[PATCH v4 5/5] taskstats: Use task_is_in_init_pid_ns()

[Leo Yan]

Replace open code with task_is_in_init_pid_ns() for checking root PID
namespace.

Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>
---
 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