sysvbfs_file_setsize
sysvbfs_file_setsize(vp, vap->va_size);
sysvbfs_file_setsize(v, uio->uio_offset + uio->uio_resid);
sysvbfs_file_setsize(v, bnode->size - uio->uio_resid);
static void sysvbfs_file_setsize(struct vnode *, size_t);