cvslocks dir in $CVSROOT

[Jayashree]

Hi,

I've created a CVS repository.
I would like to know if it is really necessary to  
"mkdir cvslocks" dir for every repository that I create.
Also,What would happen if I don't specify LockDir in 
$CVSROOT/config file?
But I have cvs logins specified in $CVSROOT/readers 
and $CVSROOT/writers file. Is that not enough to handle read/write 
permissions for cvs logins.

Can somebody explain me about this?

Thanx!
Jayashree

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