diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index b16e710926c1..b8f3ac29e718 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -425,13 +425,28 @@ static bool svc_xprt_reserve_slot(struct svc_rqst *rqstp, struct svc_xprt *xprt)
 	return true;
 }
 
+/*
+ * After a caller releases write-space or a request slot,
+ * re-enqueue the transport only when there is pending
+ * work that a thread could act on. The smp_mb() pairs
+ * with the smp_rmb() in svc_xprt_ready() and orders the
+ * preceding counter update before the flags read so a
+ * concurrent set_bit(XPT_DATA) is visible here.
+ */
+static void svc_xprt_resource_released(struct svc_xprt *xprt)
+{
+	smp_mb();
+	if (READ_ONCE(xprt->xpt_flags) &
+	    (BIT(XPT_DATA) | BIT(XPT_DEFERRED)))
+		svc_xprt_enqueue(xprt);
+}
+
 static void svc_xprt_release_slot(struct svc_rqst *rqstp)
 {
 	struct svc_xprt	*xprt = rqstp->rq_xprt;
 	if (test_and_clear_bit(RQ_DATA, &rqstp->rq_flags)) {
 		atomic_dec(&xprt->xpt_nr_rqsts);
-		smp_wmb(); /* See smp_rmb() in svc_xprt_ready() */
-		svc_xprt_enqueue(xprt);
+		svc_xprt_resource_released(xprt);
 	}
 }
 
@@ -525,10 +540,10 @@ void svc_reserve(struct svc_rqst *rqstp, int space)
 	space += rqstp->rq_res.head[0].iov_len;
 
 	if (xprt && space < rqstp->rq_reserved) {
-		atomic_sub((rqstp->rq_reserved - space), &xprt->xpt_reserved);
+		atomic_sub((rqstp->rq_reserved - space),
+			   &xprt->xpt_reserved);
 		rqstp->rq_reserved = space;
-		smp_wmb(); /* See smp_rmb() in svc_xprt_ready() */
-		svc_xprt_enqueue(xprt);
+		svc_xprt_resource_released(xprt);
 	}
 }
 EXPORT_SYMBOL_GPL(svc_reserve);