Date: Wed, 14 Jun 2017 17:06:51 +0800
From: Wei Yang <richard.weiyang@gmail.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Reza Arbab <arbab@linux.vnet.ibm.com>,
        Yasuaki Ishimatsu <yasu.isimatu@gmail.com>, qiuxishi@huawei.com,
        Kani Toshimitsu <toshi.kani@hpe.com>, slaoub@gmail.com,
        Joonsoo Kim <js1304@gmail.com>, Andi Kleen <ak@linux.intel.com>,
        David Rientjes <rientjes@google.com>,
        Daniel Kiper <daniel.kiper@oracle.com>,
        Igor Mammedov <imammedo@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm, memory_hotplug: support movable_node for hotplugable
 nodes
Message-ID: <20170614090651.GA15288@WeideMacBook-Pro.local>
Reply-To: Wei Yang <richard.weiyang@gmail.com>
References: <20170608122318.31598-1-mhocko@kernel.org>
 <20170612042832.GA7429@WeideMBP.lan>
 <20170612064502.GD4145@dhcp22.suse.cz>
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On Mon, Jun 12, 2017 at 08:45:02AM +0200, Michal Hocko wrote:
>On Mon 12-06-17 12:28:32, Wei Yang wrote:
>> On Thu, Jun 08, 2017 at 02:23:18PM +0200, Michal Hocko wrote:
>> >From: Michal Hocko <mhocko@suse.com>
>> >
>> >movable_node kernel parameter allows to make hotplugable NUMA
>> >nodes to put all the hotplugable memory into movable zone which
>> >allows more or less reliable memory hotremove.  At least this
>> >is the case for the NUMA nodes present during the boot (see
>> >find_zone_movable_pfns_for_nodes).
>> >
>>=20
>> When movable_node is enabled, we would have overlapped zones, right?
>
>It won't based on this patch. See movable_pfn_range

I did grep in source code, but not find movable_pfn_range.

Could you share some light on that?

>
--=20
Wei Yang
Help you, Help me

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