From: David S. Miller <davem@davemloft.net>
Date: Tue, 10 Jul 2012 14:08:18 +0000 (-0700)
Subject: ipv4: Calling ->cow_metrics() now is a bug.
X-Git-Tag: v3.6-rc1~125^2~251^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=312487313d4f7177cb751830e3d9c218e42ed59e;p=pandora-kernel.git

ipv4: Calling ->cow_metrics() now is a bug.

Nothing every writes to ipv4 metrics any longer.

PMTU is stored in rt->rt_pmtu.

Dynamic TCP metrics are stored in a special TCP metrics cache,
completely outside of the routes.

Therefore ->cow_metrics() can simply nothing more than a WARN_ON
trigger so we can catch anyone who tries to add new writes to
ipv4 route metrics.

Signed-off-by: David S. Miller <davem@davemloft.net>
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