Are these books outdated?

[Aleksander Alekseev]

Hello

I'm a full-time *nix C developer. I have a pretty good idea how
operating systems work. Still I would like learn more about Linux
internals in particular, write a few device drivers, maybe some
patches to kernel itself, etc. Here are a few books I've found:

* Linux Kernel Development, 3rd Edition (2010)
* Understanding the Linux Kernel, 3rd Edition (2005)
* Linux Device Drivers, 3rd Edition (2005)

Could you tell me please, are these books considered worth reading in
year 2016 or they are completely out of date? Perhaps there are some
newer books and/or tutorials you could recommend?

-- 
Best regards,
Aleksander Alekseev