Re: [PATCH 4/6] sysctl: remove all extern declaration from sysctl.c

[Eric W. Biederman]

Christoph Hellwig <hch@xxxxxx> writes:

> Extern declarations in .c files are a bad style and can lead to
> mismatches.  Use existing definitions in headers where they exist,
> and otherwise move the external declarations to suitable header
> files.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  include/linux/coredump.h |  6 ++++++
>  include/linux/file.h     |  2 ++
>  include/linux/mm.h       |  2 ++
>  include/linux/mmzone.h   |  2 ++
>  include/linux/sysctl.h   |  8 +++++++
>  kernel/sysctl.c          | 45 +++-------------------------------------
>  6 files changed, 23 insertions(+), 42 deletions(-)
>
> diff --git a/include/linux/coredump.h b/include/linux/coredump.h
> index abf4b4e65dbb..0fe8f3131e97 100644
> --- a/include/linux/coredump.h
> +++ b/include/linux/coredump.h
> @@ -22,4 +22,10 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
>  static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
>  #endif
>  
> +extern int core_uses_pid;
> +extern char core_pattern[];
> +extern unsigned int core_pipe_limit;
> +extern int pid_max;
> +extern int pid_max_min, pid_max_max;

These last two pid_max, pid_max_mind and pid_max_max would make more
sense in pid.h as they have nothing to do with coredumps.

> +
>  #endif /* _LINUX_COREDUMP_H */