From: Konstantin Khlebnikov
Date: Sat, 19 Aug 2017 15:37:07 +0300
> This important to call qdisc_tree_reduce_backlog() after changing queue
> length. Parent qdisc should deactivate class in ->qlen_notify() called from
> qdisc_tree_reduce_backlog() but this happens only if qdisc->q.qlen in zero.
>
On Sat, Aug 19, 2017 at 5:37 AM, Konstantin Khlebnikov
wrote:
> This important to call qdisc_tree_reduce_backlog() after changing queue
> length. Parent qdisc should deactivate class in ->qlen_notify() called from
> qdisc_tree_reduce_backlog() but this happens only if qdisc->q.qlen in zero.
Good
I've seen this as loops in hfsc rb-trees and hungs in hfsc_dequeue() ->
rb_first().
Simple debug catched insering already inserted rb-tree nodes and similar mess.
Most likely this could explain warning in hfsc_dequeue()
https://bugzilla.kernel.org/show_bug.cgi?id=109581
On 19.08.2017 15:37, Kon
This important to call qdisc_tree_reduce_backlog() after changing queue
length. Parent qdisc should deactivate class in ->qlen_notify() called from
qdisc_tree_reduce_backlog() but this happens only if qdisc->q.qlen in zero.
Missed class deactivations leads to crashes/warnings at picking packets
fr
