diff --git a/Documentation/locking/locktorture.txt b/Documentation/locking/locktorture.txt
index 7a72621..be71501 100644
--- a/Documentation/locking/locktorture.txt
+++ b/Documentation/locking/locktorture.txt
@@ -47,6 +47,8 @@
 
 		     o "mutex_lock": mutex_lock() and mutex_unlock() pairs.
 
+		     o "rwsem_lock": read/write down() and up() semaphore pairs.
+
 torture_runnable  Start locktorture at boot time in the case where the
 		  module is built into the kernel, otherwise wait for
 		  torture_runnable to be set via sysfs before starting.