From patchwork Thu Mar 7 14:43:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenchao Hao X-Patchwork-Id: 778776 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AC2271EB2F; Thu, 7 Mar 2024 14:45:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709822753; cv=none; b=Mo1Y26JmPH+jYNHgNkidqqHrMhHEGyesvZ/oYCEQtYS0IsF+Qd3LbZyKgD5+TdEKFBI4dMlE+sjBk6E9a2i0+Y74Tl10YCY3IX5dh1wvL6NfmfLxytyWVM5YccZzgDwvVDVyeALeEpfj6zAQUEho7Dg4xVqP45SWbm3QV/nhj+M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709822753; c=relaxed/simple; bh=1qZVm0xyYLh7JYAEGw5xTkCh+bdrOkAYksX68kfmoGk=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Vtmkd4mFHT/ssUHo/0sGK3hG1CGcNlykUhBxS5YQI/wkd4nzhFvFNlGVpoxdwzVY8TbPGlKfsSjQJvL5aeCM+nkFQhmoubdtKoE0KeIiKqYxkGfPckUVkhJj1B+OCx9qoq/Z6KJoNjWK0mblU2NPp/FKSrSF9TBZWuQfKkVmoxc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.214]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4TrBtT6wFlz1FLwj; Thu, 7 Mar 2024 22:45:37 +0800 (CST) Received: from kwepemm600012.china.huawei.com (unknown [7.193.23.74]) by mail.maildlp.com (Postfix) with ESMTPS id 56B271A016C; Thu, 7 Mar 2024 22:45:47 +0800 (CST) Received: from build.huawei.com (10.175.101.6) by kwepemm600012.china.huawei.com (7.193.23.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Thu, 7 Mar 2024 22:45:46 +0800 From: Wenchao Hao To: "James E . J . Bottomley" , "Martin K . Petersen" , , CC: Wenchao Hao , Subject: [PATCH v4 0/3] SCSI: Fix issues between removing device and error handle Date: Thu, 7 Mar 2024 22:43:08 +0800 Message-ID: <20240307144311.73735-1-haowenchao2@huawei.com> X-Mailer: git-send-email 2.32.0 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemm600012.china.huawei.com (7.193.23.74) I am testing SCSI error handle with my previous scsi_debug error injection patches, and found some issues when removing device and error handler happened together. These issues are triggered because devices in removing would be skipped when calling shost_for_each_device(). The issues are found: 1. statistic info printed at beginning of scsi_error_handler is wrong 2. device reset is not triggered V4: - Remove the forth patch which fix IO hang when device removing becaust the issue is fixed by commit '6df0e077d76bd (scsi: core: Kick the requeue list after inserting when flushing)' V3: - Update patch description - Update comments of functions added V2: - Fix IO hang by run all devices' queue after error handler - Do not modify shost_for_each_device() directly but add a new helper to iterate devices but do not skip devices in removing Wenchao Hao (3): scsi: core: Add new helper to iterate all devices of host scsi: scsi_error: Fix wrong statistic when print error info scsi: scsi_error: Fix device reset is not triggered drivers/scsi/scsi.c | 46 ++++++++++++++++++++++++++------------ drivers/scsi/scsi_error.c | 4 ++-- include/scsi/scsi_device.h | 25 ++++++++++++++++++--- 3 files changed, 56 insertions(+), 19 deletions(-)