Re: [rcu:dev 119/161] ERROR: "rcu_barrier" [fs/isofs/isofs.ko] undefined!

[Paul E. McKenney]

On Wed, Jul 04, 2018 at 06:20:56AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
> head:   472755d5ff3ee21ad16e0a0a06e087b7569eaffe
> commit: 16bf6b3b61864e444bae5e4a7cf121f777893a8c [119/161] rcu: Express Tiny RCU updates in terms of RCU rather than RCU-sched
> config: um-x86_64_defconfig (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
> reproduce:
>         git checkout 16bf6b3b61864e444bae5e4a7cf121f777893a8c
>         # save the attached .config to linux build tree
>         make ARCH=um SUBARCH=x86_64
> 
> All errors (new ones prefixed by >>):
> 
> >> ERROR: "rcu_barrier" [fs/isofs/isofs.ko] undefined!

Gah!  I forgot to update the EXPORT_SYMBOL_GPL() to match the
function name.  Good catch, will fix, thank you!

							Thanx, Paul