From patchwork Wed Aug 5 02:51:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Muneendra Kumar M X-Patchwork-Id: 11701649 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F4A214DD for ; Wed, 5 Aug 2020 09:46:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AD0022CAE for ; Wed, 5 Aug 2020 09:46:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="chwC3CUu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728250AbgHEJqT (ORCPT ); Wed, 5 Aug 2020 05:46:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37532 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728045AbgHEJp1 (ORCPT ); Wed, 5 Aug 2020 05:45:27 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D52B2C0617A0 for ; Wed, 5 Aug 2020 02:45:24 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id o1so24958591plk.1 for ; Wed, 05 Aug 2020 02:45:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Vs4ohT5ml+/RHTL8m+5tUUhTKflTPiKuw9gqdGTRkSA=; b=chwC3CUuzjhRvovtpePtnn+xxLaZBEBhwsyhRx9UDtch5OYSH5QUjY6R1+njKn8k6H Gx9be3a+QS3ovtfK5gvPfysTfpwkXEpqaSLAdXSAOC8QvD4khIJd+rl15CfC2crQjTar OnI2bIaYy7eFtNBlqECTWDXWri4eN1nQm50bo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Vs4ohT5ml+/RHTL8m+5tUUhTKflTPiKuw9gqdGTRkSA=; b=UxMKCsMgIKUrjkwJZCZTk6X8UG8YF8J5ZReAANdHa8po1dEMJVeNJudPZyNfmp7kfj reyw4rfknQi/W9MZn1tWakrzyU8PrWr5ge65+ck3U2DWYsJZUVJTX79vz3Ouk+P7dUDM t8ktvIKMJ50OsoOvjh+r8lWvA8e/GMoeZUh7f35QS8RgG1YL4iFMWOsTtWEcnR9GdXvk 6ZZVzvP658HMsjLDTCMPiOQin/VqeXeFfQvSFyR5qZeyqtpPYGpyA5amOKZ7oqs30FVO W5/OEy67c5eq/oxvMKHdEHOXBS7h7Oz8lLpllS+gtEyozYa4hR2nCoaZVw+DmPmWQ745 iDig== X-Gm-Message-State: AOAM531kG+wbeema0G2Yxs3z324ZEjhe2BptUv49Z5UPv54PHqauowx6 E+96ECjM8OVWmtIPAFagwCALu1JGULR1Rwm1oG63Vws19j5W0DEWPmtsl8XXtX9iojkQ/mVel23 s94YK2Ru2Wj8eTad3quUvSLTX+04JGY5uH1zUJD2jt0/HSGjFZxuB3/zijQMlll8QJbT0oof0za fnXJdS9w== X-Google-Smtp-Source: ABdhPJypzbVp8Jew6AoGp0c+0W5f3t7Tbw3uOgAwFhsnMAXuwS2XLSynTsvLo3gNd4Pi1X009XSAKg== X-Received: by 2002:a17:902:7b82:: with SMTP id w2mr2340875pll.39.1596620723799; Wed, 05 Aug 2020 02:45:23 -0700 (PDT) Received: from localhost.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id e9sm2632346pfh.151.2020.08.05.02.45.21 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Aug 2020 02:45:23 -0700 (PDT) From: Muneendra To: linux-scsi@vger.kernel.org Cc: hare@suse.de, jsmart2021@gmail.com, emilne@redhat.com, mkumar@redhat.com, Muneendra Subject: [PATCH 4/5] scsi: Added routine to set SCMD_NORETRIES_ABORT bit for outstanding io on scsi_dev Date: Wed, 5 Aug 2020 08:21:01 +0530 Message-Id: <1596595862-11075-5-git-send-email-muneendra.kumar@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1596595862-11075-1-git-send-email-muneendra.kumar@broadcom.com> References: <1596595862-11075-1-git-send-email-muneendra.kumar@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Added a new routine scsi_set_noretries_abort_io_device()to set SCMD_NORETRIES_ABORT for all the inflight/pending IO's on a particular scsi device at that particular instant. Export the symbol so the routine can be called by scsi_transport_fc.c Added new function declaration scsi_set_noretries_abort_io_device in scsi_priv.h Signed-off-by: Muneendra Reviewed-by: Hannes Reinecke --- drivers/scsi/scsi_error.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/scsi/scsi_priv.h | 1 + 2 files changed, 54 insertions(+) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 3222496..938d770 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -271,6 +271,59 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd) call_rcu(&scmd->rcu, scsi_eh_inc_host_failed); } +static bool +scsi_set_noretries_abort_io(struct request *rq, void *priv, bool reserved) +{ + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); + struct scsi_device *sdev = scmd->device; + + /* only set SCMD_NORETRIES_ABORT on ios on a specific sdev */ + if (sdev != priv) + return true; + /* we don't want this command reissued on abort success + * so set SCMD_NORETRIES_ABORT bit to ensure it + * won't get reissued + */ + if (READ_ONCE(rq->state) == MQ_RQ_IN_FLIGHT) + set_bit(SCMD_NORETRIES_ABORT, &scmd->state); + return true; +} + +static int +__scsi_set_noretries_abort_io_device(struct scsi_device *sdev) +{ + + if (sdev->sdev_state != SDEV_RUNNING) + return -EINVAL; + + if (blk_queue_init_done(sdev->request_queue)) { + + blk_mq_quiesce_queue(sdev->request_queue); + blk_mq_tagset_busy_iter(&sdev->host->tag_set, + scsi_set_noretries_abort_io, sdev); + blk_mq_unquiesce_queue(sdev->request_queue); + } + return 0; +} + +/* + * scsi_set_noretries_abort_io_device - set the SCMD_NORETRIES_ABORT + * bit for all the pending io's on a device + * @sdev: scsi_device + */ +int +scsi_set_noretries_abort_io_device(struct scsi_device *sdev) +{ + struct Scsi_Host *shost = sdev->host; + int ret = -EINVAL; + + mutex_lock(&shost->scan_mutex); + ret = __scsi_set_noretries_abort_io_device(sdev); + mutex_unlock(&shost->scan_mutex); + return ret; +} +EXPORT_SYMBOL(scsi_set_noretries_abort_io_device); + /** * scsi_times_out - Timeout function for normal scsi commands. * @req: request that is timing out. diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h index d12ada0..1bbffd3 100644 --- a/drivers/scsi/scsi_priv.h +++ b/drivers/scsi/scsi_priv.h @@ -81,6 +81,7 @@ void scsi_eh_ready_devs(struct Scsi_Host *shost, int scsi_eh_get_sense(struct list_head *work_q, struct list_head *done_q); int scsi_noretry_cmd(struct scsi_cmnd *scmd); +extern int scsi_set_noretries_abort_io_device(struct scsi_device *sdev); /* scsi_lib.c */ extern int scsi_maybe_unblock_host(struct scsi_device *sdev);