linux-kernel - Re: 2.6.21-rc4-mm1

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Message-Id: <200703231718.20647.kernel@kolivas.org>
Date:	Fri, 23 Mar 2007 17:18:20 +1100
From:	Con Kolivas <kernel@...ivas.org>
To:	Andy Whitcroft <apw@...dowen.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Steve Fox <drfickle@...ibm.com>,
	"Martin J. Bligh" <mbligh@...igh.org>
Subject: Re: 2.6.21-rc4-mm1

On Friday 23 March 2007 05:17, Andy Whitcroft wrote:
> Ok, I have yet a third x86_64 machine is is blowing up with the latest
> 2.6.21-rc4-mm1+hotfixes+rsdl-0.32 but working with
> 2.6.21-rc4-mm1+hotfixes-RSDL.  I have results on various hotfix levels
> so I have just fired off a set of tests across the affected machines on
> that latest hotfix stack plus the RSDL backout and the results should be
> in in the next hour or two.
>
> I think there is a strong correlation between RSDL and these hangs.  Any
> suggestions as to the next step.

Found a nasty in requeue_task
+	if (list_empty(old_array->queue + old_prio))
+		__clear_bit(old_prio, p->array->prio_bitmap);

see anything wrong there? I do :P

I'll queue that up with the other changes pending and hopefully that will fix 
your bug.

-- 
-ck
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