On Tue, Apr 25, 2017 at 05:46:18PM -0400, Johannes Weiner wrote: > On Tue, Apr 25, 2017 at 08:56:58PM +0800, Huang, Ying wrote: > > From: Huang Ying <ying.huang@xxxxxxxxx> > > > > If there is no compound map for a THP (Transparent Huge Page), it is > > possible that the map count of some sub-pages of the THP is 0. So it > > is better to split the THP before swapping out. In this way, the > > sub-pages not mapped will be freed, and we can avoid the unnecessary > > swap out operations for these sub-pages. > > > > Cc: Johannes Weiner <hannes@xxxxxxxxxxx> > > Signed-off-by: "Huang, Ying" <ying.huang@xxxxxxxxx> > > Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> > > CC Kirill to double check the reasoning here Looks good to me: Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> -- Kirill A. Shutemov -- 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>
