Messages in this thread | | | Date | Tue, 31 Jul 2012 14:03:57 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH -alternative] mm: hugetlbfs: Close race during teardown of hugetlbfs shared page tables V2 (resend) |
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On 07/31/2012 08:46 AM, Mel Gorman wrote:
> mm: hugetlbfs: Correctly detect if page tables have just been shared > > Each page mapped in a processes address space must be correctly > accounted for in _mapcount. Normally the rules for this are > straight-forward but hugetlbfs page table sharing is different. > The page table pages at the PMD level are reference counted while > the mapcount remains the same. If this accounting is wrong, it causes > bugs like this one reported by Larry Woodman
> Signed-off-by: Mel Gorman<mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
-- All rights reversed
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