linux-kernel - Re: [PATCH v1] mm/memory_hotplug: don't check the nid in find_(smallest|biggest)_section

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Message-Id: <7D8F1E5C-5A39-4C76-AD2F-4D0954DB57F5@redhat.com>
Date:   Wed, 27 Nov 2019 20:52:40 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Qian Cai <cai@....pw>
Cc:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...nel.org>,
        Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v1] mm/memory_hotplug: don't check the nid in find_(smallest|biggest)_section_pfn



> Am 27.11.2019 um 20:37 schrieb Qian Cai <cai@....pw>:
> 
> 
> 
>> On Nov 27, 2019, at 2:06 PM, David Hildenbrand <david@...hat.com> wrote:
>> 
>> The zone pointer is unique for every node. (in contrast to the zone index).
> 
> I am not sure if it is worth optimizing there. The existing nid check looks quite straight-forward and cheap.

I understand but strongly dislike your attitude towards code changes ;)

>