From patchwork Fri Sep 3 10:29:20 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tejun Heo X-Patchwork-Id: 153201 Received: from mx01.colomx.prod.int.phx2.redhat.com (mx3-phx2.redhat.com [209.132.183.24]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o83AZTP8008085 for ; Fri, 3 Sep 2010 10:36:09 GMT Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by mx01.colomx.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o83AW27Q000453; Fri, 3 Sep 2010 06:32:03 -0400 Received: from int-mx03.intmail.prod.int.phx2.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o83AV4gN021794 for ; Fri, 3 Sep 2010 06:31:04 -0400 Received: from mx1.redhat.com (ext-mx06.extmail.prod.ext.phx2.redhat.com [10.5.110.10]) by int-mx03.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o83AUw7Z022133; Fri, 3 Sep 2010 06:30:58 -0400 Received: from hera.kernel.org (hera.kernel.org [140.211.167.34]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o83AUmBr015085; Fri, 3 Sep 2010 06:30:48 -0400 Received: from htj.dyndns.org (localhost [127.0.0.1]) by hera.kernel.org (8.14.4/8.14.3) with ESMTP id o83AUTmt011290; Fri, 3 Sep 2010 10:30:30 GMT X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.95.2 at hera.kernel.org Received: by htj.dyndns.org (Postfix, from userid 10000) id 19ED71CC06EF; Fri, 3 Sep 2010 12:30:01 +0200 (CEST) From: Tejun Heo To: jaxboe@fusionio.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, linux-raid@vger.kernel.org, dm-devel@redhat.com, hch@lst.de, konishi.ryusuke@lab.ntt.co.jp, James.Bottomley@suse.de, tytso@mit.edu, chris.mason@oracle.com, swhiteho@redhat.com, vst@vlnb.net, jack@suse.cz, rwheeler@redhat.com, hare@suse.de, neilb@suse.de, rusty@rustcorp.com.au, mst@redhat.com, snitzer@redhat.com, k-ueda@ct.jp.nec.com, mpatocka@redhat.com Date: Fri, 3 Sep 2010 12:29:20 +0200 Message-Id: <1283509796-1510-6-git-send-email-tj@kernel.org> In-Reply-To: <1283509796-1510-1-git-send-email-tj@kernel.org> References: <1283509796-1510-1-git-send-email-tj@kernel.org> X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on hera.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Fri, 03 Sep 2010 10:36:09 +0000 (UTC) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Fri, 03 Sep 2010 10:30:38 +0000 (UTC) X-RedHat-Spam-Score: -2.31 (RCVD_IN_DNSWL_MED,T_RP_MATCHES_RCVD) X-Scanned-By: MIMEDefang 2.67 on 10.5.11.16 X-Scanned-By: MIMEDefang 2.67 on 10.5.110.10 X-loop: dm-devel@redhat.com Cc: Tejun Heo , Peter Osterlund Subject: [dm-devel] [PATCH 05/41] block: remove spurious uses of REQ_HARDBARRIER X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: device-mapper development List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c index 72d6246..87311eb 100644 --- a/drivers/block/osdblk.c +++ b/drivers/block/osdblk.c @@ -310,8 +310,7 @@ static void osdblk_rq_fn(struct request_queue *q) break; /* filter out block requests we don't understand */ - if (rq->cmd_type != REQ_TYPE_FS && - !(rq->cmd_flags & REQ_HARDBARRIER)) { + if (rq->cmd_type != REQ_TYPE_FS) { blk_end_request_all(rq, 0); continue; } diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index b1cbeb5..0166ea1 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -753,7 +753,6 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command * rq->timeout = 60*HZ; rq->cmd_type = REQ_TYPE_BLOCK_PC; - rq->cmd_flags |= REQ_HARDBARRIER; if (cgc->quiet) rq->cmd_flags |= REQ_QUIET; diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c index 93984c9..e1cd606 100644 --- a/drivers/scsi/aic7xxx_old.c +++ b/drivers/scsi/aic7xxx_old.c @@ -2850,12 +2850,6 @@ aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb) aic_dev->r_total++; ptr = aic_dev->r_bins; } - if(cmd->device->simple_tags && cmd->request->cmd_flags & REQ_HARDBARRIER) - { - aic_dev->barrier_total++; - if(scb->tag_action == MSG_ORDERED_Q_TAG) - aic_dev->ordered_total++; - } x = scb->sg_length; x >>= 10; for(i=0; i<6; i++) @@ -10144,19 +10138,8 @@ static void aic7xxx_buildscb(struct aic7xxx_host *p, struct scsi_cmnd *cmd, /* We always force TEST_UNIT_READY to untagged */ if (cmd->cmnd[0] != TEST_UNIT_READY && sdptr->simple_tags) { - if (req->cmd_flags & REQ_HARDBARRIER) - { - if(sdptr->ordered_tags) - { - hscb->control |= MSG_ORDERED_Q_TAG; - scb->tag_action = MSG_ORDERED_Q_TAG; - } - } - else - { - hscb->control |= MSG_SIMPLE_Q_TAG; - scb->tag_action = MSG_SIMPLE_Q_TAG; - } + hscb->control |= MSG_SIMPLE_Q_TAG; + scb->tag_action = MSG_SIMPLE_Q_TAG; } } if ( !(aic_dev->dtr_pending) && diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index f0cfba9..535085c 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -130,17 +130,6 @@ static void sas_scsi_task_done(struct sas_task *task) sc->scsi_done(sc); } -static enum task_attribute sas_scsi_get_task_attr(struct scsi_cmnd *cmd) -{ - enum task_attribute ta = TASK_ATTR_SIMPLE; - if (cmd->request && blk_rq_tagged(cmd->request)) { - if (cmd->device->ordered_tags && - (cmd->request->cmd_flags & REQ_HARDBARRIER)) - ta = TASK_ATTR_ORDERED; - } - return ta; -} - static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, struct domain_device *dev, gfp_t gfp_flags) @@ -160,7 +149,7 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd, task->ssp_task.retry_count = 1; int_to_scsilun(cmd->device->lun, &lun); memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8); - task->ssp_task.task_attr = sas_scsi_get_task_attr(cmd); + task->ssp_task.task_attr = TASK_ATTR_SIMPLE; memcpy(task->ssp_task.cdb, cmd->cmnd, 16); task->scatter = scsi_sglist(cmd); diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h index 1723138..d6e7994 100644 --- a/include/scsi/scsi_tcq.h +++ b/include/scsi/scsi_tcq.h @@ -97,13 +97,9 @@ static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth) static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg) { struct request *req = cmd->request; - struct scsi_device *sdev = cmd->device; if (blk_rq_tagged(req)) { - if (sdev->ordered_tags && req->cmd_flags & REQ_HARDBARRIER) - *msg++ = MSG_ORDERED_TAG; - else - *msg++ = MSG_SIMPLE_TAG; + *msg++ = MSG_SIMPLE_TAG; *msg++ = req->tag; return 2; }