linux-kernel - Re: [PATCH] nilfs2: do not use unexported cpu_to_le32()/le32_to

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Date:   Sun, 7 Jul 2019 17:48:46 +0900
From:   Ryusuke Konishi <konishi.ryusuke@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
        linux-nilfs <linux-nilfs@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Joe Perches <joe@...ches.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu()
 in uapi header

Yamada-san,

> To automate this testing, I will merge the following for 5.3-rc1:
> https://patchwork.kernel.org/patch/11024715/

Thank you.  I could get the series through linux-next tree, and
could reproduce the build error by enabling the new coverage test
for nilfs2_ondisk.h.

Acked-by: Ryusuke Konishi <konishi.ryusuke@...il.com>

Regards,
Ryusuke Konishi

2019年7月7日(日) 15:42 Masahiro Yamada <yamada.masahiro@...ionext.com>:

>
> Konishi-san,
>
>
> On Sun, Jul 7, 2019 at 3:11 PM Ryusuke Konishi
> <konishi.ryusuke@....ntt.co.jp> wrote:
> >
> > Yamada-san,
> >
> > I'm sorry for not being able to follow.
> >
> > Could you tell me how did you find the build error?
> > Still I cannot reproduce the error in my environment.
>
>
> "You can compile UAPI headers in kernel-space" does not necessarily mean
> "you can compile them in user-space".
>
> To make sure UAPI headers can be included from libc etc.
> you must compile them after 'make headers_install',
> but people often miss to test that.
>
> To automate this testing, I will merge the following for 5.3-rc1:
> https://patchwork.kernel.org/patch/11024715/
>
> Once it lands in upstream, all the new breakage
> will be caught by 0-day bot.
>
> Currently, nilfs2_ondisk.h is excluded from the test coverage
> since it is broken.
>
> Thanks.
> Masahiro Yamada
>
>
>
> > Or, if it's right that we should not use
> > cpu_to_le{16,32,64}/le{16,32,64}_to_cpu() in UAPI  header files,
> > I will acknowledge the change and modify nilfs utilities to comply
> > with the guideline.
> >
> > Thanks,
> > Ryusuke Konishi
> >
> > 2019年7月7日(日) 13:31 Masahiro Yamada <yamada.masahiro@...ionext.com>:
> > >
> > > Hi Andrew,
> > >
> > > On Sun, Jul 7, 2019 at 12:38 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
> > >
> > > >
> > > > Seems fairly serious.  I'm thinking this needs a cc:stable?
> > >
> > >
> > > Ah, yes.
> > >
> > >
> > > Cc: linux-stable <stable@...r.kernel.org> # 4.9
> > > Fixes: e63e88bc53ba ("nilfs2: move ioctl interface and disk layout to
> > > uapi separately")
> > >
> > >
> > > Thanks.
> > >
> > > --
> > > Best Regards
> > > Masahiro Yamada
>
>
>
> --
> Best Regards
> Masahiro Yamada