linux-kernel - Re: sleeping function called from invalid context at block/cfq-iosched.c (Was: Re: 2.6.21-mm1)

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Date:	Mon, 07 May 2007 22:38:24 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Simon Arlott <simon@...e.lp0.eu>, linux-kernel@...r.kernel.org,
	David Chinner <dgc@....com>
Subject: Re: sleeping function called from invalid context at block/cfq-iosched.c
 (Was: Re: 2.6.21-mm1)

Andrew Morton wrote:
> On Mon, 07 May 2007 21:31:06 -0700 Jeremy Fitzhardinge <jeremy@...p.org> wrote:
>   
>> I've found that XFS+lvm+4k stacks is completely unusable with current
>> kernels.  I get hangs/oopes after ~10mins of work.
>>     
>
> Sounds like this is new behaviour?
>
> I wonder why.  Same compiler version?
>   

I've only recently started using xfs, so I couldn't say if its new
behaviour.  I did notice that it took a week or so for problems to set
in; my theory is that as the filesystem got a bit aged, its
datastructures got a bit more complex, and cause the kernel code to use
more stack.  But that's just a guess.

    J
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