--- old/src/hotspot/share/runtime/mutexLocker.hpp	2019-05-03 10:53:57.108438532 +0200
+++ new/src/hotspot/share/runtime/mutexLocker.hpp	2019-05-03 10:53:56.643422723 +0200
@@ -32,7 +32,7 @@
 // Mutexes used in the VM.
 
 extern Mutex*   Patching_lock;                   // a lock used to guard code patching of compiled code
-extern Mutex*   CompiledMethod_lock;
+extern Mutex*   CompiledMethod_lock;             // a lock used to guard a compiled method
 extern Monitor* SystemDictionary_lock;           // a lock on the system dictionary
 extern Mutex*   ProtectionDomainSet_lock;        // a lock on the pd_set list in the system dictionary
 extern Mutex*   SharedDictionary_lock;           // a lock on the CDS shared dictionary