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

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Date:   Fri, 20 Apr 2018 09:58:24 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Heiko Carstens <heiko.carstens@...ibm.com>
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>,
        GNU C Library <libc-alpha@...rceware.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Albert ARIBAUD <albert.aribaud@...ev.fr>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        "open list:RALINK MIPS ARCHITECTURE" <linux-mips@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        sparclinux <sparclinux@...r.kernel.org>
Subject: Re: [PATCH v3 04/17] y2038: s390: Remove unneeded ipc uapi header files

On Fri, Apr 20, 2018 at 9:54 AM, Heiko Carstens
<heiko.carstens@...ibm.com> wrote:
> 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>

Thanks, added to the patch.

     Arnd