net: Convert ipvs_core_ops
These pernet_operations register and unregister nf hooks, /proc entries, sysctl, percpu statistics. There are several global lists, and the only list modified without exclusive locks is ip_vs_conn_tab in ip_vs_conn_flush(). We iterate the list and force the timers expire at the moment. Since there were possible several timer expirations before this patch, and since they are safe, the patch does not invent new parallelism of their destruction. These pernet_operations look safe to be converted. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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