On Wed, Jun 23, 2010 at 12:14:02PM +0200, Christoph Hellwig wrote:

Any reason we need to differenciate between COMPAT_SYSCALL_DEFINE and
ARCH_COMPAT_SYSCALL_DEFINE?  We don't need this for native system calls,
so I can't see the reason to do it for compat system calls.

I think we wanted that to keep the sys32_ prefixed based naming, to avoid
collisions with generic compat handler names.