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-rw-r--r--mm/page_alloc.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4ea71bc70413..909adce33398 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6255,13 +6255,15 @@ static unsigned long __init zone_spanned_pages_in_node(int nid,
unsigned long *zone_end_pfn,
unsigned long *ignored)
{
+ unsigned long zone_low = arch_zone_lowest_possible_pfn[zone_type];
+ unsigned long zone_high = arch_zone_highest_possible_pfn[zone_type];
/* When hotadd a new node from cpu_up(), the node should be empty */
if (!node_start_pfn && !node_end_pfn)
return 0;
/* Get the start and end of the zone */
- *zone_start_pfn = arch_zone_lowest_possible_pfn[zone_type];
- *zone_end_pfn = arch_zone_highest_possible_pfn[zone_type];
+ *zone_start_pfn = clamp(node_start_pfn, zone_low, zone_high);
+ *zone_end_pfn = clamp(node_end_pfn, zone_low, zone_high);
adjust_zone_range_for_zone_movable(nid, zone_type,
node_start_pfn, node_end_pfn,
zone_start_pfn, zone_end_pfn);