From: Rik van Riel <riel@redhat.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Lameter <cl@linux-foundation.org>,
Dave Chinner <david@fromorbit.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
akpm@linux-foundation.org, Miklos Szeredi <miklos@szeredi.hu>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Hugh Dickins <hugh@veritas.com>,
linux-kernel@vger.kernel.org, viro@ZenIV.linux.org.uk
Subject: Re: Slab Fragmentation Reduction V15
Date: Sat, 30 Jan 2010 09:53:32 -0500 [thread overview]
Message-ID: <4B6447EC.7030702@redhat.com> (raw)
In-Reply-To: <20100130104812.GE29555@one.firstfloor.org>
On 01/30/2010 05:48 AM, Andi Kleen wrote:
> On Fri, Jan 29, 2010 at 02:49:31PM -0600, Christoph Lameter wrote:
>> 1. Establish a reference to an dentry/inode so that it is pinned.
>> Hopefully in a way that is not too expensive (i.e. no superblock
>> lock)
>>
>> 2. A means to free a dentry/inode objects from the VM reclaim context.
>
>
> Al, do you have a suggestions on a good way to do that?
You cannot free inode objects for files that are open, mmapped, etc.
> I guess the problem could be simplified by ignoring dentries in "unusual"
> states?
You mean dentries that are in use? :)
--
All rights reversed.
next prev parent reply other threads:[~2010-01-30 14:54 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 20:49 Slab Fragmentation Reduction V15 Christoph Lameter
2010-01-29 20:49 ` slub: Add defrag_ratio field and sysfs support Christoph Lameter
2010-01-29 20:49 ` slub: Replace ctor field with ops field in /sys/slab/* Christoph Lameter
2010-01-29 20:49 ` slub: Add get() and kick() methods Christoph Lameter
2010-01-29 20:49 ` slub: Sort slab cache list and establish maximum objects for defrag slabs Christoph Lameter
2010-01-29 20:49 ` slub: Slab defrag core Christoph Lameter
2010-01-29 20:49 ` slub: Add KICKABLE to avoid repeated kick() attempts Christoph Lameter
2010-01-29 20:49 ` slub: Extend slabinfo to support -D and -F options Christoph Lameter
2010-01-29 20:49 ` slub/slabinfo: add defrag statistics Christoph Lameter
2010-01-29 20:49 ` slub: Trigger defragmentation from memory reclaim Christoph Lameter
2010-01-29 20:49 ` buffer heads: Support slab defrag Christoph Lameter
2010-01-30 1:59 ` Dave Chinner
2010-02-01 6:39 ` Nick Piggin
2010-01-29 20:49 ` inodes: Support generic defragmentation Christoph Lameter
2010-01-30 2:43 ` Dave Chinner
2010-02-01 17:50 ` Christoph Lameter
2010-01-30 19:26 ` tytso
2010-01-31 8:34 ` Andi Kleen
2010-01-31 13:59 ` Dave Chinner
2010-02-03 15:31 ` Christoph Lameter
2010-02-04 0:34 ` Dave Chinner
2010-02-04 3:07 ` tytso
2010-02-04 3:39 ` Dave Chinner
2010-02-04 9:33 ` Nick Piggin
2010-02-04 17:13 ` Christoph Lameter
2010-02-08 7:37 ` Nick Piggin
2010-02-08 17:40 ` Christoph Lameter
2010-02-08 22:13 ` Dave Chinner
2010-02-04 16:59 ` Christoph Lameter
2010-02-06 0:39 ` Dave Chinner
2010-01-31 21:02 ` tytso
2010-02-01 10:17 ` Andi Kleen
2010-02-01 13:47 ` tytso
2010-02-01 13:54 ` Andi Kleen
2010-01-29 20:49 ` Filesystem: Ext2 filesystem defrag Christoph Lameter
2010-01-29 20:49 ` Filesystem: Ext3 " Christoph Lameter
2010-01-29 20:49 ` Filesystem: Ext4 " Christoph Lameter
2010-01-29 20:49 ` Filesystem: XFS slab defragmentation Christoph Lameter
2010-01-29 20:49 ` Filesystems: /proc filesystem support for slab defrag Christoph Lameter
2010-01-29 20:49 ` dentries: dentry defragmentation Christoph Lameter
2010-01-29 22:00 ` Al Viro
2010-02-01 7:08 ` Nick Piggin
2010-02-01 10:10 ` Andi Kleen
2010-02-01 10:16 ` Nick Piggin
2010-02-01 10:22 ` Andi Kleen
2010-02-01 10:35 ` Nick Piggin
2010-02-01 10:45 ` Andi Kleen
2010-02-01 10:56 ` Nick Piggin
2010-02-01 13:25 ` Andi Kleen
2010-02-01 13:36 ` Nick Piggin
2010-01-29 20:49 ` slub defrag: Transition patch upstream -> -next Christoph Lameter
2010-01-30 8:54 ` Slab Fragmentation Reduction V15 Pekka Enberg
2010-01-30 10:48 ` Andi Kleen
2010-01-30 14:53 ` Rik van Riel [this message]
2010-02-01 17:53 ` Christoph Lameter
2010-02-01 17:52 ` Christoph Lameter
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