From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: struct request members, etc.. Date: Tue, 2 Jan 2007 13:39:16 +0100 Message-ID: <20070102123916.GA8689@lst.de> References: <200612112159.kBBLxmep005850@fire-2.osdl.org> <20061211141029.9a0b0376.akpm@osdl.org> <20061212103842.GA9619@lst.de> <20061212132600.GA19912@lst.de> <457EBAE3.6090609@panasas.com> <20070102120531.GB7032@lst.de> <20070102123418.GW2483@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from verein.lst.de ([213.95.11.210]:45508 "EHLO mail.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964862AbXABMjl (ORCPT ); Tue, 2 Jan 2007 07:39:41 -0500 Content-Disposition: inline In-Reply-To: <20070102123418.GW2483@kernel.dk> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Jens Axboe Cc: Christoph Hellwig , Boaz Harrosh , linux-scsi@vger.kernel.org On Tue, Jan 02, 2007 at 01:34:18PM +0100, Jens Axboe wrote: > On Tue, Jan 02 2007, Christoph Hellwig wrote: > > This gets a little offtopic for the original issue, so let's cut the Cc > > list and change the subject. > > > > On Tue, Dec 12, 2006 at 04:21:23PM +0200, Boaz Harrosh wrote: > > > I'm afraid this might not be enough because of code in drivers/ide/ide-cd.c. It does IO off of request->data. > > > > Only for FS requests, but we do BLOCK_PC requests here. > > ->buffer is the old style FS requests, ->data is never used for FS > requests. BLOCK_PC requests should use just ->data, but I would not be > surprised if ide-cd and others still map it to ->buffer. Actually after my last patch BLOCK_PC request should use neither. Nowdays if a BLOCK_PC requests wants to transfer data it must use req->bio.