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-rw-r--r--mm/memory_hotplug.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 70df5c0d957e..71da5c98c9c1 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -26,7 +26,7 @@
26 26
27extern void zonetable_add(struct zone *zone, int nid, int zid, unsigned long pfn, 27extern void zonetable_add(struct zone *zone, int nid, int zid, unsigned long pfn,
28 unsigned long size); 28 unsigned long size);
29static void __add_zone(struct zone *zone, unsigned long phys_start_pfn) 29static int __add_zone(struct zone *zone, unsigned long phys_start_pfn)
30{ 30{
31 struct pglist_data *pgdat = zone->zone_pgdat; 31 struct pglist_data *pgdat = zone->zone_pgdat;
32 int nr_pages = PAGES_PER_SECTION; 32 int nr_pages = PAGES_PER_SECTION;
@@ -34,8 +34,15 @@ static void __add_zone(struct zone *zone, unsigned long phys_start_pfn)
34 int zone_type; 34 int zone_type;
35 35
36 zone_type = zone - pgdat->node_zones; 36 zone_type = zone - pgdat->node_zones;
37 if (!populated_zone(zone)) {
38 int ret = 0;
39 ret = init_currently_empty_zone(zone, phys_start_pfn, nr_pages);
40 if (ret < 0)
41 return ret;
42 }
37 memmap_init_zone(nr_pages, nid, zone_type, phys_start_pfn); 43 memmap_init_zone(nr_pages, nid, zone_type, phys_start_pfn);
38 zonetable_add(zone, nid, zone_type, phys_start_pfn, nr_pages); 44 zonetable_add(zone, nid, zone_type, phys_start_pfn, nr_pages);
45 return 0;
39} 46}
40 47
41extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn, 48extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
@@ -50,7 +57,11 @@ static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
50 if (ret < 0) 57 if (ret < 0)
51 return ret; 58 return ret;
52 59
53 __add_zone(zone, phys_start_pfn); 60 ret = __add_zone(zone, phys_start_pfn);
61
62 if (ret < 0)
63 return ret;
64
54 return register_new_memory(__pfn_to_section(phys_start_pfn)); 65 return register_new_memory(__pfn_to_section(phys_start_pfn));
55} 66}
56 67