diff -r 622c26f0673f -r 5d20b085d893 src/hotspot/share/runtime/mutexLocker.cpp
--- a/src/hotspot/share/runtime/mutexLocker.cpp	Fri Feb 15 07:53:03 2019 -0500
+++ b/src/hotspot/share/runtime/mutexLocker.cpp	Fri Feb 15 14:15:10 2019 +0100
@@ -72,7 +72,6 @@
 Mutex*   RetData_lock                 = NULL;
 Monitor* VMOperationQueue_lock        = NULL;
 Monitor* VMOperationRequest_lock      = NULL;
-Monitor* Safepoint_lock               = NULL;
 Monitor* SerializePage_lock           = NULL;
 Monitor* Threads_lock                 = NULL;
 Mutex*   NonJavaThreadsList_lock      = NULL;
@@ -275,8 +274,6 @@
   // CMS_bitMap_lock                          leaf 1
   // CMS_freeList_lock                        leaf 2
 
-  def(Safepoint_lock               , PaddedMonitor, safepoint,   true,  Monitor::_safepoint_check_sometimes);  // locks SnippetCache_lock/Threads_lock
-
   def(Threads_lock                 , PaddedMonitor, barrier,     true,  Monitor::_safepoint_check_sometimes);
   def(NonJavaThreadsList_lock      , PaddedMutex,   leaf,        true,  Monitor::_safepoint_check_never);