Hi Jan,

OK.I did as what you say.First open file "hakan" ,than open same file on 
second client.But there is no kernel error or in-use error??is this a 
bug?or Am I do something wrong??


Jan Harkes wrote:

> There is not really a lock file or lock on the device. However our
>
>kernel module only allows a single process to open it. If the device is
>considered 'in-use' the kernel returns an EBUSY error.
>
>It is quite useful, this way the kernel knows that any message to or
>from userspace always ends up with the same process.
>
>Jan
>
>
>  
>


-- 

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