diff options
Diffstat (limited to 'block/blk-cgroup.h')
| -rw-r--r-- | block/blk-cgroup.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index 4d316df863b4..8ccc20464dae 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -15,7 +15,13 @@ #include <linux/cgroup.h> -#ifdef CONFIG_BLK_CGROUP +#if defined(CONFIG_BLK_CGROUP) || defined(CONFIG_BLK_CGROUP_MODULE) + +#ifndef CONFIG_BLK_CGROUP +/* When blk-cgroup is a module, its subsys_id isn't a compile-time constant */ +extern struct cgroup_subsys blkio_subsys; +#define blkio_subsys_id blkio_subsys.subsys_id +#endif struct blkio_cgroup { struct cgroup_subsys_state css; @@ -43,9 +49,6 @@ struct blkio_group { unsigned long sectors; }; -extern bool blkiocg_css_tryget(struct blkio_cgroup *blkcg); -extern void blkiocg_css_put(struct blkio_cgroup *blkcg); - typedef void (blkio_unlink_group_fn) (void *key, struct blkio_group *blkg); typedef void (blkio_update_group_weight_fn) (struct blkio_group *blkg, unsigned int weight); @@ -94,7 +97,7 @@ static inline void blkiocg_update_blkio_group_dequeue_stats( struct blkio_group *blkg, unsigned long dequeue) {} #endif -#ifdef CONFIG_BLK_CGROUP +#if defined(CONFIG_BLK_CGROUP) || defined(CONFIG_BLK_CGROUP_MODULE) extern struct blkio_cgroup blkio_root_cgroup; extern struct blkio_cgroup *cgroup_to_blkio_cgroup(struct cgroup *cgroup); extern void blkiocg_add_blkio_group(struct blkio_cgroup *blkcg, |