making sdirno an int8_t

What issues can people see occuring if sdirno is changed to an int8_t rather
than an int ? I'm running a test cache at home with it and it seems to
be fine, but are there any metadata issues I've missed that would stop
cache migration or log migration?

Adrian

-- 
Adrian Chadd			Build a man a fire, and he's warm for the
<adrian@creative.net.au>	rest of the evening. Set a man on fire and
				he's warm for the rest of his life.