[PATCH] Update RCU documentation

Update the RCU documentation to allow for the new synchronize_rcu() and
synchronize_sched() primitives.  Fix a few other nits as well.

Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/Documentation/RCU/rcu.txt b/Documentation/RCU/rcu.txt
index 7e0c2ab..eb44400 100644
--- a/Documentation/RCU/rcu.txt
+++ b/Documentation/RCU/rcu.txt
@@ -43,7 +43,9 @@
 
 o	How can I see where RCU is currently used in the Linux kernel?
 
-	Search for "rcu_read_lock", "call_rcu", and "synchronize_kernel".
+	Search for "rcu_read_lock", "rcu_read_unlock", "call_rcu",
+	"rcu_read_lock_bh", "rcu_read_unlock_bh", "call_rcu_bh",
+	"synchronize_rcu", and "synchronize_net".
 
 o	What guidelines should I follow when writing code that uses RCU?