VV_VMSIZEVNLOCK
vp->v_vflag |= VV_VMSIZEVNLOCK;
vp->v_vflag |= VV_VMSIZEVNLOCK;
if (vp->v_vflag & VV_VMSIZEVNLOCK)
VV_CACHEDLABEL | VV_VMSIZEVNLOCK | VV_COPYONWRITE | VV_SYSTEM |
if ((vp->v_vflag & VV_VMSIZEVNLOCK) != 0) {