Issue #2643: msync() is not called anymore when deallocating an open mmap

object, only munmap().

Misc/NEWS

@@ -58,6 +58,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #2643: msync() is not called anymore when deallocating an open mmap
+  object, only munmap().
+
 - logging: Changed LoggerAdapter implementation internally, to make it
   easier to subclass in a useful way.
 

Modules/mmapmodule.c

@@ -125,7 +125,6 @@ mmap_object_dealloc(mmap_object *m_obj)
     if (m_obj->fd >= 0)
         (void) close(m_obj->fd);
     if (m_obj->data!=NULL) {
-        msync(m_obj->data, m_obj->size, MS_SYNC);
         munmap(m_obj->data, m_obj->size);
     }
 #endif /* UNIX */