diff --git a/drivers/md/md.h b/drivers/md/md.h
index 6e7e349..c88b047 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -318,6 +318,7 @@
 	struct bio *barrier;
 	atomic_t flush_pending;
 	struct work_struct barrier_work;
+	struct work_struct event_work;	/* used by dm to report failure event */
 };