From patchwork Wed May 31 11:50:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13262064 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 81E14C8300C for ; Wed, 31 May 2023 11:51:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235669AbjEaLvV (ORCPT ); Wed, 31 May 2023 07:51:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235567AbjEaLvQ (ORCPT ); Wed, 31 May 2023 07:51:16 -0400 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0951183; Wed, 31 May 2023 04:51:10 -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=1685533870; x=1717069870; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KhIiE2PZNX0ldPMtUgXTcFhOjFzcO4m6Vc6He+n9TMM=; b=TBBrPYzJ7ZU2d1Nq5BQoqyu7sdANp60AD6IY+UEwPeYyhtm1rBoqukhX 8NWTK+89yMK+pxwAegFMHoGCL5OEinGhElVEu3r5pV2mvutnoCsa4Hisv 5CNF06uqvcyInd97/uPvOEY9BNyiOVaTnyf1Qekjoj2pAkKWF++Z0sO4+ Wj3DYSQstdbhZa3eVqGaOXDDwYLzcmTZ/6AekFG5NlAF3ofdnVnsjaztd xbeiWzfBuoL1+wHSiQ6MO4IqfneudxIJE76dJjj5flyajdXzM5vOwDwb8 5QELaXqjoJT2VRX//8iPS0IeinWe7rlYUI9sYSTdi4qQlfLRcEfWGIhY0 A==; X-IronPort-AV: E=Sophos;i="6.00,207,1681142400"; d="scan'208";a="336547921" 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 19:51:10 +0800 IronPort-SDR: 2PxdtXov8oYfZVM9o12Jf6wJgWNWE309SN0n4KcVmjmuxtturomPGQQHSQ1IGRHv3goSM5iKFa ZX4rKDsA+9WtVB9Hy6tf+AD3m1GOrmkPt/PG5uAl71sZhFMDq5g2jptfYwKxE3/vFaU997Fa3D q129oNy6nwS1zpH/eUui/d8kZQF8aBw7fxQEP9y5Nsuns87Mn2pG2e+Nqn2uB97spt9Y5q3J17 Qu0sQf9QFjoaUMikfTyeq6/+DjLrFNwXYVGC+DnFmiW41Ktj+yKxnYjuw7OSc54Kz6aC0/ngYs sJo= 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 04:06:03 -0700 IronPort-SDR: f4sky3ehrJxiT/WAHaDyDgGjgkEGaBVQ9Ynqzb+9FpjL0wrWalF1YoF39q6U55+/vA10v+md4S xA+EZ1AAvJbX4CPvXm2q38H3efX7qrlaeAvxzz0OHLkK/u2zsBNbVKWqTmZi71JeCHDpbVB39S aUtkeULE6SgapnBoQdZNAscRSiR6/B2TGee/piMikW+A9bCZVdTSYmVNk+gXPXJSo+BoUGRM1S G6csNNGPboiDcVMzRkpPA8s+7n4Mf/m2BO4bnujYmZkdKcmmY1nC5gkfsQ85PydSyrrQfCFnhg xVI= 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 04:51:08 -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 06/20] md: raid5-log: use __bio_add_page to add single page Date: Wed, 31 May 2023 04:50:29 -0700 Message-Id: <832a810d6c9e71f88b0a39cb076a8c70e8bcb821.1685532726.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 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. Reviewed-by: Christoph Hellwig Reviewed-by: Damien Le Moal Acked-by: Song Liu Signed-off-by: Johannes Thumshirn --- 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);