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 <[email protected]> > > > > 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 <[email protected]> > > Signed-off-by: "Huang, Ying" <[email protected]> > > Acked-by: Johannes Weiner <[email protected]> > > CC Kirill to double check the reasoning here
Looks good to me: Acked-by: Kirill A. Shutemov <[email protected]> -- Kirill A. Shutemov
