From: Dave Hansen We _know_ which node pages in general belong to, at least at a very gross level in node_{start,end}_pfn[]. Use those to target the allocations of pages. Signed-off-by: Andy Whitcroft Signed-off-by: Dave Hansen Signed-off-by: Andrew Morton --- 25-akpm/arch/i386/mm/discontig.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+) diff -puN arch/i386/mm/discontig.c~sparsemem-base-early_pfn_to_nid-works-before-sparse-is-initialized arch/i386/mm/discontig.c --- 25/arch/i386/mm/discontig.c~sparsemem-base-early_pfn_to_nid-works-before-sparse-is-initialized 2005-03-14 18:22:50.000000000 -0800 +++ 25-akpm/arch/i386/mm/discontig.c 2005-03-14 18:22:50.000000000 -0800 @@ -149,6 +149,21 @@ static void __init find_max_pfn_node(int BUG(); } +/* Find the owning node for a pfn. */ +int early_pfn_to_nid(unsigned long pfn) +{ + int nid; + + for_each_node(nid) { + if (node_end_pfn[nid] == 0) + break; + if (node_start_pfn[nid] <= pfn && node_end_pfn[nid] >= pfn) + return nid; + } + + return 0; +} + /* * Allocate memory for the pg_data_t for this node via a crude pre-bootmem * method. For node zero take this from the bottom of memory, for _