Re: [PATCH v2 1/7] memcg: memcg_rstat_updated re-entrant safe against irqs

[Alexei Starovoitov]

On Thu, May 15, 2025 at 5:47 AM Lorenzo Stoakes
<lorenzo.stoakes@xxxxxxxxxx> wrote:
>
> ----8<----
> From 28275e5d054506746d310cf5ebd1fafdb0881dba Mon Sep 17 00:00:00 2001
> From: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
> Date: Thu, 15 May 2025 13:43:46 +0100
> Subject: [PATCH] fix
>
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
> ---
>  mm/memcontrol.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 2464a58fbf17..40fcc2259e5f 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -3697,7 +3697,8 @@ static void mem_cgroup_free(struct mem_cgroup *memcg)
>
>  static struct mem_cgroup *mem_cgroup_alloc(struct mem_cgroup *parent)
>  {
> -       struct memcg_vmstats_percpu *statc, __percpu *pstatc_pcpu;
> +       struct memcg_vmstats_percpu *statc;
> +       struct memcg_vmstats_percpu __percpu *pstatc_pcpu;
>         struct mem_cgroup *memcg;
>         int node, cpu;
>         int __maybe_unused i;
> --
> 2.49.0

Tested-by: Alexei Starovoitov <ast@xxxxxxxxxx>

Andrew,

Please pick up Lorenzo's fix into mm-new.