On Mon, Mar 02, 2015 at 04:53:39AM +0000, Naoya Horiguchi wrote:
> On Sat, Feb 28, 2015 at 02:52:35PM -0800, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> >
> > The patch below does not apply to the 3.10-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>.
>
> This patch depends on commit 61f77eda9bbf ("mm/hugetlb: reduce arch dependent
> code around follow_huge_*"), but 61f77eda9bbf also conflicts due to the lack
> of other patches like commit 3212b535f200 ("mm: hugetlb: Copy huge_pmd_share
> from x86 to mm.") and commit 53313b2c9130 ("x86: mm: Remove general hugetlb
> code from x86.") and more.
>
> So there seems no easy way to backport this patch.
>
> Considering that the race condition fixed by this patch very rarely occurs
> on 3.10, because there's only one user of hugepage migration (soft offline)
> before 3.12, so I think that the risk of leaving this race is small enough
> and acceptable. So I'm OK to skip this backporting.
Ok, thanks for looking into this and letting me know.
greg k-h
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