NFSv4: Ensure that /proc/self/mountinfo displays the minor version number

Currently, we do not display the minor version mount parameter in the
/proc mount info.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 04214fc..f9df16d 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -570,6 +570,22 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
        nfs_show_mountd_netid(m, nfss, showdefaults);
 }
 
+#ifdef CONFIG_NFS_V4
+static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
+                                   int showdefaults)
+{
+       struct nfs_client *clp = nfss->nfs_client;
+
+       seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr);
+       seq_printf(m, ",minorversion=%u", clp->cl_minorversion);
+}
+#else
+static void nfs_show_nfsv4_options(struct seq_file *m, struct nfs_server *nfss,
+                                   int showdefaults)
+{
+}
+#endif
+
 /*
  * Describe the mount options in force on this server representation
  */
@@ -631,11 +647,9 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
 
        if (version != 4)
                nfs_show_mountd_options(m, nfss, showdefaults);
+       else
+               nfs_show_nfsv4_options(m, nfss, showdefaults);
 
-#ifdef CONFIG_NFS_V4
-       if (clp->rpc_ops->version == 4)
-               seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr);
-#endif
        if (nfss->options & NFS_OPTION_FSCACHE)
                seq_printf(m, ",fsc");
 }