Lots of OSD dt_object_operations method implementations have _object in the name, but the actual method name does not (e.g. lod_object_write_lock() for the .dt_write_lock() method). This makes it difficult to trace which function is implementing a particular method without first having to jump through the method declaration table.
Since we already know that these functions are operating on objects (by virtue of being in the dt_object_operations table) there is no value in having _object in the function name. Rename the functions to match the method name (e.g. lod_write_lock() for .dt_write_lock()).