Re: [PATCH RFC 06/28] mm: thp: introduce folio_split_queue_lock and its variants

[Johannes Weiner]

On Tue, Apr 15, 2025 at 10:45:10AM +0800, Muchun Song wrote:
> 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@xxxxxxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>