From: YOSHIFUJI Hideaki / 吉藤英明 <redacted>
Date: Wed, 28 Mar 2007 18:16:42 +0900 (JST)

I hoped we could save some memory per fib6_node,
but I'm fine with it.

I know, I did not want to add it either :(

Speaking of which, several of the potential fixes for the rt6_probe()
deadlock require adding even more things to the fib6_node (a linked
list which some workqueue or similar can run, or a timer, etc.).

So, I'm trying to figure out a way to get the rt6_probe() to run
outside of the per-table rwlock without adding more state to
fib6_node.