extras
static const char *extras[] = {
for (i = 0; extras[i]; i++) {
if (mdb_lookup_by_obj(ZFS_OBJ_NAME, extras[i], &sym) == -1) {
mdb_warn("failed to find '%s'", extras[i]);
extras[i]);
mdb_warn("couldn't read '%s'", extras[i]);
mdb_printf("%-25s = ", extras[i]);
extern int extras __P((char ***, struct frentry *, int));
int extras = 0;
extras = 1;
head->tx_frags_to_ack = nslots - extras;