linux-kernel - Re: [PATCH 05/10] migrate: add hugepage migration code to migrate

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Message-ID: <515F3F5C.2090709@gmail.com>
Date:	Fri, 05 Apr 2013 17:17:16 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
CC:	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>, Hugh Dickins <hughd@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>,
	Hillf Danton <dhillf@...il.com>, Michal Hocko <mhocko@...e.cz>,
	linux-kernel@...r.kernel.org, kosaki.motohiro@...il.com
Subject: Re: [PATCH 05/10] migrate: add hugepage migration code to migrate_pages()

(3/22/13 4:23 PM), Naoya Horiguchi wrote:
> This patch extends check_range() to handle vma with VM_HUGETLB set.
> We will be able to migrate hugepage with migrate_pages(2) after
> applying the enablement patch which comes later in this series.
> 
> Note that for larger hugepages (covered by pud entries, 1GB for
> x86_64 for example), we simply skip it now.

check_range() has largely duplication with mm_walk and it is quirk subset.
Instead of, could you replace them to mm_walk and enhance/cleanup mm_walk?


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