linux-kernel - Re: [PATCH 00/20] mm: zswap: cleanups

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Date: Tue, 30 Jan 2024 15:54:54 -0800
From: Nhat Pham <nphamcs@...il.com>
To: Yosry Ahmed <yosryahmed@...gle.com>
Cc: Johannes Weiner <hannes@...xchg.org>, Andrew Morton <akpm@...ux-foundation.org>, 
	Chengming Zhou <zhouchengming@...edance.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/20] mm: zswap: cleanups

On Tue, Jan 30, 2024 at 12:16 AM Yosry Ahmed <yosryahmed@...gle.com> wrote:
>
> Hey Johannes,
>
> On Mon, Jan 29, 2024 at 08:36:36PM -0500, Johannes Weiner wrote:
> > Cleanups and maintenance items that accumulated while reviewing zswap
> > patches. Based on akpm/mm-unstable + the UAF fix I sent just now.
>
> Patches 1 to 9 LGTM, thanks for the great cleanups!
>
> I am less excited about patches 10 to 20 though. Don't get me wrong, I
> am all of logically ordering the code. However, it feels like in this
> case, we will introduce unnecessary layers in the git history in a lot
> of places where I find myself checking the history regularly.
> Personally, I tend to jump around the file using vim search or using a
> cscope extension to find references/definitions, so I don't feel a need
> for such reordering.
>
> I am not objecting to it, but I just find it less appealing that the
> rest of the series.

As a frequent user of git blame, I kinda agree with it.

That said, zswap functions ordering hurts my brain a lot. So I vote
for the reordering, and for paying the price sooner rather than later.
The alternative is reordering sometimes in the future (which is just
delaying the pain), or never re-order at all (which sucks).

>
> >
> >  mm/zswap.c | 1961 +++++++++++++++++++++++++++++-----------------------------
> >  1 file changed, 971 insertions(+), 990 deletions(-)
> >