How To F2FS Filesystem Encryption?

I read that the f2fs format is good for SSD storage so I formatted one of my drives with it. I also read in some kernel notes that encryption was added for it but there's no documentation to speak of. I typically prefer whole disk encryption. I'm not sure if that's possible for f2fs. I'm wondering if anyone knows any steps in which I might be able to encrypt an f2fs drive. I know it's done on Android for their full drive encryption (I'm running Ubuntu). Is LUKS filesystem agnostic? I don't think so. Any encryption would be good. No docs == no good. Here's a reference of kernel updates: http://lkml.iu.edu/hypermail/linux/kernel/1506.3/00598.html