dec_and_lock.c File Reference

#include <linux/export.h>
#include <linux/spinlock.h>
#include <linux/atomic.h>

Go to the source code of this file.

Functions
int	_atomic_dec_and_lock (atomic_t *atomic, spinlock_t *lock)
	EXPORT_SYMBOL (_atomic_dec_and_lock)

Function Documentation

int _atomic_dec_and_lock	(	atomic_t *	atomic,
		spinlock_t *	lock
	)

atomic_dec_and_lock - lock on reaching reference count zero : the atomic counter : the spinlock in question

Decrements by 1. If the result is 0, returns true and locks . Returns false for all other cases.

Definition at line 20 of file dec_and_lock.c.

EXPORT_SYMBOL

(

_atomic_dec_and_lock

)