Date: Sat, 16 Jun 2012 18:11:36 -0700 (PDT)
From: David Rientjes <rientjes@google.com>
To: David Mackey <tdmackey@twitter.com>,
        Andrew Morton <akpm@linux-foundation.org>, penberg@kernel.org
cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Andi Kleen <ak@linux.intel.com>, cl@linux.com
Subject: Re: [PATCH v5] slab/mempolicy: always use local policy from interrupt
 context
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References: <1338438844-5022-1-git-send-email-andi@firstfloor.org> <1339234803-21106-1-git-send-email-tdmackey@twitter.com> <alpine.DEB.2.00.1206091917580.7832@chino.kir.corp.google.com>
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On Sat, 9 Jun 2012, David Rientjes wrote:

> On Sat, 9 Jun 2012, David Mackey wrote:
> 
> > diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> > index f15c1b2..cb0b230 100644
> > --- a/mm/mempolicy.c
> > +++ b/mm/mempolicy.c
> > @@ -1602,8 +1602,14 @@ static unsigned interleave_nodes(struct mempolicy *policy)
> >   * task can change it's policy.  The system default policy requires no
> >   * such protection.
> >   */
> > -unsigned slab_node(struct mempolicy *policy)
> > +unsigned slab_node(void)
> >  {
> > +	struct mempolicy *policy;
> > +
> > +	if (in_interrupt())
> > +		return numa_node_id();
> > +
> > +	policy = current->mempolicy;
> >  	if (!policy || policy->flags & MPOL_F_LOCAL)
> >  		return numa_node_id();
> >  
> 
> Should probably be numa_mem_id() in both these cases for 
> CONFIG_HAVE_MEMORYLESS_NODES, but it won't cause a problem in this form 
> either.
> 
> Acked-by: David Rientjes <rientjes@google.com>
> 

Still missing from linux-next, who's going to pick this up?
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