From patchwork Tue Jan 12 09:34:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 12012879 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=-13.8 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 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 B4864C433DB for ; Tue, 12 Jan 2021 09:34:45 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 58BC622E02 for ; Tue, 12 Jan 2021 09:34:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 58BC622E02 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id BB955100EBB85; Tue, 12 Jan 2021 01:34:44 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=192.55.52.93; helo=mga11.intel.com; envelope-from=dan.j.williams@intel.com; receiver= Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id AE645100EBB78 for ; Tue, 12 Jan 2021 01:34:42 -0800 (PST) IronPort-SDR: y9yyGurEOkGr1YDU/IFFYYg5D3gwxN30VOJFNupbdHdRszDgplvDlAMneITNLKRJfqTiVoR85A Wub46xaUptQg== X-IronPort-AV: E=McAfee;i="6000,8403,9861"; a="174503029" X-IronPort-AV: E=Sophos;i="5.79,341,1602572400"; d="scan'208";a="174503029" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jan 2021 01:34:42 -0800 IronPort-SDR: KALVxv4kl/bC4nRvYL9sEK1WXA26sL3/CdeeJ3rm/UmQykRn2Gr0fhm/Mye3XZZQOzQd5XOq+3 yjZ5udYclLiw== X-IronPort-AV: E=Sophos;i="5.79,341,1602572400"; d="scan'208";a="363445952" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.25]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jan 2021 01:34:42 -0800 Subject: [PATCH v2 1/5] mm: Move pfn_to_online_page() out of line From: Dan Williams To: linux-mm@kvack.org Date: Tue, 12 Jan 2021 01:34:42 -0800 Message-ID: <161044408207.1482714.1125458890762969867.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <161044407603.1482714.16630477578392768273.stgit@dwillia2-desk3.amr.corp.intel.com> References: <161044407603.1482714.16630477578392768273.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-3-g996c MIME-Version: 1.0 Message-ID-Hash: Q7EMOE5KVZ47T7PHU7IKHEEXBFUNJXVR X-Message-ID-Hash: Q7EMOE5KVZ47T7PHU7IKHEEXBFUNJXVR X-MailFrom: dan.j.williams@intel.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: David Hildenbrand , Michal Hocko , linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: pfn_to_online_page() is already too large to be a macro or an inline function. In anticipation of further logic changes / growth, move it out of line. No functional change, just code movement. Cc: David Hildenbrand Reported-by: Michal Hocko Signed-off-by: Dan Williams Reviewed-by: David Hildenbrand Reviewed-by: Oscar Salvador --- include/linux/memory_hotplug.h | 17 +---------------- mm/memory_hotplug.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+), 16 deletions(-) diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 15acce5ab106..3d99de0db2dd 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -16,22 +16,7 @@ struct resource; struct vmem_altmap; #ifdef CONFIG_MEMORY_HOTPLUG -/* - * Return page for the valid pfn only if the page is online. All pfn - * walkers which rely on the fully initialized page->flags and others - * should use this rather than pfn_valid && pfn_to_page - */ -#define pfn_to_online_page(pfn) \ -({ \ - struct page *___page = NULL; \ - unsigned long ___pfn = pfn; \ - unsigned long ___nr = pfn_to_section_nr(___pfn); \ - \ - if (___nr < NR_MEM_SECTIONS && online_section_nr(___nr) && \ - pfn_valid_within(___pfn)) \ - ___page = pfn_to_page(___pfn); \ - ___page; \ -}) +struct page *pfn_to_online_page(unsigned long pfn); /* * Types for free bootmem stored in page->lru.next. These have to be in diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index f9d57b9be8c7..55a69d4396e7 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -300,6 +300,22 @@ static int check_hotplug_memory_addressable(unsigned long pfn, return 0; } +/* + * Return page for the valid pfn only if the page is online. All pfn + * walkers which rely on the fully initialized page->flags and others + * should use this rather than pfn_valid && pfn_to_page + */ +struct page *pfn_to_online_page(unsigned long pfn) +{ + unsigned long nr = pfn_to_section_nr(pfn); + + if (nr < NR_MEM_SECTIONS && online_section_nr(nr) && + pfn_valid_within(pfn)) + return pfn_to_page(pfn); + return NULL; +} +EXPORT_SYMBOL_GPL(pfn_to_online_page); + /* * Reasonably generic function for adding memory. It is * expected that archs that support memory hotplug will