linux-kernel - Re: [PATCH 0/6] mm: make movable onlining suck less

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Message-Id: <20170403195830.64libncet5l6vuvb@arbab-laptop>
Date:   Mon, 3 Apr 2017 14:58:30 -0500
From:   Reza Arbab <arbab@...ux.vnet.ibm.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>, Vlastimil Babka <vbabka@...e.cz>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Yasuaki Ishimatsu <yasu.isimatu@...il.com>,
        Tang Chen <tangchen@...fujitsu.com>, qiuxishi@...wei.com,
        Kani Toshimitsu <toshi.kani@....com>, slaoub@...il.com,
        Joonsoo Kim <js1304@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Zhang Zhen <zhenzhang.zhang@...wei.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>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Dan Williams <dan.j.williams@...il.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Lai Jiangshan <laijs@...fujitsu.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH 0/6] mm: make movable onlining suck less

On Mon, Apr 03, 2017 at 01:55:46PM +0200, Michal Hocko wrote:
>Anyting? I would really appreciate a feedback from IBM and Futjitsu 
>guys who have shaped this code last few years. Also Igor and Vitaly 
>seem to be using memory hotplug in virtualized environments. I do not 
>expect they would see a huge advantage of the rework but I would 
>appreciate to give it some testing to catch any potential regressions.

Sorry for the delayed reply.

With this set, I'm able to "online_movable" blocks in ascending order.  

However, I am seeing a regression. When adding memory to a memoryless 
node, it shows up in node 0 instead. I'm digging to see if I can help 
narrow down where things go wrong.

-- 
Reza Arbab