On Wed, 2018-12-12 at 03:35 +0000, Wei Yang wrote:
> I see the above code is wrapped with CONFIG_DEBUG_VM on current Linus
> tree.
> This is removed by someone else?
Yes, e8abbd69957288 ("mm, memory_hotplug: be more verbose for memory
offline failures") got rid of the CONFIG_DEBUG_VM.
This commit is sitting in the -mmotm tree.
>
> > - put_page(page);
> > - /* Because we don't have big zone->lock.
> > we should
> > - check this again here. */
> > - if (page_count(page)) {
> > - not_managed++;
> > - ret = -EBUSY;
> > - break;
> > - }
> > }
> > + put_page(page);
> > }
> > if (!list_empty(&source)) {
> > - if (not_managed) {
> > - putback_movable_pages(&source);
> > - goto out;
> > - }
> > -
> > /* Allocate a new page from the nearest neighbor node
> > */
> > ret = migrate_pages(&source, new_node_page, NULL, 0,
> > MIGRATE_SYNC,
> > MR_MEMORY_HOTPLUG);
> > @@ -1426,7 +1412,7 @@ do_migrate_range(unsigned long start_pfn,
> > unsigned long end_pfn)
> > putback_movable_pages(&source);
> > }
> > }
> > -out:
> > +
> > return ret;
> > }
> >
> > --
> > 2.13.7
>
>
--
Oscar Salvador
SUSE L3
