-int osc_cache_truncate_start(const struct lu_env *env, struct osc_io *oio,
- struct osc_object *obj, __u64 size);
-void osc_cache_truncate_end(const struct lu_env *env, struct osc_io *oio,
- struct osc_object *obj);
+int osc_cache_truncate_start(const struct lu_env *env, struct osc_object *obj,
+ __u64 size, struct osc_extent **extp);
+void osc_cache_truncate_end(const struct lu_env *env, struct osc_extent *ext);