From patchwork Thu Apr 20 10:04:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13218289 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 6D798C77B7E for ; Thu, 20 Apr 2023 10:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234345AbjDTKHQ (ORCPT ); Thu, 20 Apr 2023 06:07:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234584AbjDTKGP (ORCPT ); Thu, 20 Apr 2023 06:06:15 -0400 Received: from mail-wm1-f45.google.com (mail-wm1-f45.google.com [209.85.128.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7144A5585; Thu, 20 Apr 2023 03:06:06 -0700 (PDT) Received: by mail-wm1-f45.google.com with SMTP id 5b1f17b1804b1-3f09b9ac51dso15223035e9.0; Thu, 20 Apr 2023 03:06:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681985165; x=1684577165; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JN1Y2bvJVpq6/q4dmcPnKZ0rBsOm/7Q8Ad5f4nAyRoc=; b=V4wC6bPgcjqNFRM4mOiYkmycq1riepOBgH3hlOf9DdJImjmVRSEFAdLMGg+jLvjEaB XrKP6WqXEYJHPIU7ch7dKw37XMrK15cerKJ1UfSseyytCjwNpB22ui0/M3/9QJDMmv9L Pln5O/+sMJD+FY+xQwYvwbSCyB17ScMO0gA/pJWQo2ZISYgCLe5S5iYVz33fS7+9HzhD a/jqWzT7NWFRef86VbuNmiJqFOjVRqWmps1o0EtDEF3T8wMDDS1v42KQL461/C3RVQzC s4mdqht/JJMGsIK1aOZIJ0pJJWxzGXSuqq9bQz3p3cloib2WNi7p1eeCCraq+OsfwZJS ruNQ== X-Gm-Message-State: AAQBX9e7KY+KB2tRO2Z2+gMQN5bah9NGl10qG39kEjxhFrGx1Qosv052 gXzBTecC022z768//8bROqU= X-Google-Smtp-Source: AKy350bZO9H6VdEX4U511+f90s6OY6x4jbtQEdcc2xOoFywxWKRM3Dh+QbBQ+ZMvXg8fuNS0QB1TpA== X-Received: by 2002:a5d:58d3:0:b0:2f0:583:44be with SMTP id o19-20020a5d58d3000000b002f0058344bemr1030678wrf.0.1681985164633; Thu, 20 Apr 2023 03:06:04 -0700 (PDT) Received: from localhost.localdomain (aftr-62-216-205-208.dynamic.mnet-online.de. [62.216.205.208]) by smtp.googlemail.com with ESMTPSA id l11-20020a5d674b000000b0030276f42f08sm201410wrw.88.2023.04.20.03.06.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 03:06:04 -0700 (PDT) From: Johannes Thumshirn To: axboe@kernel.dk Cc: johannes.thumshirn@wdc.com, agruenba@redhat.com, cluster-devel@redhat.com, damien.lemoal@wdc.com, dm-devel@redhat.com, dsterba@suse.com, hare@suse.de, hch@lst.de, jfs-discussion@lists.sourceforge.net, kch@nvidia.com, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-raid@vger.kernel.org, ming.lei@redhat.com, rpeterso@redhat.com, shaggy@kernel.org, snitzer@kernel.org, song@kernel.org, willy@infradead.org, Damien Le Moal Subject: [PATCH v4 12/22] zonefs: use __bio_add_page for adding single page to bio Date: Thu, 20 Apr 2023 12:04:51 +0200 Message-Id: <20230420100501.32981-13-jth@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230420100501.32981-1-jth@kernel.org> References: <20230420100501.32981-1-jth@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Johannes Thumshirn The zonefs superblock reading code uses bio_add_page() to add a page to a newly created bio. bio_add_page() can fail, but the return value is never checked. Use __bio_add_page() as adding a single page to a newly created bio is guaranteed to succeed. This brings us a step closer to marking bio_add_page() as __must_check. Signed-off-by: Johannes Thumshirn Acked-by: Damien Le Moal --- fs/zonefs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index 23b8b299c64e..9350221abfc5 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -1128,7 +1128,7 @@ static int zonefs_read_super(struct super_block *sb) bio_init(&bio, sb->s_bdev, &bio_vec, 1, REQ_OP_READ); bio.bi_iter.bi_sector = 0; - bio_add_page(&bio, page, PAGE_SIZE, 0); + __bio_add_page(&bio, page, PAGE_SIZE, 0); ret = submit_bio_wait(&bio); if (ret)