Index: sys/cam/cam_iosched.c
===================================================================
--- sys/cam/cam_iosched.c
+++ sys/cam/cam_iosched.c
@@ -1342,8 +1342,8 @@
 #endif
 	}
 #ifdef CAM_IOSCHED_DYNAMIC
-	else if (do_dynamic_iosched &&
-	    (bp->bio_cmd == BIO_WRITE || bp->bio_cmd == BIO_FLUSH)) {
+	else if (do_dynamic_iosched && (bp->bio_cmd == BIO_WRITE ||
+	    bp->bio_cmd == BIO_FLUSH || bp->bio_cmd == BIO_ZONE)) {
 		if (cam_iosched_sort_queue(isc))
 			bioq_disksort(&isc->write_queue, bp);
 		else