--- old/src/share/vm/gc/g1/g1CollectedHeap.hpp	2015-07-31 14:01:37.963750834 -0400
+++ new/src/share/vm/gc/g1/g1CollectedHeap.hpp	2015-07-31 14:01:37.383717733 -0400
@@ -786,6 +786,12 @@
   // alloc_archive_regions, and after class loading has occurred.
   void fill_archive_regions(MemRegion* range, size_t count);
 
+  // For each of the specified MemRegions, free the containing G1 regions 
+  // which had been allocated by alloc_archive_regions. This should be called
+  // rather than fill_archive_regions at JVM init time if the archive file 
+  // mapping failed.
+  void free_archive_regions(MemRegion* range, size_t count);
+
 protected:
 
   // Shrink the garbage-first heap by at most the given size (in bytes!).