no-copy mode for ESI fragments had gone lost

src/vdp_pesi.c

@@ -538,7 +538,7 @@ pesi_buf_bytes(struct req *req, enum vdp_action act, void **priv,
 	 * valid. We only do this check once
 	 *
 	 */
-	if ((node->type == T_NEXUS) &&
+	if (VSTAILQ_FIRST(&parent->nexus.children) == NULL &&
 	    (req->objcore->flags & OC_F_FINAL) == 0 &&
 	    req->objcore->stobj->stevedore->methods == &SML_methods) {
 		AZ(parent->nexus.oc);