linux-kernel - Re: [PATCH v4] mm/zswap: store <PAGE_SIZE compression failed page as-is

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Message-ID: <CAKEwX=P9T315JcOBOBGK21Zk8XyDruMTv_XEPa0CuD=oAN2QYQ@mail.gmail.com>
Date: Wed, 20 Aug 2025 10:32:51 -0700
From: Nhat Pham <nphamcs@...il.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Barry Song <21cnbao@...il.com>, SeongJae Park <sj@...nel.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, Chengming Zhou <chengming.zhou@...ux.dev>, 
	Johannes Weiner <hannes@...xchg.org>, Yosry Ahmed <yosry.ahmed@...ux.dev>, kernel-team@...a.com, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	Takero Funaki <flintglass@...il.com>, David Hildenbrand <david@...hat.com>, Baoquan He <bhe@...hat.com>, 
	Chris Li <chrisl@...nel.org>, Kairui Song <kasong@...cent.com>
Subject: Re: [PATCH v4] mm/zswap: store <PAGE_SIZE compression failed page as-is

On Tue, Aug 19, 2025 at 6:37 PM Herbert Xu <herbert@...dor.apana.org.au> wrote:
>
> On Wed, Aug 20, 2025 at 01:34:01PM +1200, Barry Song wrote:
> >
> > We might want to revisit the old thread to check whether it is now safe for us
> > to move to PAGE_SIZE in zswap now.
>
> It's perfectly safe as LZO was fixed months ago.

Perfect. Then I'll revive Chengming's patch (see [1]) to reduce the
compression buffer :)

[1]: https://lore.kernel.org/linux-mm/20231213-zswap-dstmem-v4-1-f228b059dd89@bytedance.com/

>
> Cheers,
> --
> Email: Herbert Xu <herbert@...dor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt