prepare_to_wait_exclusive

函数名称：prepare_to_wait_exclusive

函数原型：void prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state)

返回类型：void

参数：

类型	参数	名称
struct wait_queue_head *	wq_head
struct wait_queue_entry *	wq_entry
int	state

257

flags或等于wait_queue_entry::flags

258

spin_lock_irqsave( & lock, flags)

259

如果链表为空则__add_wait_queue_entry_tail(wq_head, wq_entry)

261

set_current_state(state)

262

spin_unlock_irqrestore( & lock, flags)

**调用者**
名称	描述
__wait_on_bit_lock
get_unlocked_entry	Look up entry in page cache, wait for it to become unlocked if it* is a DAX entry and return it. The caller must subsequently call* put_unlocked_entry() if it did not lock the entry or dax_unlock_entry()* if it did
sbitmap_prepare_to_wait
__cancel_work_timer
rq_qos_wait	q_qos_wait - throttle on a rqw if we need to@rqw: rqw to throttle on@private_data: caller provided specific data@acquire_inflight_cb: inc the rqw->inflight counter if we can@cleanup_cb: the callback to cleanup in case we race with a waker
io_cqring_wait	Wait until events become available, if we don't already have some. The* application must reap them itself, as they reside on the shared cq ring.

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