On Sun, Jun 04, 2017 at 03:42:35PM -0700, Hugh Dickins wrote:
> On Sun, 4 Jun 2017, Levin, Alexander (Sasha Levin) wrote:
>
> > From: Hugh Dickins <hughd@xxxxxxxxxx>
> >
> > [ Upstream commit b6789123bccba8b5feb9901ed2e8c3c39181979d ]
> >
> > Commit 6326fec1122c ("mm: Use owner_priv bit for PageSwapCache, valid
> > when PageSwapBacked") aliased PG_swapcache to PG_owner_priv_1 (and
> > depending on PageSwapBacked being true).
> >
> > As a result, the KPF_SWAPCACHE bit in '/proc/kpageflags' should now be
> > synthesized, instead of being shown on unrelated pages which just happen
> > to have PG_owner_priv_1 set.
>
> I think this does not belong in v4.9 LTS - though it would only be
> puzzling, not harmful there. It's a fix to an earlier v4.10 commit,
> and I wouldn't expect that earlier v4.10 commit to be added to v4.9 LTS
> (but perhaps my expectation is wrong - I'm not in stable@xxxxxxxxxxxxxxx,
> so wouldn't see all 111 of these mails).
Nope, it's actually not. I'll pull this commit out, thanks!
--
Thanks,
Sasha