netdev - Re: [PATCH 04/17] asm-generic: Remove unneeded __ARCH_WANT_SYS

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Message-ID: <CAMuHMdXzNwNxbrcbJxdh+ON5MU7Wp2OPYriHq9mk3eViXOWaOg@mail.gmail.com>
Date:   Wed, 25 Apr 2018 20:36:43 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     y2038 Mailman List <y2038@...ts.linaro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        libc-alpha <libc-alpha@...rceware.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        netdev <netdev@...r.kernel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        "Albert ARIBAUD (3ADEV)" <albert.aribaud@...ev.fr>,
        Peter Zijlstra <peterz@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: [PATCH 04/17] asm-generic: Remove unneeded __ARCH_WANT_SYS_LLSEEK macro

On Wed, Apr 25, 2018 at 6:02 PM, Arnd Bergmann <arnd@...db.de> wrote:
> The sys_llseek sytem call is needed on all 32-bit architectures and
> none of the 64-bit ones, so we can remove the __ARCH_WANT_SYS_LLSEEK guard
> and simplify the include/asm-generic/unistd.h header further.
>
> Since 32-bit tasks can run either natively or in compat mode on 64-bit
> architectures, we have to check for both !CONFIG_64BIT and CONFIG_COMPAT.
>
> There are a few 64-bit architectures that also reference sys_llseek
> in their 64-bit ABI (e.g. sparc), but I verified that those all
> select CONFIG_COMPAT, so the #if check is still correct here. It's
> a bit odd to include it in the syscall table though, as it's the
> same as sys_lseek() on 64-bit, but with strange calling conventions.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

For m68k:
Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds