Phoronix: DIRFS: A DragonFlyBSD File-System For Virtual Kernels

DIRFS was committed today as a new file-system for the DragonFlyBSD operating system. DIRFS isn't some competitor to the distribution's HAMMER (or the forthcoming HAMMER2 file-system), but it's a simple file-system implementation designed for use by the operating system's virtual kernel architecture...

http://www.phoronix.com/vr.php?view=MTQ1Mzc