spa_next
while ((spa = spa_next(spa)) != NULL)
for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
while ((spa = spa_next(spa))) {
while ((altspa = spa_next(altspa)) != NULL) {
while ((spa = spa_next(spa)) != NULL) {
while ((spa = spa_next(NULL)) != NULL) {
while ((spa = spa_next(spa)) != NULL) {
while ((spa = spa_next(spa)) != NULL) {
extern spa_t *spa_next(spa_t *prev);