Julian Elischer 1d3ab08a56 rewrite rt_check. Ztake into account that whiel teh rtentry is unlocked,
someone else might change it, so after we re-acquire the lock on it,
we need to check it is still valid. People have been panicing in this
function due to soem edge cases which I have hopefully removed.

Reviewed by:	keramida @
Obtained from:	 1 week
2008-09-15 04:14:53 +00:00
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