From 653d22c0f5c41496c0e949ef5d141ab37c0b0580 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Date: Tue, 9 Dec 2008 13:14:20 -0800 Subject: [PATCH] page_cgroup should ignore empty nodes Fix a total bootup freeze on ia64. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Tested-by: Li Zefan <lizf@cn.fujitsu.com> Reported-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- mm/page_cgroup.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 0b3cbf090a6..ab27ff75051 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -49,6 +49,9 @@ static int __init alloc_node_page_cgroup(int nid) start_pfn = NODE_DATA(nid)->node_start_pfn; nr_pages = NODE_DATA(nid)->node_spanned_pages; + if (!nr_pages) + return 0; + table_size = sizeof(struct page_cgroup) * nr_pages; base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), -- 2.20.1