Re: [Containers] [PATCH 2/7] pid: Add do_each_pid_task

[Andrew Morton <akpm@osdl.org>]

On Tue, 15 Aug 2006 22:10:43 -0500
"Serge E. Hallyn" <serue@us.ibm.com> wrote:

> Quoting Eric W. Biederman (ebiederm@xmission.com):
> > To avoid pid rollover confusion the kernel needs to work with
> > struct pid * instead of pid_t.  Currently there is not an iterator
> > that walks through all of the tasks of a given pid type starting
> > with a struct pid.  This prevents us replacing some pid_t instances
> > with struct pid.  So this patch adds do_each_pid_task which walks
> > through the set of task for a given pid type starting with a struct pid.
> > 
> > Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
> > ---
> >  include/linux/pid.h |   13 +++++++++++++
> >  1 files changed, 13 insertions(+), 0 deletions(-)
> > 
> > diff --git a/include/linux/pid.h b/include/linux/pid.h
> > index 93da7e2..4007114 100644
> > --- a/include/linux/pid.h
> > +++ b/include/linux/pid.h
> > @@ -118,4 +118,17 @@ #define while_each_task_pid(who, type, t
> >  				1; }) );				\
> >  	}
> >  
> > +#define do_each_pid_task(pid, type, task)				\
> 
> Hmm, defining do_each_pid_task right after do_each_task_pid could result
> in some frustration  :)

That's all right - developers can read the comments to work out what each
one does.

<seems I'm having a sarcastic day>

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