linux-kernel - Re: Memory hotplug failed to offline on bare metal system of multiple nodes

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Message-ID: <20181101094243.GD14493@MiWiFi-R3L-srv>
Date:   Thu, 1 Nov 2018 17:42:43 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: Memory hotplug failed to offline on bare metal system of
 multiple nodes

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.