Messages in this thread | | | Date | Sat, 25 May 2013 21:16:24 -0400 | From | KOSAKI Motohiro <> | Subject | Re: [PATCH v2 1/4] mm/memory-hotplug: fix lowmem count overflow when offline pages |
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> --- > mm/page_alloc.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 98cbdf6..23b921f 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -6140,6 +6140,8 @@ __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--; > + if (PageHighMem(page)) > + totalhigh_pages -= 1 << order; > for (i = 0; i < (1 << order); i++) > SetPageReserved((page+i)); > pfn += (1 << order);
memory hotplug don't support 32bit since it was born, at least, when the system has highmem. Why can't we disable memory hotremove when 32bit at compile time?
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