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From: Jack Steiner <steiner@sgi.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Robin Holt <holt@sgi.com>,
	Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
	Nick Piggin <npiggin@suse.de>,
	kvm-devel@lists.sourceforge.net,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	daniel.blueman@quadrics.com, Hugh Dickins <hugh@veritas.com>
Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges
Date: Wed, 30 Jan 2008 14:29:18 -0600	[thread overview]
Message-ID: <20080130202918.GB11324@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801301140320.30568@schroedinger.engr.sgi.com>

On Wed, Jan 30, 2008 at 11:41:29AM -0800, Christoph Lameter wrote:
> On Wed, 30 Jan 2008, Jack Steiner wrote:
> 
> > I see what you mean. I need to review to mail to see why this changed
> > but in the original discussions with Christoph, the invalidate_range
> > callouts were suppose to be made BEFORE the pages were put on the freelist.
> 
> Seems that we cannot rely on the invalidate_ranges for correctness at all?
> We need to have invalidate_page() always. invalidate_range() is only an 
> optimization.
> 

I don't understand your point "an optimization". How would invalidate_range
as currently defined be correctly used?

It _looks_ like it would work only if xpmem/gru/etc takes a refcnt on
the page & drops it when invalidate_range is called. That may work (not sure)
for xpmem but not for the GRU.

--- jack


WARNING: multiple messages have this Message-ID (diff)
From: Jack Steiner <steiner-sJ/iWh9BUns@public.gmane.org>
To: Christoph Lameter <clameter-sJ/iWh9BUns@public.gmane.org>
Cc: Nick Piggin <npiggin-l3A5Bk7waGM@public.gmane.org>,
	Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
	Peter Zijlstra
	<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	Benjamin Herrenschmidt
	<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
	kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org,
	Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>,
	Hugh Dickins <hugh-DTz5qymZ9yRBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges
Date: Wed, 30 Jan 2008 14:29:18 -0600	[thread overview]
Message-ID: <20080130202918.GB11324@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801301140320.30568-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>

On Wed, Jan 30, 2008 at 11:41:29AM -0800, Christoph Lameter wrote:
> On Wed, 30 Jan 2008, Jack Steiner wrote:
> 
> > I see what you mean. I need to review to mail to see why this changed
> > but in the original discussions with Christoph, the invalidate_range
> > callouts were suppose to be made BEFORE the pages were put on the freelist.
> 
> Seems that we cannot rely on the invalidate_ranges for correctness at all?
> We need to have invalidate_page() always. invalidate_range() is only an 
> optimization.
> 

I don't understand your point "an optimization". How would invalidate_range
as currently defined be correctly used?

It _looks_ like it would work only if xpmem/gru/etc takes a refcnt on
the page & drops it when invalidate_range is called. That may work (not sure)
for xpmem but not for the GRU.

--- jack


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WARNING: multiple messages have this Message-ID (diff)
From: Jack Steiner <steiner@sgi.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Robin Holt <holt@sgi.com>,
	Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
	Nick Piggin <npiggin@suse.de>,
	kvm-devel@lists.sourceforge.net,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	daniel.blueman@quadrics.com, Hugh Dickins <hugh@veritas.com>
Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges
Date: Wed, 30 Jan 2008 14:29:18 -0600	[thread overview]
Message-ID: <20080130202918.GB11324@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801301140320.30568@schroedinger.engr.sgi.com>

On Wed, Jan 30, 2008 at 11:41:29AM -0800, Christoph Lameter wrote:
> On Wed, 30 Jan 2008, Jack Steiner wrote:
> 
> > I see what you mean. I need to review to mail to see why this changed
> > but in the original discussions with Christoph, the invalidate_range
> > callouts were suppose to be made BEFORE the pages were put on the freelist.
> 
> Seems that we cannot rely on the invalidate_ranges for correctness at all?
> We need to have invalidate_page() always. invalidate_range() is only an 
> optimization.
> 

I don't understand your point "an optimization". How would invalidate_range
as currently defined be correctly used?

It _looks_ like it would work only if xpmem/gru/etc takes a refcnt on
the page & drops it when invalidate_range is called. That may work (not sure)
for xpmem but not for the GRU.

--- jack

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  reply	other threads:[~2008-01-30 20:29 UTC|newest]

Thread overview: 304+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-28 20:28 [patch 0/6] [RFC] MMU Notifiers V2 Christoph Lameter
2008-01-28 20:28 ` Christoph Lameter
2008-01-28 20:28 ` [patch 1/6] mmu_notifier: Core code Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-28 22:06   ` Christoph Lameter
2008-01-28 22:06     ` Christoph Lameter
2008-01-28 22:06     ` Christoph Lameter
2008-01-29  0:05   ` Robin Holt
2008-01-29  0:05     ` Robin Holt
2008-01-29  0:05     ` Robin Holt
2008-01-29  1:19     ` Christoph Lameter
2008-01-29  1:19       ` Christoph Lameter
2008-01-29  1:19       ` Christoph Lameter
2008-01-29 13:59   ` Andrea Arcangeli
2008-01-29 13:59     ` Andrea Arcangeli
2008-01-29 13:59     ` Andrea Arcangeli
2008-01-29 14:34     ` Andrea Arcangeli
2008-01-29 14:34       ` Andrea Arcangeli
2008-01-29 14:34       ` Andrea Arcangeli
2008-01-29 19:49     ` Christoph Lameter
2008-01-29 19:49       ` Christoph Lameter
2008-01-29 19:49       ` Christoph Lameter
2008-01-29 20:41       ` Avi Kivity
2008-01-29 20:41         ` Avi Kivity
2008-01-29 20:41         ` Avi Kivity
2008-01-29 16:07   ` Robin Holt
2008-01-29 16:07     ` Robin Holt
2008-01-29 16:07     ` Robin Holt
2008-02-05 18:05   ` Andy Whitcroft
2008-02-05 18:05     ` Andy Whitcroft
2008-02-05 18:05     ` Andy Whitcroft
2008-02-05 18:17     ` Peter Zijlstra
2008-02-05 18:17       ` Peter Zijlstra
2008-02-05 18:19     ` Christoph Lameter
2008-02-05 18:19       ` Christoph Lameter
2008-02-05 18:19       ` Christoph Lameter
2008-01-28 20:28 ` [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-29 16:20   ` Andrea Arcangeli
2008-01-29 16:20     ` Andrea Arcangeli
2008-01-29 16:20     ` Andrea Arcangeli
2008-01-29 18:28     ` Andrea Arcangeli
2008-01-29 18:28       ` Andrea Arcangeli
2008-01-29 18:28       ` Andrea Arcangeli
2008-01-29 20:30       ` Christoph Lameter
2008-01-29 20:30         ` Christoph Lameter
2008-01-29 20:30         ` Christoph Lameter
2008-01-29 21:36         ` Andrea Arcangeli
2008-01-29 21:36           ` Andrea Arcangeli
2008-01-29 21:36           ` Andrea Arcangeli
2008-01-29 21:53           ` Christoph Lameter
2008-01-29 21:53             ` Christoph Lameter
2008-01-29 21:53             ` Christoph Lameter
2008-01-29 22:35             ` Andrea Arcangeli
2008-01-29 22:35               ` Andrea Arcangeli
2008-01-29 22:35               ` Andrea Arcangeli
2008-01-29 22:55               ` Christoph Lameter
2008-01-29 22:55                 ` Christoph Lameter
2008-01-29 22:55                 ` Christoph Lameter
2008-01-29 23:43                 ` Andrea Arcangeli
2008-01-29 23:43                   ` Andrea Arcangeli
2008-01-29 23:43                   ` Andrea Arcangeli
2008-01-30  0:34                   ` Christoph Lameter
2008-01-30  0:34                     ` Christoph Lameter
2008-01-30  0:34                     ` Christoph Lameter
2008-01-29 19:55     ` Christoph Lameter
2008-01-29 19:55       ` Christoph Lameter
2008-01-29 19:55       ` Christoph Lameter
2008-01-29 21:17       ` Andrea Arcangeli
2008-01-29 21:17         ` Andrea Arcangeli
2008-01-29 21:35         ` Christoph Lameter
2008-01-29 21:35           ` Christoph Lameter
2008-01-29 21:35           ` Christoph Lameter
2008-01-29 22:02           ` Andrea Arcangeli
2008-01-29 22:02             ` Andrea Arcangeli
2008-01-29 22:02             ` Andrea Arcangeli
2008-01-29 22:39             ` Christoph Lameter
2008-01-29 22:39               ` Christoph Lameter
2008-01-29 22:39               ` Christoph Lameter
2008-01-30  0:00               ` Andrea Arcangeli
2008-01-30  0:00                 ` Andrea Arcangeli
2008-01-30  0:00                 ` Andrea Arcangeli
2008-01-30  0:05                 ` Andrea Arcangeli
2008-01-30  0:05                   ` Andrea Arcangeli
2008-01-30  0:05                   ` Andrea Arcangeli
2008-01-30  0:22                   ` Christoph Lameter
2008-01-30  0:22                     ` Christoph Lameter
2008-01-30  0:22                     ` Christoph Lameter
2008-01-30  0:59                     ` Andrea Arcangeli
2008-01-30  0:59                       ` Andrea Arcangeli
2008-01-30  0:59                       ` Andrea Arcangeli
2008-01-30  8:26                       ` Peter Zijlstra
2008-01-30  8:26                         ` Peter Zijlstra
2008-01-30  0:20                 ` Christoph Lameter
2008-01-30  0:20                   ` Christoph Lameter
2008-01-30  0:20                   ` Christoph Lameter
2008-01-30  0:28                   ` Jack Steiner
2008-01-30  0:28                     ` Jack Steiner
2008-01-30  0:28                     ` Jack Steiner
2008-01-30  0:35                     ` Christoph Lameter
2008-01-30  0:35                       ` Christoph Lameter
2008-01-30  0:35                       ` Christoph Lameter
2008-01-30 13:37                     ` Andrea Arcangeli
2008-01-30 13:37                       ` Andrea Arcangeli
2008-01-30 13:37                       ` Andrea Arcangeli
2008-01-30 14:43                       ` Jack Steiner
2008-01-30 14:43                         ` Jack Steiner
2008-01-30 14:43                         ` Jack Steiner
2008-01-30 19:41                         ` Christoph Lameter
2008-01-30 19:41                           ` Christoph Lameter
2008-01-30 19:41                           ` Christoph Lameter
2008-01-30 20:29                           ` Jack Steiner [this message]
2008-01-30 20:29                             ` Jack Steiner
2008-01-30 20:29                             ` Jack Steiner
2008-01-30 20:55                             ` Christoph Lameter
2008-01-30 20:55                               ` Christoph Lameter
2008-01-30 20:55                               ` Christoph Lameter
2008-01-30 16:11                 ` Robin Holt
2008-01-30 16:11                   ` Robin Holt
2008-01-30 16:11                   ` Robin Holt
2008-01-30 17:04                   ` Andrea Arcangeli
2008-01-30 17:04                     ` Andrea Arcangeli
2008-01-30 17:04                     ` Andrea Arcangeli
2008-01-30 17:30                     ` Robin Holt
2008-01-30 17:30                       ` Robin Holt
2008-01-30 17:30                       ` Robin Holt
2008-01-30 18:25                       ` Andrea Arcangeli
2008-01-30 18:25                         ` Andrea Arcangeli
2008-01-30 18:25                         ` Andrea Arcangeli
2008-01-30 19:50                         ` Christoph Lameter
2008-01-30 19:50                           ` Christoph Lameter
2008-01-30 19:50                           ` Christoph Lameter
2008-01-30 22:18                           ` Robin Holt
2008-01-30 22:18                             ` Robin Holt
2008-01-30 22:18                             ` Robin Holt
2008-01-30 23:52                           ` Andrea Arcangeli
2008-01-30 23:52                             ` Andrea Arcangeli
2008-01-31  0:01                             ` Christoph Lameter
2008-01-31  0:01                               ` Christoph Lameter
2008-01-31  0:01                               ` Christoph Lameter
2008-01-31  0:34                               ` [kvm-devel] " Andrea Arcangeli
2008-01-31  0:34                                 ` Andrea Arcangeli
2008-01-31  0:34                                 ` Andrea Arcangeli
2008-01-31  1:46                                 ` [kvm-devel] " Christoph Lameter
2008-01-31  1:46                                   ` Christoph Lameter
2008-01-31  1:46                                   ` Christoph Lameter
2008-01-31  2:34                                   ` [kvm-devel] " Robin Holt
2008-01-31  2:34                                     ` Robin Holt
2008-01-31  2:34                                     ` Robin Holt
2008-01-31  2:37                                     ` [kvm-devel] " Christoph Lameter
2008-01-31  2:37                                       ` Christoph Lameter
2008-01-31  2:37                                       ` Christoph Lameter
2008-01-31  2:56                                     ` [kvm-devel] mmu_notifier: invalidate_range_start with lock=1 Christoph Lameter
2008-01-31  2:56                                       ` Christoph Lameter
2008-01-31  2:56                                       ` Christoph Lameter
2008-01-31 10:52                                   ` [kvm-devel] [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Andrea Arcangeli
2008-01-31 10:52                                     ` Andrea Arcangeli
2008-01-31 10:52                                     ` Andrea Arcangeli
2008-01-31  2:08                                 ` [kvm-devel] " Christoph Lameter
2008-01-31  2:08                                   ` Christoph Lameter
2008-01-31  2:08                                   ` Christoph Lameter
2008-01-31  2:42                                   ` [kvm-devel] " Andrea Arcangeli
2008-01-31  2:42                                     ` Andrea Arcangeli
2008-01-31  2:42                                     ` Andrea Arcangeli
2008-01-31  2:51                                     ` [kvm-devel] " Christoph Lameter
2008-01-31  2:51                                       ` Christoph Lameter
2008-01-31  2:51                                       ` Christoph Lameter
2008-01-31 13:39                                       ` [kvm-devel] " Andrea Arcangeli
2008-01-31 13:39                                         ` Andrea Arcangeli
2008-01-31 13:39                                         ` Andrea Arcangeli
2008-01-30 19:35                   ` Christoph Lameter
2008-01-30 19:35                     ` Christoph Lameter
2008-01-30 19:35                     ` Christoph Lameter
2008-01-28 20:28 ` [patch 3/6] mmu_notifier: invalidate_page callbacks for subsystems with rmap Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-29 16:28   ` Robin Holt
2008-01-29 16:28     ` Robin Holt
2008-01-28 20:28 ` [patch 4/6] MMU notifier: invalidate_page callbacks using Linux rmaps Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-29 14:03   ` Andrea Arcangeli
2008-01-29 14:03     ` Andrea Arcangeli
2008-01-29 14:03     ` Andrea Arcangeli
2008-01-29 14:24     ` Andrea Arcangeli
2008-01-29 14:24       ` Andrea Arcangeli
2008-01-29 14:24       ` Andrea Arcangeli
2008-01-29 19:51       ` Christoph Lameter
2008-01-29 19:51         ` Christoph Lameter
2008-01-29 19:51         ` Christoph Lameter
2008-01-28 20:28 ` [patch 5/6] mmu_notifier: Callbacks for xip_filemap.c Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-28 20:28 ` [patch 6/6] mmu_notifier: Add invalidate_all() Christoph Lameter
2008-01-28 20:28   ` Christoph Lameter
2008-01-29 16:31   ` Robin Holt
2008-01-29 16:31     ` Robin Holt
2008-01-29 20:02     ` Christoph Lameter
2008-01-29 20:02       ` Christoph Lameter
2008-01-29 20:02       ` Christoph Lameter
  -- strict thread matches above, loose matches on Subject: below --
2008-01-30  2:29 [patch 0/6] [RFC] MMU Notifiers V3 Christoph Lameter
2008-01-30  2:29 ` [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-01-30  2:29   ` Christoph Lameter
2008-02-08 22:06 [patch 0/6] MMU Notifiers V6 Christoph Lameter
2008-02-08 22:06 ` [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-02-08 22:06   ` Christoph Lameter
2008-02-15  6:48 [patch 0/6] MMU Notifiers V7 Christoph Lameter
2008-02-15  6:49 ` [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-02-15  6:49   ` Christoph Lameter
2008-02-16  3:37   ` Andrew Morton
2008-02-16  3:37     ` Andrew Morton
2008-02-16 19:26     ` Christoph Lameter
2008-02-16 19:26       ` Christoph Lameter
2008-02-19  8:54   ` Nick Piggin
2008-02-19  8:54     ` Nick Piggin
2008-02-19 13:34     ` Andrea Arcangeli
2008-02-19 13:34       ` Andrea Arcangeli
2008-02-19 13:34       ` Andrea Arcangeli
2008-02-27 22:23       ` Christoph Lameter
2008-02-27 22:23         ` Christoph Lameter
2008-02-27 22:23         ` Christoph Lameter
2008-02-27 23:57         ` Andrea Arcangeli
2008-02-27 23:57           ` Andrea Arcangeli
2008-02-27 23:57           ` Andrea Arcangeli
2008-02-19 23:08   ` Nick Piggin
2008-02-19 23:08     ` Nick Piggin
2008-02-20  1:00     ` Andrea Arcangeli
2008-02-20  1:00       ` Andrea Arcangeli
2008-02-20  1:00       ` Andrea Arcangeli
2008-02-20  3:00       ` Robin Holt
2008-02-20  3:00         ` Robin Holt
2008-02-20  3:00         ` Robin Holt
2008-02-20  3:11         ` Nick Piggin
2008-02-20  3:11           ` Nick Piggin
2008-02-20  3:11           ` Nick Piggin
2008-02-20  3:19           ` Robin Holt
2008-02-20  3:19             ` Robin Holt
2008-02-27 22:39       ` Christoph Lameter
2008-02-27 22:39         ` Christoph Lameter
2008-02-27 22:39         ` Christoph Lameter
2008-02-28  0:38         ` Andrea Arcangeli
2008-02-28  0:38           ` Andrea Arcangeli
2008-02-28  0:38           ` Andrea Arcangeli
2008-02-27 22:35     ` Christoph Lameter
2008-02-27 22:35       ` Christoph Lameter
2008-02-27 22:42       ` Jack Steiner
2008-02-27 22:42         ` Jack Steiner
2008-02-28  0:10       ` Christoph Lameter
2008-02-28  0:10         ` Christoph Lameter
2008-02-28  0:10         ` Christoph Lameter
2008-02-28  0:11       ` Andrea Arcangeli
2008-02-28  0:11         ` Andrea Arcangeli
2008-02-28  0:14         ` Christoph Lameter
2008-02-28  0:14           ` Christoph Lameter
2008-02-28  0:14           ` Christoph Lameter
2008-02-28  0:52           ` Andrea Arcangeli
2008-02-28  0:52             ` Andrea Arcangeli
2008-02-28  1:03             ` Christoph Lameter
2008-02-28  1:03               ` Christoph Lameter
2008-02-28  1:03               ` Christoph Lameter
2008-02-28  1:10               ` Andrea Arcangeli
2008-02-28  1:10                 ` Andrea Arcangeli
2008-02-28  1:10                 ` Andrea Arcangeli
2008-02-28 18:43                 ` Christoph Lameter
2008-02-28 18:43                   ` Christoph Lameter
2008-02-29  0:55                   ` Andrea Arcangeli
2008-02-29  0:55                     ` Andrea Arcangeli
2008-02-29  0:55                     ` Andrea Arcangeli
2008-02-29  0:59                     ` Christoph Lameter
2008-02-29  0:59                       ` Christoph Lameter
2008-02-29 13:13                       ` Andrea Arcangeli
2008-02-29 13:13                         ` Andrea Arcangeli
2008-02-29 13:13                         ` Andrea Arcangeli
2008-02-29 19:55                         ` Christoph Lameter
2008-02-29 19:55                           ` Christoph Lameter
2008-02-29 20:17                           ` Andrea Arcangeli
2008-02-29 20:17                             ` Andrea Arcangeli
2008-02-29 20:17                             ` Andrea Arcangeli
2008-02-29 21:03                             ` Christoph Lameter
2008-02-29 21:03                               ` Christoph Lameter
2008-02-29 21:23                               ` Andrea Arcangeli
2008-02-29 21:23                                 ` Andrea Arcangeli
2008-02-29 21:23                                 ` Andrea Arcangeli
2008-02-29 21:29                                 ` Christoph Lameter
2008-02-29 21:29                                   ` Christoph Lameter
2008-02-29 21:29                                   ` Christoph Lameter
2008-02-29 21:34                                 ` Christoph Lameter
2008-02-29 21:34                                   ` Christoph Lameter
2008-02-29 21:34                                   ` Christoph Lameter
2008-02-29 21:48                                   ` Andrea Arcangeli
2008-02-29 21:48                                     ` Andrea Arcangeli
2008-02-29 22:12                                     ` Christoph Lameter
2008-02-29 22:12                                       ` Christoph Lameter
2008-02-29 22:12                                       ` Christoph Lameter
2008-02-29 22:41                                       ` Andrea Arcangeli
2008-02-29 22:41                                         ` Andrea Arcangeli
2008-02-28 10:53             ` Robin Holt
2008-02-28 10:53               ` Robin Holt
2008-03-03  5:11       ` Nick Piggin
2008-03-03  5:11         ` Nick Piggin
2008-03-03  5:11         ` Nick Piggin
2008-03-03 19:28         ` Christoph Lameter
2008-03-03 19:28           ` Christoph Lameter
2008-03-03 19:50           ` Nick Piggin
2008-03-03 19:50             ` Nick Piggin
2008-03-04 18:58             ` Christoph Lameter
2008-03-04 18:58               ` Christoph Lameter
2008-03-04 18:58               ` Christoph Lameter
2008-03-05  0:52               ` Nick Piggin
2008-03-05  0:52                 ` Nick Piggin

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