Re: [PATCH 08/12] xfs: Remove the macro XFS_BUF_SET_PTR

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Mon, Jul 25, 2011 at 10:57:36AM -0500, Alex Elder wrote:
> > Btw, nice follow-on cleanups would be to kill off the xfs_caddr_t and
> > __psint_t/__psunsigned_t types entirely.
> 
> Yes.  What do you suggest to use for a pointer-sized
> type?  Just cast to (long) and rely on the usual arithmetic
> conversions to do the right thing?

The correct C99 type is (u)intptr_t.  In the kernel we only have
uintptr_t, with ACPI defining a local version of intptr_t.  I'd suggest
trying to stick to uintptr_t if we can, and if we really need a signed
version add intptr_t to the common headers - it can unconditionally be
typedef to long in Linux anyway.