#define OBD_SNAP_MAGIC 0xfffffff3 /* an unlikely block number */
+#ifndef OBD_SNAP_DEVICENAME
+#define OBD_SNAP_DEVICENAME "obdsnap"
+#endif
+
/* ioctls for manipulating snapshots 40 - 60 */
#define OBD_SNAP_SETTABLE _IOWR('f', 40, long)
#define OBD_SNAP_PRINTTABLE _IOWR('f', 41, long)