1 files changed, 41 insertions, 0 deletions

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 00e55e23b777..e5bddbfcf7ae 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -109,6 +109,47 @@ enum pageflags {
 #ifndef __GENERATING_BOUNDS_H
 
 /*
+ * Macros to create function definitions for page flags
+ */
+#define TESTPAGEFLAG(uname, lname)                                      \
+static inline int Page##uname(struct page *page)                        \
+                        { return test_bit(PG_##lname, &page->flags); }
+
+#define SETPAGEFLAG(uname, lname)                                       \
+static inline void SetPage##uname(struct page *page)                    \
+                        { set_bit(PG_##lname, &page->flags); }
+
+#define CLEARPAGEFLAG(uname, lname)                                     \
+static inline void ClearPage##uname(struct page *page)                  \
+                        { clear_bit(PG_##lname, &page->flags); }
+
+#define __SETPAGEFLAG(uname, lname)                                     \
+static inline void __SetPage##uname(struct page *page)                  \
+                        { __set_bit(PG_##lname, &page->flags); }
+
+#define __CLEARPAGEFLAG(uname, lname)                                   \
+static inline void __ClearPage##uname(struct page *page)                \
+                        { __clear_bit(PG_##lname, &page->flags); }
+
+#define TESTSETFLAG(uname, lname)                                       \
+static inline int TestSetPage##uname(struct page *page)                 \
+                { return test_and_set_bit(PG_##lname, &page->flags); }
+
+#define TESTCLEARFLAG(uname, lname)                                     \
+static inline int TestClearPage##uname(struct page *page)               \
+                { return test_and_clear_bit(PG_##lname, &page->flags); }
+
+
+#define PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname)               \
+        SETPAGEFLAG(uname, lname) CLEARPAGEFLAG(uname, lname)
+
+#define __PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname)             \
+        __SETPAGEFLAG(uname, lname)  __CLEARPAGEFLAG(uname, lname)
+
+#define TESTSCFLAG(uname, lname)                                        \
+        TESTSETFLAG(uname, lname) TESTCLEARFLAG(uname, lname)
+
+/*
  * Manipulation of page state flags
  */
 #define PageLocked(page)                \