From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
To: Anthony DiSante <theant@nodivisions.com>,
       linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: uninterruptible sleep lockups
Date: Tue, 22 Feb 2005 14:26:58 +0200
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On Tuesday 22 February 2005 13:16, Anthony DiSante wrote:
> Helge Hafting wrote:
> > The infrastructure for that does not exist, so instead, the "killed" 
> > process remains. Not all of it, but at least the memory pinned down by 
> > the io request.  This overhead is typically small, and the overehad of 
> > adding forced io abort to every driver might
> > be larger than a handful of stuck processes.  It looks ugly, but perhaps 
> > a ps flag that hides the ugly processes is enough.
> 
> I don't care about any overhead associated with stuck processes, nor do I 
> care that they look ugly in the ps output.  What I care about is the fact 
> that at least once a week on multiple systems with different hardware, some 
> HW-related driver/process gets stuck, then immediately cascades its 
> stuckness up to udevd or hald, and then I can't use any of my hardware 
> anymore until I reboot.

This was discussed to death before. There will never be a "D-state" killer. Period.

If you want to get rid of your stuck processes, you need to fix the bug
or at least let lkml people know about it (this was already explained to you!).
--
vda

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