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From: Patrick J. LoPresti on 10 Aug 2010 14:40
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(a)kernel.org>
Signed-off-by: Patrick LoPresti <lopresti(a)gmail.com>

--- 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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