Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754751AbZFDFSb (ORCPT ); Thu, 4 Jun 2009 01:18:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751493AbZFDFSY (ORCPT ); Thu, 4 Jun 2009 01:18:24 -0400 Received: from hera.kernel.org ([140.211.167.34]:54450 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750923AbZFDFSX (ORCPT ); Thu, 4 Jun 2009 01:18:23 -0400 Message-ID: <4A2758CB.9090404@kernel.org> Date: Wed, 03 Jun 2009 22:16:59 -0700 From: Yinghai Lu User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: Andrew Morton , mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com CC: mel@csn.ul.ie, cl@linux-foundation.org, suresh.b.siddha@intel.com, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, rusty@rustcorp.com.au, steiner@sgi.com, rientjes@google.com Subject: [RESEND PATCH] mm: clear N_HIGH_MEMORY map before se set it again -v2 References: <4A05269D.8000701@kernel.org> <20090512111623.GG25923@csn.ul.ie> <4A0A64FB.4080504@kernel.org> <20090513145950.GB28097@csn.ul.ie> <4A0C4910.7090508@kernel.org> <4A0C4A2A.6080009@kernel.org> <20090514095414.ba8356e5.akpm@linux-foundation.org> <4A0C4F67.5080802@kernel.org> <20090514102554.b3a36f19.akpm@linux-foundation.org> <4A0C563A.3020100@kernel.org> In-Reply-To: <4A0C563A.3020100@kernel.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1455 Lines: 41 in case some system strange SRAT table. some kind of small range. or with mem= boot option etc if the wrong SRAT table, have small range for some node. that node will not be onlined. In the early checking, the bit in node_states[N_HIGH_MEMORY] for the node is set even that node has less RAM like 1M, and it is not cleared before the bit is set again in the following loop according online nodes finally. for 64bit N_HIGH_MEMORY == N_NORMAL_MEMORY, so that works for 64 bit too v2: fix typo Signed-off-by: Yinghai Lu Tested-by: Jack Steiner --- mm/page_alloc.c | 5 +++++ 1 file changed, 5 insertions(+) Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c +++ linux-2.6/mm/page_alloc.c @@ -4041,6 +4041,11 @@ void __init free_area_init_nodes(unsigne early_node_map[i].start_pfn, early_node_map[i].end_pfn); + /* + * find_zone_movable_pfns_for_nodes/early_calculate_totalpages init + * that node_mask, clear it at first + */ + nodes_clear(node_states[N_HIGH_MEMORY]); /* Initialise every node */ mminit_verify_pageflags_layout(); setup_nr_node_ids(); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/