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From: Masahiro Yamada <masahiroy@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Marek <michal.lkml@markovi.net>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 04/20] kbuild: scripts/install.sh: call sync before calling the bootloader installer
Date: Wed, 7 Apr 2021 20:03:18 +0900	[thread overview]
Message-ID: <CAK7LNAQ4ar1gM1+08EXUZYHvt38Bt_D+NZdhRyH8hfjecw2vEg@mail.gmail.com> (raw)
In-Reply-To: <20210407053419.449796-5-gregkh@linuxfoundation.org>

On Wed, Apr 7, 2021 at 2:34 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> It's good to ensure that the files are written out before calling the
> bootloader installer, as other architectures do, so call sync after
> doing the copying of the kernel and system map files.


I see 3 architectures that call 'sync' from install.sh

masahiro@grover:~/ref/linux$ find . -name install.sh  | xargs grep sync
./arch/nios2/boot/install.sh:sync
./arch/x86/boot/install.sh:       sync
./arch/m68k/install.sh:sync


As for nios2 and m68k, they do not call
any bootloader-specific setups.



> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  scripts/install.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/install.sh b/scripts/install.sh
> index af36c0a82f01..92d0d2ade414 100644
> --- a/scripts/install.sh
> +++ b/scripts/install.sh
> @@ -52,12 +52,12 @@ if [ -x /sbin/"${INSTALLKERNEL}" ]; then exec /sbin/"${INSTALLKERNEL}" "$@"; fi
>  # Default install - same as make zlilo
>  install "$2" "$4"/vmlinuz
>  install "$3" "$4"/System.map
> +sync
>
>  if [ -x /sbin/lilo ]; then
>         /sbin/lilo
>  elif [ -x /etc/lilo/install ]; then
>         /etc/lilo/install
>  else
> -       sync
>         echo "Cannot find LILO."
>  fi
> --
> 2.31.1
>

Why do we need 'sync' before lilo invocation?



If you want to ensure everything is flushed
to a disk before this scripts exits,
adding 'sync' at the end of the script
makes more sense, in my opinion.



   if [ -x /sbin/lilo ]; then
          /sbin/lilo
   elif [ -x /etc/lilo/install ]; then
          /etc/lilo/install
   else
         echo "Cannot find LILO."
   fi

   sync




This goes aligned with nios2 and m68k.



--
Best Regards

Masahiro Yamada

  reply	other threads:[~2021-04-07 11:04 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07  5:33 [PATCH 00/20] kbuild: unify the install.sh script usage Greg Kroah-Hartman
2021-04-07  5:34 ` [PATCH 01/20] kbuild: move x86 install script to scripts/install.sh Greg Kroah-Hartman
2021-04-09  3:08   ` Kees Cook
2021-04-07  5:34 ` [PATCH 02/20] kbuild: scripts/install.sh: properly quote all variables Greg Kroah-Hartman
2021-04-07 10:59   ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 03/20] kbuild: scripts/install.sh: provide a "install" function Greg Kroah-Hartman
2021-04-07 11:01   ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 04/20] kbuild: scripts/install.sh: call sync before calling the bootloader installer Greg Kroah-Hartman
2021-04-07 11:03   ` Masahiro Yamada [this message]
2021-04-07  5:34 ` [PATCH 05/20] kbuild: scripts/install.sh: prepare for arch-specific bootloaders Greg Kroah-Hartman
2021-04-09  3:08   ` Kees Cook
2021-04-07  5:34 ` [PATCH 06/20] kbuild: scripts/install.sh: handle compressed/uncompressed kernel images Greg Kroah-Hartman
2021-04-07 11:04   ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 07/20] kbuild: scripts/install.sh: allow for the version number Greg Kroah-Hartman
2021-04-07 11:05   ` Masahiro Yamada
2021-04-07 13:03     ` Greg Kroah-Hartman
2021-04-07 13:21       ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 08/20] kbuild: riscv: use common install script Greg Kroah-Hartman
2021-04-07  5:34   ` Greg Kroah-Hartman
2021-04-09  3:09   ` Kees Cook
2021-04-09  3:09     ` Kees Cook
2021-04-07  5:34 ` [PATCH 09/20] kbuild: arm64: " Greg Kroah-Hartman
2021-04-07  5:34   ` Greg Kroah-Hartman
2021-04-07 14:30   ` Catalin Marinas
2021-04-07 14:30     ` Catalin Marinas
2021-04-09  3:08   ` Kees Cook
2021-04-09  3:08     ` Kees Cook
2021-04-09  6:37     ` Greg Kroah-Hartman
2021-04-09  6:37       ` Greg Kroah-Hartman
2021-04-07  5:34 ` [PATCH 10/20] kbuild: arm: " Greg Kroah-Hartman
2021-04-07  5:34   ` Greg Kroah-Hartman
2021-04-09  3:09   ` Kees Cook
2021-04-09  3:09     ` Kees Cook
2021-04-07  5:34 ` [PATCH 11/20] kbuild: ia64: " Greg Kroah-Hartman
2021-04-07 18:02   ` Sergei Trofimovich
2021-04-09  3:10   ` Kees Cook
2021-04-07  5:34 ` [PATCH 12/20] kbuild: m68k: " Greg Kroah-Hartman
2021-04-07  7:19   ` Geert Uytterhoeven
2021-04-09  3:10   ` Kees Cook
2021-04-07  5:34 ` [PATCH 13/20] kbuild: nds32: convert to use the common install scripts Greg Kroah-Hartman
2021-04-07 11:20   ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 14/20] kbuild: nios2: use common install script Greg Kroah-Hartman
2021-04-09  3:09   ` Kees Cook
2021-04-07  5:34 ` [PATCH 15/20] kbuild: parisc: " Greg Kroah-Hartman
2021-04-07 11:23   ` Masahiro Yamada
2021-04-14 16:30     ` Helge Deller
2021-04-14 17:51       ` Greg Kroah-Hartman
2021-04-07  5:34 ` [PATCH 16/20] kbuild: powerpc: " Greg Kroah-Hartman
2021-04-07  5:34   ` Greg Kroah-Hartman
2021-04-07 11:32   ` Masahiro Yamada
2021-04-07 11:32     ` Masahiro Yamada
2021-04-07  5:34 ` [PATCH 17/20] kbuild: s390: " Greg Kroah-Hartman
2021-04-07 12:15   ` Heiko Carstens
2021-04-09  3:10   ` Kees Cook
2021-04-07  5:34 ` [PATCH 18/20] kbuild: sh: remove unused " Greg Kroah-Hartman
2021-04-09  3:09   ` Kees Cook
2021-08-24 15:22   ` Masahiro Yamada
2021-08-27 14:02     ` Greg Kroah-Hartman
2021-04-07  5:34 ` [PATCH 19/20] kbuild: sparc: use common " Greg Kroah-Hartman
2021-04-09  3:09   ` Kees Cook
2021-04-07  5:34 ` [PATCH 20/20] kbuild: scripts/install.sh: update documentation Greg Kroah-Hartman
2021-04-07 11:45   ` Masahiro Yamada
2021-04-07  7:18 ` [PATCH 00/20] kbuild: unify the install.sh script usage Geert Uytterhoeven
2021-04-07  7:46   ` Greg Kroah-Hartman
2021-04-07  8:02     ` Russell King - ARM Linux admin
2021-04-07  8:07       ` Greg Kroah-Hartman
2021-04-07  8:14         ` Russell King - ARM Linux admin
2021-04-07  8:37           ` Greg Kroah-Hartman
2021-04-07 10:53             ` Masahiro Yamada
2021-04-09  3:12 ` Kees Cook

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