rcu: Do RCU GP kthread self-wakeup from softirq and interrupt

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / kernel / pid.c

diff --git a/kernel/pid.c b/kernel/pid.c
index 78b3d9f..5fe7cdb 100644 (file)
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -322,8 +322,10 @@ struct pid *alloc_pid(struct pid_namespace *ns)
        }
 
        if (unlikely(is_child_reaper(pid))) {
-               if (pid_ns_prepare_proc(ns))
+               if (pid_ns_prepare_proc(ns)) {
+                       disable_pid_allocation(ns);
                        goto out_free;
+               }
        }
 
        get_pid_ns(ns);
@@ -526,8 +528,11 @@ pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
        if (!ns)
                ns = task_active_pid_ns(current);
        if (likely(pid_alive(task))) {
-               if (type != PIDTYPE_PID)
+               if (type != PIDTYPE_PID) {
+                       if (type == __PIDTYPE_TGID)
+                               type = PIDTYPE_PID;
                        task = task->group_leader;
+               }
                nr = pid_nr_ns(rcu_dereference(task->pids[type].pid), ns);
        }
        rcu_read_unlock();
@@ -536,12 +541,6 @@ pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
 }
 EXPORT_SYMBOL(__task_pid_nr_ns);
 
-pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)
-{
-       return pid_nr_ns(task_tgid(tsk), ns);
-}
-EXPORT_SYMBOL(task_tgid_nr_ns);
-
 struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
 {
        return ns_of_pid(task_pid(tsk));