mm: return boolean from page_has_private()

[net-next-2.6.git] / include / linux / page-flags.h

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index d07c0bb2203a2ed226b6a16d8d4b2a32def94958..13de789f0a5c1b8b47660dd37ca0c7da73dd26fd 100644 (file)
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -402,8 +402,8 @@ static inline void __ClearPageTail(struct page *page)
  */
 #define PAGE_FLAGS_CHECK_AT_PREP       ((1 << NR_PAGEFLAGS) - 1)
 
-#endif /* !__GENERATING_BOUNDS_H */
-
+#define PAGE_FLAGS_PRIVATE                             \
+       (1 << PG_private | 1 << PG_private_2)
 /**
  * page_has_private - Determine if page has private stuff
  * @page: The page to be checked
@@ -411,8 +411,11 @@ static inline void __ClearPageTail(struct page *page)
  * Determine if a page has private stuff, indicating that release routines
  * should be invoked upon it.
  */
-#define page_has_private(page)                 \
-       ((page)->flags & ((1 << PG_private) |   \
-                         (1 << PG_private_2)))
+static inline int page_has_private(struct page *page)
+{
+       return !!(page->flags & PAGE_FLAGS_PRIVATE);
+}
+
+#endif /* !__GENERATING_BOUNDS_H */
 
 #endif /* PAGE_FLAGS_H */