From patchwork Fri Jun 17 10:55:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 12885567 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A6A3CCA480 for ; Fri, 17 Jun 2022 11:01:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380273AbiFQLBn (ORCPT ); Fri, 17 Jun 2022 07:01:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381972AbiFQLBm (ORCPT ); Fri, 17 Jun 2022 07:01:42 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DBC77694B9; Fri, 17 Jun 2022 04:01:40 -0700 (PDT) Received: from fraeml715-chm.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4LPbc14wRDz687hH; Fri, 17 Jun 2022 18:57:53 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml715-chm.china.huawei.com (10.206.15.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 17 Jun 2022 13:01:38 +0200 Received: from localhost.localdomain (10.69.192.58) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 17 Jun 2022 12:01:34 +0100 From: John Garry To: , , , , , , , , , CC: , , , , , , , , , John Garry Subject: [PATCH 1/5] scsi: core: Remove reserved request time-out handling Date: Fri, 17 Jun 2022 18:55:16 +0800 Message-ID: <1655463320-241202-2-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1655463320-241202-1-git-send-email-john.garry@huawei.com> References: <1655463320-241202-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The SCSI code does not currently support reserved commands. As such, requests which time-out would never be reserved, and scsi_timeout() 'reserved' arg should never be set. Remove handling for reserved requests and drop wrapper scsi_timeout() as it now just calls scsi_times_out() always. Signed-off-by: John Garry Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- drivers/scsi/scsi_error.c | 3 ++- drivers/scsi/scsi_lib.c | 12 ++---------- drivers/scsi/scsi_priv.h | 3 ++- 3 files changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 49ef864df581..80cd6835ac70 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -318,6 +318,7 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd) /** * scsi_times_out - Timeout function for normal scsi commands. * @req: request that is timing out. + * @reserved: whether the request is a reserved request. * * Notes: * We do not need to lock this. There is the potential for a race @@ -325,7 +326,7 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd) * normal completion function determines that the timer has already * fired, then it mustn't do anything. */ -enum blk_eh_timer_return scsi_times_out(struct request *req) +enum blk_eh_timer_return scsi_times_out(struct request *req, bool reserved) { struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req); enum blk_eh_timer_return rtn = BLK_EH_DONE; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 6ffc9e4258a8..d635831165d5 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1790,14 +1790,6 @@ static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx, return ret; } -static enum blk_eh_timer_return scsi_timeout(struct request *req, - bool reserved) -{ - if (reserved) - return BLK_EH_RESET_TIMER; - return scsi_times_out(req); -} - static int scsi_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, unsigned int hctx_idx, unsigned int numa_node) { @@ -1912,7 +1904,7 @@ static const struct blk_mq_ops scsi_mq_ops_no_commit = { .put_budget = scsi_mq_put_budget, .queue_rq = scsi_queue_rq, .complete = scsi_complete, - .timeout = scsi_timeout, + .timeout = scsi_times_out, #ifdef CONFIG_BLK_DEBUG_FS .show_rq = scsi_show_rq, #endif @@ -1941,7 +1933,7 @@ static const struct blk_mq_ops scsi_mq_ops = { .queue_rq = scsi_queue_rq, .commit_rqs = scsi_commit_rqs, .complete = scsi_complete, - .timeout = scsi_timeout, + .timeout = scsi_times_out, #ifdef CONFIG_BLK_DEBUG_FS .show_rq = scsi_show_rq, #endif diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h index 5c4786310a31..8966f20b7d55 100644 --- a/drivers/scsi/scsi_priv.h +++ b/drivers/scsi/scsi_priv.h @@ -72,7 +72,8 @@ extern void scsi_exit_devinfo(void); /* scsi_error.c */ extern void scmd_eh_abort_handler(struct work_struct *work); -extern enum blk_eh_timer_return scsi_times_out(struct request *req); +extern enum blk_eh_timer_return scsi_times_out(struct request *req, + bool reserved); extern int scsi_error_handler(void *host); extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd); extern void scsi_eh_wakeup(struct Scsi_Host *shost);