--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp	Thu Sep 11 14:21:24 2014 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp	Mon Sep 15 12:19:31 2014 +0200
@@ -42,7 +42,9 @@
   assert(hr->containing_set() == this, err_msg("Inconsistent containing set for %u", hr->hrm_index()));
   assert(!hr->is_young(), err_msg("Adding young region %u", hr->hrm_index())); // currently we don't use these sets for young regions
   assert(hr->isHumongous() == regions_humongous(), err_msg("Wrong humongous state for region %u and set %s", hr->hrm_index(), name()));
-  assert(hr->is_empty() == regions_empty(), err_msg("Wrong empty state for region %u and set %s", hr->hrm_index(), name()));
+  assert(hr->is_free() == regions_free(), err_msg("Wrong free state for region %u and set %s", hr->hrm_index(), name()));
+  assert(!hr->is_free() || hr->is_empty(), err_msg("Free region %u is not empty for set %s", hr->hrm_index(), name()));
+  assert(!hr->is_empty() || hr->is_free(), err_msg("Empty region %u is not free for set %s", hr->hrm_index(), name()));
   assert(hr->rem_set()->verify_ready_for_par_iteration(), err_msg("Wrong iteration state %u", hr->hrm_index()));
 }
 #endif
@@ -85,16 +87,16 @@
   out->print_cr("Set: %s ("PTR_FORMAT")", name(), this);
   out->print_cr("  Region Assumptions");
   out->print_cr("    humongous         : %s", BOOL_TO_STR(regions_humongous()));
-  out->print_cr("    empty             : %s", BOOL_TO_STR(regions_empty()));
+  out->print_cr("    free              : %s", BOOL_TO_STR(regions_free()));
   out->print_cr("  Attributes");
   out->print_cr("    length            : %14u", length());
   out->print_cr("    total capacity    : "SIZE_FORMAT_W(14)" bytes",
                 total_capacity_bytes());
 }
 
-HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool empty, HRSMtSafeChecker* mt_safety_checker)
+HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool free, HRSMtSafeChecker* mt_safety_checker)
   : _name(name), _verify_in_progress(false),
-    _is_humongous(humongous), _is_empty(empty), _mt_safety_checker(mt_safety_checker),
+    _is_humongous(humongous), _is_free(free), _mt_safety_checker(mt_safety_checker),
     _count()
 { }