sector_io_ops
struct sector_io_ops __io_ops = {
bfs_init2(struct bfs **bfsp, int bfs_sector, struct sector_io_ops *io,
struct sector_io_ops;
struct sector_io_ops *io;
int bfs_init2(struct bfs **, int, struct sector_io_ops *, bool);
struct sector_io_ops io;
return bfs_init2(bfsp, 0, (struct sector_io_ops *)bio, false);