linux-kernel - Re: [PATCH 5/9] mbind: add hugepage migration code to mbind()

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Message-ID: <20130910224704.GD18242@two.firstfloor.org>
Date:	Wed, 11 Sep 2013 00:47:04 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	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>,
	Rik van Riel <riel@...hat.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	Naoya Horiguchi <nao.horiguchi@...il.com>
Subject: Re: [PATCH 5/9] mbind: add hugepage migration code to mbind()

> > It makes me wonder how actually useful generic hugetlbfs page migration
> > will be in practice. Are there really usecases where the system
> > administrator is willing to create unused hugepage pools on each node
> > just to enable migration?
> 
> Maybe most users don't want it.

I'm sure some power users will be willing to do that.
Of course for a lot of others THP is enough.

-Andi
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