From patchwork Fri May 28 09:37:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weihang Li X-Patchwork-Id: 12286533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D7B2C47087 for ; Fri, 28 May 2021 09:38:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B72D6128B for ; Fri, 28 May 2021 09:38:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236041AbhE1Jje (ORCPT ); Fri, 28 May 2021 05:39:34 -0400 Received: from szxga08-in.huawei.com ([45.249.212.255]:2334 "EHLO szxga08-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235640AbhE1Jjb (ORCPT ); Fri, 28 May 2021 05:39:31 -0400 Received: from dggeml767-chm.china.huawei.com (unknown [172.30.72.55]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4Frzy72Z6bz1BFvY; Fri, 28 May 2021 17:33:19 +0800 (CST) Received: from dggema753-chm.china.huawei.com (10.1.198.195) by dggeml767-chm.china.huawei.com (10.1.199.177) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 28 May 2021 17:37:55 +0800 Received: from localhost.localdomain (10.69.192.56) by dggema753-chm.china.huawei.com (10.1.198.195) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 28 May 2021 17:37:55 +0800 From: Weihang Li To: , CC: , , , Weihang Li Subject: [PATCH v4 for-next 00/12] RDMA: Use refcount_t for reference counting Date: Fri, 28 May 2021 17:37:31 +0800 Message-ID: <1622194663-2383-1-git-send-email-liweihang@huawei.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggema753-chm.china.huawei.com (10.1.198.195) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org There are some refcnt in type of atomic_t in RDMA subsystem, almost all of them is wrote before the refcount_t is acheived in kernel. refcount_t is better than integer for reference counting, it will WARN on overflow/underflow and avoid use-after-free risks. Changes since v3: * Drop the rdmavt patch because the refcount_t is not suitable for the logic. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1621925504-33019-1-git-send-email-liweihang@huawei.com/ Changes since v2: * Drop i40iw related parts because this driver will be removed soon. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1621590825-60693-1-git-send-email-liweihang@huawei.com/ Changes since v1: * Split these patches by variable granularity. * Fix a warning on refcount of struct mcast_group. * Add a patch on rdmavt. * Drop "RDMA/hns: Use refcount_t APIs for HEM". * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1620958299-4869-1-git-send-email-liweihang@huawei.com/ Weihang Li (12): RDMA/core: Use refcount_t instead of atomic_t on refcount of iwcm_id_private RDMA/core: Use refcount_t instead of atomic_t on refcount of iwpm_admin_data RDMA/core: Use refcount_t instead of atomic_t on refcount of ib_mad_snoop_private RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_member RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_port RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_group RDMA/core: Use refcount_t instead of atomic_t on refcount of ib_uverbs_device RDMA/hns: Use refcount_t instead of atomic_t for CQ reference counting RDMA/hns: Use refcount_t instead of atomic_t for SRQ reference counting RDMA/hns: Use refcount_t instead of atomic_t for QP reference counting RDMA/cxgb4: Use refcount_t instead of atomic_t for reference counting RDMA/ipoib: Use refcount_t instead of atomic_t for reference counting drivers/infiniband/core/iwcm.c | 9 ++++--- drivers/infiniband/core/iwcm.h | 2 +- drivers/infiniband/core/iwpm_util.c | 12 ++++++---- drivers/infiniband/core/iwpm_util.h | 2 +- drivers/infiniband/core/mad_priv.h | 2 +- drivers/infiniband/core/multicast.c | 37 ++++++++++++++++------------- drivers/infiniband/core/uverbs.h | 2 +- drivers/infiniband/core/uverbs_main.c | 12 +++++----- drivers/infiniband/hw/cxgb4/cq.c | 6 ++--- drivers/infiniband/hw/cxgb4/ev.c | 8 +++---- drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 2 +- drivers/infiniband/hw/hns/hns_roce_cq.c | 8 +++---- drivers/infiniband/hw/hns/hns_roce_device.h | 6 ++--- drivers/infiniband/hw/hns/hns_roce_qp.c | 12 +++++----- drivers/infiniband/hw/hns/hns_roce_srq.c | 8 +++---- drivers/infiniband/ulp/ipoib/ipoib.h | 4 ++-- drivers/infiniband/ulp/ipoib/ipoib_main.c | 8 +++---- 17 files changed, 74 insertions(+), 66 deletions(-)