diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 51d9645..ace41c5 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -555,6 +555,10 @@
 	unsigned long flags;
 	struct bio_list bl;
 
+	if (unlikely(bio_barrier(bio))) {
+		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+		return 0;
+	}
 
 	/*
 	 * Register the new request and wait if the reconstruction