linux-kernel - Re: [PATCH 6/8] migrate: remove VM_HUGETLB from vma flag check in vma

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Date:	Fri, 19 Jul 2013 13:26:12 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>,
	Michal Hocko <mhocko@...e.cz>, Rik van Riel <riel@...hat.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	Naoya Horiguchi <nao.horiguchi@...il.com>
Subject: Re: [PATCH 6/8] migrate: remove VM_HUGETLB from vma flag check in vma_migratable()

On Fri, Jul 19, 2013 at 5:34 AM, Naoya Horiguchi
<n-horiguchi@...jp.nec.com> wrote:
> This patch enables hugepage migration from migrate_pages(2),
> move_pages(2), and mbind(2).
>
> Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
> ---

Acked-by: Hillf Danton <dhillf@...il.com>

>  include/linux/mempolicy.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git v3.11-rc1.orig/include/linux/mempolicy.h v3.11-rc1/include/linux/mempolicy.h
> index 0d7df39..2e475b5 100644
> --- v3.11-rc1.orig/include/linux/mempolicy.h
> +++ v3.11-rc1/include/linux/mempolicy.h
> @@ -173,7 +173,7 @@ extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol);
>  /* Check if a vma is migratable */
>  static inline int vma_migratable(struct vm_area_struct *vma)
>  {
> -       if (vma->vm_flags & (VM_IO | VM_HUGETLB | VM_PFNMAP))
> +       if (vma->vm_flags & (VM_IO | VM_PFNMAP))
>                 return 0;
>         /*
>          * Migration allocates pages in the highest zone. If we cannot
> --
> 1.8.3.1
>
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