diff --git a/libraries/liblthread/rdwr.c b/libraries/liblthread/rdwr.c
index 8de2be407a..51c15e8e30 100644
--- a/libraries/liblthread/rdwr.c
+++ b/libraries/liblthread/rdwr.c
@@ -1,3 +1,10 @@
+/*
+** This basic implementation of Reader/Writer locks does not
+** protect writers from starvation.  That is, if a writer is
+** currently waiting on a reader, any new reader will get
+** the lock before the writer.
+*/
+
 /********************************************************
  * An example source module to accompany...
  *