linux-kernel - Re: devtmpfs [censored] oddities

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Message-ID: <20091217004643.GR14381@ZenIV.linux.org.uk>
Date:	Thu, 17 Dec 2009 00:46:43 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Greg KH <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>
Subject: Re: devtmpfs [censored] oddities

On Wed, Dec 16, 2009 at 04:39:22PM -0800, Greg KH wrote:
> On Wed, Dec 16, 2009 at 08:04:31AM +0000, Al Viro wrote:
> > 	May I respectfully suggest that a blocking operation (such as
> > kstrdup with GFP_KERNEL, or grabbing a mutex, or, say it, pathname resolution)
> > is not quite the thing to do while holding an rwlock?
> > 
> > 	As it is, any device_add() is an embarrassingly obvious deadlock
> > waiting to happen...
> 
> Thomas has posted a patch to fix this now.
> 
> Sorry for not catching it sooner, we should just delete the rwlocks so
> no one tries to ever use it again.

Say again?  Why would we delete rwlocks?

-- 
If you stare into drivers/staging long enough, drivers/staging stares back at
you...
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