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kernel VM area issue


Hi all -

My name is Fabrice. I'm currently working on Linux 2.4.2 kernel which is
part of Red-Hat 7.1 package. I'm hacking on the VM system of Linux.
My question is:
Given a kernel pointer ( pointer to a given kernel data structure),  how
can we find the appropriate VM area instance? 

for a userland pointer , we can do:
 
	u_vma=find_vma(current->mm, u_ptr)


Thanks
Fabrice




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