From patchwork Wed Jun 29 10:32:16 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liang Li X-Patchwork-Id: 9204807 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id ED23860757 for ; Wed, 29 Jun 2016 10:41:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DDCEA2863B for ; Wed, 29 Jun 2016 10:41:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D2D0528654; Wed, 29 Jun 2016 10:41:57 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham 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 3553F2863B for ; Wed, 29 Jun 2016 10:41:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752232AbcF2KkH (ORCPT ); Wed, 29 Jun 2016 06:40:07 -0400 Received: from mga14.intel.com ([192.55.52.115]:37824 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752114AbcF2Kj6 (ORCPT ); Wed, 29 Jun 2016 06:39:58 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP; 29 Jun 2016 03:39:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,546,1459839600"; d="scan'208";a="837269296" Received: from ll.sh.intel.com (HELO localhost) ([10.239.13.123]) by orsmga003.jf.intel.com with ESMTP; 29 Jun 2016 03:39:54 -0700 From: Liang Li To: mst@redhat.com Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org, dgilbert@redhat.com, quintela@redhat.com, Liang Li , Andrew Morton , Mel Gorman , Paolo Bonzini , Cornelia Huck , Amit Shah Subject: [PATCH v2 kernel 3/7] mm: add a function to get the max pfn Date: Wed, 29 Jun 2016 18:32:16 +0800 Message-Id: <1467196340-22079-4-git-send-email-liang.z.li@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467196340-22079-1-git-send-email-liang.z.li@intel.com> References: <1467196340-22079-1-git-send-email-liang.z.li@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Expose the function to get the max pfn, so it can be used in the virtio-balloon device driver. Signed-off-by: Liang Li Cc: Andrew Morton Cc: Mel Gorman Cc: Michael S. Tsirkin Cc: Paolo Bonzini Cc: Cornelia Huck Cc: Amit Shah --- mm/page_alloc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6903b69..2083b40 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4515,6 +4515,12 @@ void show_free_areas(unsigned int filter) show_swap_cache_info(); } +unsigned long get_max_pfn(void) +{ + return max_pfn; +} +EXPORT_SYMBOL(get_max_pfn); + static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref) { zoneref->zone = zone;