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From: Linus Torvalds <torvalds@osdl.org>
To: Andries Brouwer <aebr@win.tue.nl>
Cc: Greg KH <greg@kroah.com>, Andrey Borzenkov <arvidjaar@mail.ru>,
	linux-hotplug-devel@lists.sourceforge.net,
	linux-kernel@vger.kernel.org
Subject: Re: removable media revalidation - udev vs. devfs or static /dev
Date: Wed, 7 Jan 2004 19:43:50 -0800 (PST)	[thread overview]
Message-ID: <Pine.LNX.4.58.0401071941390.2131@home.osdl.org> (raw)
In-Reply-To: <20040108043506.A1555@pclin040.win.tue.nl>



On Thu, 8 Jan 2004, Andries Brouwer wrote:
> 
> I am even happy in a somewhat more general situation that you are.
> If the kernel autopartitions (and make recognition of new partitions
> hotplug events so that udev can create the device nodes), all is well.

Yes. We _could_ do that, by just making a "we noticed the disk change" be
a hotplug event. However, I'm loath to do that, because some devices
literally don't even have an easily read disk change signal, so what they
do is

 - assume the disk _always_ changed on open
 - do a quick IO to verify it

and I'd be nervous about that kind of thing resulting in hotplug being 
called constantly if somebody rude just has an endless loop of 
"open()/close()".

		Linus

  reply	other threads:[~2004-01-08  3:44 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-01 20:33 removable media revalidation - udev vs. devfs or static /dev Andrey Borzenkov
2004-01-03  5:58 ` Greg KH
2004-01-03  8:51   ` Andrey Borzenkov
2004-01-03 12:37     ` Andries Brouwer
2004-01-03 12:42       ` Olaf Hering
2004-01-03 16:05         ` Andrey Borzenkov
2004-01-03 17:54           ` Jens Axboe
2004-01-07  9:43             ` Olaf Hering
2004-01-07  9:50               ` Jens Axboe
2004-01-07  9:56                 ` Olaf Hering
2004-01-07  9:59                   ` Jens Axboe
2004-01-07 10:25                     ` Olaf Hering
2004-01-07 10:31                       ` Jens Axboe
2004-01-07 10:47                         ` Andrey Borzenkov
2004-01-07 10:54                           ` Jens Axboe
2004-01-07 17:56                       ` Greg KH
2004-01-30 12:59                     ` Olaf Hering
2004-01-07 11:00                 ` Andrey Borzenkov
2004-01-07 11:05                   ` Jens Axboe
2004-01-07 11:14                     ` Andrey Borzenkov
2004-01-07 11:16                       ` Jens Axboe
2004-01-03 20:51     ` Greg KH
2004-01-07 18:38   ` Linus Torvalds
2004-01-07 18:57     ` Greg KH
2004-01-07 19:23       ` Mika Penttilä
2004-01-07 19:24         ` Greg KH
2004-01-07 19:31           ` Mika Penttilä
2004-01-08  1:38           ` Linus Torvalds
2004-01-07 19:31       ` Linus Torvalds
2004-01-07 19:50         ` Greg KH
2004-01-07 20:25           ` Richard Troth
2004-01-07 20:38             ` Valdis.Kletnieks
2004-01-07 23:34             ` Greg KH
2004-01-08  0:32           ` Martin J. Bligh
2004-01-08  0:41             ` Greg KH
2004-01-08  1:07               ` Martin J. Bligh
2004-01-08  1:15                 ` Greg KH
2004-01-08  1:50                   ` Martin J. Bligh
2004-01-08 18:34                   ` Martin Schlemmer
2004-01-08  1:48           ` Linus Torvalds
2004-01-08 14:06           ` "Andrey Borzenkov" 
2004-01-08  0:42         ` viro
2004-01-08  1:16           ` Greg KH
2004-01-09  3:36       ` Joel Becker
2004-01-09  9:49         ` Gerd Knorr
2004-01-12 17:16           ` Joel Becker
2004-01-12 23:08             ` J.A. Magallon
2004-01-07 20:52     ` Olaf Hering
2004-01-08  2:03       ` Linus Torvalds
2004-01-08  4:16         ` Gene Heskett
2004-01-08  4:23           ` Linus Torvalds
2004-01-08  7:45         ` Olaf Hering
2004-01-08  2:13     ` Andries Brouwer
2004-01-08  2:19       ` Linus Torvalds
2004-01-08  2:49         ` Andries Brouwer
2004-01-08  2:56           ` Linus Torvalds
2004-01-08  3:35             ` Andries Brouwer
2004-01-08  3:43               ` Linus Torvalds [this message]
2004-01-08  8:00                 ` Xavier Bestel
2004-01-09  0:28                 ` Robert Love
2004-01-09  0:52                   ` Linus Torvalds
2004-01-09  1:16                   ` Matt Mackall
2004-01-08 10:32             `  Éric Brunet
2004-01-08  5:19 Iqbal
2004-01-12  9:09 Ling, Xiaofeng
2004-01-12 13:02 Nicolas Mailhot

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