Re: [PATCH 2/2] mm/zswap: Support batch writeback in shrink_memcg()

From: Nhat Pham

Date: Fri Jul 17 2026 - 12:51:24 EST


On Thu, Jul 16, 2026 at 1:35 PM Yosry Ahmed <yosry@xxxxxxxxxx> wrote:
>
>
> It is a bit alarming that the store rejection rate is still 43% with
> batching, but we can worry about this later :)

Yeah I think it's unavoidable at the time the global shrinker is
awaken, unfortunately :( We need to kick off shrinking way ahead of
time if we want to avoid this, especially since the rate of zswap out
is going to be faster than the rate of writeback (CPU vs IO).

Sort of why we implement the proactive reclaimers :)