+ /*
+ * With v4.0 clients, there's little difference in outcome between a
+ * create and check operation, and we can end up calling into this
+ * function multiple times per client (once for each openowner). So,
+ * for v4.0 clients skip upcalling once the client has been recorded
+ * on stable storage.
+ *
+ * For v4.1+ clients, the outcome of the two operations is different,
+ * so we must ensure that we upcall for the create operation. v4.1+
+ * clients call this on RECLAIM_COMPLETE though, so we should only end
+ * up doing a single create upcall per client.
+ */
+ if (clp->cl_minorversion == 0 &&
+ test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return;
+