Date:   Tue, 14 Dec 2021 16:56:31 +1100
From:   Balbir Singh <bsingharora@gmail.com>
To:     Leo Yan <leo.yan@linaro.org>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Leon Romanovsky <leon@kernel.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Mike Leach <mike.leach@linaro.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jan Harkes <jaharkes@cs.cmu.edu>, coda@cs.cmu.edu,
        Paul Moore <paul@paul-moore.com>,
        Eric Paris <eparis@redhat.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, coresight@lists.linaro.org,
        linux-arm-kernel@lists.infradead.org, codalist@coda.cs.cmu.edu,
        linux-audit@redhat.com
Subject: Re: [PATCH v2 7/7] taskstats: Use task_is_in_init_pid_ns()
Message-ID: <YbgyD6cK/ZkMPCDb@balbir-desktop>
References: <20211208083320.472503-1-leo.yan@linaro.org>
 <20211208083320.472503-8-leo.yan@linaro.org>
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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@linaro.org>
> ---
>  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@gmail.com>