race condition on looking up inodes

[warren]

Hi,
    I had post a simillar message before.
    Thanks for the replay from Albert D. Cahalan. But i found some results
confusing me.
    For example,  process 1 and process 2 run concurrently and execute the
following system calls.

    rename("/usr/hybrid/cfg/data","/usr/mytemp/data1"); /*for process 1*/

   ----------------------------------------------------------------

  rename("/usr/mytemp/data1","/usr/test");/* for process 2*/

  ----------------------------------------------------------------
  It is possible that context switch happens when process 1 is look ing up
the inode for "/usr/mytemp/data1"  or the inode for "/usr/hybrid/cfg/data".

 It will result in diffrent behaviour for process 2 and confuses the
application.
  If so,how does Linux solve?

  Thanks.

    Warren