Re: [merged mm-hotfixes-stable] mm-memcontrol-respect-zswapwriteback-setting-from-parent-cg-too.patch removed from -mm tree

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On Tue, Sep 3, 2024 at 12:53 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Tue, 3 Sep 2024 10:53:21 -0700 Yosry Ahmed <yosryahmed@xxxxxxxxxx> wrote:
>
> > > The inconsistency became more noticeable after I introduced the
> > > MemoryZSwapWriteback= systemd unit setting [2] for controlling the knob.
> > > The patch assumed that the kernel would enforce the value of parent
> > > cgroups.  It could probably be workarounded from systemd's side, by going
> > > up the slice unit tree and inheriting the value.  Yet I think it's more
> > > sensible to make it behave consistently with zswap.max and friends.
> > >
> > > [1] https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Disable_zswap_writeback_to_use_the_swap_space_only_for_hibernation
> > > [2] https://github.com/systemd/systemd/pull/31734
> > >
> > > Link: https://lkml.kernel.org/r/20240823162506.12117-1-me@xxxxxxxxxxx
> > > Fixes: 501a06fe8e4c ("zswap: memcontrol: implement zswap writeback disabling")
> > > Signed-off-by: Mike Yuan <me@xxxxxxxxxxx>
> > > Reviewed-by: Nhat Pham <nphamcs@xxxxxxxxx>
> > > Acked-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
> >
> > We wanted to CC stable here, it's too late at this point, right?
>
> It has cc:stable?
>
> > > Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> > > Cc: Michal Hocko <mhocko@xxxxxxxxxx>
> > > Cc: Michal Koutný <mkoutny@xxxxxxxx>
> > > Cc: Muchun Song <muchun.song@xxxxxxxxx>
> > > Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
> > > Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
> > > Cc: <stable@xxxxxxxxxxxxxxx>
>
> ^^ here

Sorry for the noise, I'll go find an eye doctor.





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