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Tue, 16 Jan 2024 12:22:39 -0800 (PST) MIME-Version: 1.0 References: <20230714194610.828210-1-hannes@cmpxchg.org> <20230717141250.GA866068@cmpxchg.org> <901409ed-504b-9500-54d8-e42f832e07b0@suse.cz> <20230717160227.GA867137@cmpxchg.org> <20240116120944.01f25e65d13f0fc7e2a2df34@linux-foundation.org> In-Reply-To: From: Yosry Ahmed Date: Tue, 16 Jan 2024 12:22:03 -0800 Message-ID: Subject: Re: [PATCH] mm: kill frontswap To: Matthew Wilcox Cc: Andrew Morton , Johannes Weiner , Vlastimil Babka , Christoph Hellwig , Nhat Pham , Domenico Cerasuolo , 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 X-Stat-Signature: 5ijp9wnqy5s8ixo9uujxsukhzr4ibrb9 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: ABA10C0005 X-Rspam-User: X-HE-Tag: 1705436560-130331 X-HE-Meta: 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 I1icBYaU VahAn2ap8agDJu3bD6mm/CRxateKZGsfqoUD/9dh1XSagY7xqjCjhUXS6BLZ/PNOMyvH2Mcdq4u+7Xfy7VOsHd9gjGst2Ac5X5cK8sj5WEXePZow9gcNq+V0MhEBnFCK52g6IQfdQjrAbZAdpNrASNvBSsN1GzG1RXe4qf1xAZu2HWesz2JXHbbfveGFRN4pMlnJ3ytN1D0Aie1d7J2R+vv9wEm42y+iIG8W22ieN5Wce+TQD/vVJdyniFtKYMStgnxXloseuzz66jAKaJm/YZiGXL/TWExygt5IHkY5oYG2abmO4QpTAoSKwRUSXNQzcXBz1NvPqKhzc/pr5nh+I/sIkmg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jan 16, 2024 at 12:18=E2=80=AFPM Matthew Wilcox 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 = 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.