vn_rangelock_tryrlock
rl_rcookie = vn_rangelock_tryrlock(vp, inoff,
rl_rcookie = vn_rangelock_tryrlock(vp, inoff,
rl_rcookie = vn_rangelock_tryrlock(vp,
rl_rcookie = vn_rangelock_tryrlock(vp,
rl_rcookie = vn_rangelock_tryrlock(invp, inoff, inoff + len);