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Date: Fri, 21 Feb 2003 08:05:00 +0100 (CET)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Andrew Morton <akpm@digeo.com>, Linus Torvalds <torvalds@transmeta.com>,
       <zwane@holomorphy.com>, <cw@f00f.org>, <linux-kernel@vger.kernel.org>,
       <mbligh@aracnet.com>
Subject: Re: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous
 reboots)
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On Thu, 20 Feb 2003, William Lee Irwin III wrote:

> >> 1: We're calling mmdrop() under spin_lock_irq(&rq->lock).  But mmdrop
> >>    calls vfree(), which calls smp_call_function().  
> 
> On Thu, Feb 20, 2003 at 11:04:41PM +0100, Ingo Molnar wrote:
> > this has been fixed in the -F3 scheduler patch.
> 
> Not quite. It leaks mm's because schedule_tail() isn't cleaning
> up rq->prev_mm.

hm, this i think was a forward-porting oversight. Anyway, now the separate
patch is in, and it's better that way, the fix was unrelated to the main
things -F3 does.

	Ingo

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