memcg: oom notifier

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

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 089cc97..a4cfcdc 100644 (file)
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -389,11 +389,6 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
        int nid;
        int ret;
        struct memory_notify arg;
-       /*
-        * mutex to protect zone->pageset when it's still shared
-        * in onlined_pages()
-        */
-       static DEFINE_MUTEX(zone_pageset_mutex);
 
        arg.start_pfn = pfn;
        arg.nr_pages = nr_pages;
@@ -420,14 +415,14 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
         * This means the page allocator ignores this zone.
         * So, zonelist must be updated after online.
         */
-       mutex_lock(&zone_pageset_mutex);
+       mutex_lock(&zonelists_mutex);
        if (!populated_zone(zone))
                need_zonelists_rebuild = 1;
 
        ret = walk_system_ram_range(pfn, nr_pages, &onlined_pages,
                online_pages_range);
        if (ret) {
-               mutex_unlock(&zone_pageset_mutex);
+               mutex_unlock(&zonelists_mutex);
                printk(KERN_DEBUG "online_pages %lx at %lx failed\n",
                        nr_pages, pfn);
                memory_notify(MEM_CANCEL_ONLINE, &arg);
@@ -441,7 +436,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
        else
                zone_pcp_update(zone);
 
-       mutex_unlock(&zone_pageset_mutex);
+       mutex_unlock(&zonelists_mutex);
        setup_per_zone_wmarks();
        calculate_zone_inactive_ratio(zone);
        if (onlined_pages) {