64-bit version of the Plan 9 standalone file server
adapted to 64-bit file sizes, offsets and block numbers.
It also includes larger file name components (max. of 55 rather than 27 bytes),
Intel gigabit Ethernet driver,
better IDE disk support using DMA and RWM if available,
file truncation via wstat,
automatic shutdown if an APC UPS warns of low power (courtesy Nigel Roles).
It lacks support for the DMTMP bit.
Note too that this kernel can be built as a 32-bit fs kernel, for
compatibility with existing on-disk file systems. Thus one could use
it just to pick up the other improvements.
This kernel was folded into /sys/src/fs in the main distribution (17 Feb 2006),
then moved to user mode, as cwfs(4).