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-rw-r--r--mm/memory_hotplug.c48
1 files changed, 16 insertions, 32 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 081b4d654ed..f5ba127b205 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -75,7 +75,7 @@ static struct resource *register_memory_resource(u64 start, u64 size)
res->end = start + size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, res) < 0) {
- printk("System RAM resource %pR cannot be added\n", res);
+ pr_debug("System RAM resource %pR cannot be added\n", res);
kfree(res);
res = NULL;
}
@@ -101,12 +101,9 @@ void get_page_bootmem(unsigned long info, struct page *page,
atomic_inc(&page->_count);
}
-/* reference to __meminit __free_pages_bootmem is valid
- * so use __ref to tell modpost not to generate a warning */
-void __ref put_page_bootmem(struct page *page)
+void put_page_bootmem(struct page *page)
{
unsigned long type;
- static DEFINE_MUTEX(ppb_lock);
type = (unsigned long) page->lru.next;
BUG_ON(type < MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE ||
@@ -116,17 +113,8 @@ void __ref put_page_bootmem(struct page *page)
ClearPagePrivate(page);
set_page_private(page, 0);
INIT_LIST_HEAD(&page->lru);
-
- /*
- * Please refer to comment for __free_pages_bootmem()
- * for why we serialize here.
- */
- mutex_lock(&ppb_lock);
- __free_pages_bootmem(page, 0);
- mutex_unlock(&ppb_lock);
- totalram_pages++;
+ free_reserved_page(page);
}
-
}
#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE
@@ -309,7 +297,7 @@ static int __meminit move_pfn_range_left(struct zone *z1, struct zone *z2,
/* can't move pfns which are higher than @z2 */
if (end_pfn > zone_end_pfn(z2))
goto out_fail;
- /* the move out part mast at the left most of @z2 */
+ /* the move out part must be at the left most of @z2 */
if (start_pfn > z2->zone_start_pfn)
goto out_fail;
/* must included/overlap */
@@ -775,29 +763,18 @@ EXPORT_SYMBOL_GPL(restore_online_page_callback);
void __online_page_set_limits(struct page *page)
{
- unsigned long pfn = page_to_pfn(page);
-
- if (pfn >= num_physpages)
- num_physpages = pfn + 1;
}
EXPORT_SYMBOL_GPL(__online_page_set_limits);
void __online_page_increment_counters(struct page *page)
{
- totalram_pages++;
-
-#ifdef CONFIG_HIGHMEM
- if (PageHighMem(page))
- totalhigh_pages++;
-#endif
+ adjust_managed_page_count(page, 1);
}
EXPORT_SYMBOL_GPL(__online_page_increment_counters);
void __online_page_free(struct page *page)
{
- ClearPageReserved(page);
- init_page_count(page);
- __free_page(page);
+ __free_reserved_page(page);
}
EXPORT_SYMBOL_GPL(__online_page_free);
@@ -918,6 +895,7 @@ static void node_states_set_node(int node, struct memory_notify *arg)
int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_type)
{
+ unsigned long flags;
unsigned long onlined_pages = 0;
struct zone *zone;
int need_zonelists_rebuild = 0;
@@ -994,9 +972,12 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ
return ret;
}
- zone->managed_pages += onlined_pages;
zone->present_pages += onlined_pages;
+
+ pgdat_resize_lock(zone->zone_pgdat, &flags);
zone->zone_pgdat->node_present_pages += onlined_pages;
+ pgdat_resize_unlock(zone->zone_pgdat, &flags);
+
if (onlined_pages) {
node_states_set_node(zone_to_nid(zone), &arg);
if (need_zonelists_rebuild)
@@ -1487,6 +1468,7 @@ static int __ref __offline_pages(unsigned long start_pfn,
unsigned long pfn, nr_pages, expire;
long offlined_pages;
int ret, drain, retry_max, node;
+ unsigned long flags;
struct zone *zone;
struct memory_notify arg;
@@ -1578,10 +1560,12 @@ repeat:
/* reset pagetype flags and makes migrate type to be MOVABLE */
undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
/* removal success */
- zone->managed_pages -= offlined_pages;
+ adjust_managed_page_count(pfn_to_page(start_pfn), -offlined_pages);
zone->present_pages -= offlined_pages;
+
+ pgdat_resize_lock(zone->zone_pgdat, &flags);
zone->zone_pgdat->node_present_pages -= offlined_pages;
- totalram_pages -= offlined_pages;
+ pgdat_resize_unlock(zone->zone_pgdat, &flags);
init_per_zone_wmark_min();