On Mon, Oct 06, 2014 at 11:09:54AM +0100, Mel Gorman wrote:
> On Sun, Oct 05, 2014 at 04:42:11PM -0700, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> >
> > The patch below does not apply to the 3.16-stable tree.
> > If someone wants it applied there, or to any other stable or longterm
> > tree, then please email the backport, including the original git commit
> > id to <stable@xxxxxxxxxxxxxxx>.
> >
> > thanks,
> >
> > greg k-h
> >
> > ------------------ original commit in Linus's tree ------------------
> >
> > From abc40bd2eeb77eb7c2effcaf63154aad929a1d5f Mon Sep 17 00:00:00 2001
> > From: Mel Gorman <mgorman@xxxxxxx>
> > Date: Thu, 2 Oct 2014 19:47:42 +0100
> > Subject: [PATCH] mm: numa: Do not mark PTEs pte_numa when splitting huge pages
> >
> > This patch reverts 1ba6e0b50b ("mm: numa: split_huge_page: transfer the
> > NUMA type from the pmd to the pte"). If a huge page is being split due
> > a protection change and the tail will be in a PROT_NONE vma then NUMA
> > hinting PTEs are temporarily created in the protected VMA.
> >
>
> Hi Greg,
>
> A rebased patch is below. If you would prefer to match upstream then I
> suggest you pull in f8303c2582b889351e261ff18c4d8eb197a77db2 ("mm, thp:
> move invariant bug check out of loop in __split_huge_page_map"). It's a
> harmless patch with a small performance gain and once applied then commit
> abc40bd2eeb77eb7c2effcaf63154aad929a1d5f should have no conflicts. I'm
> happy with either option.
Thanks, I've now done that.
greg k-h
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