--- a/src/hotspot/share/gc/g1/g1Allocator.cpp	Thu Apr 25 05:54:54 2019 -0700
+++ b/src/hotspot/share/gc/g1/g1Allocator.cpp	Thu Apr 25 10:56:31 2019 -0400
@@ -196,7 +196,7 @@
                                                                     desired_word_size,
                                                                     actual_word_size);
   if (result == NULL && !survivor_is_full()) {
-    MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
+    MutexLocker x(FreeList_lock, Mutex::_no_safepoint_check_flag);
     result = survivor_gc_alloc_region()->attempt_allocation_locked(min_word_size,
                                                                    desired_word_size,
                                                                    actual_word_size);
@@ -220,7 +220,7 @@
                                                                desired_word_size,
                                                                actual_word_size);
   if (result == NULL && !old_is_full()) {
-    MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
+    MutexLocker x(FreeList_lock, Mutex::_no_safepoint_check_flag);
     result = old_gc_alloc_region()->attempt_allocation_locked(min_word_size,
                                                               desired_word_size,
                                                               actual_word_size);