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Date: Thu, 1 Nov 2018 17:42:43 +0800
From: Baoquan He <bhe@redhat.com>
Subject: Re: Memory hotplug failed to offline on bare metal system of
 multiple nodes
Message-ID: <20181101094243.GD14493@MiWiFi-R3L-srv>
References: <20181101091055.GA15166@MiWiFi-R3L-srv>
 <20181101092212.GB23921@dhcp22.suse.cz>
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To: Michal Hocko <mhocko@kernel.org>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org

On 11/01/18 at 10:22am, Michal Hocko wrote:
> > I haven't figured out why the above commit caused those memmory
> > block in MOVABL zone being not removable. Still checking. Attach the
> > tested reverting patch in this mail.
> 
> Could you check which of the test inside has_unmovable_pages claimed the
> failure? Going back to marking movable_zone as guaranteed to offline is
> just too fragile.

Sure, will add debugging code and check. Will update if anything found.