diff -r 05a408cbd945 -r d58e1a447d2b src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp
--- a/src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp	Tue May 28 06:42:32 2019 -0400
+++ b/src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp	Tue May 28 13:28:48 2019 +0200
@@ -132,10 +132,6 @@
   OrderAccess::release_store(&_identity, (const void*)NULL);
 }
 
-void JfrBuffer::clear_identity() {
-  _identity = NULL;
-}
-
 bool JfrBuffer::acquired_by(const void* id) const {
   return identity() == id;
 }