prototype ext3 tapset

[Xue Peng Li]

Hi TOM,

   I am working on nfs tapset recently. I reuses vfs.stp from you to 
avoid some duplicated work. During the working on ext3.stp and vfs.stp, 
I makes some changes to ext3.stp and vfs.stp. I adds some new variables 
in those two files.

One question is about  "datasync" in probe ext3.fop.fsync,i am not sure 
this variable contains some important information,but it's never used in 
the ext3_sync_file ,so i delete it in probe ext3.fop.fsync.

How about your idea?

Attached is the detail of the changes

- Xuepeng

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