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Wed, 10 Dec 2025 10:11:08 +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 FnBBJDxHOWkedwAAD6G6ig (envelope-from ); Wed, 10 Dec 2025 10:11:08 +0000 Message-ID: <80e63358-3016-4208-bfc5-242f201d4f94@suse.cz> Date: Wed, 10 Dec 2025 11:11:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Vlastimil Babka Subject: [GIT PULL] slab fix for 6.19-rc1 To: Linus Torvalds Cc: Andrew Morton , Harry Yoo , David Rientjes , Christoph Lameter , Roman Gushchin , "linux-mm@kvack.org" , LKML Content-Language: en-US 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== Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 67FEA100002 X-Rspamd-Server: rspam10 X-Stat-Signature: 94yf6gx3gqkt5por5oefttprrwfonxa5 X-HE-Tag: 1765361470-530619 X-HE-Meta: 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 fftOvXlA j5FULmO9mLDEyWaQkq6eV8SRUPwWfQdYAJqrcX5IM4XaiCfV7C/EO+MY4Q6F6ieEFv+BP8psajArtbziUMAr56OXlFE1ewi/ECiMYd0SxjVKQFZRKJqUyrClB8JdxPoDGcRMSV9mUdJW4Tb1ON6+IFfSIU7cKeZ5cXcAa/v8F0y8C/Mvu4sxxhZbACNvcpGoil2Clb6fP3VHIFCGw01Y44XZKXu3YH6GCnkVgsbaFtwqUHrJ8XncU4X2IsMOnj9kdJLqafGOhJtrhzyNc/ktDZ+8zmZP0D6EqPxAK2JEHp/ryuJrmxjAR+/lC5caFYALKy6m6ho7SjIFlwyvi5Jn6LxW3aP/J0Gc7I2ou 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: Hi Linus, please pull the slab fix from: git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git tags/slab-for-6.19-rc1 Fixing this perf regression in rc1 should save time for people integration- testing new code on top of it. Thanks, Vlastimil ====================================== - A stable fix for performance regression in tests that perform kmem_cache_destroy() a lot, due to unnecessarily wide scope of kvfree_rcu_barrier(). (Harry Yoo) ---------------------------------------------------------------- The following changes since commit b687034b1a4d85333ced0fe07f67b17276cccdc8: Merge tag 'slab-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab (2025-12-03 11:53:47 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git tags/slab-for-6.19-rc1 for you to fetch changes up to 0f35040de59371ad542b915d7b91176c9910dadc: mm/slab: introduce kvfree_rcu_barrier_on_cache() for cache destruction (2025-12-07 18:09:54 +0100) ---------------------------------------------------------------- Harry Yoo (1): mm/slab: introduce kvfree_rcu_barrier_on_cache() for cache destruction include/linux/slab.h | 7 +++++++ mm/slab.h | 1 + mm/slab_common.c | 52 +++++++++++++++++++++++++++++++++++-------------- mm/slub.c | 55 ++++++++++++++++++++++++++++------------------------ 4 files changed, 75 insertions(+), 40 deletions(-)