EXPORT_SYMBOL(lockref_put_not_zero);
/**
- * lockref_get_or_lock - Increments count unless the count is 0 or dead
- * @lockref: pointer to lockref structure
- * Return: 1 if count updated successfully or 0 if count was zero
- * and we got the lock instead.
- */
-int lockref_get_or_lock(struct lockref *lockref)
-{
- CMPXCHG_LOOP(
- new.count++;
- if (old.count <= 0)
- break;
- ,
- return 1;
- );
-
- spin_lock(&lockref->lock);
- if (lockref->count <= 0)
- return 0;
- lockref->count++;
- spin_unlock(&lockref->lock);
- return 1;
-}
-EXPORT_SYMBOL(lockref_get_or_lock);
-
-/**
* lockref_put_return - Decrement reference count if possible
* @lockref: pointer to lockref structure
*