dmu_write_uio_dnode
err = dmu_write_uio_dnode(dn, uio, size, tx);
err = dmu_write_uio_dnode(dn, uio, size, tx);
int dmu_write_uio_dnode(dnode_t *dn, struct uio *uio, uint64_t size,
error = dmu_write_uio_dnode(zv->zv_dn, uio, bytes, tx);
error = dmu_write_uio_dnode(sl->sl_zvol_dn_hdl, uio, len, tx);