On Fri, Jul 11, 2014 at 02:35:48PM -0400, Naoya Horiguchi wrote: > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> > > Currently pagewalker splits all THP pages on any clear_refs request. It's > not necessary. We can handle this on PMD level. > > One side effect is that soft dirty will potentially see more dirty memory, > since we will mark whole THP page dirty at once. > > Sanity checked with CRIU test suite. More testing is required. > > ChangeLog: > - move code for thp to clear_refs_pte_range() > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx> > Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> > Cc: Dave Hansen <dave.hansen@xxxxxxxxx> > Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> > Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Reviewed-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx> -- 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>