blk_queue_flag_test_and

函数名称：lk_queue_flag_test_and_set - atomically test and set a queue flag*@flag: flag to be set*@q: request queue* Returns the previous value of @flag - 0 if the flag was not set and 1 if* the flag was already set.

函数原型：bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q)

返回类型：bool

参数：

类型	参数	名称
unsigned int	flag
struct request_queue *	q

105

返回:st_and_set_bit - Set a bit and return its old value*@nr: Bit to set*@addr: Address to count from* This is an atomic fully-ordered operation (implied full memory barrier).

**调用者**
名称	描述
blk_poll_stats_enable	Enable polling stats and return whether they were already enabled.

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