From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266269AbUAIA3K (ORCPT ); Thu, 8 Jan 2004 19:29:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266310AbUAIA3K (ORCPT ); Thu, 8 Jan 2004 19:29:10 -0500 Received: from [130.57.169.10] ([130.57.169.10]:23688 "EHLO peabody.ximian.com") by vger.kernel.org with ESMTP id S266269AbUAIA3H (ORCPT ); Thu, 8 Jan 2004 19:29:07 -0500 Subject: Re: removable media revalidation - udev vs. devfs or static /dev From: Robert Love To: Linus Torvalds Cc: Andries Brouwer , Greg KH , Andrey Borzenkov , linux-hotplug-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org In-Reply-To: References: <200401012333.04930.arvidjaar@mail.ru> <20040103055847.GC5306@kroah.com> <20040108031357.A1396@pclin040.win.tue.nl> <20040108034906.A1409@pclin040.win.tue.nl> <20040108043506.A1555@pclin040.win.tue.nl> Content-Type: text/plain Message-Id: <1073608126.1228.16.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-8) Date: Thu, 08 Jan 2004 19:28:47 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2004-01-07 at 22:43, Linus Torvalds wrote: > 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 I like the idea of a hotplug event on media change (basically, a hotplug event for partitions). And, in fact, I am loath not to do it. The current direction with the kernel and udev is letting us move _away_ from polling. Projects such as HAL are helping to finally integrate hardware management throughout the system. But HAL is going to be very confused by some of the alternative solutions for partitions: requiring that all of the partition device nodes preexist is going to really complicate things, and I really do not want to have to poll on all of them in order for HAL to have an idea of what partitions are valid. But I hear you loud and clear about dumb devices that cannot detect media change. They pose a problem. I want a proper solution, too... ideas? Robert Love