linux-kernel - Re: [patch -mm] oom: fix constraint deadlock

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Message-Id: <20070427002730.0c67d90f.akpm@linux-foundation.org>
Date:	Fri, 27 Apr 2007 00:27:30 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andi Kleen <ak@...e.de>, Nick Piggin <npiggin@...e.de>,
	Christoph Lameter <clameter@...r.sgi.com>,
	"Martin J. Bligh" <mbligh@...igh.org>, linux-kernel@...r.kernel.org
Subject: Re: [patch -mm] oom: fix constraint deadlock

On Fri, 27 Apr 2007 00:19:43 -0700 (PDT) David Rientjes <rientjes@...gle.com> wrote:

> On Fri, 27 Apr 2007, Andrew Morton wrote:
> 
> > > Subject: [patch -mm] oom: fix constraint deadlock
> > > Date: Thu, 26 Apr 2007 23:18:17 -0700 (PDT)
> > > 
> > > Fixes a deadlock in the OOM killer for allocations that are not
> > > __GFP_HARDWALL.
> > 
> > Thanks.
> > 
> > Why is this described as "patch -mm"?  It applies to mainline.  If it's
> > fixing a -mm patch, do you know which one?
> > 
> 
> Fair enough.  It definitely is applicable to mainline and fixes a deadlock 
> which we've been struggling with for awhile because not only does it block 
> while holding callback_mutex, but also tasklist_lock.

OK, thanks.  I tagged it for a 2.6.20.x backport as well.
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