#define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
#define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
+#define IOC_MDC_TYPE 'i'
+#define IOC_MDC_GETSTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_mds_md *)
+
#define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */
#define LL_FILE_IGNORE_LOCK 0x00000001