[PATCH] nfs: Add "lookupcache" to displayed mount options

[Patrick J. LoPresti]

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.

CC: stable <stable@xxxxxxxxxx>
Signed-off-by: Patrick LoPresti <lopresti@xxxxxxxxx>

--- linux-2.6.35/fs/nfs/super.c~	2010-08-01 15:11:14.000000000 -0700
+++ linux-2.6.35/fs/nfs/super.c	2010-08-10 11:08:22.000000000 -0700
@@ -652,6 +652,13 @@ static void nfs_show_mount_options(struc
 
 	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");
+	}
 }
 
 /*
--
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