From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Fri, 25 Feb 2011 19:37:59 +0000 (-0800)
Subject: rcu: call __rcu_read_unlock() in exit_rcu for tree RCU
X-Git-Tag: v3.0-rc1~392^2~51
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=13491a0ee1ef862b6c842132b6eb9c5e721af5ad;p=linux-block.git

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 a21413d0581d..11b27f377b8b 100644
--- 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 */