From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yasunori Goto Subject: [Patch 002/005](memory hotplug) align memmap to page size Date: Thu, 03 Apr 2008 14:40:18 +0900 Message-ID: <20080403143910.D1F8.E1E9C6FF@jp.fujitsu.com> References: <20080403140221.D1F2.E1E9C6FF@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080403140221.D1F2.E1E9C6FF@jp.fujitsu.com> Sender: linux-kernel-owner@vger.kernel.org To: Badari Pulavarty Cc: Andrew Morton , Linux Kernel ML , Yinghai Lu , linux-mm List-Id: linux-mm.kvack.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