+ int niocount, struct niobuf_local *local);
+ int (*o_enqueue)(struct obd_conn *conn, struct ldlm_namespace *ns,
+ struct ldlm_handle *parent_lock, __u64 *res_id,
+ __u32 type, struct ldlm_extent *, __u32 mode,
+ int *flags, void *data, int datalen,
+ struct ldlm_handle *lockh);
+ int (*o_cancel)(struct obd_conn *, __u32 mode, struct ldlm_handle *);