---- linux-2.6.19.2/include/linux/stddef.h.old 2007-02-14 03:34:54.861805424 +0100
-+++ linux-2.6.19.2/include/linux/stddef.h 2007-02-14 03:35:06.331061832 +0100
+diff -urN linux-2.6.21.1.old/include/linux/stddef.h linux-2.6.21.1.dev/include/linux/stddef.h
+--- linux-2.6.21.1.old/include/linux/stddef.h 2007-04-27 23:49:26.000000000 +0200
++++ linux-2.6.21.1.dev/include/linux/stddef.h 2007-05-26 21:29:46.108898864 +0200