Re: [PATCH] utilities: add helper functions for safe 64-bit integer operations as 32-bit halves

[Christoph Hellwig]

On Sun, Apr 22, 2007 at 01:38:23PM +0100, Alan Cox wrote:
> > > > over-engineering. Call it sector_upper32() do it the simple way and stop
> > > > trying to solve a problem we don't have
> > > 
> > > James said we have the same problem with dma_addr_t.
> > 
> > Yes.  It's in fact the far more common case and we have a bread of
> > macros dealing with the issue in various drivers.
> 
> So we still only need it for unsigned 32/64bit values ?

Yes.
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