struct lafs_ino *lafs_get_itable(struct lafs *);
struct lafs_ino *lafs_add_inode(struct lafs_ino*, int inum, int type);
+struct lafs_ino *lafs_get_inode(struct lafs_ino *fsys, int inum);
int lafs_imap_set(struct lafs_ino *, int inum);
int lafs_add_free_seg(struct lafs*, int dev, loff_t seg);