op_is_write

函数名称：op_is_write

函数原型：static inline bool op_is_write(unsigned int op)

返回类型：bool

参数：

类型	参数	名称
unsigned int	op

399

返回:op按位与1

**调用者**
名称	描述
generic_start_io_acct
generic_end_io_acct
bio_check_ro
submit_bio	submit_bio - submit a bio to the block device layer for I/O@bio: The &struct bio which describes the I/O submit_bio() is very similar in purpose to generic_make_request(), and* uses that function to do most of the work. Both are fairly rough
blk_rq_map_sg	map a request to scatterlist, return number of sg entries setup. Caller* must make sure sg can hold rq->nr_phys_segments entries
bfq_limit_depth	Async I/O can easily starve sync I/O (both sync reads and sync* writes), by consuming all tags
wbt_data_dir
op_stat_group
blkcg_bio_issue_check
blk_mq_plug	lk_mq_plug() - Get caller context plug@q: request queue@bio : the bio being submitted by the caller context* Plugging, by design, may delay the insertion of BIOs into the elevator in* order to increase BIO merging opportunities
blkg_rwstat_add	lkg_rwstat_add - add a value to a blkg_rwstat@rwstat: target blkg_rwstat@op: REQ_OP and flags@val: value to add Add @val to @rwstat. The counters are chosen according to @rw. The* caller is responsible for synchronizing calls to this function.

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