12 	struct lockref old;							\
14 	old.lock_count = READ_ONCE(lockref->lock_count);			\
16 		struct lockref new = old, prev = old;				\
18 		old.lock_count = cmpxchg64_relaxed(&lockref->lock_count,	\
41 void lockref_get(struct lockref *lockref)  in lockref_get()  argument
49 	spin_lock(&lockref->lock);  in lockref_get()
50 	lockref->count++;  in lockref_get()
51 	spin_unlock(&lockref->lock);  in lockref_get()
60 int lockref_get_not_zero(struct lockref *lockref)  in lockref_get_not_zero()  argument
72 	spin_lock(&lockref->lock);  in lockref_get_not_zero()
74 	if (lockref->count > 0) {  in lockref_get_not_zero()
75 		lockref->count++;  in lockref_get_not_zero()
78 	spin_unlock(&lockref->lock);  in lockref_get_not_zero()
88 int lockref_put_not_zero(struct lockref *lockref)  in lockref_put_not_zero()  argument
100 	spin_lock(&lockref->lock);  in lockref_put_not_zero()
102 	if (lockref->count > 1) {  in lockref_put_not_zero()
103 		lockref->count--;  in lockref_put_not_zero()
106 	spin_unlock(&lockref->lock);  in lockref_put_not_zero()
117 int lockref_get_or_lock(struct lockref *lockref)  in lockref_get_or_lock()  argument
127 	spin_lock(&lockref->lock);  in lockref_get_or_lock()
128 	if (lockref->count <= 0)  in lockref_get_or_lock()
130 	lockref->count++;  in lockref_get_or_lock()
131 	spin_unlock(&lockref->lock);  in lockref_get_or_lock()
143 int lockref_put_return(struct lockref *lockref)  in lockref_put_return()  argument
161 int lockref_put_or_lock(struct lockref *lockref)  in lockref_put_or_lock()  argument
171 	spin_lock(&lockref->lock);  in lockref_put_or_lock()
172 	if (lockref->count <= 1)  in lockref_put_or_lock()
174 	lockref->count--;  in lockref_put_or_lock()
175 	spin_unlock(&lockref->lock);  in lockref_put_or_lock()
184 void lockref_mark_dead(struct lockref *lockref)  in lockref_mark_dead()  argument
186 	assert_spin_locked(&lockref->lock);  in lockref_mark_dead()
187 	lockref->count = -128;  in lockref_mark_dead()
196 int lockref_get_not_dead(struct lockref *lockref)  in lockref_get_not_dead()  argument
208 	spin_lock(&lockref->lock);  in lockref_get_not_dead()
210 	if (lockref->count >= 0) {  in lockref_get_not_dead()
211 		lockref->count++;  in lockref_get_not_dead()
214 	spin_unlock(&lockref->lock);  in lockref_get_not_dead()