How to write file systems

["Ravikumar Vallabhu" <ravikumar.lkp@xxxxxxxxx>]

  Hi,
  i've good  knowledge in linux ineternals and elementary knowledge kernel programming.
   I've started kernel programming  from the stage of compiling the source code.I've successfully upgraded my linux kernel form 
2.6.15 to 
   2.6.18. Writing modules ,building and loading ,all those stuff.

    Can some body help in developing our own file systems and where to start .or suggest some good resources.

    Thanks in advance

    Ravikumar