[PATCH v6 13/20] arm64: ilp32: share aarch32 syscall wrappers to ilp32

On Wednesday 30 December 2015 20:29:05 Yury Norov wrote:

So. For ilp32, the only wrapper left here, is compat_sys_mmap2_wrapper.
But this is workaroud, as comment tells:
        Note: off_4k (w5) is always in units of 4K. If we can't do the
        requested offset because it is not page-aligned, we return -EINVAL.

Not sure we should pull it to ILP32. If so, we can call sys_mmap_pgoff()
directly. And we don't need this patch at all therefore. Any throughts?

I think providing the 64-bit version of sys_mmap() would be the simplest
API, as that avoids any possible confusion about the shift amount (hardcoded
12 bits vs PAGE_BITS). It fits in with the other syscalls that pass an loff_t
value here.

	Arnd