linux-kernel - Re: Regression in 2.6.23-rc2-mm2, mounting cpusets causes a hang

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Message-ID: <Pine.LNX.4.64.0708151338140.7628@schroedinger.engr.sgi.com>
Date:	Wed, 15 Aug 2007 13:38:56 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	"Serge E. Hallyn" <serge@...lyn.com>
cc:	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>, bob.picco@...com,
	nacc@...ibm.com, kamezawa.hiroyu@...fujitsu.com, mel@...net.ie,
	akpm@...ux-foundation.org, Balbir Singh <balbir@...ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	ckrm-tech <ckrm-tech@...ts.sourceforge.net>
Subject: Re: Regression in 2.6.23-rc2-mm2, mounting cpusets causes a hang

On Wed, 15 Aug 2007, Serge E. Hallyn wrote:

> > Index: Linux/mm/page_alloc.c
> > ===================================================================
> > --- Linux.orig/mm/page_alloc.c	2007-08-15 10:01:23.000000000 -0400
> > +++ Linux/mm/page_alloc.c	2007-08-15 10:05:41.000000000 -0400
> > @@ -52,7 +52,14 @@
> >   */
> >  nodemask_t node_states[NR_NODE_STATES] __read_mostly = {
> >  	[N_POSSIBLE] = NODE_MASK_ALL,
> > -	[N_ONLINE] = { { [0] = 1UL } }
> > +	[N_ONLINE] = { { [0] = 1UL } },
> > +#ifndef CONFIG_NUMA
> > +	[N_NORMAL_MEMORY] = { { [0] = 1UL } },
> > +#ifdef CONFIG_HIGHMEM
> > +	[N_HIGH_MEMORY] = { { [0] = 1UL } },
> > +#endif
> > +	[N_CPU] = { { [0] = 1UL } },
> > +#endif	/* NUMA */
> >  };
> >  EXPORT_SYMBOL(node_states);

> Will let you know how it works.

The patch above looks like we are heading in the right direction.
-
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