Re: [PATCH v11 00/14] Multi-Gen LRU Framework

[Yu Zhao]

On Tue, May 17, 2022 at 8:05 PM Jens Axboe <axboe@xxxxxxxxx> wrote:
>
> On 5/17/22 7:46 PM, Yu Zhao wrote:
> > TLDR
> > ====
> > The current page reclaim is too expensive in terms of CPU usage and it
> > often makes poor choices about what to evict. This patchset offers an
> > alternative solution that is performant, versatile and
> > straightforward.
>
> Where's the changelog since v10?

Apologies for my laziness.

The changes are mainly nits, e.g., small refactorings, additional
comments, etc.; relatively major ones are:

* VM_BUG_ON() -> VM_WARN_ON_ONCE()
* Removed `depends on !MAXSMP`

There are no bug fixes or structural changes in v11. I do have a bug
fix [1] queued for the coming v12, which I have been benchmarking on
top of 5.19-rc1. So far I see no improvements or regressions, compared
with v10 on top of 5.18-rc1.

[1] https://forum.armbian.com/topic/20018-mglru-patches-to-bring-down-kswapd-cpu-usage