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Message-ID: <20091217090250.GA4844@elte.hu>
Date:	Thu, 17 Dec 2009 10:02:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Chinner <david@...morbit.com>,
	Badari Pulavarty <pbadari@...ibm.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	Zach Brown <zach.brown@...cle.com>,
	Al Viro <viro@...iv.linux.org.uk>, Alex Elder <aelder@....com>,
	Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <joel.becker@...cle.com>
Subject: -tip: origin tree boot crash


Today's -tip crashes during bootup on one of my testsystems, and i've bisected 
it back to this commit:

| 5fe878ae7f82fbf0830dbfaee4c5ca18f3aee442 is the first bad commit
| commit 5fe878ae7f82fbf0830dbfaee4c5ca18f3aee442
| Author: Christoph Hellwig <hch@....de>
| Date:   Tue Dec 15 16:47:50 2009 -0800
|
|    direct-io: cleanup blockdev_direct_IO locking
|
|    Currently the locking in blockdev_direct_IO is a mess, we have three
|    different locking types and very confusing checks for some of them.  The
|    most complicated one is DIO_OWN_LOCKING for reads, which happens to not
|    actually be used.

I have no bootlog available currently. The kernel config is attached.

I've reverted the patch from -tip for now.

	Ingo

View attachment "config" of type "text/plain" (76467 bytes)

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