linux-kernel - Re: [PATCH] sysfs: use different lockdep subclass for s

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Message-ID: <20070426152221.GB16563@kroah.com>
Date:	Thu, 26 Apr 2007 08:22:21 -0700
From:	Greg KH <greg@...ah.com>
To:	Tejun Heo <htejun@...il.com>
Cc:	Miles Lane <miles.lane@...il.com>, Andrew Morton <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sysfs: use different lockdep subclass for s_active
	deactivation

On Thu, Apr 26, 2007 at 11:50:47PM +0900, Tejun Heo wrote:
> A sysfs node can delete other sysfs files when accessed.  This results
> in recursive s_active locking - read lock for file access, down lock
> of the vicitim for deactivation.  Tell lockdep that it's okay.
> 
> Signed-off-by: Tejun Heo <htejun@...il.com>
> ---
> Miles, please test this patch.  It should remove the lockdep warning.
> Fixes for the other two problems will soon follow.
> 
> Greg, Andrew, after all the fixes are verified, I'll merge the fixes
> into the original patches and resend all the sysfs updates in better
> shape.  Sorry about all the trouble.

Thanks, that will make it easier for me, as I've seen a lot of them go
floating by recently :)

greg k-h
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