linux-kernel - Re: [PATCH] Memory hot added,The memory can not been added to movable zone

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Message-ID: <55DD705F.7000308@inspur.com>
Date:	Wed, 26 Aug 2015 15:53:03 +0800
From:	Changsheng Liu <liuchangsheng@...pur.com>
To:	Vlastimil Babka <vbabka@...e.cz>,
	Yasuaki Ishimatsu <yasu.isimatu@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	<isimatu.yasuaki@...fujitsu.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <yanxiaofeng@...pur.com>,
	Changsheng Liu <liuchangcheng@...pur.com>
Subject: Re: [PATCH] Memory hot added,The memory can not been added to movable
 zone



在 2015/8/26 14:12, Vlastimil Babka 写道:
> On 26.8.2015 2:36, Changsheng Liu wrote:
>>
>> 在 2015/8/25 19:13, Vlastimil Babka 写道:
>>> On 08/25/2015 12:25 PM, Changsheng Liu wrote:
>>>> Thanks very much for your review, I can move the memory from normal zone
>>>> to movable zone succesfully.
>>>> And thank you for let me understand the memory mechanism better.
>>>> 在 2015/8/25 3:15, Yasuaki Ishimatsu 写道:
>>> So you agree to drop the patch from -mm?
>>       The system add memory to normal zone defaultly so that it can be
>> used by kernel and then we can not move the memory to movable zone.
>>       The patch can add the memory to movable zone directlly.
> I thought that you confirmed that the following works?
> echo online_movable > /sys/devices/system/memory/memoryXXX/state
>
> If you want it to be the default, there's the node_movable kernel boot option.
> Does it work for you?
> .
     It does not work when memory is hot added.
>

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