linux-kernel - Re: [PATCH 10/18] mm: numa: Avoid unnecessary disruption of NUMA hinting during migration

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Message-ID: <20131219115905.GI11295@suse.de>
Date:	Thu, 19 Dec 2013 11:59:05 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Thorlton <athorlton@....com>,
	Rik van Riel <riel@...hat.com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/18] mm: numa: Avoid unnecessary disruption of NUMA
 hinting during migration

On Tue, Dec 17, 2013 at 05:53:45PM -0500, Sasha Levin wrote:
> Hi Mel,
> 
> On 12/10/2013 10:51 AM, Mel Gorman wrote:
> >+
> >+	/* mmap_sem prevents this happening but warn if that changes */
> >+	WARN_ON(pmd_trans_migrating(pmd));
> >+
> 
> I seem to be hitting this warning with latest -next kernel:
> 

Patch will follow shortly. I appreciate these trinity bug reports but in
the future is there any chance you could include the trinity command line
and the config file you used? Details on the machine would also be nice. In
this case, knowing if the machine was NUMA or not would have been helpful.

Thanks!

-- 
Mel Gorman
SUSE Labs
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