radix_tree_get_tag
assert(!radix_tree_get_tag(t, 1000, 1));
assert(!radix_tree_get_tag(t, 1000, 2));
assert(radix_tree_get_tag(t, 1000, 2 | 1) == 0);
assert(!radix_tree_get_tag(t, 1000, 1));
assert(radix_tree_get_tag(t, 1000, 2));
assert(radix_tree_get_tag(t, 1000, 2 | 1) == 2);
assert(!radix_tree_get_tag(t, 0, 2));
assert(radix_tree_get_tag(t, 1000, 2));
assert(!radix_tree_get_tag(t, UINT64_C(10000000000), 1));
assert(radix_tree_get_tag(t, 0, 2));
assert(radix_tree_get_tag(t, 1000, 2));
assert(radix_tree_get_tag(t, UINT64_C(10000000000), 2));
assert(!radix_tree_get_tag(t, 0, 2));
assert(radix_tree_get_tag(t, 1000, 2));
assert(!radix_tree_get_tag(t, UINT64_C(10000000000), 2));
assert(!radix_tree_get_tag(t, 1000, 1));
assert(radix_tree_get_tag(t, 1000, 2));
assert(radix_tree_get_tag(t, 1000, 2 | 1) == 2);
radix_tree_get_tag(t, n->idx, tagmask));
tagged = radix_tree_get_tag(t, n->idx, tagmask);
radix_tree_tagmask_t radix_tree_get_tag(struct radix_tree *, uint64_t,
return radix_tree_get_tag(&uobj->uo_pages, pgidx, tag) != 0;