flock_check
if ((error = flock_check(vp, &bf, offset, maxoffset)) != 0)
static int flock_check(vnode_t *, flock64_t *, offset_t, offset_t);
error = flock_check(vp, &bf, offset, maxoffset);
error = flock_check(vp, &bf, offset, MAXOFFSET_T);
if ((error = flock_check(vp, &bf, offset, MAXOFFSET_T)) != 0)