RAID-6 works! (At least it seems to...)

Well, at least I have a piece of code that passes my relatively simple
functionality tests.  Still, that's news, and this is the first RAID-6
snapshot that isn't *known* to be broken :)

I can at least mount filesystems, read and write data, reboot the
system and have the data still there, with 1 or 2 disks lost, and do a
reconstruction once the drives are added back in.

New development snapshot at:

ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/raid6-20031224-experimental.tar.gz

Please test it out and let me know how badly it sucks :)

At some point I'll try to run some benchmarks.  There is also a lot of
optimization still to be done.

       -hpa

[And again, thanks to Penguin Computing for donating a test system,
without which this would never have happened.]
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
If you send me mail in HTML format I will assume it's spam.
"Unix gives you enough rope to shoot yourself in the foot."
Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
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