remove set_fs calls from the coredump code v6

[Christoph Hellwig]

On Tue, May 05, 2020 at 03:28:50PM -0500, Eric W. Biederman wrote:
> We probably can.   After introducing a kernel_compat_siginfo that is
> the size that userspace actually would need.
> 
> It isn't something I want to mess with until this code gets merged, as I
> think the set_fs cleanups are more important.
> 
> 
> Christoph made some good points about how ugly the #ifdefs are in
> the generic copy_siginfo_to_user32 implementation.

Take a look at the series you are replying to, the magic x86 ifdefs are
entirely gone from the common code :)