From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756381AbXLKWwL (ORCPT ); Tue, 11 Dec 2007 17:52:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758715AbXLKWuv (ORCPT ); Tue, 11 Dec 2007 17:50:51 -0500 Received: from mx1.redhat.com ([66.187.233.31]:39326 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758687AbXLKWut (ORCPT ); Tue, 11 Dec 2007 17:50:49 -0500 Date: Tue, 11 Dec 2007 17:50:41 -0500 (EST) Message-Id: <20071211.175041.15586071.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, bzolnier@gmail.com Subject: [PATCH 23/30] blk_end_request: changing ide normal caller (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 This patch converts "normal" parts of ide to use blk_end_request interfaces. Related 'uptodate' arguments are converted to 'error'. The conversion of 'uptodate' to 'error' is done only for the internal function, __ide_end_request(). ide_end_request() was not changed since it's exported and used by many ide drivers. With this patch, blkdev_dequeue_request() in __ide_end_request() is moved to blk_end_request, since blk_end_request takes care of dequeueing request like below: if (!list_empty(&rq->queuelist)) blkdev_dequeue_request(rq); In the case of ide, o 'dequeue' variable of __ide_end_request() is 1 only when the request is still linked to the queue (i.e. rq->queuelist is not empty) o 'dequeue' variable of __ide_end_request() is 0 only when the request has already been removed from the queue (i.e. rq->queuelist is empty) So blk_end_request can handle it correctly although ide always run thought the code above. Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Kiyoshi Ueda Signed-off-by: Jun'ichi Nomura --- drivers/ide/ide-cd.c | 6 +++--- drivers/ide/ide-io.c | 25 ++++++++++++------------- 2 files changed, 15 insertions(+), 16 deletions(-) Index: 2.6.24-rc4/drivers/ide/ide-cd.c =================================================================== --- 2.6.24-rc4.orig/drivers/ide/ide-cd.c +++ 2.6.24-rc4/drivers/ide/ide-cd.c @@ -655,9 +655,9 @@ static void cdrom_end_request (ide_drive BUG(); } else { spin_lock_irqsave(&ide_lock, flags); - end_that_request_chunk(failed, 0, - failed->data_len); - end_that_request_last(failed, 0); + if (__blk_end_request(failed, -EIO, + failed->data_len)) + BUG(); spin_unlock_irqrestore(&ide_lock, flags); } } else Index: 2.6.24-rc4/drivers/ide/ide-io.c =================================================================== --- 2.6.24-rc4.orig/drivers/ide/ide-io.c +++ 2.6.24-rc4/drivers/ide/ide-io.c @@ -58,15 +58,19 @@ static int __ide_end_request(ide_drive_t int uptodate, unsigned int nr_bytes, int dequeue) { int ret = 1; + int error = 0; + + if (uptodate <= 0) + error = uptodate ? uptodate : -EIO; /* * if failfast is set on a request, override number of sectors and * complete the whole request right now */ - if (blk_noretry_request(rq) && end_io_error(uptodate)) + if (blk_noretry_request(rq) && error) nr_bytes = rq->hard_nr_sectors << 9; - if (!blk_fs_request(rq) && end_io_error(uptodate) && !rq->errors) + if (!blk_fs_request(rq) && error && !rq->errors) rq->errors = -EIO; /* @@ -78,14 +82,9 @@ static int __ide_end_request(ide_drive_t HWGROUP(drive)->hwif->ide_dma_on(drive); } - if (!end_that_request_chunk(rq, uptodate, nr_bytes)) { - add_disk_randomness(rq->rq_disk); - if (dequeue) { - if (!list_empty(&rq->queuelist)) - blkdev_dequeue_request(rq); + if (!__blk_end_request(rq, error, nr_bytes)) { + if (dequeue) HWGROUP(drive)->rq = NULL; - } - end_that_request_last(rq, uptodate); ret = 0; } @@ -292,9 +291,9 @@ static void ide_complete_pm_request (ide drive->blocked = 0; blk_start_queue(drive->queue); } - blkdev_dequeue_request(rq); HWGROUP(drive)->rq = NULL; - end_that_request_last(rq, 1); + if (__blk_end_request(rq, 0, 0)) + BUG(); spin_unlock_irqrestore(&ide_lock, flags); } @@ -391,10 +390,10 @@ void ide_end_drive_cmd (ide_drive_t *dri } spin_lock_irqsave(&ide_lock, flags); - blkdev_dequeue_request(rq); HWGROUP(drive)->rq = NULL; rq->errors = err; - end_that_request_last(rq, !rq->errors); + if (__blk_end_request(rq, (rq->errors ? -EIO : 0), 0)) + BUG(); spin_unlock_irqrestore(&ide_lock, flags); }