diff options
Diffstat (limited to 'block/blk-cgroup.h')
| -rw-r--r-- | block/blk-cgroup.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index e5cfcbd4d2f4..41c960b99c57 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -153,8 +153,8 @@ struct blkio_group_stats_cpu { }; struct blkio_group { - /* An rcu protected unique identifier for the group */ - void *key; + /* Pointer to the associated request_queue, RCU protected */ + struct request_queue __rcu *q; struct hlist_node blkcg_node; unsigned short blkcg_id; /* Store cgroup path */ @@ -202,17 +202,18 @@ extern unsigned int blkcg_get_read_iops(struct blkio_cgroup *blkcg, extern unsigned int blkcg_get_write_iops(struct blkio_cgroup *blkcg, dev_t dev); -typedef void (blkio_unlink_group_fn) (void *key, struct blkio_group *blkg); +typedef void (blkio_unlink_group_fn)(struct request_queue *q, + struct blkio_group *blkg); typedef bool (blkio_clear_queue_fn)(struct request_queue *q); -typedef void (blkio_update_group_weight_fn) (void *key, +typedef void (blkio_update_group_weight_fn)(struct request_queue *q, struct blkio_group *blkg, unsigned int weight); -typedef void (blkio_update_group_read_bps_fn) (void * key, +typedef void (blkio_update_group_read_bps_fn)(struct request_queue *q, struct blkio_group *blkg, u64 read_bps); -typedef void (blkio_update_group_write_bps_fn) (void *key, +typedef void (blkio_update_group_write_bps_fn)(struct request_queue *q, struct blkio_group *blkg, u64 write_bps); -typedef void (blkio_update_group_read_iops_fn) (void *key, +typedef void (blkio_update_group_read_iops_fn)(struct request_queue *q, struct blkio_group *blkg, unsigned int read_iops); -typedef void (blkio_update_group_write_iops_fn) (void *key, +typedef void (blkio_update_group_write_iops_fn)(struct request_queue *q, struct blkio_group *blkg, unsigned int write_iops); struct blkio_policy_ops { @@ -305,12 +306,13 @@ extern struct blkio_cgroup blkio_root_cgroup; extern struct blkio_cgroup *cgroup_to_blkio_cgroup(struct cgroup *cgroup); extern struct blkio_cgroup *task_blkio_cgroup(struct task_struct *tsk); extern void blkiocg_add_blkio_group(struct blkio_cgroup *blkcg, - struct blkio_group *blkg, void *key, dev_t dev, + struct blkio_group *blkg, struct request_queue *q, dev_t dev, enum blkio_policy_id plid); extern int blkio_alloc_blkg_stats(struct blkio_group *blkg); extern int blkiocg_del_blkio_group(struct blkio_group *blkg); extern struct blkio_group *blkiocg_lookup_group(struct blkio_cgroup *blkcg, - void *key); + struct request_queue *q, + enum blkio_policy_id plid); void blkiocg_update_timeslice_used(struct blkio_group *blkg, unsigned long time, unsigned long unaccounted_time); |