diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index c7c8cde..358a08e 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2535,6 +2535,13 @@
 		return sync_blocks;
 	}
 
+	/*
+	 * If there is non-resync activity waiting for a turn, then let it
+	 * though before starting on this new sync request.
+	 */
+	if (conf->nr_waiting)
+		schedule_timeout_uninterruptible(1);
+
 	/* we are incrementing sector_nr below. To be safe, we check against
 	 * sector_nr + two times RESYNC_SECTORS
 	 */