Re: [PATCH v4 4/4] mm: thp: reparent the split queue during memcg offline
From: Muchun Song
Date: Sat Oct 04 2025 - 03:53:49 EST
> On Oct 4, 2025, at 00:53, Qi Zheng <qi.zheng@xxxxxxxxx> wrote:
>
> From: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
>
> Similar to list_lru, the split queue is relatively independent and does
> not need to be reparented along with objcg and LRU folios (holding
> objcg lock and lru lock). So let's apply the similar mechanism as list_lru
> to reparent the split queue separately when memcg is offine.
>
> This is also a preparation for reparenting LRU folios.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>
Thanks.