From: Tariq Toukan <tar...@mellanox.com>
Date: Tue, 24 Jul 2018 14:12:20 +0300
> Fix dev_change_tx_queue_len so it rolls back original value
> upon a failure in dev_qdisc_change_tx_queue_len.
> This is already done for notifirers' failures, share the code.
>
> In case of failure in dev_qdisc_change_tx_queue_len, some tx queues
> would still be of the new length, while they should be reverted.
> Currently, the revert is not done, and is marked with a TODO label
> in dev_qdisc_change_tx_queue_len, and should find some nice solution
> to do it.
> Yet it is still better to not apply the newly requested value.
>
> Fixes: 48bfd55e7e41 ("net_sched: plug in qdisc ops change_tx_queue_len")
> Signed-off-by: Tariq Toukan <tar...@mellanox.com>
> Reviewed-by: Eran Ben Elisha <era...@mellanox.com>
> Reported-by: Ran Rozenstein <ra...@mellanox.com>
Applied and queued up for -stable.
