JFS formatted disk auto-mounting

Recently I switched from Raspbmc to XBian. On Raspbmc I've been using a 2TB disk formatted with the JFS filesystem for almost 2 years now without any problems. Unfortunately XBian did not mount my disk automatically, so I looked into fixing that.
Fix proved to be very easy: The JFS filesystem was not added to the FILESYSTEMS line. After adding it, the disk auto-mounted perfectly and has been working great ever since. 

I also took out a redundant "nodiratime", because the "noatime" option implies "nodiratime".