Re: [PATCH] mm: memcg-v1: account vmpressure event allocations

[Tao Cui <cui.tao@linux.dev>]

在 2026/7/13 16:55, Guopeng Zhang 写道:
> From: Guopeng Zhang <zhangguopeng@kylinos.cn>
> 
> Commit 72797d218b43 ("mm/memcg: v1: account event registrations and drop
> world-writable cgroup.event_control") accounted cgroup v1 event
> registration allocations with GFP_KERNEL_ACCOUNT, but missed struct
> vmpressure_event.
> 
> Use GFP_KERNEL_ACCOUNT for this allocation as well.
> 
> Fixes: 72797d218b43 ("mm/memcg: v1: account event registrations and drop world-writable cgroup.event_control")
> Signed-off-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
> ---
>  mm/memcontrol-v1.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c
> index e8b6e1560278..f8424ec3734b 100644
> --- a/mm/memcontrol-v1.c
> +++ b/mm/memcontrol-v1.c
> @@ -1721,7 +1721,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg,
>  		mode = ret;
>  	}
>  
> -	ev = kzalloc_obj(*ev);
> +	ev = kzalloc_obj(*ev, GFP_KERNEL_ACCOUNT);
>  	if (!ev) {
>  		ret = -ENOMEM;
>  		goto out;
Acked-by: Tao Cui <cuitao@kylinos.cn>