Add linux-next specific files for 20160211

[karo-tx-linux.git] / mm / vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index fb42a5bffe4733f6e5b1e65d09009934ef2b781b..d4b2e34adae003214ef923b04bdd39867a19bf18 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -531,22 +531,21 @@ static void unmap_vmap_area(struct vmap_area *va)
 static void vmap_debug_free_range(unsigned long start, unsigned long end)
 {
        /*
-        * Unmap page tables and force a TLB flush immediately if
-        * CONFIG_DEBUG_PAGEALLOC is set. This catches use after free
-        * bugs similarly to those in linear kernel virtual address
-        * space after a page has been freed.
+        * Unmap page tables and force a TLB flush immediately if pagealloc
+        * debugging is enabled.  This catches use after free bugs similarly to
+        * those in linear kernel virtual address space after a page has been
+        * freed.
         *
-        * All the lazy freeing logic is still retained, in order to
-        * minimise intrusiveness of this debugging feature.
+        * All the lazy freeing logic is still retained, in order to minimise
+        * intrusiveness of this debugging feature.
         *
-        * This is going to be *slow* (linear kernel virtual address
-        * debugging doesn't do a broadcast TLB flush so it is a lot
-        * faster).
+        * This is going to be *slow* (linear kernel virtual address debugging
+        * doesn't do a broadcast TLB flush so it is a lot faster).
         */
-#ifdef CONFIG_DEBUG_PAGEALLOC
-       vunmap_page_range(start, end);
-       flush_tlb_kernel_range(start, end);
-#endif
+       if (debug_pagealloc_enabled()) {
+               vunmap_page_range(start, end);
+               flush_tlb_kernel_range(start, end);
+       }
 }
 
 /*