From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: What to do about the 2TB limit on HDIO_GETGEO ? Date: Tue, 25 Mar 2008 16:22:52 -0700 Message-ID: <20080325232252.GA25338@suse.de> References: <47E90019.3050006@rtr.ca> <47E90458.7030801@zytor.com> <47E9383F.3050908@rtr.ca> <20080325192515.GA24234@suse.de> <20080325123454.4eba7644.randy.dunlap@oracle.com> <47E96263.9000808@zytor.com> <20080325212032.GA24495@suse.de> <47E96E15.7020105@zytor.com> <20080325230009.GA25062@suse.de> <47E9853C.1030506@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx2.suse.de ([195.135.220.15]:34549 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756043AbYCYXXF (ORCPT ); Tue, 25 Mar 2008 19:23:05 -0400 Content-Disposition: inline In-Reply-To: <47E9853C.1030506@zytor.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "H. Peter Anvin" Cc: Randy Dunlap , Mark Lord , Jens Axboe , Jeff Garzik , Tejun Heo , Linus Torvalds , Andrew Morton , Linux Kernel , IDE/ATA development list , linux-scsi On Tue, Mar 25, 2008 at 04:05:32PM -0700, H. Peter Anvin wrote: >> How does this have anything to do with boot times? Do you really have a >> foolish shell script that iteratorates over every single disk in the >> sysfs tree for every disk? What does it do that for? > > Any time you want to get the sysfs information for a filesystem which is > already mounted, that's what you're forced to do. > >> I thought we were talking about 2TB disks here, with a proposed new >> ioctl, not foolishness of boot scripts... > > I pointed out that having a way to map device numbers to sysfs directories > would have the same effect, *and* would be usable for other purposes. I'd > rather see that than a new ioctl, and another, and another... Again, a simple udev rule will give you that today if you really want it... And I think 'udevinfo' can be used to retrieve this information as well. thanks, greg k-h