Messages in this thread | | | Date | Tue, 27 Dec 2011 13:57:01 +0100 | From | Michal Hocko <> | Subject | Re: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page |
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On Fri 23-12-11 21:38:38, Hillf Danton wrote: > From: Hillf Danton <dhillf@gmail.com> > Subject: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page > > If we have to hand back the newly allocated huge page to page allocator, > for any reason, the changed counter should be recovered. > > Cc: Michal Hocko <mhocko@suse.cz> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Signed-off-by: Hillf Danton <dhillf@gmail.com>
Broken since 2.6.27 (caff3a2c: hugetlb: call arch_prepare_hugepage() for surplus pages) so a stable material
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Thanks > --- > > --- a/mm/hugetlb.c Tue Dec 20 21:26:30 2011 > +++ b/mm/hugetlb.c Fri Dec 23 21:18:06 2011 > @@ -800,7 +800,7 @@ static struct page *alloc_buddy_huge_pag > > if (page && arch_prepare_hugepage(page)) { > __free_pages(page, huge_page_order(h)); > - return NULL; > + page = NULL; > } > > spin_lock(&hugetlb_lock); > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic
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