Re: [RFC: 2.6 patch] kernel/sys.c: remove unused exports

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On Thu, Jun 29, 2006 at 01:06:33PM -0700, Andrew Morton wrote:
> On Thu, 29 Jun 2006 21:58:28 +0200
> Adrian Bunk <[email protected]> wrote:
> 
> > On Thu, Jun 29, 2006 at 12:44:00PM -0700, Andrew Morton wrote:
> > > On Thu, 29 Jun 2006 12:36:08 -0700
> > > Andrew Morton <[email protected]> wrote:
> > > 
> > > > On Thu, 29 Jun 2006 21:19:40 +0200
> > > > Adrian Bunk <[email protected]> wrote:
> > > > 
> > > > > This patch removes the following unused exports:
> > > > > - EXPORT_SYMBOL:
> > > > >   - in_egroup_p
> > > > > - EXPORT_SYMBOL_GPL's:
> > > > >   - kernel_restart
> > > > >   - kernel_halt
> > > > 
> > > > Switch 'em to EXPORT_UNUSED_SYMBOL and I'll stop dropping your patches ;)
> > > > 
> > > 
> > > If doing this, I'd suggest it be done thusly:
> > > 
> > > EXPORT_UNUSED_SYMBOL(in_egroup_p);	/* June 2006 */
> > > 
> > > to aid later decision-making.
> > 
> > I had some bad experiences with following processes you suggest the 
> > doesn't remove the symbol immediately:
> > 
> > As you wanted me to do, I scheduled the EXPORT_SYMBOL(insert_resource) 
> > for removal on 2 May 2005 with both __deprecated_for_modules and an 
> > entry in feature-removal-schedule.txt with the target date April 2006.
> > 
> > On 11 Apr 2006, I sent the patch to implement this scheduled removal.
> > 
> > As of today, the latter patch is still stuck in -mm (which isn't better 
> > than having it dropped) although it's long overdue.
> 
> Blame Greg ;)

Why?

> > Do you understand why I distrust your "to aid later decision-making"?
> 
> You'll cope.
> 
> > Can you state publically "If there's still no in-kernel user after six 
> > months, the removal is automatically ACK'ed."?
> 
> 6 or 12.  We haven't decided.  6 sounds OK.  If nobody complains.  If
> they do, we rethink a particular export.

OK, I hope I'll have more luck with this process.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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