libnvdimm/region: Initialize bad block for volatile namespaces

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

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 4fa8d84..e0fc963 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1258,6 +1258,12 @@ static bool __purge_vmap_area_lazy(unsigned long start, unsigned long end)
        if (unlikely(valist == NULL))
                return false;
 
+       /*
+        * First make sure the mappings are removed from all page-tables
+        * before they are freed.
+        */
+       vmalloc_sync_all();
+
        /*
         * TODO: to calculate a flush range without looping.
         * The list can be up to lazy_max_pages() elements.
@@ -3038,6 +3044,9 @@ EXPORT_SYMBOL(remap_vmalloc_range);
 /*
  * Implement a stub for vmalloc_sync_all() if the architecture chose not to
  * have one.
+ *
+ * The purpose of this function is to make sure the vmalloc area
+ * mappings are identical in all page-tables in the system.
  */
 void __weak vmalloc_sync_all(void)
 {