linux-kernel - Re: 2.6.20-rc4-mm1 md problem

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Date:	Mon, 15 Jan 2007 09:08:33 +0100
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Andrew Morton <akpm@...l.org>,
	Neil Brown <neilb@....unsw.edu.au>,
	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: 2.6.20-rc4-mm1 md problem

On Mon, 2007-01-15 at 08:17 +0100, Ingo Molnar wrote:
> > Debug plan:
> > - revert md-* patches
> > - binary search
> > 
> > Does someone have a better idea?
> 
> Thomas saw something similar yesterday and he the partial results that 
> git.block (between rc2-mm1 and rc4-mm1) breaks certain disk drivers or 
> filesystems drivers. For me it worked fine, so it must be only on some 
> combinations. The changes to ll_rw_block.c look quite extensive.

Yes. Jens Axboe confirmed yesterday that the plug changes broke RAID.

	tglx
 

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