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Message-ID: <835caf4a-0218-4f02-8459-e11757d36e51@redhat.com> Date: Mon, 22 Sep 2025 10:20:28 +0200 From: David Hildenbrand <david@...hat.com> To: Qi Zheng <zhengqi.arch@...edance.com>, hannes@...xchg.org, hughd@...gle.com, mhocko@...e.com, roman.gushchin@...ux.dev, shakeel.butt@...ux.dev, muchun.song@...ux.dev, lorenzo.stoakes@...cle.com, ziy@...dia.com, baolin.wang@...ux.alibaba.com, Liam.Howlett@...cle.com, npache@...hat.com, ryan.roberts@....com, dev.jain@....com, baohua@...nel.org, lance.yang@...ux.dev, akpm@...ux-foundation.org Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, Muchun Song <songmuchun@...edance.com> Subject: Re: [PATCH 2/4] mm: thp: introduce folio_split_queue_lock and its variants On 19.09.25 05:46, Qi Zheng wrote: > From: Muchun Song <songmuchun@...edance.com> > > In future memcg removal, the binding between a folio and a memcg may > change, making the split lock within the memcg unstable when held. > > A new approach is required to reparent the split queue to its parent. This > patch starts introducing a unified way to acquire the split lock for > future work. > > It's a code-only refactoring with no functional changes. > > Signed-off-by: Muchun Song <songmuchun@...edance.com> > Acked-by: Johannes Weiner <hannes@...xchg.org> > Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com> > --- Looks sane, I assume the build issue is easily fixed Acked-by: David Hildenbrand <david@...hat.com> -- Cheers David / dhildenb
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