函数逻辑报告

函数名称：Returns NULL if a new bfqq should be allocated, or the old bfqq if this* was the last process referring to that bfqq.

函数原型：static struct bfq_queue *bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq)

返回类型：struct bfq_queue

参数：