Initial state

inode bitmap  10000000
inodes        [d a:0 r:2] [] [] [] [] [] [] [] 
data bitmap   10000000
data          [(.,0) (..,0)] [] [] [] [] [] [] [] 

1. creat("/f");

state:
inode bitmap:
      inodes:
 data bitmap:
        data:

2. creat("/o");

state:
inode bitmap:
      inodes:
 data bitmap:
        data:

3. link("/f", "/v");

state:
inode bitmap:
      inodes:
 data bitmap:
        data:

4. mkdir("/p");

state:
inode bitmap:
      inodes:
 data bitmap:
        data:

5. fd=open("/o", O_WRONLY|O_APPEND); write(fd, "l", BLOCKSIZE); close(fd);

state:
inode bitmap:
      inodes:
 data bitmap:
        data:

6. link("/o", "/p/s");

state:
inode bitmap:
      inodes:
 data bitmap:
        data: