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Date: Wed, 12 Dec 2018 09:44:04 +0100
From: osalvador@suse.de
Subject: Re: [RFC Get rid of shrink code - memory-hotplug]
In-Reply-To: <20181210171656.GV1286@dhcp22.suse.cz>
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To: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>, David Hildenbrand <david@redhat.com>, dan.j.williams@gmail.com, pasha.tatashin@soleen.com, linux-mm@kvack.org, owner-linux-mm@kvack.org

>> Now, when dropping the shrink code and re-evaluating zone_contiguous 
>> in
>> offline
>> operation, set_zone_contiguous() will return false, leaving us with
>> zone_contiguous
>> unset.
> 
> Yeah. But does anything prevent us to alter the logic that the zone is
> not contiguous iff there are offline holes or zones intermixed.

Yes, thanks for the hint.
I think this is the best way to go.