+#define DLM_IFL_OVERLAP_UNLOCK 0x00080000
+#define DLM_IFL_OVERLAP_CANCEL 0x00100000
+#define DLM_IFL_ENDOFLIFE 0x00200000
+#define DLM_IFL_WATCH_TIMEWARN 0x00400000
+#define DLM_IFL_TIMEOUT_CANCEL 0x00800000
+#define DLM_IFL_DEADLOCK_CANCEL 0x01000000