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-rw-r--r--mm/memory_hotplug.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 1ae2b2cc3a54..70df5c0d957e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -91,8 +91,8 @@ static void grow_zone_span(struct zone *zone,
if (start_pfn < zone->zone_start_pfn)
zone->zone_start_pfn = start_pfn;
- if (end_pfn > old_zone_end_pfn)
- zone->spanned_pages = end_pfn - zone->zone_start_pfn;
+ zone->spanned_pages = max(old_zone_end_pfn, end_pfn) -
+ zone->zone_start_pfn;
zone_span_writeunlock(zone);
}
@@ -106,8 +106,8 @@ static void grow_pgdat_span(struct pglist_data *pgdat,
if (start_pfn < pgdat->node_start_pfn)
pgdat->node_start_pfn = start_pfn;
- if (end_pfn > old_pgdat_end_pfn)
- pgdat->node_spanned_pages = end_pfn - pgdat->node_start_pfn;
+ pgdat->node_spanned_pages = max(old_pgdat_end_pfn, end_pfn) -
+ pgdat->node_start_pfn;
}
int online_pages(unsigned long pfn, unsigned long nr_pages)