linux-kernel - Re: [fixed] [patch] Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+

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Message-ID: <Pine.LNX.4.64.0806040052270.3474@wrl-59.cs.helsinki.fi>
Date:	Wed, 4 Jun 2008 01:01:25 +0300 (EEST)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	Patrick McManus <mcmanus@...ksong.com>
Subject: Re: [fixed] [patch] Re: [bug] stuck localhost TCP connections,
 v2.6.26-rc3+

On Wed, 4 Jun 2008, Ilpo Järvinen wrote:

> ...I couldn't immediately find anything obviously wrong with those changes 
> but the patch below might be worth of a try (without the revert of 
> course). If it ever spits out that WARN_ON for you, we were playing with 
> fire too much and it's better to return on the safe side there...


> [PATCH] tcp DEFER_ACCEPT: see if header prediction got turned on
> 
> If header prediction is turned on under some circumstances,
> DA can deadlock though I have great trouble in figuring out

...Nah, keepalive timer would then eventually kill it then, so no
deadlock seems possible through that one.

-- 
 i.