mm: walk_memory_range(): fix typo in comment

[deliverable/linux.git] / mm / memory_hotplug.c

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index b81a367b9f39bb056cc4127a674e8a3dd4d2567d..57decb29e056f7ee1fa768488b0510c99c14d78c 100644 (file)
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1613,7 +1613,7 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
 /**
  * walk_memory_range - walks through all mem sections in [start_pfn, end_pfn)
  * @start_pfn: start pfn of the memory range
- * @end_pfn: end pft of the memory range
+ * @end_pfn: end pfn of the memory range
  * @arg: argument passed to func
  * @func: callback for each memory section walked
  *
@@ -1779,7 +1779,11 @@ void try_offline_node(int nid)
        for (i = 0; i < MAX_NR_ZONES; i++) {
                struct zone *zone = pgdat->node_zones + i;
 
-               if (zone->wait_table)
+               /*
+                * wait_table may be allocated from boot memory,
+                * here only free if it's allocated by vmalloc.
+                */
+               if (is_vmalloc_addr(zone->wait_table))
                        vfree(zone->wait_table);
        }
 
@@ -1801,7 +1805,7 @@ int __ref remove_memory(int nid, u64 start, u64 size)
        int retry = 1;
 
        start_pfn = PFN_DOWN(start);
-       end_pfn = start_pfn + PFN_DOWN(size);
+       end_pfn = PFN_UP(start + size - 1);
 
        /*
         * When CONFIG_MEMCG is on, one memory block may be used by other