--- old/src/hotspot/share/gc/g1/g1ConcurrentMark.hpp	2020-07-07 10:35:52.507093338 +0200
+++ new/src/hotspot/share/gc/g1/g1ConcurrentMark.hpp	2020-07-07 10:35:52.403091504 +0200
@@ -220,8 +220,8 @@
 // roots wrt to the marking. They must be scanned before marking to maintain the
 // SATB invariant.
 // Typically they contain the areas from nTAMS to top of the regions.
-// We could scan and mark through these objects during the initial-mark pause, but for
-// pause time reasons we move this work to the concurrent phase.
+// We could scan and mark through these objects during the concurrent start pause,
+// but for pause time reasons we move this work to the concurrent phase.
 // We need to complete this procedure before the next GC because it might determine
 // that some of these "root objects" are dead, potentially dropping some required
 // references.
@@ -384,7 +384,7 @@
   void clear_statistics(HeapRegion* r);
 
   // Resets the global marking data structures, as well as the
-  // task local ones; should be called during initial mark.
+  // task local ones; should be called during concurrent start.
   void reset();
 
   // Resets all the marking data structures. Called when we have to restart
@@ -435,7 +435,7 @@
 
   // Returns the task with the given id
   G1CMTask* task(uint id) {
-    // During initial mark we use the parallel gc threads to do some work, so
+    // During concurrent start we use the parallel gc threads to do some work, so
     // we can only compare against _max_num_tasks.
     assert(id < _max_num_tasks, "Task id %u not within bounds up to %u", id, _max_num_tasks);
     return _tasks[id];
@@ -541,9 +541,9 @@
   void clear_prev_bitmap(WorkGang* workers);
 
   // These two methods do the work that needs to be done at the start and end of the
-  // initial mark pause.
-  void pre_initial_mark();
-  void post_initial_mark();
+  // concurrent start pause.
+  void pre_concurrent_start();
+  void post_concurrent_start();
 
   // Scan all the root regions and mark everything reachable from
   // them.