Re: [PATCH 4/4] mqueue namespace: adapt sysctl

[Andrew Morton <akpm@linux-foundation.org>]

On Wed, 25 Feb 2009 01:32:45 +0300
Alexey Dobriyan <adobriyan@gmail.com> wrote:

> > > +proc_handler *proc_mq_dointvec = NULL;
> > > +proc_handler *proc_mq_dointvec_minmax = NULL;
> > > +#endif
> > 
> > looks odd.  Was this
> > 
> > --- a/ipc/mq_sysctl.c~mqueue-namespace-adapt-sysctl-update-fix
> > +++ a/ipc/mq_sysctl.c
> > @@ -52,8 +52,8 @@ static int proc_mq_dointvec_minmax(ctl_t
> >  					lenp, ppos);
> >  }
> >  #else
> > -proc_handler *proc_mq_dointvec = NULL;
> > -proc_handler *proc_mq_dointvec_minmax = NULL;
> > +#define proc_mq_dointvec NULL
> > +#define proc_mq_dointvec_minmax NULL
> >  #endif
> 
> I hope, not.
> 
> "#define foo NULL" is the least intrusive thing.

well the original code would have spat a warning at compile time
then tried to execute code from BSS at runtime, methinks.

But I can't be assed working out how to disable CONFIG_SYSCTL to
test that.  Gawd I hate `select'.