tree 3783b5871680d9cf5712c4aade60fc2e4c8e790f
parent 32e569b7277f13c4b27bb29c761189963e49ce7a
author Pavel Emelyanov <xemul@openvz.org> 1197840674 -0800
committer David S. Miller <davem@davemloft.net> 1201561090 -0800

[IPV4]: Store the net pointer on devinet's ctl tables

Some handers and strategies of devinet sysctl tables need
to know the net to propagate the ctl change to all the
net devices.

I use the (currently unused) extra2 pointer on the tables
to get it.

Holding the reference on the struct net is not possible,
because otherwise we'll get a net->ctl_table->net circular
dependency. But since the ctl tables are unregistered during
the net destruction, this is safe to get it w/o additional
protection.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>