[PATCH 002 of 14] knfsd: Fixing missing 'expkey' support for fsid type 3

[NeilBrown]

From: Frank Filz <ffilzlnx@xxxxxxxxxx>

Type '3' is used for the fsid in filehandles when the device number
of the device holding the filesystem has more than 8 bits in either
major or minor.
Unfortunately expkey_parse doesn't recognise type 3.  Fix this.

(Slighty modified from Frank's original)

Signed-Off-By: Frank Filz <ffilzlnx@xxxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>

### Diffstat output
 ./fs/nfsd/export.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff .prev/fs/nfsd/export.c ./fs/nfsd/export.c
--- .prev/fs/nfsd/export.c	2006-06-27 12:15:18.000000000 +1000
+++ ./fs/nfsd/export.c	2006-06-27 12:15:55.000000000 +1000
@@ -126,7 +126,7 @@ static int expkey_parse(struct cache_det
 	if (*ep)
 		goto out;
 	dprintk("found fsidtype %d\n", fsidtype);
-	if (fsidtype > 2)
+	if (key_len(fsidtype)==0) /* invalid type */
 		goto out;
 	if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
 		goto out;
-
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