--- a/hotspot/src/share/vm/gc/parallel/psParallelCompact.cpp	Mon Mar 07 15:07:58 2016 +0100
+++ b/hotspot/src/share/vm/gc/parallel/psParallelCompact.cpp	Mon Feb 29 15:47:41 2016 +0100
@@ -1484,17 +1484,6 @@
 }
 
 void
-PSParallelCompact::clear_source_region(HeapWord* beg_addr, HeapWord* end_addr)
-{
-  RegionData* const beg_ptr = _summary_data.addr_to_region_ptr(beg_addr);
-  HeapWord* const end_aligned_up = _summary_data.region_align_up(end_addr);
-  RegionData* const end_ptr = _summary_data.addr_to_region_ptr(end_aligned_up);
-  for (RegionData* cur = beg_ptr; cur < end_ptr; ++cur) {
-    cur->set_source_region(0);
-  }
-}
-
-void
 PSParallelCompact::summarize_space(SpaceId id, bool maximum_compaction)
 {
   assert(id < last_space_id, "id out of range");

--- a/hotspot/src/share/vm/gc/parallel/psParallelCompact.hpp	Mon Mar 07 15:07:58 2016 +0100
+++ b/hotspot/src/share/vm/gc/parallel/psParallelCompact.hpp	Mon Feb 29 15:47:41 2016 +0100
@@ -1065,9 +1065,6 @@
   // non-empty.
   static void fill_dense_prefix_end(SpaceId id);
 
-  // Clear the summary data source_region field for the specified addresses.
-  static void clear_source_region(HeapWord* beg_addr, HeapWord* end_addr);
-
   static void summarize_spaces_quick();
   static void summarize_space(SpaceId id, bool maximum_compaction);
   static void summary_phase(ParCompactionManager* cm, bool maximum_compaction);

--- a/hotspot/src/share/vm/utilities/globalDefinitions.hpp	Mon Mar 07 15:07:58 2016 +0100
+++ b/hotspot/src/share/vm/utilities/globalDefinitions.hpp	Mon Feb 29 15:47:41 2016 +0100
@@ -313,7 +313,7 @@
 // ANSI C++ does not allow casting from one pointer type to a function pointer
 // directly without at best a warning. This macro accomplishes it silently
 // In every case that is present at this point the value be cast is a pointer
-// to a C linkage function. In somecase the type used for the cast reflects
+// to a C linkage function. In some case the type used for the cast reflects
 // that linkage and a picky compiler would not complain. In other cases because
 // there is no convenient place to place a typedef with extern C linkage (i.e
 // a platform dependent header file) it doesn't. At this point no compiler seems
@@ -678,7 +678,7 @@
 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; }
 extern BasicType name2type(const char* name);
 
-// Auxilary math routines
+// Auxiliary math routines
 // least common multiple
 extern size_t lcm(size_t a, size_t b);
 
@@ -801,7 +801,7 @@
 
 // TosState describes the top-of-stack state before and after the execution of
 // a bytecode or method. The top-of-stack value may be cached in one or more CPU
-// registers. The TosState corresponds to the 'machine represention' of this cached
+// registers. The TosState corresponds to the 'machine representation' of this cached
 // value. There's 4 states corresponding to the JAVA types int, long, float & double
 // as well as a 5th state in case the top-of-stack value is actually on the top
 // of stack (in memory) and thus not cached. The atos state corresponds to the itos
@@ -876,7 +876,7 @@
 // a transition from one state to another. These extra states makes it possible for the safepoint code to
 // handle certain thread_states without having to suspend the thread - making the safepoint code faster.
 //
-// Given a state, the xxx_trans state can always be found by adding 1.
+// Given a state, the xxxx_trans state can always be found by adding 1.
 //
 enum JavaThreadState {
   _thread_uninitialized     =  0, // should never happen (missing initialization)
@@ -1425,7 +1425,7 @@
 // operations.
 
 // The goal of this code to avoid undefined or implementation-defined
-// behaviour.  The use of an lvalue to reference cast is explicitly
+// behavior.  The use of an lvalue to reference cast is explicitly
 // permitted by Lvalues and rvalues [basic.lval].  [Section 3.10 Para
 // 15 in C++03]
 #define JAVA_INTEGER_OP(OP, NAME, TYPE, UNSIGNED_TYPE)  \