13 	struct lockref old;							\
15 	old.lock_count = READ_ONCE(lockref->lock_count);			\
17 		struct lockref new = old;					\
19 		if (likely(try_cmpxchg64_relaxed(&lockref->lock_count,		\
42 void lockref_get(struct lockref *lockref)  in lockref_get()  argument
50 	spin_lock(&lockref->lock);  in lockref_get()
51 	lockref->count++;  in lockref_get()
52 	spin_unlock(&lockref->lock);  in lockref_get()
61 bool lockref_get_not_zero(struct lockref *lockref)  in lockref_get_not_zero()  argument
73 	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()
90 int lockref_put_return(struct lockref *lockref)  in lockref_put_return()  argument
108 bool lockref_put_or_lock(struct lockref *lockref)  in lockref_put_or_lock()  argument
118 	spin_lock(&lockref->lock);  in lockref_put_or_lock()
119 	if (lockref->count <= 1)  in lockref_put_or_lock()
121 	lockref->count--;  in lockref_put_or_lock()
122 	spin_unlock(&lockref->lock);  in lockref_put_or_lock()
131 void lockref_mark_dead(struct lockref *lockref)  in lockref_mark_dead()  argument
133 	assert_spin_locked(&lockref->lock);  in lockref_mark_dead()
134 	lockref->count = -128;  in lockref_mark_dead()
143 bool lockref_get_not_dead(struct lockref *lockref)  in lockref_get_not_dead()  argument
155 	spin_lock(&lockref->lock);  in lockref_get_not_dead()
156 	if (lockref->count >= 0) {  in lockref_get_not_dead()
157 		lockref->count++;  in lockref_get_not_dead()
160 	spin_unlock(&lockref->lock);  in lockref_get_not_dead()