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Wed, 21 Jan 2026 14:22:09 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 3Z4bCxHhcGmiZAAAD6G6ig (envelope-from ); Wed, 21 Jan 2026 14:22:09 +0000 Message-ID: Date: Wed, 21 Jan 2026 15:22:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 11/21] slab: remove SLUB_CPU_PARTIAL Content-Language: en-US To: Suren Baghdasaryan Cc: Harry Yoo , Petr Tesarik , Christoph Lameter , David Rientjes , Roman Gushchin , Hao Li , Andrew Morton , Uladzislau Rezki , "Liam R. Howlett" , Sebastian Andrzej Siewior , Alexei Starovoitov , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev, bpf@vger.kernel.org, kasan-dev@googlegroups.com References: <20260116-sheaves-for-all-v3-0-5595cb000772@suse.cz> <20260116-sheaves-for-all-v3-11-5595cb000772@suse.cz> From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJnyBr8BQka0IFQAAoJECJPp+fMgqZkqmMQ AIbGN95ptUMUvo6aAdhxaOCHXp1DfIBuIOK/zpx8ylY4pOwu3GRe4dQ8u4XS9gaZ96Gj4bC+ jwWcSmn+TjtKW3rH1dRKopvC07tSJIGGVyw7ieV/5cbFffA8NL0ILowzVg8w1ipnz1VTkWDr 2zcfslxJsJ6vhXw5/npcY0ldeC1E8f6UUoa4eyoskd70vO0wOAoGd02ZkJoox3F5ODM0kjHu Y97VLOa3GG66lh+ZEelVZEujHfKceCw9G3PMvEzyLFbXvSOigZQMdKzQ8D/OChwqig8wFBmV QCPS4yDdmZP3oeDHRjJ9jvMUKoYODiNKsl2F+xXwyRM2qoKRqFlhCn4usVd1+wmv9iLV8nPs 2Db1ZIa49fJet3Sk3PN4bV1rAPuWvtbuTBN39Q/6MgkLTYHb84HyFKw14Rqe5YorrBLbF3rl M51Dpf6Egu1yTJDHCTEwePWug4XI11FT8lK0LNnHNpbhTCYRjX73iWOnFraJNcURld1jL1nV r/LRD+/e2gNtSTPK0Qkon6HcOBZnxRoqtazTU6YQRmGlT0v+rukj/cn5sToYibWLn+RoV1CE Qj6tApOiHBkpEsCzHGu+iDQ1WT0Idtdynst738f/uCeCMkdRu4WMZjteQaqvARFwCy3P/jpK uvzMtves5HvZw33ZwOtMCgbpce00DaET4y/UzsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZ8gcVAUJFhTonwAKCRAiT6fnzIKmZLY8D/9uo3Ut9yi2YCuASWxr7QQZ lJCViArjymbxYB5NdOeC50/0gnhK4pgdHlE2MdwF6o34x7TPFGpjNFvycZqccSQPJ/gibwNA zx3q9vJT4Vw+YbiyS53iSBLXMweeVV1Jd9IjAoL+EqB0cbxoFXvnjkvP1foiiF5r73jCd4PR rD+GoX5BZ7AZmFYmuJYBm28STM2NA6LhT0X+2su16f/HtummENKcMwom0hNu3MBNPUOrujtW khQrWcJNAAsy4yMoJ2Lw51T/5X5Hc7jQ9da9fyqu+phqlVtn70qpPvgWy4HRhr25fCAEXZDp xG4RNmTm+pqorHOqhBkI7wA7P/nyPo7ZEc3L+ZkQ37u0nlOyrjbNUniPGxPxv1imVq8IyycG AN5FaFxtiELK22gvudghLJaDiRBhn8/AhXc642/Z/yIpizE2xG4KU4AXzb6C+o7LX/WmmsWP Ly6jamSg6tvrdo4/e87lUedEqCtrp2o1xpn5zongf6cQkaLZKQcBQnPmgHO5OG8+50u88D9I rywqgzTUhHFKKF6/9L/lYtrNcHU8Z6Y4Ju/MLUiNYkmtrGIMnkjKCiRqlRrZE/v5YFHbayRD dJKXobXTtCBYpLJM4ZYRpGZXne/FAtWNe4KbNJJqxMvrTOrnIatPj8NhBVI0RSJRsbilh6TE m6M14QORSWTLRg== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 5E12F40008 X-Stat-Signature: 8rom1oqfx1zympanx3ntwshaykbiqj7z X-HE-Tag: 1769005331-865313 X-HE-Meta: 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 8JBICLPD P0FHPVX+24sP/FykgFiSp/7wZyJnqZLLrpU5DULkBmv9QRokQmYMsnWExc+WTRIUbFwzWlQENxjAbzokire5F57kT7DkLNXFsOqF4LgkhXAobxzvEKgiInhiqtY7dL5krzaW3ZeSqj1b6KibFbgWTJigySjyQcPxJdIQ7e1DFx9Grl5qe7rQKabiVQVUxU5OdV+BenkV1Q+CE5hi3N31JkSCx8VtIsLTz7w5b7b7AEOjBN2TCEFAwQuBmKUSDNhpn7rrOh/5+8K4znNchpBsyVOWtnQWSI4zwW7u3OcLl2eoFqe4wstHiI5rpC56gKi/8EVPD2YZZ94jc23HvJKkgOU9luCJv4Xlr19kWguMINRLJS67Uvu4e8uCceDSOlxkc9aNi 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 1/20/26 23:25, Suren Baghdasaryan wrote: > On Fri, Jan 16, 2026 at 2:40 PM Vlastimil Babka wrote: >> >> We have removed the partial slab usage from allocation paths. Now remove >> the whole config option and associated code. >> >> Reviewed-by: Suren Baghdasaryan > > I did? Hmm looks like you didn't. Wonder if I screwed up, or b4 did. Sorry about that. > Well, if so, I missed some remaining mentions about cpu partial caches: > - slub.c has several hits on "cpu partial" in the comments. > - there is one hit on "put_cpu_partial" in slub.c in the comments. Should be addressed later by [PATCH v3 18/21] slab: update overview comments. I'll grep the result if anything is missing. > Should we also update Documentation/ABI/testing/sysfs-kernel-slab to > say that from now on cpu_partial control always reads 0? Uh those weird files. Does anyone care? I'd do that separately as well... > Once addressed, please feel free to keep my Reviewed-by. Thanks!