Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759017AbXLKWve (ORCPT ); Tue, 11 Dec 2007 17:51:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758901AbXLKWuU (ORCPT ); Tue, 11 Dec 2007 17:50:20 -0500 Received: from mx1.redhat.com ([66.187.233.31]:39294 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758647AbXLKWuO (ORCPT ); Tue, 11 Dec 2007 17:50:14 -0500 Date: Tue, 11 Dec 2007 17:50:03 -0500 (EST) Message-Id: <20071211.175003.10249786.k-ueda@ct.jp.nec.com> To: jens.axboe@oracle.com Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, dm-devel@redhat.com, j-nomura@ce.jp.nec.com, k-ueda@ct.jp.nec.com, mike.miller@hp.com Subject: [PATCH 21/30] blk_end_request: changing cciss (take 4) From: Kiyoshi Ueda X-Mailer: Mew version 4.2 on Emacs 21.4 / Mule 5.0 =?iso-2022-jp?B?KBskQjgtTFobKEIp?= Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2625 Lines: 83 This patch converts cciss to use blk_end_request interfaces. Related 'uptodate' arguments are converted to 'error'. cciss is a little bit different from "normal" drivers. cciss directly calls bio_endio() and disk_stat_add() when completing request. But those can be replaced with __end_that_request_first(). After the replacement, request completion procedures of those drivers become like the following: o end_that_request_first() o add_disk_randomness() o end_that_request_last() This can be converted to blk_end_request() by following the rule (a) mentioned in the patch subject "[PATCH 01/30] blk_end_request: add new request completion interface". Cc: Mike Miller Signed-off-by: Kiyoshi Ueda Signed-off-by: Jun'ichi Nomura --- drivers/block/cciss.c | 25 +++---------------------- 1 files changed, 3 insertions(+), 22 deletions(-) Index: 2.6.24-rc4/drivers/block/cciss.c =================================================================== --- 2.6.24-rc4.orig/drivers/block/cciss.c +++ 2.6.24-rc4/drivers/block/cciss.c @@ -1187,17 +1187,6 @@ static int cciss_ioctl(struct inode *ino } } -static inline void complete_buffers(struct bio *bio, int status) -{ - while (bio) { - struct bio *xbh = bio->bi_next; - - bio->bi_next = NULL; - bio_endio(bio, status ? 0 : -EIO); - bio = xbh; - } -} - static void cciss_check_queues(ctlr_info_t *h) { int start_queue = h->next_to_run; @@ -1263,21 +1252,14 @@ static void cciss_softirq_done(struct re pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); } - complete_buffers(rq->bio, (rq->errors == 0)); - - if (blk_fs_request(rq)) { - const int rw = rq_data_dir(rq); - - disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); - } - #ifdef CCISS_DEBUG printk("Done with %p\n", rq); #endif /* CCISS_DEBUG */ - add_disk_randomness(rq->rq_disk); + if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq))) + BUG(); + spin_lock_irqsave(&h->lock, flags); - end_that_request_last(rq, (rq->errors == 0)); cmd_free(h, cmd, 1); cciss_check_queues(h); spin_unlock_irqrestore(&h->lock, flags); @@ -2544,7 +2526,6 @@ after_error_processing: } cmd->rq->data_len = 0; cmd->rq->completion_data = cmd; - blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); blk_complete_request(cmd->rq); } -- 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/