From nobody Mon Feb 9 23:38:40 2026 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 78536C04A94 for ; Thu, 27 Jul 2023 01:16:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231320AbjG0BQ3 (ORCPT ); Wed, 26 Jul 2023 21:16:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230494AbjG0BQW (ORCPT ); Wed, 26 Jul 2023 21:16:22 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2D9E270E for ; Wed, 26 Jul 2023 18:16:21 -0700 (PDT) Received: from kwepemm600020.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4RBCVF1DzZzTm6Y; Thu, 27 Jul 2023 09:14:45 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by kwepemm600020.china.huawei.com (7.193.23.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Thu, 27 Jul 2023 09:16:19 +0800 From: Peng Zhang To: , CC: , , , , , , , ZhangPeng Subject: [PATCH 2/3] mm: kmsan: use helper macro offset_in_page() Date: Thu, 27 Jul 2023 09:16:11 +0800 Message-ID: <20230727011612.2721843-3-zhangpeng362@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230727011612.2721843-1-zhangpeng362@huawei.com> References: <20230727011612.2721843-1-zhangpeng362@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemm600020.china.huawei.com (7.193.23.147) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: ZhangPeng Use helper macro offset_in_page() to improve code readability. No functional modification involved. Signed-off-by: ZhangPeng Reviewed-by: Alexander Potapenko --- mm/kmsan/hooks.c | 2 +- mm/kmsan/shadow.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c index 4e3c3e60ba97..5d6e2dee5692 100644 --- a/mm/kmsan/hooks.c +++ b/mm/kmsan/hooks.c @@ -339,7 +339,7 @@ void kmsan_handle_dma(struct page *page, size_t offset,= size_t size, * internal KMSAN checks. */ while (size > 0) { - page_offset =3D addr % PAGE_SIZE; + page_offset =3D offset_in_page(addr); to_go =3D min(PAGE_SIZE - page_offset, (u64)size); kmsan_handle_dma_page((void *)addr, to_go, dir); addr +=3D to_go; diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c index c7de991f6d7f..966994268a01 100644 --- a/mm/kmsan/shadow.c +++ b/mm/kmsan/shadow.c @@ -145,7 +145,7 @@ void *kmsan_get_metadata(void *address, bool is_origin) return NULL; if (!page_has_metadata(page)) return NULL; - off =3D addr % PAGE_SIZE; + off =3D offset_in_page(addr); =20 return (is_origin ? origin_ptr_for(page) : shadow_ptr_for(page)) + off; } --=20 2.25.1