Re: [PATCH v3 3/8] mm: memcg: account memory used for memcg vmstats and lruvec stats

[Yosry Ahmed <yosryahmed@google.com>]

On Mon, Apr 29, 2024 at 11:06 PM Shakeel Butt <shakeel.butt@linux.dev> wrote:
>
> From: Roman Gushchin <roman.gushchin@linux.dev>
>
> The percpu memory used by memcg's memory statistics is already accounted.
> For consistency, let's enable accounting for vmstats and lruvec stats
> as well.
>
> Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
> Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>

Reviewed-by: Yosry Ahmed <yosryahmed@google.com>

> ---
>  mm/memcontrol.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 7126459ec56a..434cff91b65e 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -5545,8 +5545,8 @@ static int alloc_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
>         if (!pn)
>                 return 1;
>
> -       pn->lruvec_stats = kzalloc_node(sizeof(struct lruvec_stats), GFP_KERNEL,
> -                                       node);
> +       pn->lruvec_stats = kzalloc_node(sizeof(struct lruvec_stats),
> +                                       GFP_KERNEL_ACCOUNT, node);
>         if (!pn->lruvec_stats)
>                 goto fail;
>
> @@ -5617,7 +5617,8 @@ static struct mem_cgroup *mem_cgroup_alloc(struct mem_cgroup *parent)
>                 goto fail;
>         }
>
> -       memcg->vmstats = kzalloc(sizeof(struct memcg_vmstats), GFP_KERNEL);
> +       memcg->vmstats = kzalloc(sizeof(struct memcg_vmstats),
> +                                GFP_KERNEL_ACCOUNT);
>         if (!memcg->vmstats)
>                 goto fail;
>
> --
> 2.43.0
>