Re: [PATCH] mm: memcg-v1: make mem_cgroup_oom_notify_cb() return void

SJ Park <[email protected]> Mon, 13 Jul 2026 17:27:37 -0700

Newsgroups	org.kernel.vger.cgroups,org.kernel.vger.linux-kernel,org.kvack.linux-mm
Message-ID	<[email protected]>

On Mon, 13 Jul 2026 17:37:37 +0800 Guopeng Zhang <[email protected]> wrote:

> From: Guopeng Zhang <[email protected]>
> 
> Commit 7d74b06f240f ("memcg: use for_each_mem_cgroup") replaced the
> mem_cgroup_walk_tree() call in mem_cgroup_oom_notify() with
> for_each_mem_cgroup_tree(), but left mem_cgroup_oom_notify_cb() with the
> int return type required by the old callback interface.
> 
> The function now has a single direct caller and no failure path. Make it
> return void.

Makes sense to me.

> 
> Signed-off-by: Guopeng Zhang <[email protected]>

Reviewed-by: SJ Park <[email protected]>


Thanks,
SJ

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