block: remove elevator_queue->ops

elevator_queue->ops points to the same ops struct ->elevator_type.ops
is pointing to.  The only effect of caching it in elevator_queue is
shorter notation - it doesn't save any indirect derefence.

Relocate elevator_type->list which used only during module init/exit
to the end of the structure, rename elevator_queue->elevator_type to
->type, and replace elevator_queue->ops with elevator_queue->type.ops.

This doesn't introduce any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 2 insertions, 3 deletions

diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 02604c89ddde..04958ef53e62 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -78,11 +78,11 @@ struct elv_fs_entry {
  */
 struct elevator_type
 {
-        struct list_head list;
         struct elevator_ops ops;
         struct elv_fs_entry *elevator_attrs;
         char elevator_name[ELV_NAME_MAX];
         struct module *elevator_owner;
+        struct list_head list;
 };
 
 /*
@@ -90,10 +90,9 @@ struct elevator_type
  */
 struct elevator_queue
 {
-        struct elevator_ops *ops;
+        struct elevator_type *type;
         void *elevator_data;
         struct kobject kobj;
-        struct elevator_type *elevator_type;
         struct mutex sysfs_lock;
         struct hlist_head *hash;
         unsigned int registered:1;