[PATCH 7/8] ppc64: SPU file system

[Andi Kleen]

Greg KH <greg at kroah.com> writes:
>
> No, as Ben said, do not do this.  Use write.  And as you are only doing
> 1 type of ioctl, it shouldn't be an issue.  Also it will be faster than
> the ioctl due to lack of BKL usage :)

The problem is that if something is wrong regarding 32bit/64bit
compatibility (I am not saying Arnd will get it wrong, but
for a general rule someone will get it wrong and it has happened, e.g.
in ubsfs) then it is impossible to do any compat emulation
on read/write.

So I would actually prefer ioctl because it is sfer.

-Andi