mempolicy: rename struct mempolicy 'policy' member to 'mode'

The terms 'policy' and 'mode' are both used in various places to describe the
semantics of the value stored in the 'policy' member of struct mempolicy.
Furthermore, the term 'policy' is used to refer to that member, to the entire
struct mempolicy and to the more abstract concept of the tuple consisting of a
"mode" and an optional node or set of nodes.  Recently, we have added "mode
flags" that are passed in the upper bits of the 'mode' [or sometimes,
'policy'] member of the numa APIs.

I'd like to resolve this confusion, which perhaps only exists in my mind, by
renaming the 'policy' member to 'mode' throughout, and fixing up the
Documentation.  Man pages will be updated separately.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 5e19c2275a6f..9080fab1426d 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -80,7 +80,7 @@ struct mm_struct;
  */
 struct mempolicy {
         atomic_t refcnt;
-        unsigned short policy;  /* See MPOL_* above */
+        unsigned short mode;    /* See MPOL_* above */
         unsigned short flags;   /* See set_mempolicy() MPOL_F_* above */
         union {
                 short            preferred_node; /* preferred */
@@ -149,7 +149,7 @@ struct shared_policy {
         spinlock_t lock;
 };
 
-void mpol_shared_policy_init(struct shared_policy *info, unsigned short policy,
+void mpol_shared_policy_init(struct shared_policy *info, unsigned short mode,
                                 unsigned short flags, nodemask_t *nodes);
 int mpol_set_shared_policy(struct shared_policy *info,
                                 struct vm_area_struct *vma,
@@ -213,7 +213,7 @@ static inline int mpol_set_shared_policy(struct shared_policy *info,
 }
 
 static inline void mpol_shared_policy_init(struct shared_policy *info,
-                unsigned short policy, unsigned short flags, nodemask_t *nodes)
+                unsigned short mode, unsigned short flags, nodemask_t *nodes)
 {
 }