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b=PZ5Q9uHbUhKuZcOxdhN8wKAybQx/ha0k6QUz9jeOmyL9u5PkrnGxfRfnpj/7h2CWx j0NUem97OttUtPfXr+ohp2wBfl499zuHANfI3yD8bhB8zFf4rJ6kfQevz2nTKgbTqP 7fNJXc79mEDQBbuFHCI7vWMe5aVFj4j7V2zMfVlo= Date: Thu, 4 Sep 2025 16:47:10 -0700 From: Andrew Morton To: Vitaly Wool Cc: hannes@cmpxchg.org, linux-kernel@vger.kernel.org, Vlastimil Babka , linux-mm@kvack.org Subject: Re: [PATCH 0/3] mm: remove zpool Message-Id: <20250904164710.210731847fe25d9419203886@linux-foundation.org> In-Reply-To: <20250904093325.2768507-1-vitaly.wool@konsulko.se> References: <20250829162212.208258-1-hannes@cmpxchg.org> <20250904093325.2768507-1-vitaly.wool@konsulko.se> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 4E37A40008 X-Stat-Signature: 8bd6yx1g8pemer6gd8h18cfpnwqo4x6b X-HE-Tag: 1757029632-640959 X-HE-Meta: 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 kMWXUs63 z709McYEU9HcvvQ6MCmfL2qbvlSEeDxCFodyRlvAUdFo31oYljD5BySmDu7uoNYqxGSMLwsnfGCAzHR2izhjR6d/+HVQDofJcywbjBlBl/0nxtxB1ImSD1FBciM13r80oyX6AAsNWxMgLDezjFSRr9JCyQcp3nHyewXmojBN5UBWStrRekeOSwdF9o/QIvxC4D6q/QztUc3L2zG7wcKrGoiDWJi4I+3Y+T1Hv4k5LaTXfsknupluiW6CBIWg6p8HIthzzDRs+IXWrNAdmniOyBI0/x7j386fYo5O+DIjrMRSOWEZgeXgZP9Kd5bjTUXWhXAEmhZkRmEG8Rsg= 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 Thu, 4 Sep 2025 11:33:24 +0200 Vitaly Wool wrote: > > With zswap using zsmalloc directly, there are no more in-tree users of > > this code. Remove it. > > > > Signed-off-by: Johannes Weiner > > Per the previous discussions, this gets a *NACK* from my side. There is > hardly anything _technical_ preventing new in-tree users of zpool API. > zpool API is neutral and well-defined, I don’t see *any* good reason for > it to be phased out. Well, we have the zpool code and we know it works. If a later need for the zpool layer is demonstrated then we can unremove the code at that time.