diff -r ae163b62b9ac -r 7d4376f8560e hotspot/src/share/vm/gc_implementation/g1/heapRegionType.hpp
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionType.hpp	Thu Sep 11 17:13:30 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionType.hpp	Tue Sep 23 11:43:24 2014 +0200
@@ -49,22 +49,22 @@
   // 0001 1 [ 3] Survivor
   //
   // 0010 0      Humongous Mask
-  // 0010 0 [ 4] Humongous Starts
-  // 0010 1 [ 5] Humongous Continues
+  // 0010 0 [ 4] Starts Humongous
+  // 0010 1 [ 5] Continues Humongous
   //
   // 01000 [ 8] Old
   typedef enum {
-    FreeTag       = 0,
+    FreeTag               = 0,
 
-    YoungMask     = 2,
-    EdenTag       = YoungMask,
-    SurvTag       = YoungMask + 1,
+    YoungMask             = 2,
+    EdenTag               = YoungMask,
+    SurvTag               = YoungMask + 1,
 
-    HumMask       = 4,
-    HumStartsTag  = HumMask,
-    HumContTag    = HumMask + 1,
+    HumongousMask         = 4,
+    StartsHumongousTag    = HumongousMask,
+    ContinuesHumongousTag = HumongousMask + 1,
 
-    OldTag        = 8
+    OldTag                = 8
   } Tag;
 
   volatile Tag _tag;
@@ -104,9 +104,9 @@
   bool is_eden()     const { return get() == EdenTag;  }
   bool is_survivor() const { return get() == SurvTag;  }
 
-  bool is_humongous()           const { return (get() & HumMask) != 0; }
-  bool is_starts_humongous()    const { return get() == HumStartsTag;  }
-  bool is_continues_humongous() const { return get() == HumContTag;    }
+  bool is_humongous()           const { return (get() & HumongousMask) != 0;   }
+  bool is_starts_humongous()    const { return get() == StartsHumongousTag;    }
+  bool is_continues_humongous() const { return get() == ContinuesHumongousTag; }
 
   bool is_old() const { return get() == OldTag; }
 
@@ -118,8 +118,8 @@
   void set_eden_pre_gc() { set_from(EdenTag, SurvTag); }
   void set_survivor()    { set_from(SurvTag, FreeTag); }
 
-  void set_starts_humongous()    { set_from(HumStartsTag, FreeTag); }
-  void set_continues_humongous() { set_from(HumContTag,   FreeTag); }
+  void set_starts_humongous()    { set_from(StartsHumongousTag,    FreeTag); }
+  void set_continues_humongous() { set_from(ContinuesHumongousTag, FreeTag); }
 
   void set_old() { set(OldTag); }