From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F4124C2B9F8 for ; Tue, 25 May 2021 08:09:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2D33613F9 for ; Tue, 25 May 2021 08:09:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231223AbhEYILL (ORCPT ); Tue, 25 May 2021 04:11:11 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:3999 "EHLO szxga06-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231794AbhEYIJP (ORCPT ); Tue, 25 May 2021 04:09:15 -0400 Received: from dggems702-chm.china.huawei.com (unknown [172.30.72.58]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4Fq5lF5NPpzmbSD; Tue, 25 May 2021 15:47:21 +0800 (CST) Received: from dggpeml500019.china.huawei.com (7.185.36.137) by dggems702-chm.china.huawei.com (10.3.19.179) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 25 May 2021 15:49:41 +0800 Received: from huawei.com (10.175.124.27) by dggpeml500019.china.huawei.com (7.185.36.137) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 25 May 2021 15:49:41 +0800 From: Wu Bo To: , , , , , CC: , Subject: [PATCH 2/2] fs: direct-io: use DIV_ROUND_UP helper macro for calculations Date: Tue, 25 May 2021 16:15:20 +0800 Message-ID: <1621930520-515336-3-git-send-email-wubo40@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1621930520-515336-1-git-send-email-wubo40@huawei.com> References: <1621930520-515336-1-git-send-email-wubo40@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpeml500019.china.huawei.com (7.185.36.137) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wu Bo Replace open coded divisor calculations with the DIV_ROUND_UP kernel macro for better readability. Signed-off-by: Wu Bo --- fs/direct-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/direct-io.c b/fs/direct-io.c index b2e86e7..6e7d402 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -195,7 +195,7 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio) iov_iter_advance(sdio->iter, ret); ret += sdio->from; sdio->head = 0; - sdio->tail = (ret + PAGE_SIZE - 1) / PAGE_SIZE; + sdio->tail = DIV_ROUND_UP(ret, PAGE_SIZE); sdio->to = ((ret - 1) & (PAGE_SIZE - 1)) + 1; return 0; } -- 1.8.3.1