Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 7 Mar 2003 20:39:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 7 Mar 2003 20:39:50 -0500 Received: from inet-mail2.oracle.com ([148.87.2.202]:19453 "EHLO inet-mail2.oracle.com") by vger.kernel.org with ESMTP id ; Fri, 7 Mar 2003 20:38:47 -0500 Date: Fri, 7 Mar 2003 17:49:11 -0800 From: Joel Becker To: Christoph Hellwig , Andrew Morton , cherry@osdl.org, rddunlap@osdl.org, greg@kroah.com, Andries.Brouwer@cwi.nl, linux-kernel@vger.kernel.org, torvalds@transmeta.com Subject: Re: [PATCH] register_blkdev Message-ID: <20030308014911.GG2835@ca-server1.us.oracle.com> References: <20030307193644.A14196@infradead.org> <20030307123029.2bc91426.akpm@digeo.com> <20030307221217.GB21315@kroah.com> <20030307225517.GF2835@ca-server1.us.oracle.com> <20030307225710.A18005@infradead.org> <20030307151744.73738fdd.rddunlap@osdl.org> <1047080297.10926.180.camel@cherrytest.pdx.osdl.net> <20030307233636.A19260@infradead.org> <20030307154624.12105fa3.akpm@digeo.com> <20030307235454.A19662@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030307235454.A19662@infradead.org> X-Burt-Line: Trees are cool. User-Agent: Mutt/1.5.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1192 Lines: 33 On Fri, Mar 07, 2003 at 11:54:54PM +0000, Christoph Hellwig wrote: > On Fri, Mar 07, 2003 at 03:46:24PM -0800, Andrew Morton wrote: > > Christoph, it would help this discussion very much if you could tell everyone > > how we should set about solving the many-disks problem. In detail. > > Just use blk_register_region() to claim the region you want, you > don't have to care for any major/minor binary. There is not much of > the dev_t space used for block devices at all so there's no problem. There are a couple issues with this. I wasn't aware there were enough free majors to cover systems with 4000 disks. Those systems exist today. They're only going to grow. If you are dynamically building majors, how do you populate /dev? Joel -- Life's Little Instruction Book #24 "Drink champagne for no reason at all." Joel Becker Senior Member of Technical Staff Oracle Corporation E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/