sfmmu_get_free_hblk
if (!sfmmu_get_free_hblk(&hmeblkp, 1))
if (!sfmmu_get_free_hblk(&hmeblkp, 0)) {
if (sfmmu_get_free_hblk(&hmeblkp, critical))
static uint_t sfmmu_get_free_hblk(struct hme_blk **, uint_t);