diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index f12052dc23ff..f26fdc94393e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2877,20 +2877,23 @@ static void __init sort_node_map(void) cmp_node_active_region, NULL); } -/* Find the lowest pfn for a node. This depends on a sorted early_node_map */ +/* Find the lowest pfn for a node */ unsigned long __init find_min_pfn_for_node(unsigned long nid) { int i; - - /* Regions in the early_node_map can be in any order */ - sort_node_map(); + unsigned long min_pfn = ULONG_MAX; /* Assuming a sorted map, the first range found has the starting pfn */ for_each_active_range_index_in_nid(i, nid) - return early_node_map[i].start_pfn; + min_pfn = min(min_pfn, early_node_map[i].start_pfn); - printk(KERN_WARNING "Could not find start_pfn for node %lu\n", nid); - return 0; + if (min_pfn == ULONG_MAX) { + printk(KERN_WARNING + "Could not find start_pfn for node %lu\n", nid); + return 0; + } + + return min_pfn; } /** @@ -2939,6 +2942,9 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn) unsigned long nid; enum zone_type i; + /* Sort early_node_map as initialisation assumes it is sorted */ + sort_node_map(); + /* Record where the zone boundaries are */ memset(arch_zone_lowest_possible_pfn, 0, sizeof(arch_zone_lowest_possible_pfn)); |