refcount_dec_and_mutex

Name:_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

Proto:bool refcount_dec_and_mutex_lock(refcount_t *r, struct mutex *lock)

Type:bool

Parameter:

Type	Parameter	Name
refcount_t *	r
struct mutex *	lock

115

If _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 Then Return false

118

mutex_lock(lock)

119

If Not _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 Then

120

mutex_unlock(lock)

121

Return false

124

Return true

**Caller**
Name	Describe
kref_put_mutex

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Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

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