On Wednesday, July 31, 2013 01:17:46 PM Bartlomiej Zolnierkiewicz wrote:
>
> Hi,
>
> On Wednesday, July 31, 2013 05:50:02 PM Joonyoung Shim wrote:
> > This reverts commit cea27eb2a202959783f81254c48c250ddd80e129.
>
> Could you please also include commit descriptions, i.e.
> commit cea27eb2a202959783f81254c48c250ddd80e129 ("mm/memory-hotplug: fix
> lowmem count overflow when offline pages")?
>
> > Fixed to adjust totalhigh_pages when hot-removing memory by commit
> > 3dcc0571cd64816309765b7c7e4691a4cadf2ee7, so that commit occurs
> > duplicated decreasing of totalhigh_pages.
>
> Could you please describe it a bit more (because it is non-obvious) how
> the commit cea27eb effectively does the same totalhigh_pages adjustment
> that is present in the commit 3dcc057?
Err, the other way around. How the commit 3dcc057 ("mm: correctly update
zone->managed_pages") does what cea27eb ("mm/memory-hotplug: fix lowmem
count overflow when offline pages") did.
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
> > Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
> > ---
> > The commit cea27eb2a202959783f81254c48c250ddd80e129 is only for stable,
> > is it right?
>
> It is in Linus' tree now but you're probably right that it should be
> limited to stable tree.
>
> Best regards,
> --
> Bartlomiej Zolnierkiewicz
> Samsung R&D Institute Poland
> Samsung Electronics
>
> > mm/page_alloc.c | 4 ----
> > 1 file changed, 4 deletions(-)
> >
> > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> > index b100255..2b28216 100644
> > --- a/mm/page_alloc.c
> > +++ b/mm/page_alloc.c
> > @@ -6274,10 +6274,6 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn)
> > list_del(&page->lru);
> > rmv_page_order(page);
> > zone->free_area[order].nr_free--;
> > -#ifdef CONFIG_HIGHMEM
> > - if (PageHighMem(page))
> > - totalhigh_pages -= 1 << order;
> > -#endif
> > for (i = 0; i < (1 << order); i++)
> > SetPageReserved((page+i));
> > pfn += (1 << order);
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>