linux-kernel - Re: [PATCH 3/3] mm, memory_hotplug: move movable

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Date:   Mon, 29 May 2017 14:08:19 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, Mel Gorman <mgorman@...e.de>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Jerome Glisse <jglisse@...hat.com>,
        Reza Arbab <arbab@...ux.vnet.ibm.com>,
        Yasuaki Ishimatsu <yasu.isimatu@...il.com>,
        qiuxishi@...wei.com, Kani Toshimitsu <toshi.kani@....com>,
        slaoub@...il.com, Joonsoo Kim <js1304@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        David Rientjes <rientjes@...gle.com>,
        Daniel Kiper <daniel.kiper@...cle.com>,
        Igor Mammedov <imammedo@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH 3/3] mm, memory_hotplug: move movable_node to the hotplug
 proper

On 05/29/2017 01:41 PM, Michal Hocko wrote:
> From: Michal Hocko <mhocko@...e.com>
> 
> movable_node_is_enabled is defined in memblock proper while it
> is initialized from the memory hotplug proper. This is quite messy
> and it makes a dependency between the two so move movable_node along
> with the helper functions to memory_hotplug.
> 
> To make it more entertaining the kernel parameter is ignored unless
> CONFIG_HAVE_MEMBLOCK_NODE_MAP=y because we do not have the node
> information for each memblock otherwise. So let's warn when the option
> is disabled.
> 
> Acked-by: Vlastimil Babka <vbabka@...e.cz>
> Signed-off-by: Michal Hocko <mhocko@...e.com>

Acked-by: Vlastimil Babka <vbabka@...e.cz>