From: Jarek Poplawski <jarkao2@gmail.com>
Date: Wed, 27 Aug 2008 09:25:17 +0000 (-0700)
Subject: pkt_sched: Fix gen_estimator locks
X-Git-Tag: v2.6.27-rc5~8^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6f9b93f1624206c802ac9162c9302edaf59bfd9;p=pandora-kernel.git

pkt_sched: Fix gen_estimator locks

While passing a qdisc root lock to gen_new_estimator() and
gen_replace_estimator() dev could be deactivated or even before
grafting proper root qdisc as qdisc_sleeping (e.g. qdisc_create), so
using qdisc_root_lock() is not enough. This patch adds
qdisc_root_sleeping_lock() for this, plus additional checks, where
necessary.

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

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