RE: Silly question: How to map a user space page in kernel space?

["Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@intel.com>]

> Martin J. Bligh wrote:
>
> > Inaky Perez-Gonzalez wrote:
> >
> > I have a user space page (I know the 'struct page *' and I did a
> > get_page() on it so it doesn't go away to swap) and I need to be able to
> > access it with normal pointers (to do a bunch of atomic operations on
> > it). I cannot use get_user() and friends, just pointers.
> >
> > So, the question is, how can I map it into the kernel space in a
> > portable manner? Am I missing anything very basic here?
> 
> kmap or kmap_atomic

I am trying to use kmap_atomic(), but what is the meaning of the second
argument, km_type? I cannot find it anywhere, or at least the difference
between KM_USER0 and KM_USER1, which I am guessing are the ones I need.

Inaky Perez-Gonzalez--Not speaking for Intel--opinions are my own (and my
fault)
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