fix typo in memory barrier docs

[Paolo 'Blaisorblade' Giarrusso]

From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>

Fix cut'n'paste typo - &a and &b are used in other examples, in this one the doc
uses &u and &v.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Index: linux-2.6.git/Documentation/memory-barriers.txt
===================================================================
--- linux-2.6.git.orig/Documentation/memory-barriers.txt
+++ linux-2.6.git/Documentation/memory-barriers.txt
@@ -1898,7 +1898,7 @@ queue before processing any further requ
 	smp_wmb();
 	<A:modify v=2>	<C:busy>
 			<C:queue v=2>
-	p = &b;		q = p;
+	p = &v;		q = p;
 			<D:request p>
 	<B:modify p=&v>	<D:commit p=&v>
 		  	<D:read p>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/