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Date: Sun, 6 Jul 2008 09:01:38 -0700 From: Arjan van de Ven <arjan@...radead.org> To: Marcin Slusarz <marcin.slusarz@...il.com> Cc: Al Viro <viro@...IV.linux.org.uk>, LKML <linux-kernel@...r.kernel.org>, Frans Pop <elendil@...net.nl>, "Eric W. Biederman" <ebiederm@...ssion.com> Subject: Re: [PATCH] parport/ppdev: fix registration of sysctl entries On Sun, 6 Jul 2008 17:07:02 +0200 Marcin Slusarz <marcin.slusarz@...il.com> wrote: > On Sun, Jul 06, 2008 at 01:11:48AM +0100, Al Viro wrote: > > On Sun, Jul 06, 2008 at 12:51:48AM +0100, Al Viro wrote: > > > > > I don't believe that it's right. Note that if you *do* race > > > there, you are fucked regardless of sysctls - > > > ppdev.c::register_device() racing with itself will do tons of fun > > > things all by itself (starting with two threads allocating > > > different pdev and both setting pp->pdev). > > I wouldn't call it a race - BKL is protecting multiple ioctl calls, > so we won't ever claim the device from two different threads. eh... there's sleeping functions in there.. the BKL doesn't protect you squat ;)( -- If you want to reach me at my work email, use arjan@...ux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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