--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Fri Sep 26 17:48:10 2014 -0400
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp	Thu Oct 09 15:42:23 2014 +0200
@@ -737,6 +737,10 @@
   size_t*    _cursor;
   ChunkArray* _survivor_plab_array;
 
+  // A bounded minimum size of PLABs, should not return too small values since
+  // this will affect the size of the data structures used for parallel young gen rescan
+  size_t plab_sample_minimum_size();
+
   // Support for marking stack overflow handling
   bool take_from_overflow_list(size_t num, CMSMarkStack* to_stack);
   bool par_take_from_overflow_list(size_t num,