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read/write from kernel module

Hi,
  I have this kernel module, when I unload it, I want to save some meta
data to some place and read the meta in again when the next time I load
the module again. Since meta are huge, I can not pass them as parameters.
Coud I do kernel read/write file system? or any other ideas about how to
do it?

Any comments is highly appreciated.

Best,
-Haijin


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