#define PG_nosave_free 18 /* Free, should not be written */
#define PG_buddy 19 /* Page is free, on buddy lists */
+#define PG_constant 20 /* To mark if the page is constant */
+ #define PG_xpmem 27 /* Testing for xpmem. */
/* PG_owner_priv_1 users should have descriptive aliases */
- #define PG_checked PG_owner_priv_1 /* Used by some filesystems */
@@ -252,6 +253,14 @@
struct page; /* forward declaration */