Hi Ed, > I sure could use a bit. Can anyone confirm or deny that those bits > really are unused? This is probably a bad idea, but couldn't you "poison" those bits like the slab debugger does and see if anything changes them? Kirk -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/