linux-kernel - Re: [patch 6/13] signalfd/timerfd/asyncfd v5

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Message-Id: <1174031223.13341.251.camel@localhost.localdomain>
Date:	Fri, 16 Mar 2007 08:47:03 +0100
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Davide Libenzi <davidel@...ilserver.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch 6/13] signalfd/timerfd/asyncfd v5 - timerfd core ...

On Thu, 2007-03-15 at 16:02 -0700, Davide Libenzi wrote:
> > > +		/*
> > > +		 * When we call this, the initialization must be complete, since
> > > +		 * aino_getfd() will install the fd.
> > > +		 */
> > > +		error = aino_getfd(&ufd, &inode, &file, "[timerfd]",
> > > +				   &timerfd_fops, ctx);
> > > +		if (error)
> > > +			goto err_ctxfree;
> > 
> > Again: Please turn this around. No need to start the timer before we
> > know, that everything works. 
> 
> The timerfd_setup() is not locked, so we need to make sure everything is 
> setup, before advertising the fd (and aino_getfd does that).

Right. Did not think about the bad boys peeking at file descriptors :)

	tglx


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