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-rw-r--r--include/linux/mm.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 85854b86746..498ff8778fb 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 */