Chris Mason at Facebook sent in his Btrfs pull request on Friday for the Linux 3.18 kernel.

Notable Btrfs file-system changes for Linux 3.18 include cleaning up and improving the RAID recovery/repair support, fsync fixes, and a variety of other fixes and clean-ups. The rest of the changes are really just across the board while there's around 2,000 lines of new code.

More Btrfs Linux 3.18 details can be found via the mailing list pull request.