From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 12CAAC33C8C for ; Tue, 7 Jan 2020 17:36:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DCB3620848 for ; Tue, 7 Jan 2020 17:36:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="O45qqj0a" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728501AbgAGRgs (ORCPT ); Tue, 7 Jan 2020 12:36:48 -0500 Received: from mail-pj1-f67.google.com ([209.85.216.67]:55527 "EHLO mail-pj1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728470AbgAGRgr (ORCPT ); Tue, 7 Jan 2020 12:36:47 -0500 Received: by mail-pj1-f67.google.com with SMTP id d5so80892pjz.5; Tue, 07 Jan 2020 09:36:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=yEpRHlcDF4psUPPX8udaCtEP3gg4YAcBzZqIRmvDq4M=; b=O45qqj0aDDULssDuKLQcH16n+Zkv27jPGry9/wMjWy0wRqXphQim2gedId/p3u4n2Z MMcmLTugiChCJ7XpCS0cGoXvkAUaTZCdA68ICgGDyGESgXIrKDek3SK5U9jL9ggoBXKi /QVCQV+SXMbuh3h4lzYjs4AmZAXZ8R82e/Rz//ukbWs9tLnHy3FyBZsXgved9Bf6PNdH C47yCiHk9ag1bygHICUnu52JC3Q84XJSjP7qHGcrb+lh/8JLZruI1NBnArcirWoER96h gGhphUznyXUT6/c8h+3fjnCkTa5SD9fnFzBHJWF4xI2QScOkI0ZgDMhr/5m7UuWzj1Yw 1aMQ== 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=yEpRHlcDF4psUPPX8udaCtEP3gg4YAcBzZqIRmvDq4M=; b=N7K4mV9isj56J6iEg0jf4RJfp4szhOeDDU/o2malQ/LZ04+6wa1i6LGkxd0Xntx9TP 960sZIz7FqvAUKZ0TPOf+WlUyyiDAGQYr7cw+9akg4rk2jCsqQR5vRLlZTUl7v9nWoby MnPWzE+1IIlxVf4aUyjU3gn85qtIGnXzeCDV6KNFClH9ABVC6q/eAvPUztem99K6f4AQ X1MdciW+EZvvRZ/PYzQMg3vVRXsCfBqe/7HTB87czANOZIRCCCrWoyQtmW3zboaRDQUJ ZY9qXIR9GDlf9uoKhf8truqM4Ldi5oLWcdTTuo4g2lQgERjkTt7bPqfcbc6FovRb7Lmd TA9w== X-Gm-Message-State: APjAAAU4X//CUizQioTEXbhm+43dlK8fbgolWuYfbV7qqqBRqKh/+qmi tMkz1D3dfXHI6QxESfvkZ/U= X-Google-Smtp-Source: APXvYqwlIMhhQqRk4XXts851ki2Ruxlx1uFIWb/XbuB0nNQEVcpwt/2clYA0lB6mVvUaefD7sNnXEw== X-Received: by 2002:a17:902:c509:: with SMTP id o9mr822791plx.112.1578418607016; Tue, 07 Jan 2020 09:36:47 -0800 (PST) Received: from madhuparna-HP-Notebook.nitk.ac.in ([2402:3a80:1ee3:fd53:981d:523f:a647:bef8]) by smtp.gmail.com with ESMTPSA id d3sm130091pfn.113.2020.01.07.09.36.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 09:36:46 -0800 (PST) From: madhuparnabhowmik04@gmail.com To: dennis.dalessandro@intel.com, mike.marciniszyn@intel.com, dledford@redhat.com, paulmck@kernel.org Cc: rcu@vger.kernel.org, joel@joelfernandes.org, frextrite@gmail.com, linux-kernel-mentees@lists.linuxfoundation.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Madhuparna Bhowmik Subject: [PATCH 3/3] infiniband: sw: rdmavt: mcast.c: Use built-in RCU list checking Date: Tue, 7 Jan 2020 23:05:10 +0530 Message-Id: <20200107173510.20320-3-madhuparnabhowmik04@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200107173510.20320-1-madhuparnabhowmik04@gmail.com> References: <20200107173510.20320-1-madhuparnabhowmik04@gmail.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Madhuparna Bhowmik Use built-in RCU and lock-checking for list_for_each_entry_rcu() by passing the cond argument. Signed-off-by: Madhuparna Bhowmik --- drivers/infiniband/sw/rdmavt/mcast.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/sw/rdmavt/mcast.c b/drivers/infiniband/sw/rdmavt/mcast.c index dd11c6fcd060..5fce375f22f4 100644 --- a/drivers/infiniband/sw/rdmavt/mcast.c +++ b/drivers/infiniband/sw/rdmavt/mcast.c @@ -224,7 +224,8 @@ static int rvt_mcast_add(struct rvt_dev_info *rdi, struct rvt_ibport *ibp, } /* Search the QP list to see if this is already there. */ - list_for_each_entry_rcu(p, &tmcast->qp_list, list) { + list_for_each_entry_rcu(p, &tmcast->qp_list, list + lock_is_held(&(ibp->lock).dep_map)) { if (p->qp == mqp->qp) { ret = ESRCH; goto bail; -- 2.17.1