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-rw-r--r--block/blk-cgroup.h15
1 files changed, 11 insertions, 4 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index df1c7b290c22..66253a7c8ff4 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -64,6 +64,9 @@ struct blkg_policy_data {
/* the blkg this per-policy data belongs to */
struct blkio_group *blkg;
+ /* used during policy activation */
+ struct list_head alloc_node;
+
/* pol->pdata_size bytes of private data used by policy impl */
char pdata[] __aligned(__alignof__(unsigned long long));
};
@@ -108,9 +111,11 @@ extern void blkcg_exit_queue(struct request_queue *q);
/* Blkio controller policy registration */
extern int blkio_policy_register(struct blkio_policy_type *);
extern void blkio_policy_unregister(struct blkio_policy_type *);
+extern int blkcg_activate_policy(struct request_queue *q,
+ const struct blkio_policy_type *pol);
+extern void blkcg_deactivate_policy(struct request_queue *q,
+ const struct blkio_policy_type *pol);
extern void blkg_destroy_all(struct request_queue *q, bool destroy_root);
-extern void update_root_blkg_pd(struct request_queue *q,
- const struct blkio_policy_type *pol);
void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg,
u64 (*prfill)(struct seq_file *, void *, int),
@@ -325,10 +330,12 @@ static inline void blkcg_drain_queue(struct request_queue *q) { }
static inline void blkcg_exit_queue(struct request_queue *q) { }
static inline int blkio_policy_register(struct blkio_policy_type *blkiop) { return 0; }
static inline void blkio_policy_unregister(struct blkio_policy_type *blkiop) { }
+static inline int blkcg_activate_policy(struct request_queue *q,
+ const struct blkio_policy_type *pol) { return 0; }
+static inline void blkcg_deactivate_policy(struct request_queue *q,
+ const struct blkio_policy_type *pol) { }
static inline void blkg_destroy_all(struct request_queue *q,
bool destory_root) { }
-static inline void update_root_blkg_pd(struct request_queue *q,
- const struct blkio_policy_type *pol) { }
static inline void *blkg_to_pdata(struct blkio_group *blkg,
struct blkio_policy_type *pol) { return NULL; }