Gerd Hoffmann wrote:
>> How married are people to this crazy 2x "32 bits" model?
> 
> The tricky corner case are 32bit compat syscalls on 64bit kernel, where
> a noticable number of archs (IIRC at least ppc, mips and s390) can't
> pass unaligned 64bit values through the syscall abi.  The 32/32 split
> was done because of that.
> 
> I think using two unsigned longs instead of two u32 should work.  And
> allows us to handle 128bit file offsets on 64bit.  That I'll call
> future-proof interface!  Nevertheless I'd like to have comments from the
> arch maintainers on the idea.

Patch attached for comments (builds, but otherwise not tested yet).

cheers,
  Gerd