Re: [PATCH v2 7/7] taskstats: Use task_is_in_init_pid_ns()

[Balbir Singh]

On Wed, Dec 08, 2021 at 04:33:20PM +0800, Leo Yan wrote:
> Replace open code with task_is_in_init_pid_ns() for checking root PID
> namespace.
> 
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
> ---
>  kernel/taskstats.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/taskstats.c b/kernel/taskstats.c
> index 2b4898b4752e..f570d8e1f001 100644
> --- a/kernel/taskstats.c
> +++ b/kernel/taskstats.c
> @@ -284,7 +284,7 @@ static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd)
>  	if (current_user_ns() != &init_user_ns)
>  		return -EINVAL;
>  
> -	if (task_active_pid_ns(current) != &init_pid_ns)
> +	if (!task_is_in_init_pid_ns(current))
>  		return -EINVAL;
>  
>  	if (isadd == REGISTER) {
> -- 
> 2.25.1
>

Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>