Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

[safe/jmp/linux-2.6] / kernel / rcutree_plugin.h

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index cd6047c..1cee04f 100644 (file)
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -370,9 +370,8 @@ static void rcu_preempt_check_callbacks(int cpu)
                rcu_preempt_qs(cpu);
                return;
        }
-       if (per_cpu(rcu_preempt_data, cpu).qs_pending) {
+       if (per_cpu(rcu_preempt_data, cpu).qs_pending)
                t->rcu_read_unlock_special |= RCU_READ_UNLOCK_NEED_QS;
-       }
 }
 
 /*
@@ -476,10 +475,12 @@ static void rcu_print_task_stall(struct rcu_node *rnp)
 
 /*
  * Because there is no preemptable RCU, there can be no readers blocked,
- * so there is no need to check for blocked tasks.
+ * so there is no need to check for blocked tasks.  So check only for
+ * bogus qsmask values.
  */
 static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp)
 {
+       WARN_ON_ONCE(rnp->qsmask);
 }
 
 /*