On Tue, Sep 27, 2016 at 06:08:06PM +0200, Jan Kara wrote:
> Currently we have two different structures for passing fault information
> around - struct vm_fault and struct fault_env. DAX will need more
> information in struct vm_fault to handle its faults so the content of
> that structure would become event closer to fault_env. Furthermore it
> would need to generate struct fault_env to be able to call some of the
> generic functions. So at this point I don't think there's much use in
> keeping these two structures separate. Just embed into struct vm_fault
> all that is needed to use it for both purposes.

Looks sensible, and I wonder why it's not been like that from
the start.  But given that you touched all users of the virtual_address
member earlier:  any reason not to move everyone to the unmasked variant
there and avoid having to pass the address twice?
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