int lquota_disk_read(const struct lu_env *, struct dt_object *,
union lquota_id *, struct dt_rec *);
int lquota_disk_declare_write(const struct lu_env *, struct thandle *,
int lquota_disk_read(const struct lu_env *, struct dt_object *,
union lquota_id *, struct dt_rec *);
int lquota_disk_declare_write(const struct lu_env *, struct thandle *,