rw_wowner
rw_wowner(rw) != curthread)))
#define rw_wlocked(rw) (rw_wowner((rw)) == curthread)
if (rw_wowner(rw) != curthread)
if (rw_wowner(rw) == curthread)
td = rw_wowner(rw);
#define rw_owner(rw) rw_wowner(rw)
*owner = rw_wowner(rw);
return (rw_wowner(rwlock2rw(c)) == curthread);
KASSERT(rw_wowner(rw) != td,