--- a/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.hpp	Mon Nov 30 10:09:01 2015 +0300
+++ b/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.hpp	Thu Nov 26 13:13:03 2015 +0100
@@ -729,6 +729,11 @@
   // (should not be called directly).
   void add_region_to_incremental_cset_common(HeapRegion* hr);
 
+  // Set the state to start a concurrent marking cycle and clear
+  // _initiate_conc_mark_if_possible because it has now been
+  // acted on.
+  void initiate_conc_mark();
+
 public:
   // Add hr to the LHS of the incremental collection set.
   void add_region_to_incremental_cset_lhs(HeapRegion* hr);