From patchwork Thu Apr 20 10:04:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13218366 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 399D2C77B78 for ; Thu, 20 Apr 2023 10:06:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234637AbjDTKGr (ORCPT ); Thu, 20 Apr 2023 06:06:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234525AbjDTKGL (ORCPT ); Thu, 20 Apr 2023 06:06:11 -0400 Received: from mail-wm1-f49.google.com (mail-wm1-f49.google.com [209.85.128.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16AA74C3D; Thu, 20 Apr 2023 03:05:59 -0700 (PDT) Received: by mail-wm1-f49.google.com with SMTP id 5b1f17b1804b1-3f1833c5991so3500295e9.1; Thu, 20 Apr 2023 03:05:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681985157; x=1684577157; 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=2Fzr57yVT4AGfP8f/rHc++3o/RNaaVBknK7ki+b7wqg=; b=iNJWtfUoZm3M1WdPvfKmaekuBz73pmk+zGU25UL9V4xm/wrEOshGfFZelYcpiG6lZC WgPJIJ1C1mMnemN2epVQ4O/3TCGqp+7HNKhVrP9844LsryGKsBesbswI28UaV9DwY52r NyH7RECmUgJcawBVGK9WVXiNit1caEEmN4k9GCIW6YpMGZC9n/qAIUcjPiGtegYgHn4T iBDUwLpWI95I6+EEAD52ch2jE899Z8e0UdR+fEN6uvwgrLMvEubetW5JtrN8xZXKeQld 7QYm7Qb2eEyF6LImk+sWVVeL7pKpOB7MlWgMNtz+dWxRov7KCMlzrtw7CGJoKJCpkXD9 bF5A== X-Gm-Message-State: AAQBX9fRUE9PKFBMyZIo7zSzLtQ/aktRe0s0Hi4xOhCTDJe1FJCOwjmA WIA2gM59WKyVIlQMe3HhV+I= X-Google-Smtp-Source: AKy350bLyO4KQbV/PoPdUqDGkkMZX7ZfuVuX5huOYxZIzQyFuycseqFdIVwkpU3U96njdfQtavhtJw== X-Received: by 2002:a05:6000:1201:b0:2f2:c46b:1eb5 with SMTP id e1-20020a056000120100b002f2c46b1eb5mr939686wrx.59.1681985157174; Thu, 20 Apr 2023 03:05:57 -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.88.2023.04.20.03.05.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 03:05:56 -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 06/22] md: raid5-log: use __bio_add_page to add single page Date: Thu, 20 Apr 2023 12:04:45 +0200 Message-Id: <20230420100501.32981-7-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-btrfs@vger.kernel.org From: Johannes Thumshirn The raid5 log metadata submission 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 Reviewed-by: Damien Le Moal Acked-by: Song Liu --- drivers/md/raid5-cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 46182b955aef..852b265c5db4 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -792,7 +792,7 @@ static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log) io->current_bio = r5l_bio_alloc(log); io->current_bio->bi_end_io = r5l_log_endio; io->current_bio->bi_private = io; - bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); + __bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); r5_reserve_log_entry(log, io);