diff options
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 1fe76d963ac..70df5c0d957 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -69,12 +69,16 @@ int __add_pages(struct zone *zone, unsigned long phys_start_pfn, for (i = 0; i < nr_pages; i += PAGES_PER_SECTION) { err = __add_section(zone, phys_start_pfn + i); - if (err) + /* We want to keep adding the rest of the + * sections if the first ones already exist + */ + if (err && (err != -EEXIST)) break; } return err; } +EXPORT_SYMBOL_GPL(__add_pages); static void grow_zone_span(struct zone *zone, unsigned long start_pfn, unsigned long end_pfn) @@ -87,8 +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); } @@ -102,8 +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) |