Are these books outdated?

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Edition (2005) Could you tell me please, are these books considered worth reading in year 2016 or they are completely out of date?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