From patchwork Wed Apr 19 14:09:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13216857 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 86D49C77B75 for ; Wed, 19 Apr 2023 14:11:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232373AbjDSOLH (ORCPT ); Wed, 19 Apr 2023 10:11:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232125AbjDSOK4 (ORCPT ); Wed, 19 Apr 2023 10:10:56 -0400 Received: from mail-wr1-f44.google.com (mail-wr1-f44.google.com [209.85.221.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF1B2AF3A; Wed, 19 Apr 2023 07:10:39 -0700 (PDT) Received: by mail-wr1-f44.google.com with SMTP id ffacd0b85a97d-2f7c281a015so2126432f8f.1; Wed, 19 Apr 2023 07:10:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681913438; x=1684505438; 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=O3prWpcZliWfCiWFUXVNcTK2I3r6awgjBoDK9MAphBmjRjeClXB4iD5NHQfihZet2X C4TJzX5/eXF0uMNy1c9VJlTf54oMDkUcx1SqMvacyaIIeoM7l7fnhMEtZliwCJw1EWj0 /YrhYq7z/3lqpFHIJck1fIeCSMwjEVQY9pezR5INcz7sQAHAlotZtAnOKo1y/MPlXWNI lSdFWiEOGaRCOgCpCSTo/nMGhJd0z5VtU2xU6mNUh04iNBFH+Boq0/G0GDzgSU6umUZy kwVTtxPsV7qzJ8PxoS9AZbKRog25F9zVJrQIFCnbBNiLaNdzit7m+AzON0k4aEacvpwp 9O0Q== X-Gm-Message-State: AAQBX9dDBh7TFc90ubRIeLr3WP37BBKCWFFLxtm8heXbbowoUEMuTT6w dhuhzE1PSqg5Ae2LeZyAJ4I= X-Google-Smtp-Source: AKy350b+UwzbHTOCNn17UYnXZKHlXNJQwvx+l7TgssVsB5tDN4gwDjzdQ+Z4ngjORp4WObNT+HzhDA== X-Received: by 2002:adf:f10f:0:b0:2f7:efb1:ec8c with SMTP id r15-20020adff10f000000b002f7efb1ec8cmr4366904wro.23.1681913438239; Wed, 19 Apr 2023 07:10:38 -0700 (PDT) Received: from localhost.localdomain (aftr-62-216-205-204.dynamic.mnet-online.de. [62.216.205.204]) by smtp.googlemail.com with ESMTPSA id q17-20020a5d61d1000000b002faaa9a1721sm7612089wrv.58.2023.04.19.07.10.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 07:10:37 -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 v3 06/19] md: raid5-log: use __bio_add_page to add single page Date: Wed, 19 Apr 2023 16:09:16 +0200 Message-Id: <20230419140929.5924-7-jth@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230419140929.5924-1-jth@kernel.org> References: <20230419140929.5924-1-jth@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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);