From patchwork Thu Nov 22 10:06:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 10693831 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A67E25A4 for ; Thu, 22 Nov 2018 10:07:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9862B2BA1E for ; Thu, 22 Nov 2018 10:07:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8C2F32BAB3; Thu, 22 Nov 2018 10:07:29 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7719A2BA1E for ; Thu, 22 Nov 2018 10:07:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393836AbeKVUqJ (ORCPT ); Thu, 22 Nov 2018 15:46:09 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47054 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387574AbeKVUqI (ORCPT ); Thu, 22 Nov 2018 15:46:08 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1C92E307D860; Thu, 22 Nov 2018 10:07:23 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-206.ams2.redhat.com [10.36.116.206]) by smtp.corp.redhat.com (Postfix) with ESMTP id EDE30282CD; Thu, 22 Nov 2018 10:07:19 +0000 (UTC) From: David Hildenbrand To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@linuxdriverproject.org, linux-fsdevel@vger.kernel.org, linux-pm@vger.kernel.org, xen-devel@lists.xenproject.org, kexec-ml , pv-drivers@vmware.com, David Hildenbrand , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Andrew Morton , Matthew Wilcox , Michal Hocko , "Michael S. Tsirkin" Subject: [PATCH v2 7/8] PM / Hibernate: use pfn_to_online_page() Date: Thu, 22 Nov 2018 11:06:26 +0100 Message-Id: <20181122100627.5189-8-david@redhat.com> In-Reply-To: <20181122100627.5189-1-david@redhat.com> References: <20181122100627.5189-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Thu, 22 Nov 2018 10:07:23 +0000 (UTC) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Let's use pfn_to_online_page() instead of pfn_to_page() when checking for saveable pages to not save/restore offline memory sections. Cc: "Rafael J. Wysocki" Cc: Pavel Machek Cc: Len Brown Cc: Andrew Morton Cc: Matthew Wilcox Cc: Michal Hocko Cc: "Michael S. Tsirkin" Suggested-by: Michal Hocko Acked-by: Michal Hocko Acked-by: Pavel Machek Acked-by: Rafael J. Wysocki Signed-off-by: David Hildenbrand --- kernel/power/snapshot.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 640b2034edd6..87e6dd57819f 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1215,8 +1215,8 @@ static struct page *saveable_highmem_page(struct zone *zone, unsigned long pfn) if (!pfn_valid(pfn)) return NULL; - page = pfn_to_page(pfn); - if (page_zone(page) != zone) + page = pfn_to_online_page(pfn); + if (!page || page_zone(page) != zone) return NULL; BUG_ON(!PageHighMem(page)); @@ -1277,8 +1277,8 @@ static struct page *saveable_page(struct zone *zone, unsigned long pfn) if (!pfn_valid(pfn)) return NULL; - page = pfn_to_page(pfn); - if (page_zone(page) != zone) + page = pfn_to_online_page(pfn); + if (!page || page_zone(page) != zone) return NULL; BUG_ON(PageHighMem(page));