linux-kernel - Re: [PATCH v5 4/4] mm: Introduce per-thpsize swapin control policy

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Message-ID: <CAGsJ_4wr618sSA1dytqTXkpW-X8ujGhDUvsW5Xs=2uivhKB9cg@mail.gmail.com>
Date: Mon, 12 Aug 2024 20:44:06 +1200
From: Barry Song <21cnbao@...il.com>
To: Christoph Hellwig <hch@...radead.org>
Cc: Chris Li <chrisl@...nel.org>, Matthew Wilcox <willy@...radead.org>, akpm@...ux-foundation.org, 
	linux-mm@...ck.org, ying.huang@...el.com, baolin.wang@...ux.alibaba.com, 
	david@...hat.com, hannes@...xchg.org, hughd@...gle.com, 
	kaleshsingh@...gle.com, kasong@...cent.com, linux-kernel@...r.kernel.org, 
	mhocko@...e.com, minchan@...nel.org, nphamcs@...il.com, ryan.roberts@....com, 
	senozhatsky@...omium.org, shakeel.butt@...ux.dev, shy828301@...il.com, 
	surenb@...gle.com, v-songbaohua@...o.com, xiang@...nel.org, 
	yosryahmed@...gle.com
Subject: Re: [PATCH v5 4/4] mm: Introduce per-thpsize swapin control policy

On Mon, Aug 12, 2024 at 8:27 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> On Thu, Aug 01, 2024 at 01:55:51PM -0700, Chris Li wrote:
> > Currently Android uses zram and it needs to be the Android team's
> > decision to move from zram to something else. I don't see that
> > happening any time soon. There are practical limitations.
>
> No one can tell anyone to stop using things.  But we can stop adding
> new hacks for this, and especially user facing controls.

Well, this user-facing control has absolutely nothing to do with zram-related
hacks.  It's meant to address a general issue, mainly concerning slow-speed
swap devices like SSDs, as suggested in Ying's comment on v4.

Thanks
Barry