Re: [RFC PATCH 5/9] mm: zswap: remove zswap_same_filled_pages_enabled

[Yosry Ahmed]

On Tue, Mar 26, 2024 at 7:44 PM Chengming Zhou <chengming.zhou@xxxxxxxxx> wrote:
>
> On 2024/3/26 07:50, Yosry Ahmed wrote:
> > There is no logical reason to refuse storing same-filled pages more
> > efficiently and opt for compression. Remove the userspace knob.
> >
> > Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
>
> LGTM, should we also remove zswap_non_same_filled_pages_enabled?
> Not sure if it has real usage...

I am not aware of usages, but in theory you can use it if you
exclusively use zswap to optimize swapping zero-filled pages. Not sure
if anyone actually does that though. We can remove it if everyone else
agrees.

>
> Reviewed-by: Chengming Zhou <chengming.zhou@xxxxxxxxx>

Thanks!