Hi Paul, After merging the rcu tree, today's linux-next build (powerpc allnoconfig) failed like this: include/linux/notifier.h:51:4: warning: its scope is only this definition or declaration, which is probably not what you want In file included from include/linux/memory_hotplug.h:6:0, from include/linux/mmzone.h:790, from include/linux/gfp.h:5, from arch/powerpc/mm/pgtable.c:25: include/linux/notifier.h:51:4: error: 'struct notifier_block' declared inside parameter list [-Werror] unsigned long action, void *data); ^ And many more (most just warnings ...). Presumably caused by commit 44dec3761b63 ("srcu: Isolate srcu sections using CONFIG_SRCU") and reverting that commit makes the messages go away, so I have done that for today. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au