447 			     int (*callback)(void *callback_context,  in insert_exceptions()  argument
449 			     void *callback_context,  in insert_exceptions()
483 		r = callback(callback_context, e.old_chunk, e.new_chunk);  in insert_exceptions()
492 			   int (*callback)(void *callback_context, chunk_t old,  in read_exceptions()  argument
494 			   void *callback_context)  in read_exceptions()
542 		r = insert_exceptions(ps, area, callback, callback_context,  in read_exceptions()
610 				    int (*callback)(void *callback_context,  in persistent_read_metadata()  argument
612 				    void *callback_context)  in persistent_read_metadata()
669 	r = read_exceptions(ps, callback, callback_context);  in persistent_read_metadata()
700 					void *callback_context)  in persistent_commit_exception()  argument
722 	cb->context = callback_context;  in persistent_commit_exception()