radix_tree_empty_tagged_tree_p
assert(radix_tree_empty_tagged_tree_p(t, 1));
assert(radix_tree_empty_tagged_tree_p(t, 2));
assert(radix_tree_empty_tagged_tree_p(t, 1));
assert(radix_tree_empty_tagged_tree_p(t, 2));
assert(radix_tree_empty_tagged_tree_p(t, 1));
assert(radix_tree_empty_tagged_tree_p(t, 2));
assert(radix_tree_empty_tagged_tree_p(t, 1));
assert(!radix_tree_empty_tagged_tree_p(t, 2));
assert(radix_tree_empty_tagged_tree_p(t, tagmask));
bool radix_tree_empty_tagged_tree_p(struct radix_tree *, radix_tree_tagmask_t);
return radix_tree_empty_tagged_tree_p(&uobj->uo_pages, tag);