1 files changed, 2 insertions, 2 deletions

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 72195602ded5..571130ee66d7 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -205,7 +205,7 @@ static void grow_zone_span(struct zone *zone, unsigned long start_pfn,
         zone_span_writelock(zone);
 
         old_zone_end_pfn = zone->zone_start_pfn + zone->spanned_pages;
-        if (start_pfn < zone->zone_start_pfn)
+        if (!zone->spanned_pages || start_pfn < zone->zone_start_pfn)
                 zone->zone_start_pfn = start_pfn;
 
         zone->spanned_pages = max(old_zone_end_pfn, end_pfn) -
@@ -220,7 +220,7 @@ static void grow_pgdat_span(struct pglist_data *pgdat, unsigned long start_pfn,
         unsigned long old_pgdat_end_pfn =
                 pgdat->node_start_pfn + pgdat->node_spanned_pages;
 
-        if (start_pfn < pgdat->node_start_pfn)
+        if (!pgdat->node_spanned_pages || start_pfn < pgdat->node_start_pfn)
                 pgdat->node_start_pfn = start_pfn;
 
         pgdat->node_spanned_pages = max(old_pgdat_end_pfn, end_pfn) -