+int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len);
+int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len);
+int sattr_cache_get_defaults(const char *const fsname,
+ const char *const pathname, unsigned int *scount,
+ unsigned int *ssize, unsigned int *soffset);