linux-kernel - Re: [PATCH] memcg: decouple memcg_hotplug_cpu_dead from stock

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Message-ID: <7ia41ptz1sa8.fsf@castle.c.googlers.com>
Date: Fri, 11 Apr 2025 00:00:15 +0000
From: Roman Gushchin <roman.gushchin@...ux.dev>
To: Shakeel Butt <shakeel.butt@...ux.dev>
Cc: Andrew Morton <akpm@...ux-foundation.org>,  Johannes Weiner
 <hannes@...xchg.org>,  Michal Hocko <mhocko@...nel.org>,  Muchun Song
 <muchun.song@...ux.dev>,  Yosry Ahmed <yosry.ahmed@...ux.dev>,  Waiman
 Long <llong@...hat.com>,  Vlastimil Babka <vbabka@...e.cz>,
  linux-mm@...ck.org,  cgroups@...r.kernel.org,
  linux-kernel@...r.kernel.org,  Meta kernel team <kernel-team@...a.com>
Subject: Re: [PATCH] memcg: decouple memcg_hotplug_cpu_dead from stock_lock

Shakeel Butt <shakeel.butt@...ux.dev> writes:

> The function memcg_hotplug_cpu_dead works on the stock of a remote dead
> CPU and drain_obj_stock works on the given stock instead of local stock,
> so there is no need to take local stock_lock anymore.
>
> Signed-off-by: Shakeel Butt <shakeel.butt@...ux.dev>

Acked-by: Roman Gushchin <roman.gushchin@...ux.dev>

Thanks!