[PATCH] pidns: remove the useless function is_container_init

From: Gao feng
Date: Mon Nov 19 2012 - 05:44:39 EST


since commit 1cdcbec1a3372c0c49c59d292e708fd07b509f18,
is_container_init has no used for a long time.

just remove it.

Signed-off-by: Gao feng <gaofeng@xxxxxxxxxxxxxx>
---
include/linux/sched.h | 6 ------
kernel/pid.c | 15 ---------------
2 files changed, 0 insertions(+), 21 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0dd42a0..3fadd26 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1710,12 +1710,6 @@ static inline int is_global_init(struct task_struct *tsk)
return tsk->pid == 1;
}

-/*
- * is_container_init:
- * check whether in the task is init in its own pid namespace.
- */
-extern int is_container_init(struct task_struct *tsk);
-
extern struct pid *cad_pid;

extern void free_task(struct task_struct *tsk);
diff --git a/kernel/pid.c b/kernel/pid.c
index aebd4f5..8ccdf0e 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -81,21 +81,6 @@ struct pid_namespace init_pid_ns = {
};
EXPORT_SYMBOL_GPL(init_pid_ns);

-int is_container_init(struct task_struct *tsk)
-{
- int ret = 0;
- struct pid *pid;
-
- rcu_read_lock();
- pid = task_pid(tsk);
- if (pid != NULL && pid->numbers[pid->level].nr == 1)
- ret = 1;
- rcu_read_unlock();
-
- return ret;
-}
-EXPORT_SYMBOL(is_container_init);
-
/*
* Note: disable interrupts while the pidmap_lock is held as an
* interrupt might come in and do read_lock(&tasklist_lock).
--
1.7.7.6

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