+#define DLM_CALLBACKS_SIZE 6
+
+#define DLM_CB_CAST 0x00000001
+#define DLM_CB_BAST 0x00000002
+#define DLM_CB_SKIP 0x00000004
+
+struct dlm_callback {
+ uint64_t seq;
+ uint32_t flags; /* DLM_CBF_ */
+ int sb_status; /* copy to lksb status */
+ uint8_t sb_flags; /* copy to lksb flags */
+ int8_t mode; /* rq mode of bast, gr mode of cast */
+};
+