From patchwork Wed Apr 19 14:09:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13216864 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 76136C77B7C for ; Wed, 19 Apr 2023 14:11:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232340AbjDSOLV (ORCPT ); Wed, 19 Apr 2023 10:11:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232321AbjDSOLE (ORCPT ); Wed, 19 Apr 2023 10:11:04 -0400 Received: from mail-wm1-f52.google.com (mail-wm1-f52.google.com [209.85.128.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7865116DE3; Wed, 19 Apr 2023 07:10:50 -0700 (PDT) Received: by mail-wm1-f52.google.com with SMTP id v20-20020a05600c471400b003ed8826253aso2318072wmo.0; Wed, 19 Apr 2023 07:10:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681913449; x=1684505449; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=D58hy5/Cr3/DLqz8bPLF+cijdU1EeyUsaB6+w7+K1A4=; b=UWJPcqSuKbMT1Xijz9te9jbnBjxc9yv0NKS5cCu1KTNliMRHQojBaGe1tTO9LJKVZz h8TecP5ilVW6J+CWyB2UxpT5OQ2ugIXNTEYADWgNKTypG2KlJBcOgbkVTsHZe75WQcfl pD8nYDA5m1kz/QHNyjE/9zsnF8PhkCtNk/SVvptZZjyZQmQ49JnwTUamyRkuD53+N0SX 01qwM6F39OySWOW+e011vCe873pqxhxqwcMqwS+2cUiygaAGrtkItI6SIxxE7HSwJnMc 84ZmTaE3HqwxgTV5O+/+3gDxUDWUepL29nHjOSnnijyph8wgVhsmE6Mcv6zHYtW5oCIv 9zPA== X-Gm-Message-State: AAQBX9e4d/uQqLJB4pK18Dg4LyxBeNWIgKoRl5rZFF5uA9XQ+Sw3xIIy ulD3IT44phoai+CrsqtdjPpCvxm/T9foQc/W X-Google-Smtp-Source: AKy350YVGom4jRqLlz1SlZT1B3VxAH80TCdfTvTrIcrTBS48HRxL8jnx3ehntNMClr8C3qNVzqHCog== X-Received: by 2002:a05:600c:24d:b0:3f0:373d:780 with SMTP id 13-20020a05600c024d00b003f0373d0780mr16769739wmj.34.1681913448956; Wed, 19 Apr 2023 07:10:48 -0700 (PDT) Received: from localhost.localdomain (aftr-62-216-205-204.dynamic.mnet-online.de. [62.216.205.204]) by smtp.googlemail.com with ESMTPSA id q17-20020a5d61d1000000b002faaa9a1721sm7612089wrv.58.2023.04.19.07.10.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 07:10:48 -0700 (PDT) From: Johannes Thumshirn To: axboe@kernel.dk Cc: johannes.thumshirn@wdc.com, agruenba@redhat.com, cluster-devel@redhat.com, damien.lemoal@wdc.com, dm-devel@redhat.com, dsterba@suse.com, hare@suse.de, hch@lst.de, jfs-discussion@lists.sourceforge.net, kch@nvidia.com, linux-block@vger.kernel.org, linux-btrfs@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, Damien Le Moal Subject: [PATCH v3 13/19] zram: use __bio_add_page for adding single page to bio Date: Wed, 19 Apr 2023 16:09:23 +0200 Message-Id: <20230419140929.5924-14-jth@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230419140929.5924-1-jth@kernel.org> References: <20230419140929.5924-1-jth@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Johannes Thumshirn 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 --- 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