1 files changed, 7 insertions, 8 deletions

diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 83ce5fa0a604..6e8ee86a2870 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -178,13 +178,11 @@ struct blkg_policy_data {
 struct blkio_group {
         /* Pointer to the associated request_queue, RCU protected */
         struct request_queue __rcu *q;
-        struct list_head q_node[BLKIO_NR_POLICIES];
+        struct list_head q_node;
         struct hlist_node blkcg_node;
         struct blkio_cgroup *blkcg;
         /* Store cgroup path */
         char path[128];
-        /* policy which owns this blk group */
-        enum blkio_policy_id plid;
         /* reference count */
         int refcnt;
 
@@ -230,8 +228,9 @@ extern void blkcg_exit_queue(struct request_queue *q);
 /* Blkio controller policy registration */
 extern void blkio_policy_register(struct blkio_policy_type *);
 extern void blkio_policy_unregister(struct blkio_policy_type *);
-extern void blkg_destroy_all(struct request_queue *q,
-                             enum blkio_policy_id plid, bool destroy_root);
+extern void blkg_destroy_all(struct request_queue *q, bool destroy_root);
+extern void update_root_blkg_pd(struct request_queue *q,
+                                enum blkio_policy_id plid);
 
 /**
  * blkg_to_pdata - get policy private data
@@ -313,8 +312,9 @@ static inline void blkcg_exit_queue(struct request_queue *q) { }
 static inline void blkio_policy_register(struct blkio_policy_type *blkiop) { }
 static inline void blkio_policy_unregister(struct blkio_policy_type *blkiop) { }
 static inline void blkg_destroy_all(struct request_queue *q,
-                                    enum blkio_policy_id plid,
                                     bool destory_root) { }
+static inline void update_root_blkg_pd(struct request_queue *q,
+                                       enum blkio_policy_id plid) { }
 
 static inline void *blkg_to_pdata(struct blkio_group *blkg,
                                 struct blkio_policy_type *pol) { return NULL; }
@@ -382,8 +382,7 @@ extern struct blkio_cgroup *cgroup_to_blkio_cgroup(struct cgroup *cgroup);
 extern struct blkio_cgroup *task_blkio_cgroup(struct task_struct *tsk);
 extern int blkiocg_del_blkio_group(struct blkio_group *blkg);
 extern struct blkio_group *blkg_lookup(struct blkio_cgroup *blkcg,
-                                       struct request_queue *q,
-                                       enum blkio_policy_id plid);
+                                       struct request_queue *q);
 struct blkio_group *blkg_lookup_create(struct blkio_cgroup *blkcg,
                                        struct request_queue *q,
                                        enum blkio_policy_id plid,