net/ipv6: Move rcu_read_lock to callers of ip6_rt_cache_alloc
A later patch protects 'from' in rt6_info and this simplifies the locking needed by it. With the move, the fib6_info_hold for the uncached_rt is no longer needed since the rcu_lock is still held. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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