--- old/src/hotspot/share/gc/g1/g1PageBasedVirtualSpace.hpp	2019-10-15 07:18:35.906092183 -0700
+++ new/src/hotspot/share/gc/g1/g1PageBasedVirtualSpace.hpp	2019-10-15 07:18:35.534092172 -0700
@@ -92,8 +92,6 @@
 
   // Returns the index of the page which contains the given address.
   size_t  addr_to_page_index(char* addr) const;
-  // Returns the address of the given page index.
-  char*  page_start(size_t index) const;
 
   // Is the given page index the last page?
   bool is_last_page(size_t index) const { return index == (_committed.size() - 1); }
@@ -147,6 +145,10 @@
 
   void check_for_contiguity() PRODUCT_RETURN;
 
+  // Returns the address of the given page index.
+  char*  page_start(size_t index) const;
+  size_t page_size() const;
+
   // Debugging
   void print_on(outputStream* out) PRODUCT_RETURN;
   void print();