Comment 7 for bug 1498633

This change is now in Linus's 4.4rc4 tree:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0208e951d55c435137543e12d7ee795c3784713a

Which means it will make it into Xenial, and could be cherry picked into the Xenial 4.3 branch in the mean time.