mm, page_alloc: fix build_zonerefs_node()

[linux-2.6-microblaze.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bdc8f60..33ca8ca 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -128,7 +128,7 @@ static DEFINE_MUTEX(pcp_batch_high_lock);
 struct pagesets {
        local_lock_t lock;
 };
-static DEFINE_PER_CPU(struct pagesets, pagesets) __maybe_unused = {
+static DEFINE_PER_CPU(struct pagesets, pagesets) = {
        .lock = INIT_LOCAL_LOCK(lock),
 };
 
@@ -1108,6 +1108,9 @@ continue_merging:
 
                buddy_pfn = __find_buddy_pfn(pfn, order);
                buddy = page + (buddy_pfn - pfn);
+
+               if (!page_is_buddy(page, buddy, order))
+                       goto done_merging;
                buddy_mt = get_pageblock_migratetype(buddy);
 
                if (migratetype != buddy_mt
@@ -6128,7 +6131,7 @@ static int build_zonerefs_node(pg_data_t *pgdat, struct zoneref *zonerefs)
        do {
                zone_type--;
                zone = pgdat->node_zones + zone_type;
-               if (managed_zone(zone)) {
+               if (populated_zone(zone)) {
                        zoneref_set_zone(zone, &zonerefs[nr_zones++]);
                        check_highest_zone(zone_type);
                }
@@ -8364,6 +8367,7 @@ static int page_alloc_cpu_dead(unsigned int cpu)
        struct zone *zone;
 
        lru_add_drain_cpu(cpu);
+       mlock_page_drain_remote(cpu);
        drain_pages(cpu);
 
        /*