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Date: Tue, 19 Jun 2018 17:14:25 +0200
From: Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH 1/2] arm64: avoid alloc memory on offline node
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To: Punit Agrawal <punit.agrawal@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Xie XiuQi <xiexiuqi@huawei.com>, Hanjun Guo <guohanjun@huawei.com>, Bjorn Helgaas <helgaas@kernel.org>, tnowicki@caviumnetworks.com, linux-pci@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>, Will Deacon <will.deacon@arm.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, linux-mm@kvack.org, wanghuiqiang@huawei.com, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Bjorn Helgaas <bhelgaas@google.com>, Andrew Morton <akpm@linux-foundation.org>, zhongjiang <zhongjiang@huawei.com>, linux-arm <linux-arm-kernel@lists.infradead.org>

On Tue 19-06-18 15:54:26, Punit Agrawal wrote:
[...]
> In terms of $SUBJECT, I wonder if it's worth taking the original patch
> as a temporary fix (it'll also be easier to backport) while we work on
> fixing these other issues and enabling memoryless nodes.

Well, x86 already does that but copying this antipatern is not really
nice. So it is good as a quick fix but it would be definitely much
better to have a robust fix. Who knows how many other places might hit
this. You certainly do not want to add a hack like this all over...
-- 
Michal Hocko
SUSE Labs