linux-kernel - Re: 2.6.18-rc5-mm1 + all hotfixes -- INFO: possible recursive locking detected

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Date:	Wed, 6 Sep 2006 15:35:20 -0700
From:	Greg KH <gregkh@...e.de>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Andrew Morton <akpm@...l.org>, Miles Lane <miles.lane@...il.com>,
	linux1394-devel@...ts.sourceforge.net,
	LKML <linux-kernel@...r.kernel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Ben Collins <bcollins@...ntu.com>
Subject: Re: 2.6.18-rc5-mm1 + all hotfixes -- INFO: possible recursive	locking detected

On Wed, Sep 06, 2006 at 09:13:34AM +0200, Stefan Richter wrote:
> Do class->subsys.rwsem, bus->subsys.rwsem, and bus_type.subsys.rwsem
> point to identical or different lock instances?

class->subsys.rwsem is different from the others.  bus->subsys.rwsem and
bus_type.subsys.rwsem are probably the same thing (depending on what
that bus-> pointer is to.)

> Either way, could it hurt to convert nodemgr to uniformly use
> ieee1394_bus_type.subsys.rwsem all over the place?

Probably a good idea.

thanks,

greg k-h
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