refcount_dec_and_mutex

函数名称：_dec_and_mutex_lock - return holding mutex if able to decrement* refcount to 0*@r: the refcount*@lock: the mutex to be locked* Similar to atomic_dec_and_mutex_lock(), it will WARN on underflow and fail* to decrement when saturated at REFCOUNT_SATURATED

函数原型：bool refcount_dec_and_mutex_lock(refcount_t *r, struct mutex *lock)

返回类型：bool

参数：

类型	参数	名称
refcount_t *	r
struct mutex *	lock

115

如果_dec_not_one - decrement a refcount if it is not 1*@r: the refcount* No atomic_t counterpart, it decrements unless the value is 1, in which case* it will return false则返回:false

118

mutex_lock(lock)

119

如果非_dec_and_test - decrement a refcount and test if it is 0*@r: the refcount* Similar to atomic_dec_and_test(), it will WARN on underflow and fail to* decrement when saturated at REFCOUNT_SATURATED则

120

mutex_unlock(lock)

121

返回:false

124

返回:true

**调用者**
名称	描述
kref_put_mutex

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