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Message-Id: <20211205145105.57824-8-leo.yan@linaro.org>
Date:   Sun,  5 Dec 2021 22:51:05 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jan Harkes <jaharkes@...cmu.edu>, coda@...cmu.edu,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Balbir Singh <bsingharora@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, codalist@...a.cs.cmu.edu,
        linux-audit@...hat.com
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v1 7/7] taskstats: Use task_is_in_root_ns()

Replace open coded checking root PID namespace with
task_is_in_root_ns().

Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
 kernel/taskstats.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 2b4898b4752e..c6a19d3911b3 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_root_ns(current))
 		return -EINVAL;
 
 	if (isadd == REGISTER) {
-- 
2.25.1

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