Most documentation I've read discusses how to do this with NOR FLASH, I'm wondering is it possible to do with NAND FLASH
?  Is underlying plumbing going to do the job or not?  In other words would the following actually mount an IFS 
programmed at 0x600000 to /ifs2 (noting correct offset and size values coincide with the part)?

mount -tifs -o offset=0x600000,size=0x24000 /dev/mem /ifs2

As seen here:
http://www.qnx.com/developers/docs/qnxcar2/index.jsp?topic=%2Fcom.qnx.doc.neutrino.technotes%2Ftopic%2Fmultiple_Mounting
.html

Thanks.