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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	paulmck@linux.vnet.ibm.com, Gregory Haskins <ghaskins@novell.com>,
	Ingo Molnar <mingo@elte.hu>, Matthew Wilcox <matthew@wil.cx>,
	Andi Kleen <andi@firstfloor.org>,
	Chris Mason <chris.mason@oracle.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-btrfs <linux-btrfs@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Nick Piggin <npiggin@suse.de>,
	Peter Morreale <pmorreale@novell.com>,
	Sven Dietrich <SDietrich@novell.com>
Subject: Re: [PATCH -v5][RFC]: mutex: implement adaptive spinning
Date: Wed, 7 Jan 2009 14:06:40 -0800 (PST)	[thread overview]
Message-ID: <alpine.LFD.2.00.0901071401380.3057@localhost.localdomain> (raw)
In-Reply-To: <alpine.LFD.2.00.0901071355350.3057@localhost.localdomain>



On Wed, 7 Jan 2009, Linus Torvalds wrote:
> 
> We don't actually care that it only happens once: this all has _known_ 
> races, and the "cpu_relax()" is a barrier.

I phrased that badly. It's not that it has "known races", it's really that 
the whole code sequence is very much written and intended to be 
optimistic.

So whatever code motion or whatever CPU memory ordering motion that 
happens, we don't really care, because none of the tests are final. We do 
need to make sure that the compiler doesn't optimize the loads out of the 
loops _entirely_, but the "cpu_relax()" things that we need for other 
reasons guarantee that part.

One related issue: since we avoid the spinlock, we now suddenly end up 
relying on the "atomic_cmpxchg()" having lock acquire memory ordering 
semantics. Because _that_ is the one non-speculative thing we do end up 
doing in the whole loop. 

But atomic_cmpxchg() is currently defined to be a full memory barrier, so 
we should be ok. The only issue might be that it's _too_ much of a memory 
barrier for some architectures, but this is not the pure fastpath, so I 
think we're all good.

			Linus

  reply	other threads:[~2009-01-07 22:06 UTC|newest]

Thread overview: 362+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-31 11:28 Btrfs for mainline Chris Mason
2008-12-31 18:45 ` Andrew Morton
2008-12-31 23:19   ` Chris Mason
2009-01-02 16:37     ` Ryusuke Konishi
2009-01-02 18:06       ` Chris Mason
2009-01-02 19:38       ` Chris Mason
2009-01-03  9:44         ` Ryusuke Konishi
2009-01-05 14:14           ` Chris Mason
2009-01-05 16:43             ` Ryusuke Konishi
2009-01-05 10:32         ` Nick Piggin
2009-01-05 13:21           ` Chris Mason
2009-01-05 14:39             ` generic pagecache to block mapping layer (was Re: Btrfs for mainline) Nick Piggin
2009-01-05 16:37               ` Chris Mason
2009-01-05 17:10                 ` Nick Piggin
2009-01-06 17:20                   ` Nick Piggin
2009-01-02 19:05     ` Btrfs for mainline Andi Kleen
2009-01-02 19:32       ` Chris Mason
2009-01-02 21:01         ` Andi Kleen
2009-01-02 21:35           ` Chris Mason
2009-01-02 22:26             ` Roland Dreier
2009-01-04 13:28               ` KOSAKI Motohiro
2009-01-04 15:56                 ` Ed Tomlinson
2009-01-05 10:07           ` Chris Samuel
2009-01-05 13:18             ` Chris Mason
2009-01-05 16:33               ` J. Bruce Fields
2009-01-06 22:09                 ` Jamie Lokier
2009-01-03 19:17       ` Matthew Wilcox
2009-01-03 19:50         ` Christoph Hellwig
2009-01-03 20:17           ` Chris Mason
2009-01-04 21:52             ` Arnd Bergmann
2009-01-05 14:01               ` Chris Mason
2009-01-03 21:12           ` Matthew Wilcox
2009-01-04 18:21         ` Peter Zijlstra
2009-01-04 18:41           ` Matthew Wilcox
2009-01-05 14:47             ` Nick Piggin
2009-01-05 16:23               ` Matthew Wilcox
2009-01-05 16:30               ` Chris Mason
2009-01-07 13:07                 ` Ingo Molnar
2009-01-07 13:24                   ` Matthew Wilcox
2009-01-07 14:56                     ` Ingo Molnar
2009-01-06 11:40             ` [PATCH][RFC]: mutex: adaptive spin Peter Zijlstra
2009-01-06 12:10               ` Ingo Molnar
2009-01-06 12:21                 ` Peter Zijlstra
2009-01-06 15:01                   ` Matthew Wilcox
2009-01-06 13:10                 ` Gregory Haskins
2009-01-06 13:16                   ` Ingo Molnar
2009-01-06 13:20                     ` Peter Zijlstra
2009-01-06 14:15                       ` Gregory Haskins
2009-01-06 21:42                         ` Paul E. McKenney
2009-01-06 21:44                           ` Peter Zijlstra
2009-01-06 21:50                             ` Linus Torvalds
2009-01-06 22:07                               ` Peter Zijlstra
2009-01-06 22:22                                 ` Linus Torvalds
2009-01-06 22:43                                   ` Peter Zijlstra
2009-01-06 22:56                                     ` Linus Torvalds
2009-01-06 23:00                                     ` Linus Torvalds
2009-01-06 23:09                                       ` Matthew Wilcox
2009-01-07  0:06                                         ` Linus Torvalds
2009-01-06 23:16                                     ` Peter Zijlstra
2009-01-07 12:03                                       ` [PATCH -v4][RFC]: mutex: implement adaptive spinning Peter Zijlstra
2009-01-07 14:50                                         ` Frédéric Weisbecker
2009-01-07 14:58                                           ` Peter Zijlstra
2009-01-07 15:22                                         ` Steven Rostedt
2009-01-07 15:29                                           ` Steven Rostedt
2009-01-07 15:54                                           ` Peter Zijlstra
2009-01-07 16:25                                         ` Linus Torvalds
2009-01-07 16:57                                           ` [PATCH -v5][RFC]: " Peter Zijlstra
2009-01-07 18:55                                             ` Linus Torvalds
2009-01-07 20:40                                               ` Steven Rostedt
2009-01-07 20:55                                                 ` Linus Torvalds
2009-01-07 21:09                                                   ` Matthew Wilcox
2009-01-07 21:24                                                     ` Linus Torvalds
2009-01-07 21:32                                                       ` Ingo Molnar
2009-01-07 21:47                                                         ` Andrew Morton
2009-01-07 21:57                                                           ` Ingo Molnar
2009-01-07 21:39                                                       ` Linus Torvalds
2009-01-07 21:39                                                     ` Andi Kleen
2009-01-07 22:28                                                       ` Gregory Haskins
2009-01-07 22:33                                                         ` Ingo Molnar
2009-01-07 22:51                                                           ` Peter W. Morreale
2009-01-07 23:14                                                             ` Peter W. Morreale
2009-01-07 22:56                                                           ` Gregory Haskins
2009-01-07 23:09                                                             ` Steven Rostedt
2009-01-07 23:32                                                               ` Linus Torvalds
2009-01-07 23:46                                                                 ` Steven Rostedt
2009-01-07 23:47                                                                   ` Steven Rostedt
2009-01-07 23:52                                                                     ` Linus Torvalds
2009-01-08  3:28                                                                 ` Gregory Haskins
2009-01-08  7:10                                                                 ` Peter Zijlstra
2009-01-07 23:15                                                         ` Linus Torvalds
2009-01-07 23:18                                                           ` Linus Torvalds
2009-01-08  3:27                                                             ` Gregory Haskins
2009-01-08  3:38                                                               ` Steven Rostedt
2009-01-08  4:00                                                                 ` Gregory Haskins
2009-01-07 23:23                                                         ` Paul E. McKenney
2009-01-07 21:28                                                   ` Ingo Molnar
2009-01-07 21:51                                                   ` Peter Zijlstra
2009-01-07 21:58                                                     ` Linus Torvalds
2009-01-07 22:06                                                       ` Linus Torvalds [this message]
2009-01-07 22:18                                                       ` Peter Zijlstra
2009-01-07 23:10                                                         ` Linus Torvalds
2009-01-08  9:58                                                           ` [PATCH -v6][RFC]: " Peter Zijlstra
2009-01-08 14:18                                                             ` Ingo Molnar
2009-01-08 14:33                                                               ` Gregory Haskins
2009-01-08 14:46                                                               ` [PATCH -v7][RFC]: " Peter Zijlstra
2009-01-08 15:09                                                                 ` Steven Rostedt
2009-01-08 15:23                                                                   ` Peter Zijlstra
2009-01-08 15:28                                                                     ` Steven Rostedt
2009-01-08 15:30                                                                       ` Peter Zijlstra
2009-01-08 15:30                                                                       ` Steven Rostedt
2009-01-08 16:11                                                                 ` Linus Torvalds
2009-01-08 16:58                                                                 ` Linus Torvalds
2009-01-08 17:08                                                                   ` Chris Mason
2009-01-08 17:33                                                                     ` Steven Rostedt
2009-01-08 17:52                                                                       ` Linus Torvalds
2009-01-08 18:03                                                                         ` Steven Rostedt
     [not found]                                                                         ` <alpine.DEB.1.10.0901081300370.24688@gandalf.stny.rr.com>
2009-01-08 18:14                                                                           ` Steven Rostedt
2009-01-08 19:17                                                                             ` Chris Mason
2009-01-08 19:45                                                                               ` Steven Rostedt
2009-01-08 18:16                                                                           ` Linus Torvalds
2009-01-08 18:27                                                                             ` Chris Mason
2009-01-08 19:02                                                                               ` Chris Mason
2009-01-08 19:13                                                                                 ` Linus Torvalds
2009-01-08 19:23                                                                                   ` Peter Zijlstra
2009-01-09 17:40                                                                                     ` Jiri Kosina
2009-01-09  9:28                                                                                   ` Peter Zijlstra
2009-01-10 23:59                                                                                   ` Jeremy Fitzhardinge
2009-01-08 19:54                                                                                 ` Linus Torvalds
2009-01-08 20:12                                                                                   ` Steven Rostedt
2009-01-09 10:47                                                                                   ` Peter Zijlstra
2009-01-09 15:06                                                                                     ` Peter Zijlstra
2009-01-09 15:11                                                                                       ` Chris Mason
2009-01-09 15:59                                                                                       ` Steven Rostedt
2009-01-09 16:03                                                                                         ` Peter Zijlstra
2009-01-09 16:34                                                                                         ` Linus Torvalds
2009-01-09 16:44                                                                                           ` Steven Rostedt
2009-01-09 18:16                                                                                             ` Peter Zijlstra
2009-01-09 18:24                                                                                               ` Linus Torvalds
2009-01-08 18:00                                                                     ` Linus Torvalds
2009-01-08 18:33                                                                       ` Ingo Molnar
2009-01-08 18:41                                                                         ` H. Peter Anvin
2009-01-09  3:46                                                                           ` Linus Torvalds
2009-01-09  4:59                                                                             ` David Miller
2009-01-09  5:00                                                                             ` H. Peter Anvin
2009-01-09 13:00                                                                             ` [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact Ingo Molnar
2009-01-09 14:03                                                                               ` jim owens
2009-01-09 15:35                                                                                 ` Ingo Molnar
2009-01-09 16:28                                                                                   ` Linus Torvalds
2009-01-09 19:56                                                                                     ` H. Peter Anvin
2009-01-10  8:55                                                                                       ` Chris Samuel
2009-01-09 20:17                                                                                     ` Nicholas Miell
2009-01-09 20:29                                                                                       ` Linus Torvalds
2009-01-09 23:28                                                                                         ` Nicholas Miell
2009-01-10  0:05                                                                                           ` Linus Torvalds
2009-01-10  0:37                                                                                             ` Andi Kleen
2009-01-10  0:41                                                                                               ` Linus Torvalds
2009-01-10  1:08                                                                                                 ` Andi Kleen
2009-01-10  2:12                                                                                             ` Nicholas Miell
2009-01-10  4:05                                                                                               ` Linus Torvalds
2009-01-10  6:44                                                                                                 ` Nicholas Miell
2009-01-09 20:29                                                                                       ` Steven Rostedt
2009-01-09 16:34                                                                                   ` H. Peter Anvin
2009-01-09 16:44                                                                                     ` Linus Torvalds
2009-01-09 16:47                                                                                       ` Dirk Hohndel
2009-01-09 16:46                                                                                     ` Dirk Hohndel
2009-01-09 16:51                                                                                       ` H. Peter Anvin
2009-01-09 17:07                                                                                         ` Steven Rostedt
2009-01-09 17:14                                                                                           ` Linus Torvalds
2009-01-09 17:32                                                                                           ` Andi Kleen
2009-01-09 17:20                                                                                       ` Andi Kleen
2009-01-09 17:11                                                                                         ` Linus Torvalds
2009-01-09 17:46                                                                                           ` Andi Kleen
2009-01-09 17:28                                                                                         ` Matthew Wilcox
2009-01-09 17:47                                                                                           ` Andi Kleen
2009-01-09 17:39                                                                                             ` Matthew Wilcox
2009-01-09 17:54                                                                                               ` Linus Torvalds
2009-01-09 18:07                                                                                                 ` H. Peter Anvin
2009-01-09 18:19                                                                                                 ` Andi Kleen
2009-01-09 18:59                                                                                                   ` Richard Guenther
2009-01-09 19:13                                                                                                     ` H. Peter Anvin
2009-01-09 19:21                                                                                                     ` Andi Kleen
2009-01-09 19:10                                                                                                       ` Richard Guenther
2009-01-09 19:17                                                                                                         ` H. Peter Anvin
2009-01-09 19:40                                                                                                         ` Andi Kleen
2009-01-09 19:32                                                                                                           ` Richard Guenther
2009-01-09 19:09                                                                                                 ` Richard Guenther
2009-01-09 19:44                                                                                                   ` Linus Torvalds
2009-01-09 20:14                                                                                                     ` Richard Guenther
2009-01-09 20:26                                                                                                       ` Linus Torvalds
2009-01-09 20:37                                                                                                         ` Richard Guenther
2009-01-09 21:23                                                                                                           ` Theodore Tso
2009-01-09 21:33                                                                                                             ` Steven Rostedt
2009-01-09 20:58                                                                                                         ` Sam Ravnborg
2009-01-09 17:41                                                                                             ` Dirk Hohndel
2009-01-09 18:02                                                                                               ` Andi Kleen
2009-01-09 17:57                                                                                                 ` Linus Torvalds
2009-01-09 18:55                                                                                                   ` Andi Kleen
2009-01-09 19:00                                                                                                     ` Linus Torvalds
2009-01-09 19:35                                                                                                       ` Andi Kleen
2009-01-09 19:29                                                                                                         ` Matthew Wilcox
2009-01-09 19:48                                                                                                           ` Linus Torvalds
2009-01-09 19:52                                                                                                     ` Theodore Tso
2009-01-09 22:07                                                                                                       ` Arjan van de Ven
2009-01-09 22:44                                                                                                       ` Andi Kleen
     [not found]                                                                                                       ` <20090109224410.GQ26290@one.firstfloor.org>
2009-01-09 22:35                                                                                                         ` H. Peter Anvin
2009-01-09 22:55                                                                                                           ` Arjan van de Ven
2009-01-09 23:32                                                                                                         ` Sam Ravnborg
2009-01-10  5:29                                                                                                       ` Arjan van de Ven
2009-01-10  5:57                                                                                                         ` H. Peter Anvin
2009-01-11 22:45                                                                                     ` Valdis.Kletnieks
2009-01-09 17:13                                                                                 ` Christoph Hellwig
2009-01-09 15:25                                                                               ` Ingo Molnar
2009-01-08 19:00                                                                         ` [PATCH -v7][RFC]: mutex: implement adaptive spinning Andi Kleen
2009-01-09  1:42                                                                           ` H. Peter Anvin
2009-01-09 13:37                                                                             ` Ingo Molnar
2009-01-09 16:09                                                                               ` Linus Torvalds
2009-01-09 16:23                                                                                 ` H. Peter Anvin
2009-01-09 16:37                                                                                   ` Linus Torvalds
2009-01-09 20:41                                                                                 ` Ingo Molnar
2009-01-09 20:56                                                                                   ` Ingo Molnar
2009-01-09 20:56                                                                                   ` Linus Torvalds
2009-01-09 21:34                                                                                     ` Ingo Molnar
2009-01-09 21:41                                                                                       ` Harvey Harrison
2009-01-09 21:50                                                                                         ` Linus Torvalds
2009-01-09 21:59                                                                                           ` Harvey Harrison
2009-01-09 22:09                                                                                             ` Linus Torvalds
2009-01-09 22:13                                                                                               ` Harvey Harrison
2009-01-09 22:25                                                                                               ` Harvey Harrison
2009-01-10  0:53                                                                                                 ` Jamie Lokier
2009-01-10  1:04                                                                                                   ` Linus Torvalds
2009-01-10  1:13                                                                                                   ` Andi Kleen
2009-01-09 23:12                                                                                           ` Ingo Molnar
2009-01-09 23:24                                                                                             ` Linus Torvalds
2009-01-10  1:01                                                                                               ` Ingo Molnar
2009-01-10  1:06                                                                                                 ` Linus Torvalds
2009-01-10  1:20                                                                                                   ` Ingo Molnar
2009-01-10  1:34                                                                                                     ` Linus Torvalds
2009-01-10  1:08                                                                                                 ` Harvey Harrison
2009-01-10  1:30                                                                                                   ` Linus Torvalds
2009-01-10  5:03                                                                                                     ` H. Peter Anvin
2009-01-10  5:28                                                                                                       ` Linus Torvalds
2009-01-10  5:57                                                                                                         ` H. Peter Anvin
2009-01-11  0:54                                                                                                         ` Ingo Molnar
2009-01-12  1:56                                                                                                           ` Jamie Lokier
2009-01-12  8:40                                                                                                             ` Ingo Molnar
2009-01-10  1:18                                                                                                 ` Steven Rostedt
2009-01-10  1:39                                                                                                 ` Linus Torvalds
2009-01-10  1:41                                                                                                 ` Andrew Morton
2009-01-10  3:02                                                                                                   ` Andi Kleen
2009-01-11 12:26                                                                                                     ` David Woodhouse
2009-01-11 18:13                                                                                                       ` Andi Kleen
2009-01-11 19:25                                                                                                         ` Linus Torvalds
2009-01-11 20:14                                                                                                           ` gcc inlining heuristics was " Andi Kleen
2009-01-11 20:15                                                                                                             ` David Woodhouse
2009-01-11 20:34                                                                                                               ` Andi Kleen
2009-01-11 20:51                                                                                                                 ` Linus Torvalds
2009-01-11 23:05                                                                                                                   ` Linus Torvalds
2009-01-12  0:12                                                                                                                     ` Andi Kleen
2009-01-12  0:21                                                                                                                       ` Linus Torvalds
2009-01-12  0:52                                                                                                                         ` Andi Kleen
2009-01-12  1:20                                                                                                                           ` H. Peter Anvin
2009-01-12 18:06                                                                                                                           ` Bernd Schmidt
2009-01-12 19:02                                                                                                                             ` Linus Torvalds
2009-01-12 19:32                                                                                                                               ` Andi Kleen
2009-01-12 19:22                                                                                                                                 ` H. Peter Anvin
2009-01-12 19:45                                                                                                                                   ` Linus Torvalds
2009-01-12 23:01                                                                                                                                     ` Jamie Lokier
2009-01-12 23:19                                                                                                                                       ` Linus Torvalds
2009-01-12 19:42                                                                                                                                 ` Linus Torvalds
     [not found]                                                                                                                                 ` <alpine.LFD.2.00.0901121128080.6528@localhost.localdomain>
2009-01-12 20:08                                                                                                                                   ` Linus Torvalds
2009-01-12 22:03                                                                                                                                   ` Bernd Schmidt
2009-01-13  0:21                                                                                                                                     ` Linus Torvalds
2009-01-13  1:30                                                                                                                                       ` Steven Rostedt
2009-01-19  0:13                                                                                                                                     ` Ingo Molnar
2009-01-19  6:22                                                                                                                                       ` Nick Piggin
2009-01-19 21:01                                                                                                                                         ` Linus Torvalds
2009-01-20  0:51                                                                                                                                           ` Nick Piggin
2009-01-20 12:38                                                                                                                                             ` Ingo Molnar
2009-01-20 19:49                                                                                                                                               ` David Woodhouse
2009-01-20 21:05                                                                                                                                                 ` Ingo Molnar
2009-01-20 21:23                                                                                                                                                   ` Linus Torvalds
2009-01-20 22:05                                                                                                                                                     ` Ingo Molnar
2009-01-21  1:22                                                                                                                                                       ` H. Peter Anvin
2009-01-21  8:54                                                                                                                                                       ` Andi Kleen
2009-01-21  8:52                                                                                                                                                         ` Nick Piggin
2009-01-21  9:20                                                                                                                                                           ` Andi Kleen
2009-01-21  9:25                                                                                                                                                             ` Nick Piggin
2009-01-21  9:54                                                                                                                                                               ` Andi Kleen
2009-01-21 10:14                                                                                                                                                                 ` Nick Piggin
2009-01-20  4:20                                                                                                                                           ` Andi Kleen
2009-01-20 17:43                                                                                                                                           ` Miguel F Mascarenhas Sousa Filipe
2009-01-12 19:55                                                                                                                               ` Bernd Schmidt
2009-01-12 20:11                                                                                                                                 ` Linus Torvalds
2009-01-12  7:59                                                                                                       ` Hard to debug kernel issues (was Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning) Chris Samuel
2009-01-10  6:44                                                                                                 ` [PATCH -v7][RFC]: mutex: implement adaptive spinning H. Peter Anvin
2009-01-09 21:46                                                                                       ` Linus Torvalds
2009-01-09 21:58                                                                                     ` Ingo Molnar
2009-01-09 21:15                                                                               ` Andi Kleen
2009-01-08 19:59                                                                         ` Harvey Harrison
2009-01-09  1:44                                                                           ` H. Peter Anvin
2009-01-09  2:24                                                                             ` Harvey Harrison
2009-01-09  5:05                                                                               ` H. Peter Anvin
2009-01-09  3:35                                                                             ` Andi Kleen
2009-01-09  3:42                                                                               ` Linus Torvalds
2009-01-09  6:57                                                                                 ` Andi Kleen
2009-01-09  6:00                                                                               ` Andrew Morton
2009-01-09  6:58                                                                                 ` Andi Kleen
2009-01-09 13:05                                                                               ` Chris Mason
2009-01-08 17:23                                                                   ` Peter Zijlstra
2009-01-07 22:54                                                       ` [PATCH -v5][RFC]: " Dave Kleikamp
2009-01-07 23:19                                                         ` Linus Torvalds
2009-01-07 23:49                                                           ` Steven Rostedt
2009-01-07 23:57                                                             ` Linus Torvalds
2009-01-08  2:18                                                               ` KAMEZAWA Hiroyuki
2009-01-08  2:33                                                               ` Steven Rostedt
2009-01-08  2:49                                                                 ` KAMEZAWA Hiroyuki
2009-01-08  6:52                                                             ` Andi Kleen
2009-01-08 14:24                                                               ` Steven Rostedt
2009-01-08 14:45                                                                 ` Andi Kleen
2009-01-07 21:37                                               ` Andi Kleen
2009-01-07 21:35                                                 ` Andrew Morton
2009-01-07 17:20                                           ` [PATCH -v4][RFC]: " Chris Mason
2009-01-07 17:50                                             ` Linus Torvalds
2009-01-07 18:00                                               ` Chris Mason
2009-01-07  3:57                                     ` [PATCH][RFC]: mutex: adaptive spin Lai Jiangshan
2009-01-07  6:32                                       ` Peter Zijlstra
2009-01-07  7:34                                         ` Lai Jiangshan
2009-01-07 13:35                                           ` Matthew Wilcox
2009-01-06 22:31                             ` Paul E. McKenney
2009-01-06 15:55                 ` Linus Torvalds
2009-01-06 16:11                   ` Linus Torvalds
2009-01-06 16:28                     ` Steven Rostedt
2009-01-06 16:40                     ` Linus Torvalds
2009-01-06 16:42                       ` Linus Torvalds
2009-01-06 17:02                         ` Ingo Molnar
2009-01-06 16:54                       ` Ingo Molnar
2009-01-06 16:56                         ` Ingo Molnar
2009-01-06 16:59                         ` Linus Torvalds
2009-01-06 16:19                   ` Chris Mason
2009-01-10 17:52                 ` Pavel Machek
2009-01-06 13:29               ` Nick Piggin
2009-01-06 16:23               ` Chris Mason
2009-01-06 17:08               ` Andrew Morton
2009-01-06 17:37                 ` Steven Rostedt
2009-01-06 18:02               ` Linus Torvalds
2009-01-06 18:20                 ` Steven Rostedt
2009-01-06 18:28                   ` Linus Torvalds
2009-01-06 18:25                 ` Linus Torvalds
2009-01-06 19:03                   ` Steven Rostedt
2009-01-05 14:34           ` Btrfs for mainline Chris Mason
2009-01-04  8:32 ` Gabor MICSKO
2009-01-05 14:35   ` Chris Mason
2009-01-05 15:01     ` Tomasz Torcz
2009-01-05 16:30       ` Chris Mason
2009-01-06 19:41 ` Chris Mason
2009-01-07  9:33   ` David Woodhouse
2009-01-07 18:45     ` Chris Mason
2009-01-08 20:15   ` jim owens
2009-01-11 23:34 ` Andrew Morton
2009-01-12 13:58   ` Chris Mason
2009-01-12 15:14     ` Miguel Figueiredo Mascarenhas Sousa Filipe
2009-01-12 15:17       ` Chris Mason

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