From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759501AbdENSkh (ORCPT ); Sun, 14 May 2017 14:40:37 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:58217 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759312AbdENShZ (ORCPT ); Sun, 14 May 2017 14:37:25 -0400 Message-Id: <20170514183613.080486673@linutronix.de> User-Agent: quilt/0.63-1 Date: Sun, 14 May 2017 20:27:24 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Ingo Molnar , Steven Rostedt , Mark Rutland , Mel Gorman , Greg Kroah-Hartman Subject: [patch 08/18] mm: Adjust system_state check References: <20170514182716.347236777@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=mm--Adjust-system_state-check.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To enable smp_processor_id() and might_sleep() debug checks earlier, it's required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING. get_nid_for_pfn() checks for system_state == BOOTING to decide whether to use early_pfn_to_nid() when CONFIG_DEFERRED_STRUCT_PAGE_INIT=y. That check is dubious, because the switch to state RUNNING happes way after page_alloc_init_late() has been invoked. Change the check to less than RUNNING state so it covers the new intermediate states as well. Signed-off-by: Thomas Gleixner Cc: Mel Gorman Cc: Greg Kroah-Hartman --- drivers/base/node.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -377,7 +377,7 @@ static int __ref get_nid_for_pfn(unsigne if (!pfn_valid_within(pfn)) return -1; #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT - if (system_state == SYSTEM_BOOTING) + if (system_state < SYSTEM_RUNNING) return early_pfn_to_nid(pfn); #endif page = pfn_to_page(pfn);