| Date | Mon, 07 Oct 2013 10:01:46 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 06/63] mm: Prevent parallel splits during THP migration |
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On 10/07/2013 06:28 AM, Mel Gorman wrote: > THP migrations are serialised by the page lock but on its own that does > not prevent THP splits. If the page is split during THP migration then > the pmd_same checks will prevent page table corruption but the unlock page > and other fix-ups potentially will cause corruption. This patch takes the > anon_vma lock to prevent parallel splits during migration. > > Cc: stable <stable@vger.kernel.org> > Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
-- All rights reversed
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