tree 80d92a8fff5b5ae27ca618f34acf9d696289d6ba
parent f1d3e4dca3f8d4f55656477e83d0afe0ea7cbaed
author Jarek Poplawski <jarkao2@gmail.com> 1231208059 -0800
committer David S. Miller <davem@davemloft.net> 1231208059 -0800

pkt_sched: cls_u32: Fix locking in u32_change()

New nodes are inserted in u32_change() under rtnl_lock() with wmb(),
so without tcf_tree_lock() like in other classifiers (e.g. cls_fw).
This isn't enough without rmb() on the read side, but on the other
hand adding such barriers doesn't give any savings, so the lock is
added instead.

Reported-by: m0sia <m0sia@plotinka.ru>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>