From patchwork Wed May 31 11:50:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13262069 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 904B3C7EE2F for ; Wed, 31 May 2023 11:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235784AbjEaLwq (ORCPT ); Wed, 31 May 2023 07:52:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235775AbjEaLwY (ORCPT ); Wed, 31 May 2023 07:52:24 -0400 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D899E58; Wed, 31 May 2023 04:51:33 -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=1685533893; x=1717069893; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TtMwPwqoJmAQPgnjq7wocIny6svRrZPugVBgK7WOt6M=; b=dAagb1oJrMUjlLwI5o5PLywf1PDvQLESOeiLgKqLiPVyLN+MhCJHkDF4 Aw6lQAzT8Zl2Xhjeve4aYbeWcyZqUhuvSpOgLuFH7qaxyQ5dRkHfwJa8k AwMtGPSAcZ18jNGmMektvkGqAAE3wNVo8gg1tplyc++c853oparET7sGP YH5lykACilfJLr6SU22nYXMGDM5YVzlQSNrBKTdE7sBKyAQK/t7DfMnd4 7778ZN9SjlYlmR2N9WF9u+SnBuXE4AGnmuztaEMKQ1FBvETV/mrTXNk2R ie/hAY+TPFlNU0FJ7ID7oe3SMzLnXjYrjFxK5kbtQxof92vr0kiKyGWOK w==; X-IronPort-AV: E=Sophos;i="6.00,207,1681142400"; d="scan'208";a="336547943" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 31 May 2023 19:51:22 +0800 IronPort-SDR: g3GFSsy8lsCWuvsOXkeeKJ/nb4Io+oo+VwywW8yDXxGFnS89qPJcqGdnsdGmHFvjXnO+VLHzss x0ATX1+q9f4HuuOo3r4CSxUJ1yqpzkLCvckEXyMqWY8AhGlV/ZTb1L4Q/7+YC4kAxgZ9Vu8lU4 y9E93yhuwIXlm2oIt2XX6qp2f0S0C7yybQXHc7Lb5iPsJxoSz/Q/sGifViaIjB3UdVgShB6bLr 38tV1C/rpvE/jL4LmRhM3gkR0XjR7R3UCTyrmPWOhAsZKT1ENJosk63Bbzyk1ZLdnb4hTLcO8q gA0= 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; 31 May 2023 04:06:15 -0700 IronPort-SDR: lSLmR/VBj2pjG1BOKyzbzpWOt10LQ2v+W9nQSkfzvPSPIPVecgzRxwE+mTlymgLSKsZZ7JJYhd saR/IYHvebRwJso+xoYWje6G9oEb7N4eM1apcr9zWPZykON9DnRU0Pvqa3YoovOG9mo8KMnQix +59L8VmldaWJ3bDq+eFFGdKuoZg0eQew9RjzgnlQ9qsTIpDlvXIvDrTtcd9QfWAIOE87SHwlM8 bKsDPUc4+smximEMS+6wPCkGqM5hMJAvOL+JxbNTObAa1Db26lV7WOnHYrJwT8baEncOGR6XK/ IhQ= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 31 May 2023 04:51:20 -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 , gouha7@uniontech.com, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v7 10/20] zonefs: use __bio_add_page for adding single page to bio Date: Wed, 31 May 2023 04:50:33 -0700 Message-Id: <04c9978ccaa0fc9871cd4248356638d98daccf0c.1685532726.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 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. Acked-by: Damien Le Moal Reviewed-by: Christoph Hellwig Signed-off-by: Johannes Thumshirn --- 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)