From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755393AbYD2Hkn (ORCPT ); Tue, 29 Apr 2008 03:40:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759894AbYD2Hk2 (ORCPT ); Tue, 29 Apr 2008 03:40:28 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:51891 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759036AbYD2Hk1 (ORCPT ); Tue, 29 Apr 2008 03:40:27 -0400 Date: Tue, 29 Apr 2008 16:40:02 +0900 From: KOSAKI Motohiro To: KAMEZAWA Hiroyuki , Mel Gorman , LKML , Andrew Morton Subject: [PATCH] on memoryless node, /proc/pagetypeinfo is displayed slightly funny output. Cc: kosaki.motohiro@jp.fujitsu.com Message-Id: <20080429162859.3540.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.42 [ja] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mel, I make patch of solve trivial pagetypeinfo problem. please review it. ================================================================= on memoryless node, /proc/pagetypeinfo is displayed slightly funny output. this patch fix it. output example (header is outputed, but no data is outputed) -------------------------------------------------------------- Page block order: 14 Pages per block: 16384 Free pages count per migrate type at order 0 1 2 3 4 5 \ 6 7 8 9 10 11 12 13 14 15 16 Number of blocks type Unmovable Reclaimable Movable Reserve Isolate Page block order: 14 Pages per block: 16384 Free pages count per migrate type at order 0 1 2 3 4 5 \ 6 7 8 9 10 11 12 13 14 15 16 Signed-off-by: KOSAKI Motohiro CC: KAMEZAWA Hiroyuki CC: Mel Gorman --- mm/vmstat.c | 4 ++++ 1 file changed, 4 insertions(+) Index: b/mm/vmstat.c =================================================================== --- a/mm/vmstat.c 2008-04-29 16:48:58.000000000 +0900 +++ b/mm/vmstat.c 2008-04-29 16:58:33.000000000 +0900 @@ -638,6 +638,10 @@ static int pagetypeinfo_show(struct seq_ { pg_data_t *pgdat = (pg_data_t *)arg; + /* check memoryless ndoe*/ + if (!node_state(pgdat->node_id, N_HIGH_MEMORY)) + return 0; + seq_printf(m, "Page block order: %d\n", pageblock_order); seq_printf(m, "Pages per block: %lu\n", pageblock_nr_pages); seq_putc(m, '\n');