Received-SPF: pass (google.com: domain of linux-kernel+bounces-28243-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
Precedence: bulk
MIME-Version: 1.0
References: <20230714194610.828210-1-hannes@cmpxchg.org> <ZLIVleBYOm4HIGTZ@casper.infradead.org>
 <20230717141250.GA866068@cmpxchg.org> <901409ed-504b-9500-54d8-e42f832e07b0@suse.cz>
 <20230717160227.GA867137@cmpxchg.org> <20240116120944.01f25e65d13f0fc7e2a2df34@linux-foundation.org>
 <ZabknuNmymSP0XgG@casper.infradead.org>
In-Reply-To: <ZabknuNmymSP0XgG@casper.infradead.org>
From: Yosry Ahmed <yosryahmed@google.com>
Date: Tue, 16 Jan 2024 12:22:03 -0800
Message-ID: <CAJD7tkZRnywCj4ha2hMcjQU7OjfR8DQ-Pi8K89NADxObCXvsMA@mail.gmail.com>
Subject: Re: [PATCH] mm: kill frontswap
To: Matthew Wilcox <willy@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, 
	Vlastimil Babka <vbabka@suse.cz>, Christoph Hellwig <hch@infradead.org>, Nhat Pham <nphamcs@gmail.com>, 
	Domenico Cerasuolo <cerasuolodomenico@gmail.com>, konrad.wilk@oracle.com, 
	vitaly.wool@konsulko.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

On Tue, Jan 16, 2024 at 12:18=E2=80=AFPM Matthew Wilcox <willy@infradead.or=
g> wrote:
>
> On Tue, Jan 16, 2024 at 12:09:44PM -0800, Andrew Morton wrote:
> > On Mon, 17 Jul 2023 12:02:27 -0400 Johannes Weiner <hannes@cmpxchg.org>=
 wrote:
> >
> > > The only user of frontswap is zswap, and has been for a long
> > > time. Have swap call into zswap directly and remove the indirection.
> >
> > This falls afoul of "mm: zswap: multiple zpools support".  Could we
> > please have a version against mm-unstable or linux-next?
>
> Did this email get caught in a timewarp?  Or is it referring to
> something that isn't commit 42c06a0e8ebe from six months ago?

+1. Both of these changes have been in Linus's tree for a while now.
Perhaps Andrew had this email prepared a while ago and never sent it,
and ended up fixing the problem himself.