset?
>> Do you have updated patchset with fixes?
>>
>> --
>> Kirill A. Shutemov
> I wanted to give Nitin a week to respond, but I guess he
> continues to be offline.
>
Sorry, I was on post-exam-vacations, so couldn't
look into it much :)
> I believe zcache is completely superceded by kztmem.
> Kztmem, like zcache, is dependent on cleancache
> getting merged.
>
> Kztmem may supercede zram also although frontswap (which
> kztmem uses for a more dynamic in-memory swap compression)
> and zram have some functional differences that support
> both being merged.
>
> For latest kztmem patches and description, see:
>
> https://lkml.org/lkml/2011/1/18/170
>
I just started looking into kztmem (weird name!) but on
the high level it seems so much similar to zcache with some
dynamic resizing added (callback for shrinker interface).
Now, I'll try rebuilding zcache according to new cleancache
API as provided by these set of patches. This will help refresh
whatever issues I was having back then with pagecache
compression and maybe pick useful bits/directions from
new kztmem work.
(PAM etc. synonyms make kztmem code reading quite heavy, and
I still don't like frontswap approach but unfortunately do not yet
have any better alternatives ready yet).
Thanks,
Nitin
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next prev parent reply other threads:[~2011-01-20 12:34 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-16 12:37 Nitin Gupta
2010-07-16 12:37 ` [PATCH 1/8] Allow sharing xvmalloc for zram and zcache Nitin Gupta
2010-07-17 18:10 ` Rik van Riel
2010-07-16 12:37 ` [PATCH 2/8] Basic zcache functionality Nitin Gupta
2010-07-18 8:14 ` Pekka Enberg
2010-07-18 9:45 ` Nitin Gupta
2010-07-18 8:27 ` Pekka Enberg
2010-07-18 8:44 ` Eric Dumazet
2010-07-18 9:51 ` Nitin Gupta
2010-07-16 12:37 ` [PATCH 3/8] Create sysfs nodes and export basic statistics Nitin Gupta
2010-07-16 12:37 ` [PATCH 4/8] Shrink zcache based on memlimit Nitin Gupta
2010-07-20 23:03 ` Minchan Kim
2010-07-21 4:52 ` Nitin Gupta
2010-07-21 11:32 ` Ed Tomlinson
2010-07-23 19:23 ` Nitin Gupta
2010-07-16 12:37 ` [PATCH 5/8] Eliminate zero-filled pages Nitin Gupta
2010-07-16 12:37 ` [PATCH 6/8] Compress pages using LZO Nitin Gupta
2010-07-16 12:37 ` [PATCH 7/8] Use xvmalloc to store compressed chunks Nitin Gupta
2010-07-18 7:53 ` Pekka Enberg
2010-07-18 8:21 ` Nitin Gupta
2010-07-19 4:36 ` Minchan Kim
2010-07-19 6:48 ` Nitin Gupta
2010-07-16 12:37 ` [PATCH 8/8] Document sysfs entries Nitin Gupta
2010-07-17 21:13 ` [PATCH 0/8] zcache: page cache compression support Ed Tomlinson
2010-07-18 2:23 ` Nitin Gupta
2010-07-18 7:50 ` Pekka Enberg
2010-07-18 8:12 ` Nitin Gupta
2010-07-19 19:57 ` Dan Magenheimer
2010-07-20 13:50 ` Nitin Gupta
2010-07-20 14:28 ` Dan Magenheimer
2010-07-21 4:27 ` Nitin Gupta
2010-07-21 17:37 ` Dan Magenheimer
2010-07-22 19:14 ` Greg KH
2010-07-22 19:54 ` Dan Magenheimer
2010-07-22 21:00 ` Greg KH
2011-01-10 13:16 ` Kirill A. Shutemov
2011-01-18 17:53 ` Dan Magenheimer
2011-01-20 12:33 ` Nitin Gupta [this message]
2011-01-20 12:47 ` Christoph Hellwig
2011-01-20 13:16 ` Pekka Enberg
2011-01-20 13:58 ` Nitin Gupta
[not found] <575348163.1113381279906498028.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com>
2010-07-23 17:36 ` caiqian
2010-07-23 17:41 ` CAI Qian
2010-07-23 18:02 ` CAI Qian
2010-07-24 14:41 ` Valdis.Kletnieks
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