From: Michael Ellerman <mpe@ellerman.id.au>
To: Balbir Singh <bsingharora@gmail.com>,
        Reza Arbab <arbab@linux.vnet.ibm.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>, Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>,
        Nathan Fontenot <nfont@linux.vnet.ibm.com>,
        Stewart Smith <stewart@linux.vnet.ibm.com>,
        Alistair Popple <apopple@au1.ibm.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
        Tang Chen <tangchen@cn.fujitsu.com>, linux-kernel@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org,
        linux-mm@kvack.org
Subject: Re: [PATCH v4 3/5] powerpc/mm: allow memory hotplug into a memoryless node
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Date: Tue, 25 Oct 2016 20:39:45 +1100
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Balbir Singh <bsingharora@gmail.com> writes:
> FYI, these checks were temporary to begin with
>
> I found this in git history
>
> b226e462124522f2f23153daff31c311729dfa2f (powerpc: don't add memory to empty node/zone)

Nice thanks for digging it up.

  commit b226e462124522f2f23153daff31c311729dfa2f
  Author:     Mike Kravetz <kravetz@us.ibm.com>
  AuthorDate: Fri Dec 16 14:30:35 2005 -0800
                                  ^^^^
                                  
That is why maintainers don't like to merge "temporary" patches :)

cheers