linux-kernel - Re: [PATCH 1/1] signal: Introduce kill_pid_ns

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Message-Id: <20080717141005.5534fbc2.akpm@linux-foundation.org>
Date:	Thu, 17 Jul 2008 14:10:05 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Daniel Hokka Zakrisson" <daniel@...ac.com>
Cc:	ebiederm@...ssion.com, xemul@...nvz.org, sukadev@...ibm.com,
	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, oleg@...sign.ru
Subject: Re: [PATCH 1/1] signal: Introduce kill_pid_ns_info

On Thu, 17 Jul 2008 21:37:36 +0200 (CEST)
"Daniel Hokka Zakrisson" <daniel@...ac.com> wrote:

> Author: Eric W. Biederman <ebiederm@...ssion.com>
> 
> Implement the basic helper function that walks all of the processes in a
> pid namespace and sends them all a signal.
> 
> Both locations that could use this functions are also updated to use this
> function.
> 
> I use find_ge_pid instead of for_each_process because it has a chance of
> not touching every process in the system.
> 
> [daniel@...ac.com: Optimize away nr <= 1 check, against latest Linus tree]
> Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
> Signed-off-by: Daniel Hokka Zakrisson <daniel@...ac.com>
> 
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index ba2f859..83597f8 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1778,6 +1778,8 @@ extern void release_task(struct task_struct * p);
>  extern int send_sig_info(int, struct siginfo *, struct task_struct *);
> extern int force_sigsegv(int, struct task_struct *);

Space-stuffed

>  extern int force_sig_info(int, struct siginfo *, struct task_struct *);
> +extern int __kill_pid_ns_info(int sig, struct siginfo *info, struct
> pid_namespace *ns);

word-wrapped

> +extern int kill_pid_ns_info(int sig, struct siginfo *info, struct
> pid_namespace *ns);
>  extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid
> *pgrp);
>  extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
> extern int kill_pid_info_as_uid(int, struct siginfo *, struct pid *,
> uid_t, uid_t, u32);
> diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
> index 98702b4..9226423 100644
> --- a/kernel/pid_namespace.c
> +++ b/kernel/pid_namespace.c
> @@ -153,29 +153,14 @@ void free_pid_ns(struct kref *kref)
> 
>  void zap_pid_ns_processes(struct pid_namespace *pid_ns)
>  {
> -	int nr;
>  	int rc;

but at least the tabs weren't replaced with spaces!

Fix and resend, please.
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