1 files changed, 10 insertions, 9 deletions

diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index b8b3da7a3315..389a06e8ee21 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -9,12 +9,13 @@
  */
 
 /* Policies */
-#define MPOL_DEFAULT    0
-#define MPOL_PREFERRED  1
-#define MPOL_BIND       2
-#define MPOL_INTERLEAVE 3
-
-#define MPOL_MAX MPOL_INTERLEAVE
+enum {
+        MPOL_DEFAULT,
+        MPOL_PREFERRED,
+        MPOL_BIND,
+        MPOL_INTERLEAVE,
+        MPOL_MAX,       /* always last member of enum */
+};
 
 /* Flags for get_mem_policy */
 #define MPOL_F_NODE     (1<<0)  /* return next IL mode instead of node mask */
@@ -64,7 +65,7 @@ struct mm_struct;
  */
 struct mempolicy {
         atomic_t refcnt;
-        short policy;   /* See MPOL_* above */
+        unsigned short policy;  /* See MPOL_* above */
         union {
                 short            preferred_node; /* preferred */
                 nodemask_t       nodes;         /* interleave/bind */
@@ -134,7 +135,7 @@ struct shared_policy {
         spinlock_t lock;
 };
 
-void mpol_shared_policy_init(struct shared_policy *info, int policy,
+void mpol_shared_policy_init(struct shared_policy *info, unsigned short policy,
                                 nodemask_t *nodes);
 int mpol_set_shared_policy(struct shared_policy *info,
                                 struct vm_area_struct *vma,
@@ -202,7 +203,7 @@ static inline int mpol_set_shared_policy(struct shared_policy *info,
 }
 
 static inline void mpol_shared_policy_init(struct shared_policy *info,
-                                        int policy, nodemask_t *nodes)
+                                unsigned short policy, nodemask_t *nodes)
 {
 }