1 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 85854b867463..498ff8778fb6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -303,7 +303,7 @@ struct page {
  */
 #define put_page_testzero(p)                            \
         ({                                              \
-                BUG_ON(page_count(p) == 0);             \
+                BUG_ON(atomic_read(&(p)->_count) == -1);\
                 atomic_add_negative(-1, &(p)->_count);  \
         })
 
@@ -1051,5 +1051,11 @@ int shrink_slab(unsigned long scanned, gfp_t gfp_mask,
 void drop_pagecache(void);
 void drop_slab(void);
 
+#ifndef CONFIG_MMU
+#define randomize_va_space 0
+#else
+extern int randomize_va_space;
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */