From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759429AbYDCFmN (ORCPT ); Thu, 3 Apr 2008 01:42:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754709AbYDCFl6 (ORCPT ); Thu, 3 Apr 2008 01:41:58 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:41790 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753271AbYDCFl6 (ORCPT ); Thu, 3 Apr 2008 01:41:58 -0400 Date: Thu, 03 Apr 2008 14:40:18 +0900 From: Yasunori Goto To: Badari Pulavarty Subject: [Patch 002/005](memory hotplug) align memmap to page size Cc: Andrew Morton , Linux Kernel ML , Yinghai Lu , linux-mm In-Reply-To: <20080403140221.D1F2.E1E9C6FF@jp.fujitsu.com> References: <20080403140221.D1F2.E1E9C6FF@jp.fujitsu.com> X-Mailer-Plugin: BkASPil for Becky!2 Ver.2.068 Message-Id: <20080403143910.D1F8.E1E9C6FF@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.45 [ja] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To free memmap easier, this patch aligns it to page size. Bootmem allocater may mix some objects in one pages. It's not good for freeing memmap of memory hot-remove. Signed-off-by: Yasunori Goto mm/sparse.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: current/mm/sparse.c =================================================================== --- current.orig/mm/sparse.c 2008-04-01 20:56:45.000000000 +0900 +++ current/mm/sparse.c 2008-04-01 20:58:52.000000000 +0900 @@ -263,8 +263,8 @@ if (map) return map; - map = alloc_bootmem_node(NODE_DATA(nid), - sizeof(struct page) * PAGES_PER_SECTION); + map = alloc_bootmem_pages_node(NODE_DATA(nid), + PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION)); return map; } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ -- Yasunori Goto