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Date:   Wed, 26 Jun 2019 15:57:44 +0200
From:   Michal Hocko <>
To:     Pingfan Liu <>
Cc:     Qian Cai <>, Andrew Morton <>,
        Barret Rhoden <>,
        Dave Hansen <>,
        Mike Rapoport <>,
        Peter Zijlstra <>,
        Michael Ellerman <>,
        Ingo Molnar <>,
        Oscar Salvador <>,
        Andy Lutomirski <>,
        Thomas Gleixner <>,,
        LKML <>
Subject: Re: [PATCH -next v2] mm/hotplug: fix a null-ptr-deref during NUMA

On Mon 24-06-19 16:42:20, Pingfan Liu wrote:
> Hi Michal,
> What about dropping the change of the online definition of your patch,
> just do the following?

I am sorry but I am unlikely to find some more time to look into this. I
am willing to help reviewing but I will not find enough time to focus on
this to fix up the patch. Are you willing to work on this and finish the
patch? It is a very tricky area with side effects really hard to see in
advance but going with a robust fix is definitely worth the effort.

Michal Hocko

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