From patchwork Wed Apr 19 14:09:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13216894 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 C1AE9C7EE20 for ; Wed, 19 Apr 2023 14:11:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232082AbjDSOLD (ORCPT ); Wed, 19 Apr 2023 10:11:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232120AbjDSOK4 (ORCPT ); Wed, 19 Apr 2023 10:10:56 -0400 Received: from mail-wm1-f42.google.com (mail-wm1-f42.google.com [209.85.128.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2067A49FC; Wed, 19 Apr 2023 07:10:38 -0700 (PDT) Received: by mail-wm1-f42.google.com with SMTP id 5b1f17b1804b1-3f09b4a156eso23392915e9.3; Wed, 19 Apr 2023 07:10:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681913436; x=1684505436; 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=EWddmUi1sUqAJfDu3vTNgbuTywHhrfsi4XwupHN4WwQ=; b=CQTu5KhqZuXIxNQE2zvsZkdCqoDPsMLscSY5ut3d02mREBlc0/TH7NvvF97633ho56 /PyqmrPkfswMUd/o8F8XKzWo1x6mBZffZRFOo9pSCf0xfZd/kpz51LSjDjF5+f1Y48YX 4z8iRioegSBWkB0aPmnxDm/1u4l2MeQ48sD9hjVEBZFDwHfC98ntJs1Q6xCoVXUzpYn8 SMNz0uklsOKGoKVofcLzg5Y3d2TEdzgU+ayYHAI9A5kbLxFwRE5ilUS7YBe75zVGnAV5 mKa4jTYnu8nLQw2ZhHvN6sKlAyauNIaE1mbT6DwUkRE3wcqUr6q4leGvKz3GRt9LNaVe aqrQ== X-Gm-Message-State: AAQBX9d0W8TEkk9Ve2Oj51h0yFiH+qk6UF3JdZUAArqe1Z2pQj4YK8Sd p+QOYpaaAhytb+5l8tJ/KZw= X-Google-Smtp-Source: AKy350ZCP5TtktKYHNeFf1z9UiQzamRZMP6zyEAA3XLpw0OrBxsfVcM+yuHTi4CwYRfJVTx/CPP8lA== X-Received: by 2002:adf:f0c8:0:b0:2e5:d4f4:c43b with SMTP id x8-20020adff0c8000000b002e5d4f4c43bmr4684807wro.55.1681913436518; Wed, 19 Apr 2023 07:10:36 -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.58.2023.04.19.07.10.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 07:10:35 -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 05/19] md: use __bio_add_page to add single page Date: Wed, 19 Apr 2023 16:09:15 +0200 Message-Id: <20230419140929.5924-6-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-block@vger.kernel.org From: Johannes Thumshirn The md-raid superblock writing 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-of_-by: Johannes Thumshirn Reviewed-by: Damien Le Moal Acked-by: Song Liu --- drivers/md/md.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 13321dbb5fbc..20b9cd7c2f39 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -958,7 +958,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev, atomic_inc(&rdev->nr_pending); bio->bi_iter.bi_sector = sector; - bio_add_page(bio, page, size, 0); + __bio_add_page(bio, page, size, 0); bio->bi_private = rdev; bio->bi_end_io = super_written; @@ -999,7 +999,7 @@ int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, bio.bi_iter.bi_sector = sector + rdev->new_data_offset; else bio.bi_iter.bi_sector = sector + rdev->data_offset; - bio_add_page(&bio, page, size, 0); + __bio_add_page(&bio, page, size, 0); submit_bio_wait(&bio);