1 files changed, 16 insertions, 15 deletions

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 3e634f2a1083..a886e692ddd0 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -38,19 +38,10 @@ static struct svc_program nfs4_callback_program;
 
 unsigned int nfs_callback_set_tcpport;
 unsigned short nfs_callback_tcpport;
+unsigned short nfs_callback_tcpport6;
 static const int nfs_set_port_min = 0;
 static const int nfs_set_port_max = 65535;
 
-/*
- * If the kernel has IPv6 support available, always listen for
- * both AF_INET and AF_INET6 requests.
- */
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static const sa_family_t        nfs_callback_family = AF_INET6;
-#else
-static const sa_family_t        nfs_callback_family = AF_INET;
-#endif
-
 static int param_set_port(const char *val, struct kernel_param *kp)
 {
         char *endp;
@@ -116,19 +107,29 @@ int nfs_callback_up(void)
         mutex_lock(&nfs_callback_mutex);
         if (nfs_callback_info.users++ || nfs_callback_info.task != NULL)
                 goto out;
-        serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
-                                nfs_callback_family, NULL);
+        serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, NULL);
         ret = -ENOMEM;
         if (!serv)
                 goto out_err;
 
-        ret = svc_create_xprt(serv, "tcp", nfs_callback_set_tcpport,
-                              SVC_SOCK_ANONYMOUS);
+        ret = svc_create_xprt(serv, "tcp", PF_INET,
+                                nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
         if (ret <= 0)
                 goto out_err;
         nfs_callback_tcpport = ret;
         dprintk("NFS: Callback listener port = %u (af %u)\n",
-                        nfs_callback_tcpport, nfs_callback_family);
+                        nfs_callback_tcpport, PF_INET);
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+        ret = svc_create_xprt(serv, "tcp", PF_INET6,
+                                nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
+        if (ret > 0) {
+                nfs_callback_tcpport6 = ret;
+                dprintk("NFS: Callback listener port = %u (af %u)\n",
+                                nfs_callback_tcpport6, PF_INET6);
+        } else if (ret != -EAFNOSUPPORT)
+                goto out_err;
+#endif  /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
 
         nfs_callback_info.rqst = svc_prepare_thread(serv, &serv->sv_pools[0]);
         if (IS_ERR(nfs_callback_info.rqst)) {