int out_update_pack(const struct lu_env *env, struct update_buffer *ubuf,
enum update_type op, const struct lu_fid *fid,
int params_count, __u16 *param_sizes, const void **bufs,
int out_update_pack(const struct lu_env *env, struct update_buffer *ubuf,
enum update_type op, const struct lu_fid *fid,
int params_count, __u16 *param_sizes, const void **bufs,