bfq_pos_tree_add

函数名称：The following function is not marked as __cold because it is* actually cold, but for the same performance goal described in the* comments on the likely() at the beginning of* bfq_setup_cooperator()

函数原型：void __cold bfq_pos_tree_add_move(struct bfq_data *bfqd, struct bfq_queue *bfqq)

返回类型：void

参数：

类型	参数	名称
struct bfq_data *	bfqd
struct bfq_queue *	bfqq

612

如果quest-position tree root (see bfq_group's @rq_pos_tree) 则

613

rb_erase( & quest-position tree member (see bfq_group's @rq_pos_tree) , quest-position tree root (see bfq_group's @rq_pos_tree) )

614

quest-position tree root (see bfq_group's @rq_pos_tree) = NULL

618

如果bfqq恒等于 fallback dummy bfqq for extreme OOM conditions 则返回

626

如果bfq_too_late_for_merging(bfqq)则返回

629

如果bfq_class_idle(bfqq)则返回

631

如果非 fifo isn't expired, next request to serve 则返回

634

quest-position tree root (see bfq_group's @rq_pos_tree) 等于rq_pos_tree

635

__bfqq等于bfq_rq_pos_tree_lookup(bfqd, quest-position tree root (see bfq_group's @rq_pos_tree) , lk_rq_pos() : the current sector* blk_rq_bytes() : bytes left in the entire request* blk_rq_cur_bytes() : bytes left in the current segment* blk_rq_err_bytes() : bytes left till the next error boundary* blk_rq_sectors() : sectors left in the entire , & parent, & p)

637

如果非__bfqq则

638

rb_link_node( & quest-position tree member (see bfq_group's @rq_pos_tree) , parent, p)

639

rb_insert_color( & quest-position tree member (see bfq_group's @rq_pos_tree) , quest-position tree root (see bfq_group's @rq_pos_tree) )

640

否则quest-position tree root (see bfq_group's @rq_pos_tree) = NULL

**调用者**
名称	描述
bfq_add_request
bfq_remove_request
bfq_request_merged
__bfq_bfqq_expire

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告