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@xxxxxxxxxxxxxxx> > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- 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>