From patchwork Thu Sep 2 12:12:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaohe Lin X-Patchwork-Id: 12471433 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 B6FB1C432BE for ; Thu, 2 Sep 2021 12:12:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3E7B960F42 for ; Thu, 2 Sep 2021 12:12:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3E7B960F42 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id D0E7D6B0071; Thu, 2 Sep 2021 08:12:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CBD4C8D0001; Thu, 2 Sep 2021 08:12:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BAC976B0073; Thu, 2 Sep 2021 08:12:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0095.hostedemail.com [216.40.44.95]) by kanga.kvack.org (Postfix) with ESMTP id AB8226B0071 for ; Thu, 2 Sep 2021 08:12:26 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 63A00DB52 for ; Thu, 2 Sep 2021 12:12:26 +0000 (UTC) X-FDA: 78542521092.02.5BD672F Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by imf13.hostedemail.com (Postfix) with ESMTP id A05FF1026595 for ; Thu, 2 Sep 2021 12:12:25 +0000 (UTC) Received: from dggeme703-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4H0fnz33K4z8vJ8; Thu, 2 Sep 2021 20:08:07 +0800 (CST) Received: from huawei.com (10.175.124.27) by dggeme703-chm.china.huawei.com (10.1.199.99) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.8; Thu, 2 Sep 2021 20:12:22 +0800 From: Miaohe Lin To: CC: , , , , , , , Subject: [PATCH v2 0/5] Cleanups and fixup for page_alloc Date: Thu, 2 Sep 2021 20:12:37 +0800 Message-ID: <20210902121242.41607-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggeme703-chm.china.huawei.com (10.1.199.99) X-CFilter-Loop: Reflected Authentication-Results: imf13.hostedemail.com; dkim=none; spf=pass (imf13.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.188 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com; dmarc=pass (policy=none) header.from=huawei.com X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: A05FF1026595 X-Stat-Signature: tbzneemx9399uudde6gxai45zgryx7o6 X-HE-Tag: 1630584745-519152 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi all, This series contains cleanups to remove meaningless VM_BUG_ON(), use helpers to simplify the code and remove obsolete comment. Also we avoid allocating highmem pages via alloc_pages_exact[_nid]. More details can be found in the respective changelogs. Thanks! v1->v2: collect Reviewed-by and Acked-by tag preserve valid comments for free_pcppages_bulk send patch "mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype" separately. s/__GFP_COMP/(__GFP_COMP|__GFP_HIGHMEM)/g throughout both alloc_pages_exact() and alloc_pages_exact_nid() Miaohe Lin (5): mm/page_alloc.c: remove meaningless VM_BUG_ON() in pindex_to_order() mm/page_alloc.c: simplify the code by using macro K() mm/page_alloc.c: fix obsolete comment in free_pcppages_bulk() mm/page_alloc.c: use helper function zone_spans_pfn() mm/page_alloc.c: avoid allocating highmem pages via alloc_pages_exact[_nid] mm/page_alloc.c | 34 ++++++++++++---------------------- 1 file changed, 12 insertions(+), 22 deletions(-)