From patchwork Tue May 2 10:19:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13228726 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 5F2E7C7EE21 for ; Tue, 2 May 2023 10:23:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233973AbjEBKXT (ORCPT ); Tue, 2 May 2023 06:23:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233929AbjEBKWK (ORCPT ); Tue, 2 May 2023 06:22:10 -0400 Received: from esa5.hgst.iphmx.com (esa5.hgst.iphmx.com [216.71.153.144]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A89675B9D; Tue, 2 May 2023 03:21:40 -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=1683022901; x=1714558901; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Izz1m415iRpIH2KEmuCSasFE37owqNrtjCwL859ZmdU=; b=LdsRmNR1IC2Q89iuivhGfyk907dU89Z18vFzBYZE09YfHg6+LUj7cX5E WPMdSXLCegkuVNohBsijYMgpvFZ6Tv3bYt2Oc4BmWmObCwbyoBfseYG5c cm7Vk9NKSMS75cUk4UDp4/QpEjBPEOJfXXHekM0B8378IMQ1IFbSALhrJ lZ5+dEA3zCSY5xgC1fMzSY0DLtt1YnzMMpL5injsFOojASzBUrKD82nLP A8mZ6UIDem9uCkDg9C9jFa6nO2MGJmARwcMx0g/GXoVbDGZSbpuN2eC6i MN9KjvNYm4WHWeSaTW0EvY4CIzjWIfKxHrx3ZrjMGqvb75hcrXoC5LpOC w==; X-IronPort-AV: E=Sophos;i="5.99,243,1677513600"; d="scan'208";a="229597951" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 02 May 2023 18:21:41 +0800 IronPort-SDR: kYhDrT9Rht639ejdBqfDRWY51dwV+6R80V+028lXKwnTIFIqGGgNUY0FNPd7bkSMe/1IedS/yE cQZtXVTKZLo6vJdj+JQpsdBTjp9hglQfWPt7a66GT/bEsLpUy+AHcJnQhWxHyxVE69RZB4S3TL f5NWzu1aLU+GMHI6bVgZ1JrFWxkmyVsgHCempxuVBUb9bDF3v1MXUdlhl6o3gARTfHlWn4Xssi fgEYdLIuxyMkLCn/h2wm6lyPuhGEZtdLBazt6hRI7Bi2kbAArOYNkVwNtiWTlCj5zLsBVBF17k QQc= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 02 May 2023 02:31:27 -0700 IronPort-SDR: 8hfezwIRYSWrrJUCjb8qjdEWmvQTAb8oREcSmYVL+8wk37Pg8Tp8roG1ZW+mjz9+6QAe4BsYpR EmWDRLcNeuJA92n5AIBbxiEh8eaf7kNTQoJEaoTjt7fYdn6r17LR46CVYDGJSihbaVMPma1L+u Irr0Z59+CdymlR+nAOTRZX3GKZJBGdjXU2UbPpLAYvOc4YKURimKOUi/xKoEJ7xmEC5Nk9TAiH owgOpkXcZgnwpHauY5btjBdZk+mI0uRcc4XS7SdsdzmLtvgoeCacNXPcdywNwlmur79/2ZnvYn +MY= WDCIronportException: Internal Received: from myd008205.ad.shared (HELO localhost.localdomain) ([10.225.1.100]) by uls-op-cesaip02.wdc.com with ESMTP; 02 May 2023 03:21:37 -0700 From: Johannes Thumshirn To: "axboe @ kernel . dk" Cc: agruenba@redhat.com, cluster-devel@redhat.com, damien.lemoal@wdc.com, dm-devel@redhat.com, hare@suse.de, hch@lst.de, jfs-discussion@lists.sourceforge.net, kch@nvidia.com, linux-block@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, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v5 14/20] md: raid1: use __bio_add_page for adding single page to bio Date: Tue, 2 May 2023 12:19:28 +0200 Message-Id: <20230502101934.24901-15-johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230502101934.24901-1-johannes.thumshirn@wdc.com> References: <20230502101934.24901-1-johannes.thumshirn@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The sync request 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. Reviewed-by: Damien Le Moal Acked-by: Song Liu Signed-off-by: Johannes Thumshirn --- drivers/md/raid1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8283ef177f6c..ff89839455ec 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2917,7 +2917,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr, * won't fail because the vec table is big * enough to hold all these pages */ - bio_add_page(bio, page, len, 0); + __bio_add_page(bio, page, len, 0); } } nr_sectors += len>>9;