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Date:   Wed, 18 Jul 2018 15:56:19 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     David Hildenbrand <david@redhat.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Alexander Potapenko <glider@google.com>,
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Subject: Re: [PATCH v1 00/10] mm: online/offline 4MB chunks controlled by
 device driver
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On Wed 18-07-18 15:47:33, David Hildenbrand wrote:
[...]
> So would you agree to change the comment in page-flags.h to something like
> 
> "PG_reserved is set for special pages, that should never be touched
> (read/written). Some of them might not even exist."

Yes. Except you should mention that they should be touched by anybody
except their owners.
-- 
Michal Hocko
SUSE Labs