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pkt_sched: Grab correct lock in notify_and_destroy().

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From: Jarek Poplawski <jarkao2@gmail.com>

When we are destroying non-root qdiscs, we need to lock
the root of the qdisc tree not the the qdisc itself.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarek Poplawski 2008-08-17 22:02:11 -07:00 committed by David S. Miller
parent 4335cd2da1
commit 3a76e3716b
1 changed files with 2 additions and 2 deletions
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4
net/sched/sch_api.c
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@ -638,9 +638,9 @@ static void notify_and_destroy(struct sk_buff *skb, struct nlmsghdr *n, u32 clid
qdisc_notify(skb, n, clid, old, new);
if (old) {
spin_lock_bh(&old->q.lock);
sch_tree_lock(old);
qdisc_destroy(old);
spin_unlock_bh(&old->q.lock);
sch_tree_unlock(old);
}
}