From f52407ce2deac76c87abc8211a63ea152ba72d54 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 21 Sep 2009 17:01:19 -0700 Subject: memory hotplug: alloc page from other node in memory online To initialize hotadded node, some pages are allocated. At that time, the node hasn't memory, this makes the allocation always fail. In such case, let's allocate pages from other nodes. Signed-off-by: Shaohua Li Signed-off-by: Yakui Zhao Cc: Mel Gorman Cc: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_cgroup.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'mm/page_cgroup.c') diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index f22b4ebbd8dc..3d535d594826 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -116,10 +116,16 @@ static int __init_refok init_section_page_cgroup(unsigned long pfn) nid = page_to_nid(pfn_to_page(pfn)); table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION; VM_BUG_ON(!slab_is_available()); - base = kmalloc_node(table_size, + if (node_state(nid, N_HIGH_MEMORY)) { + base = kmalloc_node(table_size, GFP_KERNEL | __GFP_NOWARN, nid); - if (!base) - base = vmalloc_node(table_size, nid); + if (!base) + base = vmalloc_node(table_size, nid); + } else { + base = kmalloc(table_size, GFP_KERNEL | __GFP_NOWARN); + if (!base) + base = vmalloc(table_size); + } } else { /* * We don't have to allocate page_cgroup again, but -- cgit v1.2.3