diff -r 3015c564fcbc -r 1e0532a6abff hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp
--- a/hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp	Thu May 27 09:54:07 2010 -0700
+++ b/hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp	Thu May 27 18:01:56 2010 -0700
@@ -761,7 +761,7 @@
 
   if (p != NULL) {
     size_t remainder = s->free_in_words();
-    if (remainder < (size_t)oopDesc::header_size() && remainder > 0) {
+    if (remainder < CollectedHeap::min_fill_size() && remainder > 0) {
       s->set_top(s->top() - size);
       p = NULL;
     }
@@ -803,7 +803,7 @@
   HeapWord *p = s->cas_allocate(size);
   if (p != NULL) {
     size_t remainder = pointer_delta(s->end(), p + size);
-    if (remainder < (size_t)oopDesc::header_size() && remainder > 0) {
+    if (remainder < CollectedHeap::min_fill_size() && remainder > 0) {
       if (s->cas_deallocate(p, size)) {
         // We were the last to allocate and created a fragment less than
         // a minimal object.