Back in August, a linux-kernel discussion on
removable device filesystems hinted at a new filesystem waiting in the
wings. It now seems clear that said filesystem was the just-announced F2FS, a flash-friendly
filesystem from Samsung. "F2FS is a new file system carefully
designed for the NAND flash memory-based storage devices. We chose a log
structure file system approach, but we tried to adapt it to the new form of
storage." See the associated
documentation file for details on the F2FS on-disk format and how it works.