Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 2 Aug 2002 07:43:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 2 Aug 2002 07:43:50 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:65415 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id ; Fri, 2 Aug 2002 07:43:50 -0400 Date: Fri, 2 Aug 2002 13:47:14 +0200 From: Jens Axboe To: Stephen Lord Cc: Linux Kernel Mailing List , Marcin Dalecki Subject: Re: A new ide warning message Message-ID: <20020802114713.GD1055@suse.de> References: <1028288066.1123.5.camel@laptop.americas.sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1028288066.1123.5.camel@laptop.americas.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1154 Lines: 30 On Fri, Aug 02 2002, Stephen Lord wrote: > > In 2.5.30 I started getting these warning messages out ide during > the mount of an XFS filesystem: > > ide-dma: received 1 phys segments, build 2 > > Can anyone translate that into English please. Well I added that message when switching to the 2.5 style request mapping functions, and I think the message is perfectly clear :-). Never the less, it means that a segment that came into the ide layer with an advertised size of 1 segment was returned from blk_rq_map_sg() as having _two_. This can be a problem with dynamically allocated sg table (not that ide uses those, but still). It's a bug and usually a critical one when this happens. I'd be inclined to think that Adam's changes in this path are to blame for this error. Oh, and I'd be _really_ careful if you have trusted data on that drive (surely not when running 2.5 ide on it :-) -- Jens Axboe - 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/