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-rw-r--r--kernel/pid_namespace.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 84591cfeefc1..3cc29b830e9e 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -217,22 +217,15 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns)
/*
* sys_wait4() above can't reap the TASK_DEAD children.
- * Make sure they all go away, see __unhash_process().
+ * Make sure they all go away, see free_pid().
*/
for (;;) {
- bool need_wait = false;
-
- read_lock(&tasklist_lock);
- if (!list_empty(&current->children)) {
- __set_current_state(TASK_UNINTERRUPTIBLE);
- need_wait = true;
- }
- read_unlock(&tasklist_lock);
-
- if (!need_wait)
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ if (pid_ns->nr_hashed == 1)
break;
schedule();
}
+ __set_current_state(TASK_RUNNING);
if (pid_ns->reboot)
current->signal->group_exit_code = pid_ns->reboot;