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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 954F5C4332F for ; Tue, 29 Mar 2022 12:51:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236792AbiC2MxO (ORCPT ); Tue, 29 Mar 2022 08:53:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237160AbiC2MxA (ORCPT ); Tue, 29 Mar 2022 08:53:00 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CF9E659E for ; Tue, 29 Mar 2022 05:50:51 -0700 (PDT) Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.54]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4KSTpZ4sXwzBrg5; Tue, 29 Mar 2022 20:46:46 +0800 (CST) Received: from dggpemm500002.china.huawei.com (7.185.36.229) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Tue, 29 Mar 2022 20:50:49 +0800 Received: from localhost.localdomain (10.175.112.125) by dggpemm500002.china.huawei.com (7.185.36.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Tue, 29 Mar 2022 20:50:48 +0800 From: Chen Wandun To: , , Subject: [PATCH 0/2] fix several contiguous memmap assumptions Date: Tue, 29 Mar 2022 21:09:26 +0800 Message-ID: <20220329130928.266323-1-chenwandun@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500002.china.huawei.com (7.185.36.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It isn't true for only SPARSEMEM configs to assume that a compound page has virtually contiguous page structs, so use nth_page to iterate each page. Inspired by: https://lore.kernel.org/linux-mm/20220204195852.1751729-8-willy@infradead.org/ Chen Wandun (2): mm: fix contiguous memmap assumptions about split page mm: fix contiguous memmap assumptions about alloc/free pages include/linux/mm.h | 2 ++ mm/compaction.c | 6 +++--- mm/huge_memory.c | 2 +- mm/page_alloc.c | 14 ++++++++------ 4 files changed, 14 insertions(+), 10 deletions(-) -- 2.18.0.huawei.25