rcu: call __rcu_read_unlock() in exit_rcu for tree RCU

Using __rcu_read_lock() in place of rcu_read_lock() leaves any debug
state as it really should be, namely with the lock still held.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index a21413d0581dbc5ef78807d8c63a31b420e4832e..11b27f377b8ba4245778993b64ae75ea6999b124 100644 (file)
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -858,7 +858,7 @@ void exit_rcu(void)
        if (t->rcu_read_lock_nesting == 0)
                return;
        t->rcu_read_lock_nesting = 1;
-       rcu_read_unlock();
+       __rcu_read_unlock();
 }
 
 #else /* #ifdef CONFIG_TREE_PREEMPT_RCU */