Well this is interesting:

An ex-Google engineer is developing a new file system for Linux, with the hopes that it can offer a speedier and more advanced way of storing data on servers.

After a number of years of development, the Bcache File System (Bcachefs) “is more or less feature complete — nothing critical should be missing,” wrote project head Kent Overstreet, in an e-mail to the Linux Kernel Mailing List late Thursday.

[PC World: Introducing BCachefs]