nfs: Add "lookupcache" to displayed mount options

commit 9b00c64318cc337846a7a08a5678f5f19aeff188 upstream.

Running "cat /proc/mounts" fails to display the "lookupcache" option.
This oversight cost me a bunch of wasted time recently.

The following simple patch fixes it.

Signed-off-by: Patrick LoPresti <lopresti@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f9df16de4a56b84e18ddb3288f9606bd2cd2cd49..6bf11d745a3f5341e6d41aecad2e6f5cac476e2b 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -652,6 +652,13 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
 
        if (nfss->options & NFS_OPTION_FSCACHE)
                seq_printf(m, ",fsc");
+
+       if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) {
+               if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
+                       seq_printf(m, ",lookupcache=none");
+               else
+                       seq_printf(m, ",lookupcache=pos");
+       }
 }
 
 /*