u32 totsize = sizeof(bh_tree) + sizeof(bh_node)*(item_count*2-1);
bh_tree *bh = vg_linear_alloc( lin_alloc, totsize );
bh->system = system;
bh->user = user;
u32 totsize = sizeof(bh_tree) + sizeof(bh_node)*(item_count*2-1);
bh_tree *bh = vg_linear_alloc( lin_alloc, totsize );
bh->system = system;
bh->user = user;