19 	struct lockref old;							\
21 	old.lock_count = READ_ONCE(lockref->lock_count);			\
23 		struct lockref new = old, prev = old;				\
25 		old.lock_count = cmpxchg64_relaxed(&lockref->lock_count,	\
48 void lockref_get(struct lockref *lockref)  in lockref_get()  argument
56 	spin_lock(&lockref->lock);  in lockref_get()
57 	lockref->count++;  in lockref_get()
58 	spin_unlock(&lockref->lock);  in lockref_get()
67 int lockref_get_not_zero(struct lockref *lockref)  in lockref_get_not_zero()  argument
79 	spin_lock(&lockref->lock);  in lockref_get_not_zero()
81 	if (lockref->count > 0) {  in lockref_get_not_zero()
82 		lockref->count++;  in lockref_get_not_zero()
85 	spin_unlock(&lockref->lock);  in lockref_get_not_zero()
96 int lockref_get_or_lock(struct lockref *lockref)  in lockref_get_or_lock()  argument
106 	spin_lock(&lockref->lock);  in lockref_get_or_lock()
107 	if (lockref->count <= 0)  in lockref_get_or_lock()
109 	lockref->count++;  in lockref_get_or_lock()
110 	spin_unlock(&lockref->lock);  in lockref_get_or_lock()
122 int lockref_put_return(struct lockref *lockref)  in lockref_put_return()  argument
140 int lockref_put_or_lock(struct lockref *lockref)  in lockref_put_or_lock()  argument
150 	spin_lock(&lockref->lock);  in lockref_put_or_lock()
151 	if (lockref->count <= 1)  in lockref_put_or_lock()
153 	lockref->count--;  in lockref_put_or_lock()
154 	spin_unlock(&lockref->lock);  in lockref_put_or_lock()
163 void lockref_mark_dead(struct lockref *lockref)  in lockref_mark_dead()  argument
165 	assert_spin_locked(&lockref->lock);  in lockref_mark_dead()
166 	lockref->count = -128;  in lockref_mark_dead()
175 int lockref_get_not_dead(struct lockref *lockref)  in lockref_get_not_dead()  argument
187 	spin_lock(&lockref->lock);  in lockref_get_not_dead()
189 	if (lockref->count >= 0) {  in lockref_get_not_dead()
190 		lockref->count++;  in lockref_get_not_dead()
193 	spin_unlock(&lockref->lock);  in lockref_get_not_dead()