From patchwork Tue May 30 15:49:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13260573 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 B88DFC7EE32 for ; Tue, 30 May 2023 15:50:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230402AbjE3PuD (ORCPT ); Tue, 30 May 2023 11:50:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232607AbjE3Ptq (ORCPT ); Tue, 30 May 2023 11:49:46 -0400 Received: from esa4.hgst.iphmx.com (esa4.hgst.iphmx.com [216.71.154.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5647C100; Tue, 30 May 2023 08:49:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1685461785; x=1716997785; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=I1+TGenMrGdtSWKYS446AepXRO4LZgePrjmNY71VmmU=; b=lY1S7XacT7XbJFt10xYyXmY5A8w7A6LoQLrr2ZkynFv+FypNtyH8VyTf kgm5nQIO/uuGuyJkfIUnpVl3hRhPzO2Ie0N7QIfj7YOT0sZq4+OSC4Xnl q8jJZ3coQ9tpeY6xa1MbXKP+/FU7pK2+jv2KanlRKoDx9PfiXYPjChzTB TKG64ufx6nfldfGLahYsq1EDiF2awDSLp/WillKuFOq9ewRGgylICvkim ecvQJ1mE2FgwL4Cn0FlJFd2bk4GM8KCPpZ8bq/6kWBc2gokKGZSX4Je7M QDt6yv8XMd0q4kKJLKZ0+5dNyZXy2x/J+plWcUlbiu0APixeEBWeBy4rm Q==; X-IronPort-AV: E=Sophos;i="6.00,204,1681142400"; d="scan'208";a="230129756" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 30 May 2023 23:49:44 +0800 IronPort-SDR: 1aN4DQRtLdZZ2xuHBZvGx6a1iRbsHy86wfqBlVdKzYIyS8dr1glidbjA62e848ZyoworKV3tzR QK/2y8lNRk+BE9woSojp2ub1PO5ZHiLzZ4qcYx6YDpWIm0JO7KampvmDHIAwsrmollFIf4QXPr bLR/DfF0erlChYZzljcDwWiWcFwcjUAicF8QX3e30eupRcHyli7wZkPX7ASP7U5Ercr8AaALNt +JORnz752cvHK3sJjbo7Ghd6Z9V9vh4YXgWIdcXKz0Or1u4FvpBMrD3/bV86dCmQ+twDOU4XG2 a9U= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 30 May 2023 08:04:38 -0700 IronPort-SDR: KJrqulCfq2cqwjkpQuj6PyVKpC28Y9PRziJGpvtZLpCh0rnCFASYlRta5kVMItHLPqq5rbqivp lMPfQqlHbxJojiNO1f2byMk3lcSCsyJM5076LR2t1Uk8MU+mMSei3mzF7GpXMo0mg3+kEecLxf OyMUtTmjzDB92M0Oo1Hytx+Eufwx2D2FdxOYnT1IorOXPeITVFL5E8NvDvefbboj9O9qo/Gmak p1SuxcEHaJrwbUasxNHzxhTj/f1bmxtqyWfrTpTKU/3g7I5gd2SasjsbToJ4cuAKPzx8T5MMe9 2F0= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 30 May 2023 08:49:41 -0700 From: Johannes Thumshirn To: Jens Axboe Cc: Christoph Hellwig , Hannes Reinecke , Chaitanya Kulkarni , Damien Le Moal , Ming Lei , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, dm-devel@redhat.com, Song Liu , linux-raid@vger.kernel.org, Mike Snitzer , Matthew Wilcox , Dave Kleikamp , jfs-discussion@lists.sourceforge.net, cluster-devel@redhat.com, Bob Peterson , Andreas Gruenbacher , Mikulas Patocka , gouhao@uniontech.com, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v6 05/20] md: use __bio_add_page to add single page Date: Tue, 30 May 2023 08:49:08 -0700 Message-Id: <8b046033b3b073d1ea91c45cd278b7aadd0b7e1e.1685461490.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org 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 Reviewed-by: Christoph Hellwig --- 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 8e344b4b3444..6a559a7e89c0 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -938,7 +938,7 @@ 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; @@ -979,7 +979,7 @@ 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);