On Tue, 2008-02-12 at 14:07 -0800, Badari Pulavarty wrote:
> On Tue, 2008-02-12 at 13:57 -0800, Dave Hansen wrote:
> > On Tue, 2008-02-12 at 13:56 -0800, Badari Pulavarty wrote:
> > >
> > > +static void __remove_section(struct zone *zone, unsigned long
> > > section_nr)
> > > +{
> > > + if (!valid_section_nr(section_nr))
> > > + return;
> > > +
> > > + unregister_memory_section(__nr_to_section(section_nr));
> > > + sparse_remove_one_section(zone, section_nr);
> > > +}
> >
> > I do think passing in a mem_section* here is highly superior. It makes
> > it impossible to pass a pfn in and not get a warning.
> >
>
> Only problem is, I need to hold pgdat_resize_lock() if pass *ms.
> If I don't hold the resize_lock, I have to re-evaluate.
What's wrong with holding the resize lock? What races, precisely, are
you trying to avoid?
> And also,
> I need to pass section_nr for decoding the mem_map anyway :(
See sparse.c::__section_nr(). It takes a mem_section* and returns a
section_nr.
-- Dave
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