tree 64992521a7fa74c04eff45fffc88dd56dfb10ba7
parent b26ddd813031666293c95e84c997eb8b1f97bd38
author Eric Dumazet <edumazet@google.com> 1351463603 +0000
committer David S. Miller <davem@davemloft.net> 1351969144 -0400

ipv4: avoid a test in ip_rt_put()

We can save a test in ip_rt_put(), considering dst_release() accepts
a NULL parameter, and dst is first element in rtable.

Add a BUILD_BUG_ON() to catch any change that could break this
assertion.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Cong Wang <amwang@redhat.com>
Acked-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>