From: David S. Miller <davem@davemloft.net>
Date: Sun, 3 Aug 2008 03:02:43 +0000 (-0700)
Subject: pkt_sched: Use qdisc_lock() on already sampled root qdisc.
X-Git-Tag: v2.6.27-rc2~2^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fb662297b8a4bdadd60371c34b760efca948ebc;p=pandora-kernel.git

pkt_sched: Use qdisc_lock() on already sampled root qdisc.

Based upon a bug report by Jeff Kirsher.

Don't use qdisc_root_lock() in these cases as the root
qdisc could have been changed, and we'd thus lock the
wrong object.

Tested by Emil S Tantilov who confirms that this seems
to fix the problem.

Signed-off-by: David S. Miller <davem@davemloft.net>
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