Thread (209 messages) 209 messages, 10 authors, 2008-09-24

Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2008-08-14 08:33:41

On Thu, Aug 14, 2008 at 08:31:27AM +0000, Jarek Poplawski wrote:
I'm not sure of your point... This patch is only to fix my yesterday's
doubt #1, and it doesn't introduce, I hope, any new live-lock
vulnerabity. So, if you mean doubt #2, there is needed a separate
patch, but I'm not sure there is a need to add a flag. I've thougt
about a counter in a Qdisc for consecutive requeues with
netif_schedule, so we could break after some limit. Of course, your
idea could be simpler and better, but if I could only see some code...
What I mean is the extremely unlikely scenario of net_tx_action
always failing on trylock because dev_deactivate has grabbed the
lock to check whether net_tx_action has completed.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
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