From patchwork Sat Dec 19 08:18:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Leizhen (ThunderTown)" X-Patchwork-Id: 11983383 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=-8.0 required=3.0 tests=BAYES_50, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 1035CC4361B for ; Sat, 19 Dec 2020 08:19:31 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5E27523BDC for ; Sat, 19 Dec 2020 08:19:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5E27523BDC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id D00F0100ED4A3; Sat, 19 Dec 2020 00:19:29 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=45.249.212.190; helo=szxga04-in.huawei.com; envelope-from=thunder.leizhen@huawei.com; receiver= Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id E7CB7100EF25B for ; Sat, 19 Dec 2020 00:19:27 -0800 (PST) Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Cydsh31pmzksDV; Sat, 19 Dec 2020 16:18:32 +0800 (CST) Received: from thunder-town.china.huawei.com (10.174.177.9) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.498.0; Sat, 19 Dec 2020 16:19:13 +0800 From: Zhen Lei To: Dan Williams , Vishal Verma , Dave Jiang , linux-nvdimm , linux-kernel Subject: [PATCH v2 0/1] device-dax: avoid an unnecessary check in alloc_dev_dax_range() Date: Sat, 19 Dec 2020 16:18:39 +0800 Message-ID: <20201219081840.1149-1-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.177.9] X-CFilter-Loop: Reflected Message-ID-Hash: KLUVUQNU2YPMNCBW3WWY5IPUTKWDUT6R X-Message-ID-Hash: KLUVUQNU2YPMNCBW3WWY5IPUTKWDUT6R X-MailFrom: thunder.leizhen@huawei.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Zhen Lei X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: v1 --> v2: In v1, I use the "goto" statement to merge two identical __release_region() calls. However, the new patch https://lkml.org/lkml/2020/12/18/735 deletes one of them, the "goto" becomes worthless. So when krealloc() failed, directly call __release_region() and return error code. Zhen Lei (1): device-dax: avoid an unnecessary check in alloc_dev_dax_range() drivers/dax/bus.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-)