Re: [PATCH] mm, isolation: avoid checking unmovable pages across pageblock boundary

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To: David Hildenbrand <david@xxxxxxxxxx>
Subject: Re: [PATCH] mm, isolation: avoid checking unmovable pages across pageblock boundary
From: Michal Hocko <mhocko@xxxxxxxx>
Date: Mon, 14 Sep 2020 17:00:48 +0200
Cc: Li Xinhai <lixinhai.lxh@xxxxxxxxx>, linux-mm@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx
In-reply-to: <5890911e-1006-9f3a-b444-8f0bc626899f@redhat.com>
References: <20200824065811.383266-1-lixinhai.lxh@gmail.com> <20200825082623.GC22869@dhcp22.suse.cz> <5890911e-1006-9f3a-b444-8f0bc626899f@redhat.com>

On Tue 08-09-20 10:30:35, David Hildenbrand wrote:
[...]
> - gigantic pages (alloc_contig_range()) never use ranges with holes
> - CMA (alloc_contig_range()) never uses ranges with holes.

Where is that enforced?

-- 
Michal Hocko
SUSE Labs

Follow-Ups:
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References:
- [PATCH] mm, isolation: avoid checking unmovable pages across pageblock boundary
  - From: Li Xinhai
- Re: [PATCH] mm, isolation: avoid checking unmovable pages across pageblock boundary
  - From: Michal Hocko
- Re: [PATCH] mm, isolation: avoid checking unmovable pages across pageblock boundary
  - From: David Hildenbrand

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