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/sparse.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'mm/sparse.c') diff --git a/mm/sparse.c b/mm/sparse.c index da432d9f0ae..6ce4aab69e9 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -62,9 +62,12 @@ static struct mem_section noinline __init_refok *sparse_index_alloc(int nid) unsigned long array_size = SECTIONS_PER_ROOT * sizeof(struct mem_section); - if (slab_is_available()) - section = kmalloc_node(array_size, GFP_KERNEL, nid); - else + if (slab_is_available()) { + if (node_state(nid, N_HIGH_MEMORY)) + section = kmalloc_node(array_size, GFP_KERNEL, nid); + else + section = kmalloc(array_size, GFP_KERNEL); + } else section = alloc_bootmem_node(NODE_DATA(nid), array_size); if (section) -- cgit v1.2.3