Re: [PATCH] Define CLONE_NEWPID flag

[Herbert Poetzl <herbert@13thfloor.at>]

On Wed, Mar 21, 2007 at 01:39:38PM -0700, Andrew Morton wrote:
> On Wed, 21 Mar 2007 12:41:03 -0700
> sukadev@us.ibm.com wrote:
> 
> > This was discussed on containers and we thought it would be useful
> > to reserve this flag.
> > ---
> > 
> > From: Sukadev Bhattiprolu <sukadev@us.ibm.com>
> > Subject: [PATCH] Define CLONE_NEWPID flag
> > 
> > Define CLONE_NEWPID flag that will be used to clone pid namespaces.
> > 
> > Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
> > ---
> >  include/linux/sched.h |    1 +
> >  1 file changed, 1 insertion(+)
> > 
> > Index: lx26-21-rc3-mm2/include/linux/sched.h
> > ===================================================================
> > --- lx26-21-rc3-mm2.orig/include/linux/sched.h	2007-03-20 20:13:19.000000000 -0700
> > +++ lx26-21-rc3-mm2/include/linux/sched.h	2007-03-21 11:10:33.000000000 -0700
> > @@ -26,6 +26,7 @@
> >  #define CLONE_STOPPED		0x02000000	/* Start in stopped state */
> >  #define CLONE_NEWUTS		0x04000000	/* New utsname group? */
> >  #define CLONE_NEWIPC		0x08000000	/* New ipcs */
> > +#define CLONE_NEWPID		0x10000000      /* New pid namespace */
> 
> Do we actually have any need to reserve it at this time?  
> I'd have thought that we could defer adding this until we 
> have some code in-kernel which uses it.

FWIW, I'm fine with the reservation, we won't get around
it for the pid space, so we can as well register it now
YMMV

best,
Herbert

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