Re: [PATCH] ipv4: fix the rcu race between free_fib_info and ip_route_output_slow

On Wed, 2012-05-23 at 09:39 +0200, Eric Dumazet wrote:

spinlock is needed mainly because of ip_fib_check_default(), but this
could be changed to use RCU as well. 

(readers use RCU, writers already hold RTNL -> no more fib_info_lock )

Since its not a fast path and hash table can be resized, its probably
not worth the pain.