--- old/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2017-11-28 11:57:04.943761981 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	2017-11-28 11:57:04.689764928 +0100
@@ -1230,7 +1230,7 @@
   const bool do_clear_all_soft_refs = clear_all_soft_refs ||
       collector_policy()->should_clear_all_soft_refs();
 
-  G1FullCollector collector(this, &_full_gc_mem_mgr, explicit_gc, do_clear_all_soft_refs);
+  G1FullCollector collector(this, &_full_gc_memory_manager, explicit_gc, do_clear_all_soft_refs);
   GCTraceTime(Info, gc) tm("Pause Full", NULL, gc_cause(), true);
 
   collector.prepare_collection();
@@ -1527,8 +1527,8 @@
   CollectedHeap(),
   _young_gen_sampling_thread(NULL),
   _collector_policy(collector_policy),
-  _mem_mgr("G1 Young Generation", "end of minor GC"),
-  _full_gc_mem_mgr("G1 Old Generation", "end of major GC"),
+  _memory_manager("G1 Young Generation", "end of minor GC"),
+  _full_gc_memory_manager("G1 Old Generation", "end of major GC"),
   _eden_pool(NULL),
   _survivor_pool(NULL),
   _old_pool(NULL),
@@ -1831,12 +1831,12 @@
   _survivor_pool = new G1SurvivorPool(this);
   _old_pool = new G1OldGenPool(this);
 
-  _full_gc_mem_mgr.add_pool(_eden_pool);
-  _full_gc_mem_mgr.add_pool(_survivor_pool);
-  _full_gc_mem_mgr.add_pool(_old_pool);
+  _full_gc_memory_manager.add_pool(_eden_pool);
+  _full_gc_memory_manager.add_pool(_survivor_pool);
+  _full_gc_memory_manager.add_pool(_old_pool);
 
-  _mem_mgr.add_pool(_eden_pool);
-  _mem_mgr.add_pool(_survivor_pool);
+  _memory_manager.add_pool(_eden_pool);
+  _memory_manager.add_pool(_survivor_pool);
 
   G1StringDedup::initialize();
 
@@ -2971,7 +2971,7 @@
     log_info(gc,task)("Using %u workers of %u for evacuation", active_workers, workers()->total_workers());
 
     TraceCollectorStats tcs(g1mm()->incremental_collection_counters());
-    TraceMemoryManagerStats tms(&_mem_mgr, gc_cause());
+    TraceMemoryManagerStats tms(&_memory_manager, gc_cause());
 
     // If the secondary_free_list is not empty, append it to the
     // free_list. No need to wait for the cleanup operation to finish;
@@ -5388,8 +5388,8 @@
 
 GrowableArray<GCMemoryManager*> G1CollectedHeap::memory_managers() {
   GrowableArray<GCMemoryManager*> memory_managers(2);
-  memory_managers.append(&_mem_mgr);
-  memory_managers.append(&_full_gc_mem_mgr);
+  memory_managers.append(&_memory_manager);
+  memory_managers.append(&_full_gc_memory_manager);
   return memory_managers;
 }