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Re: XFS/md/blkdev warning (was Re: Linux 2.6.26-rc2)

To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: XFS/md/blkdev warning (was Re: Linux 2.6.26-rc2)
From: Alistair John Strachan <alistair@xxxxxxxxxxxxx>
Date: Sun, 18 May 2008 00:12:04 +0100
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>, xfs@xxxxxxxxxxx, Neil Brown <neilb@xxxxxxx>, Nick Piggin <npiggin@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <alpine.LFD.1.10.0805171411250.3020@woody.linux-foundation.org>
References: <alpine.LFD.1.10.0805120731480.3188@woody.linux-foundation.org> <200805172109.59244.alistair@devzero.co.uk> <alpine.LFD.1.10.0805171411250.3020@woody.linux-foundation.org>
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On Saturday 17 May 2008 22:17:37 Linus Torvalds wrote:
> Jens, there's been a *lot* of breakage in the block layer. The DMA bounce
> buffer crap, and this looks like the atomic bit setting was broken too.
> Alistair, does the problem go away if you revert both the patch from Neil
> and the original patch that caused the need for that patch to begin with
> (ie commit 75ad23bc0fcb4f992a5d06982bf0857ab1738e9e "block: make queue
> flags non-atomic").

I did a git revert on this and manually fixed up the conflicts; I also 
reverted Neil's patch.

Unfortunately (though the WARNING is still gone) it doesn't fix the hang.

> Jens, Nick, I think that whole series just needs to be undone.
>               Linus


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