linux-kernel - Re: [RFC PATCH 08/12] mm/compaction: simplify isolation order checks a bit

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Message-ID: <43786209742be00c5bc2e4ba665b696379be8dc2.camel@surriel.com>
Date: Wed, 17 Sep 2025 10:43:53 -0400
From: Rik van Riel <riel@...riel.com>
To: Frank van der Linden <fvdl@...gle.com>, akpm@...ux-foundation.org, 
	muchun.song@...ux.dev, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc: hannes@...xchg.org, david@...hat.com, roman.gushchin@...ux.dev
Subject: Re: [RFC PATCH 08/12] mm/compaction: simplify isolation order
 checks a bit

On Mon, 2025-09-15 at 19:51 +0000, Frank van der Linden wrote:
> The code to isolate pages for migration always checked both
> cc->alloc_contig and skip_isolation_on_order to determine
> whether a page could be isolated for migration.
> 
> Simplify this a little bit by moving the cc->alloc_contig
> check in to skip_isolation_on_order. Also rename alloc_contig
> to migrate_large, since there will be an additional user
> (CMA balancing) of this field soon, not just alloc_contig_range.
> 
> No functional change.
> 
> Signed-off-by: Frank van der Linden <fvdl@...gle.com>
> 

Acked-by: Rik van Riel <riel@...riel.com>

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