linux-kernel - Re: [RFC PATCH] memcontrol: Wait for draining of remote stocks to avoid OOM when charging

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Message-ID: <hpheex5rheykebhbh4qjqy4jirnrpqvnfahr75cn6p6ob6lo2x@mpdv2yrht2o4>
Date: Thu, 12 Jun 2025 13:37:39 +0200
From: Michal Koutný <mkoutny@...e.com>
To: cgroups@...r.kernel.org, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org
Cc: Martin Doucha <mdoucha@...e.cz>, Johannes Weiner <hannes@...xchg.org>, 
	Michal Hocko <mhocko@...nel.org>, Roman Gushchin <roman.gushchin@...ux.dev>, 
	Shakeel Butt <shakeel.butt@...ux.dev>, Muchun Song <muchun.song@...ux.dev>, 
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH] memcontrol: Wait for draining of remote stocks to
 avoid OOM when charging

On Fri, May 30, 2025 at 05:18:57PM +0200, Michal Koutný <mkoutny@...e.com> wrote:
> 2) It requires specific scheduling over CPUs, so it may not be so common
>    and severe in practice.

This means in practice, there'd be likely a _different_ running memcg on
other CPUs and that would implicitly flush those stocks. I'm concluding
there's no big issue to fix.

Michal

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