diff -r 84ef29ccac56 -r 00860d9caf4d src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp
--- a/src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp	Fri Aug 23 18:47:55 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/storage/jfrBuffer.cpp	Sat Aug 24 14:30:27 2019 +0200
@@ -140,10 +140,6 @@
   OrderAccess::release_store(&_identity, (const void*)NULL);
 }
 
-void JfrBuffer::clear_identity() {
-  _identity = NULL;
-}
-
 bool JfrBuffer::acquired_by(const void* id) const {
   return identity() == id;
 }