refcount_dec_and

Name:_dec_and_lock - return holding spinlock if able to decrement* refcount to 0*@r: the refcount*@lock: the spinlock to be locked* Similar to atomic_dec_and_lock(), it will WARN on underflow and fail to* decrement when saturated at REFCOUNT_SATURATED

Proto:bool refcount_dec_and_lock(refcount_t *r, spinlock_t *lock)

Type:bool

Parameter:

Type	Parameter	Name
refcount_t *	r
spinlock_t *	lock

146

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

149

spin_lock(lock)

150

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

151

spin_unlock(lock)

152

Return false

155

Return true

**Caller**
Name	Describe
fscrypt_put_direct_key
kref_put_lock

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report