linux-kernel - Re: [PATCHv2 05/14] mm: Move set/clear_compound_head() next to compound

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Message-Id: <16EC6E4A-5CC2-477D-9C33-524BDBB49228@linux.dev>
Date: Mon, 22 Dec 2025 11:06:28 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Kiryl Shutsemau <kas@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 David Hildenbrand <david@...nel.org>,
 Matthew Wilcox <willy@...radead.org>,
 Usama Arif <usamaarif642@...il.com>,
 Frank van der Linden <fvdl@...gle.com>,
 Oscar Salvador <osalvador@...e.de>,
 Mike Rapoport <rppt@...nel.org>,
 Vlastimil Babka <vbabka@...e.cz>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Zi Yan <ziy@...dia.com>,
 Baoquan He <bhe@...hat.com>,
 Michal Hocko <mhocko@...e.com>,
 Johannes Weiner <hannes@...xchg.org>,
 Jonathan Corbet <corbet@....net>,
 kernel-team@...a.com,
 linux-mm@...ck.org,
 linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org
Subject: Re: [PATCHv2 05/14] mm: Move set/clear_compound_head() next to
 compound_head()



> On Dec 18, 2025, at 23:09, Kiryl Shutsemau <kas@...nel.org> wrote:
> 
> Move set_compound_head() and clear_compound_head() to be adjacent to the
> compound_head() function in page-flags.h.
> 
> These functions encode and decode the same compound_info field, so
> keeping them together makes it easier to verify their logic is
> consistent, especially when the encoding changes.
> 
> Signed-off-by: Kiryl Shutsemau <kas@...nel.org>

Reviewed-by: Muchun Song <muchun.song@...ux.dev>

Thanks.