From mboxrd@z Thu Jan 1 00:00:00 1970 From: FUJITA Tomonori Subject: [PATCH 0/9] scsi_data_buffer structure (in preparation for bidi) Date: Fri, 7 Sep 2007 06:50:08 +0900 Message-ID: <20070906183448I.tomof@acm.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from mo11.iij4u.or.jp ([210.138.174.79]:43001 "EHLO mo11.iij4u.or.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932422AbXIFVvj (ORCPT ); Thu, 6 Sep 2007 17:51:39 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: jens.axboe@oracle.com, James.Bottomley@SteelEye.com, bharrosh@panasas.com, fujita.tomonori@lab.ntt.co.jp This patchset, which I submitted before, adds a new data structure, scsi_data_buffer, including everything for data transfer: struct scsi_data_buffer { unsigned length; int resid; short sg_count; short __sg_count; struct scatterlist *sglist; }; One scsi_data_buffer structure is embedded in struct scsi_cmnd for uni-directional transfer. All the members are just moved from scsi_cmnd structure to scsi_data_buffer structure. So nothing is added to scsi_cmnd structure. After applying this patchset, llds must use the scsi data accessors. This patchset includes some conversation patches (most of them are patches that Boaz submitted before), however there is still some code that is needed to be converted. Boaz, if you still have other conversation patches, please submit them. I suspect that nobody cares about some of unconverted llds, which will be not compilable after this patchset. I'll fix ldds that people complain about. It's difficult to test this patchset in -mm via scsi-misc. Jens, please send this to -mm via the block tree.