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Date: Thu, 28 Jun 2007 15:03:35 +0200 From: Jarek Poplawski <jarkao2@...pl> To: Patrick McHardy <kaber@...sh.net> Cc: David Miller <davem@...emloft.net>, Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org, "bugme-daemon\@kernel-bugs\.osdl\.org" <bugme-daemon@...nel-bugs.osdl.org>, ranko@...dernet.net Subject: Re: [NET]: gen_estimator: fix locking and timer related bugs [Re: [Bugme-new] [Bug 8668] New: HTB Deadlock] On Thu, Jun 28, 2007 at 02:23:36PM +0200, Patrick McHardy wrote: > Jarek Poplawski wrote: > >>@@ -202,7 +201,6 @@ void gen_kill_estimator(struct gnet_stats_basic > >>*bstats, > >> struct gen_estimator *est, **pest; > >> > >> for (idx=0; idx <= EST_MAX_INTERVAL; idx++) { > >>- int killed = 0; > >> pest = &elist[idx].list; > >> while ((est=*pest) != NULL) { > > > >So, maybe this list walking here needs some locking too? > > It depends on whether estimators should be able to rely on > the rtnl in the future or be completely responsible for their > own locking. My patch yesterday was made under the assumption > that they shouldn't rely on external locking, which seemed to > be the right thing for a "generic" implementation. OTOH its > still specific to networking, so relying on the rtnl doesn't > sound too unreasonable too. I'm beginning to thing I made > the wrong choice with my patch. > > I'm busy right now, would you mind looking into a patch that > only deals with the timer races, but still relies on the > rtnl? In that case this patch looks OK & enough. My earlier proposals are only of cosmetical value. Jarek P. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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