fuid_domain
zfs_fuid_domain_t *fuid_domain;
for (fuididx = 1, fuid_domain = list_head(&fuidp->z_domains);
fuid_domain; fuid_domain = list_next(&fuidp->z_domains,
fuid_domain), fuididx++) {
if (idx == fuid_domain->z_domidx) {
fuid_domain = kmem_alloc(sizeof (zfs_fuid_domain_t), KM_SLEEP);
fuid_domain->z_domain = domain;
fuid_domain->z_domidx = idx;
list_insert_tail(&fuidp->z_domains, fuid_domain);