diff -r 0cc4711c2112 -r 6464882498b5 src/hotspot/share/gc/z/zHeap.inline.hpp
--- a/src/hotspot/share/gc/z/zHeap.inline.hpp	Fri Jun 15 13:31:20 2018 +0200
+++ b/src/hotspot/share/gc/z/zHeap.inline.hpp	Fri Jun 15 13:31:27 2018 +0200
@@ -89,6 +89,10 @@
   _object_allocator.undo_alloc_object_for_relocation(page, addr, size);
 }
 
+inline bool ZHeap::is_alloc_stalled() const {
+  return _page_allocator.is_alloc_stalled();
+}
+
 inline void ZHeap::check_out_of_memory() {
   _page_allocator.check_out_of_memory();
 }