Re: [PATCH v2] mm:mempolicy: skip VM_HUGETLB and VM_MIXEDMAP VMA for lazy mbind
From: David Rientjes
Date: Wed Jan 20 2016 - 18:32:41 EST
On Wed, 20 Jan 2016, Liang Chen wrote:
> VM_HUGETLB and VM_MIXEDMAP vma needs to be excluded to avoid compound
> pages being marked for migration and unexpected COWs when handling
> hugetlb fault.
> Thanks to Naoya Horiguchi for reminding me on these checks.
> Signed-off-by: Liang Chen <liangchen.linux@xxxxxxxxx>
> Signed-off-by: Gavin Guo <gavin.guo@xxxxxxxxxxxxx>
> Suggested-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>