From patchwork Wed Mar 29 17:05:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13192942 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 82449C74A5B for ; Wed, 29 Mar 2023 17:08:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231509AbjC2RIA (ORCPT ); Wed, 29 Mar 2023 13:08:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231429AbjC2RHV (ORCPT ); Wed, 29 Mar 2023 13:07:21 -0400 Received: from esa4.hgst.iphmx.com (esa4.hgst.iphmx.com [216.71.154.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63A5344B8; Wed, 29 Mar 2023 10:07:06 -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=1680109626; x=1711645626; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OE8E56I6ppzvZpWL9ourgo+ma9SYticUs78Dn5RisJY=; b=PxX+FH6nzkHebAZdTV6YN02coE9mtYfeazPLQvat3wYcqi747+t3jOan nhlP/xkjYvoN6OEjN5ubbuEhsXWb7y0Q06FhIr5TTlfV66v6q/3Spe6eN VrypMGGlxQVwt52j3w3zghFl3tDLdYRqQekh9xajuMOMH62rcJCXqlHLb gqVLo8+4X4W/eL2LzbdlscB87Aww1WMIpcnYiZtzM9qlyPSipdU6ohieh atWRB2zZkusZEe3DlI20gWZzGr2X7gGBEgw5WeILUTSEoA8wq9pDuyaNj oNoBAz1yzjJJSP25ZYzOygHNa+UpohnpWs8h63mpepCCA6Aau82vBjxCW Q==; X-IronPort-AV: E=Sophos;i="5.98,301,1673884800"; d="scan'208";a="225092888" 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 Mar 2023 01:06:57 +0800 IronPort-SDR: k3j2V7dBSP/dRV/T8p6vcX3X3QJ0yPAnqsqO6QbmQusDyH2hAZlPdcXAHdkaImrqLgSpbDVc9V KXuyQ7jUnPuWHO51NROOJUpAduTv5HPnbJW7gEVwHv09Q+ymoQ1Uz4MkUd5LXLZ6D8qVOBBZSc Gi6R0ZKt0ogvIM5zGvwY2u6qcf4rowEHicMROhfAmDXv02bbJtVliMMJ8GkiAhUpRGO8PmKKw7 2X/90ZEjDghtTEXZBoorh3GhNpkjLDLserZDHXMArOtK9deyjzm7NQjecQL4SFkdefTrdu1GvQ R+U= Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 29 Mar 2023 09:23:07 -0700 IronPort-SDR: ciCGYrvEid1OWmTvYsKE9LmMoYXjBdNIDVHp7EEL3ugMQVAD8oiGyKQfXP4pYoV2q7+QBMlQDo 1RsU5Av/PLFMD/vk6LCXNuUcQdAkJoBUKZWl3B3KaNdEDeDAYfT/Xuet1ErBvWVzn4ReZCi6WZ 2tTbl4q+GT70HS8/O6AHUfSoleBf84i/l1JKzfYad7cBsXNtl7QFlQAHRj2CC4pi7SD6n4Katp jEWbuwgpWbRYo0gFrtFVkgDJiiBju+mZl9IO/VVqg+QMlS6vkxNs8qZeLGPjVwt4OicZWkznI4 o+w= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.72]) by uls-op-cesaip01.wdc.com with ESMTP; 29 Mar 2023 10:06:57 -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 , David Sterba , linux-btrfs@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 13/19] zram: use __bio_add_page for adding single page to bio Date: Wed, 29 Mar 2023 10:05:59 -0700 Message-Id: <339841b3b7ce6b2faf56bcaf9d92e298d878ef64.1680108414.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The zram writeback 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-off-by: Johannes Thumshirn Reviewed-by: Damien Le Moal Reviewed-by: Pankaj Raghav --- drivers/block/zram/zram_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index aa490da3cef2..9179bd0f248c 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -760,7 +760,7 @@ static ssize_t writeback_store(struct device *dev, REQ_OP_WRITE | REQ_SYNC); bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9); - bio_add_page(&bio, bvec.bv_page, bvec.bv_len, + __bio_add_page(&bio, bvec.bv_page, bvec.bv_len, bvec.bv_offset); /* * XXX: A single page IO would be inefficient for write