linux-kernel - Re: [PATCH 9/9] remove /proc/sys/vm/hugepages_treat_as

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Message-ID: <1363651652-dcf5qvg4-mutt-n-horiguchi@ah.jp.nec.com>
Date:	Mon, 18 Mar 2013 20:07:32 -0400
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Michal Hocko <mhocko@...e.cz>
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>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 9/9] remove /proc/sys/vm/hugepages_treat_as_movable

On Mon, Mar 18, 2013 at 04:51:25PM +0100, Michal Hocko wrote:
> On Thu 21-02-13 14:41:48, Naoya Horiguchi wrote:
> > Now hugepages are definitely movable. So allocating hugepages from
> > ZONE_MOVABLE is natural and we have no reason to keep this parameter.
> 
> The sysctl is a part of user interface so you shouldn't remove it right
> away. What we can do is to make it noop and only WARN() that the
> interface will be removed later so that userspace can prepare for that.
> 

Yes, you're right. I'll replace the handler with noop.

Thanks,
Naoya
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