Comment 128 for bug 344878

If you want to use ext4 encryption with a subdirectory of your home directory and don't mind using the e4crypt or fscrypt tools to set it up, you shouldn't run into any real problems. If you want feature parity with how eCryptfs works in Ubuntu (i.e., automatically unlocking your home directory when logging in), I'd wait until 17.10 comes out with full support for that. fscrypt has all the functionality needed to implement unlock-on-login, but until 17.10 you'll have to go through the trouble of setting up PAM and what not yourself.