linux-kernel - Re: [PATCH 3/4] mm: mempolicy: Skip inaccessible VMAs when setting MPOL_MF

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Date:	Thu, 02 Oct 2014 11:51:21 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>, Dave Jones <davej@...hat.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Michel Lespinasse <walken@...gle.com>,
	Kirill A Shutemov <kirill.shutemov@...ux.intel.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] mm: mempolicy: Skip inaccessible VMAs when setting
 MPOL_MF_LAZY

On 10/02/2014 09:29 AM, Mel Gorman wrote:
> PROT_NUMA VMAs are skipped to avoid problems distinguishing between
> present, prot_none and special entries. MPOL_MF_LAZY is not visible from
> userspace since commit a720094ded8c ("mm: mempolicy: Hide MPOL_NOOP and
> MPOL_MF_LAZY from userspace for now") but it should still skip VMAs the
> same way task_numa_work does.
> 
> Signed-off-by: Mel Gorman <mgorman@...e.de>

Acked-by: Rik van Riel <riel@...hat.com>

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