1 files changed, 20 insertions, 6 deletions

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 2047465cd27c..be211a582930 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -27,6 +27,8 @@
 #include <linux/page-isolation.h>
 #include <linux/pfn.h>
 #include <linux/suspend.h>
+#include <linux/mm_inline.h>
+#include <linux/firmware-map.h>
 
 #include <asm/tlbflush.h>
 
@@ -71,7 +73,9 @@ static void get_page_bootmem(unsigned long info,  struct page *page, int type)
         atomic_inc(&page->_count);
 }
 
-void put_page_bootmem(struct page *page)
+/* 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)
 {
         int type;
 
@@ -520,6 +524,9 @@ int __ref add_memory(int nid, u64 start, u64 size)
                 BUG_ON(ret);
         }
 
+        /* create new memmap entry */
+        firmware_map_add_hotplug(start, start + size, "System RAM");
+
         goto out;
 
 error:
@@ -672,15 +679,18 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
                 if (!ret) { /* Success */
                         list_add_tail(&page->lru, &source);
                         move_pages--;
+                        inc_zone_page_state(page, NR_ISOLATED_ANON +
+                                            page_is_file_cache(page));
+
                 } else {
                         /* Becasue we don't have big zone->lock. we should
                            check this again here. */
                         if (page_count(page))
                                 not_managed++;
 #ifdef CONFIG_DEBUG_VM
-                        printk(KERN_INFO "removing from LRU failed"
-                                         " %lx/%d/%lx\n",
-                                pfn, page_count(page), page->flags);
+                        printk(KERN_ALERT "removing pfn %lx from LRU failed\n",
+                               pfn);
+                        dump_page(page);
 #endif
                 }
         }
@@ -694,7 +704,7 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
         if (list_empty(&source))
                 goto out;
         /* this function returns # of failed pages */
-        ret = migrate_pages(&source, hotremove_migrate_alloc, 0);
+        ret = migrate_pages(&source, hotremove_migrate_alloc, 0, 1);
 
 out:
         return ret;
@@ -747,7 +757,7 @@ check_pages_isolated(unsigned long start_pfn, unsigned long end_pfn)
         return offlined;
 }
 
-int offline_pages(unsigned long start_pfn,
+static int offline_pages(unsigned long start_pfn,
                   unsigned long end_pfn, unsigned long timeout)
 {
         unsigned long pfn, nr_pages, expire;
@@ -849,6 +859,10 @@ repeat:
 
         setup_per_zone_wmarks();
         calculate_zone_inactive_ratio(zone);
+        if (!node_present_pages(node)) {
+                node_clear_state(node, N_HIGH_MEMORY);
+                kswapd_stop(node);
+        }
 
         vm_total_pages = nr_free_pagecache_pages();
         writeback_set_ratelimit();