From: Eric Dumazet <edumazet@google.com>
Date: Sun, 28 Oct 2012 22:33:23 +0000 (+0000)
Subject: ipv4: avoid a test in ip_rt_put()
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~461
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6da025fa23bb10c82f80de319c837ed2b02306e4;p=pandora-kernel.git

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>
---

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