linux-kernel - Re: [PATCH v3 04/17] y2038: s390: Remove unneeded ipc uapi header files

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Date:   Fri, 20 Apr 2018 09:54:07 +0200
From:   Heiko Carstens <heiko.carstens@...ibm.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     y2038@...ts.linaro.org, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org, linux-arch@...r.kernel.org,
        libc-alpha@...rceware.org, tglx@...utronix.de,
        deepa.kernel@...il.com, viro@...iv.linux.org.uk,
        ebiederm@...ssion.com, albert.aribaud@...ev.fr,
        linux-s390@...r.kernel.org, schwidefsky@...ibm.com, x86@...nel.org,
        catalin.marinas@....com, will.deacon@....com,
        linux-mips@...ux-mips.org, jhogan@...nel.org, ralf@...ux-mips.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH v3 04/17] y2038: s390: Remove unneeded ipc uapi header
 files

On Thu, Apr 19, 2018 at 04:37:24PM +0200, Arnd Bergmann wrote:
> The s390 msgbuf/sembuf/shmbuf header files are all identical to the
> version from asm-generic.
> 
> This patch removes the files and replaces them with 'generic-y'
> statements, to avoid having to modify each copy when we extend sysvipc
> to deal with 64-bit time_t in 32-bit user space.
> 
> Note that unlike alpha and ia64, the ipcbuf.h header file is slightly
> different here, so I'm leaving the private copy.
> 
> To deal with 32-bit compat tasks, we also have to adapt the definitions
> of compat_{shm,sem,msg}id_ds to match the changes to the respective
> asm-generic files.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  arch/s390/include/asm/compat.h      | 32 ++++++++++++------------
>  arch/s390/include/uapi/asm/Kbuild   |  3 +++
>  arch/s390/include/uapi/asm/msgbuf.h | 38 ----------------------------
>  arch/s390/include/uapi/asm/sembuf.h | 30 -----------------------
>  arch/s390/include/uapi/asm/shmbuf.h | 49 -------------------------------------
>  5 files changed, 19 insertions(+), 133 deletions(-)
>  delete mode 100644 arch/s390/include/uapi/asm/msgbuf.h
>  delete mode 100644 arch/s390/include/uapi/asm/sembuf.h
>  delete mode 100644 arch/s390/include/uapi/asm/shmbuf.h

FWIW,

Acked-by: Heiko Carstens <heiko.carstens@...ibm.com>