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Date: Thu, 12 Mar 2015 18:49:26 +0000
From: Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures
 occur
Message-ID: <20150312184925.GH3406@suse.de>
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Chinner <david@fromorbit.com>, Ingo Molnar <mingo@kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, xfs@oss.sgi.com, ppc-dev <linuxppc-dev@lists.ozlabs.org>

On Thu, Mar 12, 2015 at 09:20:36AM -0700, Linus Torvalds wrote:
> On Thu, Mar 12, 2015 at 6:10 AM, Mel Gorman <mgorman@suse.de> wrote:
> >
> > I believe you're correct and it matches what was observed. I'm still
> > travelling and wireless is dirt but managed to queue a test using pmd_dirty
> 
> Ok, thanks.
> 
> I'm not entirely happy with that change, and I suspect the whole
> heuristic should be looked at much more (maybe it should also look at
> whether it's executable, for example), but it's a step in the right
> direction.
> 

I can follow up when I'm back in work properly. As you have already pulled
this in directly, can you also consider pulling in "mm: thp: return the
correct value for change_huge_pmd" please? The other two patches were very
minor can be resent through the normal paths later.

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