blk_queue_root_blkg 395 include/linux/blk-cgroup.h static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q) blk_queue_root_blkg 845 include/linux/blk-cgroup.h static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)