linux-kernel - Re: [GIT PULL] adaptive spinning mutexes

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Message-ID: <20090115095321.GC5833@elte.hu>
Date:	Thu, 15 Jan 2009 10:53:21 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Gregory Haskins <ghaskins@...ell.com>,
	Matthew Wilcox <matthew@....cx>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>,
	Peter Morreale <pmorreale@...ell.com>,
	Sven Dietrich <SDietrich@...ell.com>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [GIT PULL] adaptive spinning mutexes


* Chris Mason <chris.mason@...cle.com> wrote:

> On Wed, 2009-01-14 at 19:33 +0100, Ingo Molnar wrote:
> > * Peter Zijlstra <peterz@...radead.org> wrote:
> > 
> > > Full series, including changelogs available at:
> > > 
> > >  http://programming.kicks-ass.net/kernel-patches/mutex-adaptive-spin/
> > > 
> > > and should shortly appear in a git tree near Ingo :-)
> > 
> > Linus,
> > 
> > Please pull the adaptive-mutexes-for-linus git tree from:
> > 
> >    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git adaptive-mutexes-for-linus
> > 
> 
> I was going to put this into the btrfs tree, but since you have a branch
> just for adaptive mutexes, is it easier to put there?
> 
> From: Chris Mason <chris.mason@...cle.com>
> 
> Btrfs: stop spinning on mutex_trylock and let the adaptive code spin for us
> 
> Mutexes now spin internally and the btrfs spin is no longer required for
> performance.
> 
> Signed-off-by: Chris Mason <chris.mason@...cle.com>

applied it to tip/core/locking, thanks Chris!

	Ingo
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