linux-kernel - Re: Race free attributes in sysfs

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Message-Id: <200705222243.56007.dtor@insightbb.com>
Date:	Tue, 22 May 2007 22:43:55 -0400
From:	Dmitry Torokhov <dtor@...ightbb.com>
To:	Mark Lord <lkml@....ca>
Cc:	Pierre Ossman <drzeus-list@...eus.cx>, Greg KH <greg@...ah.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Race free attributes in sysfs

On Tuesday 22 May 2007 17:24, Mark Lord wrote:
> Dmitry Torokhov wrote:
> > 1. dev->uevent_suppress = 1;
> > 2. device_register(dev);
> > 3. device_create_file(dev, ...);
> > 4. dev->uevent_suppress = 0;
> > 5. kobject_uevent(&dev->kobj, KOBJ_ADD);
> 
> I don't see how that prevents an already-running udevd
> from seeing the partially filled in /sys/ entry,
> if it were.. say.. already doing a /sys scan,
> or even just during initial startup.

I tought udev relies on uevents and does not hunt through sysfs on
its own...

-- 
Dmitry
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