linux-kernel - Re: [PATCH v5 00/21] mm/zsmalloc: add zpdesc memory descriptor for zswap.zpool

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Message-ID: <CAJD7tkakcaLVWi0viUqaW0K81VoCuGmkCHN4KQXp5+SSJLMB9g@mail.gmail.com>
Date: Tue, 6 Aug 2024 12:34:25 -0700
From: Yosry Ahmed <yosryahmed@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: alexs@...nel.org, Vitaly Wool <vitaly.wool@...sulko.com>, 
	Miaohe Lin <linmiaohe@...wei.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	minchan@...nel.org, willy@...radead.org, senozhatsky@...omium.org, 
	david@...hat.com, 42.hyeyoo@...il.com, nphamcs@...il.com
Subject: Re: [PATCH v5 00/21] mm/zsmalloc: add zpdesc memory descriptor for zswap.zpool

On Tue, Aug 6, 2024 at 12:32 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Tue,  6 Aug 2024 10:22:47 +0800 alexs@...nel.org wrote:
>
> > According to Metthew's plan, the page descriptor will be replace by a 8
> > bytes mem_desc on destination purpose.
> > https://lore.kernel.org/lkml/YvV1KTyzZ+Jrtj9x@casper.infradead.org/
> >
> > Here is a implement on zsmalloc to replace page descriptor by 'zpdesc',
> > which is still overlay on struct page now. but it's a step move forward
> > above destination.
>
> So the sole reason for this work is as a part of the mem_desc
> conversion.  I'd like to hear from others who are to be involved in
> that conversion, please - it this patchset something we should be
> merging?
>

Matthew asked an important question here that needs to be answered by
zsmalloc experts:
https://lore.kernel.org/lkml/Zq0zucMFsOwATsAC@casper.infradead.org/