From patchwork Sat Jan 28 09:41:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhongjinghua X-Patchwork-Id: 13119815 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 1AAB1C27C76 for ; Sat, 28 Jan 2023 09:17:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229464AbjA1JRu (ORCPT ); Sat, 28 Jan 2023 04:17:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45220 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231444AbjA1JRs (ORCPT ); Sat, 28 Jan 2023 04:17:48 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 649BB30D0; Sat, 28 Jan 2023 01:17:46 -0800 (PST) Received: from kwepemm600002.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4P3pkT5GC9zfZ8f; Sat, 28 Jan 2023 17:17:37 +0800 (CST) Received: from localhost.localdomain (10.175.127.227) by kwepemm600002.china.huawei.com (7.193.23.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Sat, 28 Jan 2023 17:17:42 +0800 From: Zhong Jinghua To: , , , , , CC: , , , , Subject: [PATCH-next v2 0/2] scsi, driver core: fix iscsi rescan fails to create block device Date: Sat, 28 Jan 2023 17:41:44 +0800 Message-ID: <20230128094146.205858-1-zhongjinghua@huawei.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600002.china.huawei.com (7.193.23.29) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org v1->v2: add a new patch that introduces get_device_unless_zero() method. Hello, This patchset introduces get_device_unless_zero() method, Avoid dev's reference count from 0 to 1, as this will cause bugs in some parts of the kernel. We used this method when we fixed an issue with iSCSI delete order. Zhong Jinghua (2): driver core: introduce get_device_unless_zero() scsi: fix iscsi rescan fails to create block device drivers/base/core.c | 8 ++++++++ drivers/scsi/scsi_sysfs.c | 4 +--- include/linux/device.h | 1 + 3 files changed, 10 insertions(+), 3 deletions(-)