blk_throtl_bio   2117 block/blk-throttle.c bool blk_throtl_bio(struct request_queue *q, struct blkcg_gq *blkg,
blk_throtl_bio    707 include/linux/blk-cgroup.h static inline bool blk_throtl_bio(struct request_queue *q, struct blkcg_gq *blkg,