--- old/src/hotspot/share/runtime/vframe.cpp	2019-12-11 14:56:19.000000000 -0500
+++ new/src/hotspot/share/runtime/vframe.cpp	2019-12-11 14:56:19.000000000 -0500
@@ -122,6 +122,9 @@
   if (mons->is_empty()) return result;
 
   bool found_first_monitor = false;
+  // For all of the javaVFrame::locked_monitors()() call sites, we
+  // are either at a safepoint or the calling thread is operating
+  // on itself so this ObjectMonitorHandle is not strictly necessary.
   ObjectMonitorHandle omh;
   ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor(&omh);
   ObjectMonitor *pending_monitor = NULL;
@@ -235,6 +238,8 @@
           // an inflated monitor that is first on the monitor list in
           // the first frame can block us on a monitor enter.
           markWord mark = monitor->owner()->mark();
+          // The calling thread is operating on itself so this
+          // ObjectMonitorHandle is not strictly necessary.
           ObjectMonitorHandle omh;
           if (mark.has_monitor() &&
               ( // we have marked ourself as pending on this monitor