oprofile/x86: fix msr access to reserved counters

[safe/jmp/linux-2.6] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d79b925..8deb9d0 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -556,8 +556,9 @@ static void free_pcppages_bulk(struct zone *zone, int count,
                        page = list_entry(list->prev, struct page, lru);
                        /* must delete as __free_one_page list manipulates */
                        list_del(&page->lru);
-                       __free_one_page(page, zone, 0, migratetype);
-                       trace_mm_page_pcpu_drain(page, 0, migratetype);
+                       /* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */
+                       __free_one_page(page, zone, 0, page_private(page));
+                       trace_mm_page_pcpu_drain(page, 0, page_private(page));
                } while (--count && --batch_free && !list_empty(list));
        }
        spin_unlock(&zone->lock);
@@ -1222,10 +1223,10 @@ again:
                }
                spin_lock_irqsave(&zone->lock, flags);
                page = __rmqueue(zone, order, migratetype);
-               __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));
                spin_unlock(&zone->lock);
                if (!page)
                        goto failed;
+               __mod_zone_page_state(zone, NR_FREE_PAGES, -(1 << order));
        }
 
        __count_zone_vm_events(PGALLOC, zone, 1 << order);
@@ -2402,13 +2403,14 @@ int numa_zonelist_order_handler(ctl_table *table, int write,
 {
        char saved_string[NUMA_ZONELIST_ORDER_LEN];
        int ret;
+       static DEFINE_MUTEX(zl_order_mutex);
 
+       mutex_lock(&zl_order_mutex);
        if (write)
-               strncpy(saved_string, (char*)table->data,
-                       NUMA_ZONELIST_ORDER_LEN);
+               strcpy(saved_string, (char*)table->data);
        ret = proc_dostring(table, write, buffer, length, ppos);
        if (ret)
-               return ret;
+               goto out;
        if (write) {
                int oldval = user_zonelist_order;
                if (__parse_numa_zonelist_order((char*)table->data)) {
@@ -2421,7 +2423,9 @@ int numa_zonelist_order_handler(ctl_table *table, int write,
                } else if (oldval != user_zonelist_order)
                        build_all_zonelists();
        }
-       return 0;
+out:
+       mutex_unlock(&zl_order_mutex);
+       return ret;
 }
 
 
@@ -3995,7 +3999,7 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn,
                }
 
                /* Merge backward if suitable */
-               if (start_pfn < early_node_map[i].end_pfn &&
+               if (start_pfn < early_node_map[i].start_pfn &&
                                end_pfn >= early_node_map[i].start_pfn) {
                        early_node_map[i].start_pfn = start_pfn;
                        return;