From 4f85cb96d9d2fbbb7160db855a6beee1baced5e5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Mar 2012 13:15:28 -0800 Subject: block: make block cgroup policies follow bio task association Implement bio_blkio_cgroup() which returns the blkcg associated with the bio if exists or %current's blkcg, and use it in blk-throttle and cfq-iosched propio. This makes both cgroup policies honor task association for the bio instead of always assuming %current. As nobody is using bio_set_task() yet, this doesn't introduce any behavior change. Signed-off-by: Tejun Heo Cc: Vivek Goyal Signed-off-by: Jens Axboe --- block/blk-cgroup.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'block/blk-cgroup.h') diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index 66eaefefcbd2..98cd8533378f 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -379,7 +379,7 @@ static inline void blkiocg_set_start_empty_time(struct blkio_group *blkg, #ifdef CONFIG_BLK_CGROUP 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 struct blkio_cgroup *bio_blkio_cgroup(struct bio *bio); extern struct blkio_group *blkg_lookup(struct blkio_cgroup *blkcg, struct request_queue *q); struct blkio_group *blkg_lookup_create(struct blkio_cgroup *blkcg, @@ -413,7 +413,7 @@ struct cgroup; static inline struct blkio_cgroup * cgroup_to_blkio_cgroup(struct cgroup *cgroup) { return NULL; } static inline struct blkio_cgroup * -task_blkio_cgroup(struct task_struct *tsk) { return NULL; } +bio_blkio_cgroup(struct bio *bio) { return NULL; } static inline struct blkio_group *blkg_lookup(struct blkio_cgroup *blkcg, void *key) { return NULL; } -- cgit v1.2.3