linux-kernel - Re: [PATCH 7/7] pid: get pid_t ppid of task in init_pid

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Date:	Mon, 17 Mar 2014 16:15:29 -0400
From:	Eric Paris <eparis@...hat.com>
To:	Tony Luck <tony.luck@...il.com>
Cc:	Richard Guy Briggs <rgb@...hat.com>, linux-audit@...hat.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	sgrubb@...hat.com, Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Oleg Nesterov <oleg@...hat.com>,
	stable <stable@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH 7/7] pid: get pid_t ppid of task in init_pid_ns

On Mon, 2014-03-17 at 13:14 -0700, Tony Luck wrote:
> On Thu, Jan 23, 2014 at 11:32 AM, Richard Guy Briggs <rgb@...hat.com> wrote:
> > Added the functions task_ppid_nr_ns() and task_ppid_nr() to abstract the lookup
> > of the PPID (real_parent's pid_t) of a process, including rcu locking, in the
> > arbitrary and init_pid_ns.
> > This provides an alternative to sys_getppid(), which is relative to the child
> > process' pid namespace.
> ...
> > +static int pid_alive(const struct task_struct *p);
> 
> This patch (or some successor version of it) showed up
> in next-20140317 and the above declaration caused a
> bunch of warnings on ia64:
> 
> include/linux/sched.h:1718: warning: 'pid_alive' declared inline after
> being called
> 
> [repeated 1675 times across files that include this]
> 
> The ia64 complier is a lot happier if "inline" is added like this:
> 
> static inline int pid_alive(const struct task_struct *p);

Fixed for tomorrow.

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