linux-kernel - Re: [PATCH 10/10] prepare to remove /proc/sys/vm/hugepages_treat_as

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Date:	Fri, 05 Apr 2013 20:15:48 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
CC:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>, 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>, linux-kernel@...r.kernel.org,
	kosaki.motohiro@...il.com
Subject: Re: [PATCH 10/10] prepare to remove /proc/sys/vm/hugepages_treat_as_movable

(3/25/13 11:12 AM), Michal Hocko wrote:
> On Fri 22-03-13 16:23:55, Naoya Horiguchi wrote:
> [...]
>> @@ -2086,11 +2085,7 @@ int hugetlb_treat_movable_handler(struct ctl_table *table, int write,
>>  			void __user *buffer,
>>  			size_t *length, loff_t *ppos)
>>  {
>> -	proc_dointvec(table, write, buffer, length, ppos);
>> -	if (hugepages_treat_as_movable)
>> -		htlb_alloc_mask = GFP_HIGHUSER_MOVABLE;
>> -	else
>> -		htlb_alloc_mask = GFP_HIGHUSER;
>> +	/* hugepages_treat_as_movable is obsolete and to be removed. */
> 
> WARN_ON_ONCE("This knob is obsolete and has no effect. It is scheduled for removal")

Indeed.
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