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b=Ximf6L/FlFDOaC4lTZoERv3GRCOcXwpMDcTwLfIBdb9Y7QbGHchGwcV6jPEk2RLln Sijv3uG5gjBvBQmdHDch73vEq6QYRibVjWCh4aty4p61vKoEa+9ZGgM1FbU1iiEtnp 8Sn75qvrUvjgbGKnvWPhxZNc7B1SWoxQo7vFhyC4= Date: Tue, 16 Jan 2024 12:09:44 -0800 From: Andrew Morton To: Johannes Weiner Cc: Vlastimil Babka , Matthew Wilcox , Yosry Ahmed , Christoph Hellwig , Nhat Pham , Domenico Cerasuolo , konrad.wilk@oracle.com, vitaly.wool@konsulko.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm: kill frontswap Message-Id: <20240116120944.01f25e65d13f0fc7e2a2df34@linux-foundation.org> In-Reply-To: <20230717160227.GA867137@cmpxchg.org> References: <20230714194610.828210-1-hannes@cmpxchg.org> <20230717141250.GA866068@cmpxchg.org> <901409ed-504b-9500-54d8-e42f832e07b0@suse.cz> <20230717160227.GA867137@cmpxchg.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 2B0A716001E X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: wjp6ckfg5m8paf4jy93gggyfg8jk7cnh X-HE-Tag: 1705435792-835578 X-HE-Meta: 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 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 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?