blk_rq_count_integrity

函数名称：lk_rq_count_integrity_sg - Count number of integrity scatterlist elements*@q: request queue*@bio: bio with integrity metadata attached* Description: Returns the number of elements required in a* scatterlist corresponding to the integrity metadata in a bio.

函数原型：int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *bio)

返回类型：int

参数：

类型	参数	名称
struct request_queue *	q
struct bio *	bio

struct bio_vec iv, ivprv = {NULL}

segments等于0

seg_size等于0

prev等于0

bio_for_each_integrity_vec(iv, bio, iter)

如果prev则

如果非biovec_phys_mergeable(q, & ivprv, & iv)则转到:new_segment

如果seg_size加bv_len大于queue_max_segment_size(q)则转到:new_segment

seg_size加等于bv_len

否则

new_segment :

segments自加

seg_size等于bv_len

prev等于1

ivprv等于iv

返回:segments

**调用者**
名称	描述
blk_integrity_merge_bio

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