fix Christoph's email addresses

There are various email addresses for me throughout the kernel.  Use the
one that will always be valid.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/quicklist.h b/include/linux/quicklist.h
index bd46643..3bdfa70 100644
--- a/include/linux/quicklist.h
+++ b/include/linux/quicklist.h
@@ -5,7 +5,7 @@
  * as needed after allocation when they are freed. Per cpu lists of pages
  * are kept that only contain node local pages.
  *
- * (C) 2007, SGI. Christoph Lameter <clameter@sgi.com>
+ * (C) 2007, SGI. Christoph Lameter <cl@linux.com>
  */
 #include <linux/kernel.h>
 #include <linux/gfp.h>