return 0;
 }
 
-#if 0
-static inline int obd_register_page_removal_cb(struct obd_export *exp,
-                                              obd_page_removal_cb_t cb,
-                                              obd_pin_extent_cb pin_cb)
-{
-       int rc;
-
-       OBD_CHECK_DT_OP(exp->exp_obd, register_page_removal_cb, 0);
-       OBD_COUNTER_INCREMENT(exp->exp_obd, register_page_removal_cb);
-
-       rc = OBP(exp->exp_obd, register_page_removal_cb)(exp, cb, pin_cb);
-       return rc;
-}
-
-static inline int obd_unregister_page_removal_cb(struct obd_export *exp,
-                                                obd_page_removal_cb_t cb)
-{
-       int rc;
-
-       OBD_CHECK_DT_OP(exp->exp_obd, unregister_page_removal_cb, 0);
-       OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_page_removal_cb);
-
-       rc = OBP(exp->exp_obd, unregister_page_removal_cb)(exp, cb);
-       return rc;
-}
-
-static inline int obd_register_lock_cancel_cb(struct obd_export *exp,
-                                             obd_lock_cancel_cb cb)
-{
-       int rc;
-
-       OBD_CHECK_DT_OP(exp->exp_obd, register_lock_cancel_cb, 0);
-       OBD_COUNTER_INCREMENT(exp->exp_obd, register_lock_cancel_cb);
-
-       rc = OBP(exp->exp_obd, register_lock_cancel_cb)(exp, cb);
-       return rc;
-}
-
-static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
-                                                obd_lock_cancel_cb cb)
-{
-       int rc;
-
-       OBD_CHECK_DT_OP(exp->exp_obd, unregister_lock_cancel_cb, 0);
-       OBD_COUNTER_INCREMENT(exp->exp_obd, unregister_lock_cancel_cb);
-
-       rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
-       return rc;
-}
-#endif
-
 /* metadata helpers */
 static inline int md_getstatus(struct obd_export *exp, struct lu_fid *fid)
 {