refcount_t
refcount_t refcount;
refcount_set(refcount_t *ref, unsigned int i)
refcount_inc(refcount_t *ref)
refcount_inc_not_zero(refcount_t *ref)
refcount_dec(refcount_t *ref)
refcount_read(refcount_t *ref)
refcount_dec_and_lock_irqsave(refcount_t *ref, spinlock_t *lock,
refcount_dec_and_test(refcount_t *r)
refcount_t refcnt;
refcount_t refcount;