[Devel] Re: [patch -mm 2/4] mqueue namespace : add unshare support

[Andrew Morton]

On Thu, 29 Nov 2007 11:28:28 +0100 Cedric Le Goater <clg at fr.ibm.com> wrote:

> >> Index: 2.6.24-rc3-mm2/include/linux/sched.h
> >> ===================================================================
> >> --- 2.6.24-rc3-mm2.orig/include/linux/sched.h
> >> +++ 2.6.24-rc3-mm2/include/linux/sched.h
> >> @@ -27,6 +27,7 @@
> >>  #define CLONE_NEWUSER		0x10000000	/* New user namespace */
> >>  #define CLONE_NEWPID		0x20000000	/* New pid namespace */
> >>  #define CLONE_NEWNET		0x40000000	/* New network namespace */
> >> +#define CLONE_NEWMQ		0x80000000	/* New posix mqueue namespace */
> > 
> > That's it :) We've run out of clone flags on 32-bit platforms :(
> 
> yes. 
> 
> I have been giving some thoughts to a clone2() to extend the flags

There appears to be little alternative.

> but
> andrew is preparing to recycle CLONE_DETACHED and CLONE_STOPPED for
> 2.6.26. Some we might have some more time in front of us.

CLONE_DETACHED proved to be in use.  There are no reports of anyone using
CLONE_STOPPED though.

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