*** kernel/workqueue.c	2015-08-31 03:34:09.000000000 +0900
--- kernel/workqueue.c	2015-09-02 01:58:46.996412743 +0900
***************
*** 2614,2620 ****
  out_unlock:
  	mutex_unlock(&wq->mutex);
  }
! EXPORT_SYMBOL_GPL(flush_workqueue);

  /**
   * drain_workqueue - drain a workqueue
--- 2614,2620 ----
  out_unlock:
  	mutex_unlock(&wq->mutex);
  }
! EXPORT_SYMBOL(flush_workqueue);

  /**
   * drain_workqueue - drain a workqueue