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Date: Sat, 28 Feb 2026 10:58:29 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Leno Hou <lenohou@gmail.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Axel Rasmussen
 <axelrasmussen@google.com>, Yuanchu Xie <yuanchu@google.com>, Wei Xu
 <weixugc@google.com>, Barry Song <21cnbao@gmail.com>, Jialing Wang
 <wjl.linux@gmail.com>, Yafang Shao <laoar.shao@gmail.com>, Yu Zhao
 <yuzhao@google.com>
Subject: Re: [PATCH] mm/mglru: fix cgroup OOM during MGLRU state switching
Message-Id: <20260228105829.984f06aeaf701487036ac992@linux-foundation.org>
In-Reply-To: <20260228161008.707-1-lenohou@gmail.com>
References: <20260228161008.707-1-lenohou@gmail.com>
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On Sun,  1 Mar 2026 00:10:08 +0800 Leno Hou <lenohou@gmail.com> wrote:

> When the Multi-Gen LRU (MGLRU) state is toggled dynamically, a race
> condition exists between the state switching and the memory reclaim
> path. This can lead to unexpected cgroup OOM kills, even when plenty of
> reclaimable memory is available.
> 
> ...
>

Nice description, thanks.  I'll queue this for testing while we await
comments.

> 
> Reproduction script:
> ---

Please avoid using the ^---$ separator in changelogs - it means "end of
changelog text"!

> Signed-off-by: Leno Hou <lenohou@gmail.com>
> 
> ---

Ditto.