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Thu, 29 May 2025 14:01:10 +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 6HNENaZoOGjlPgAAD6G6ig (envelope-from ); Thu, 29 May 2025 14:01:10 +0000 Message-ID: <4227e23b-b50f-4917-bd24-d2278116a383@suse.cz> Date: Thu, 29 May 2025 16:01:10 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/4] mm: ksm: refer to special VMAs via VM_SPECIAL in ksm_compatible() Content-Language: en-US To: Lorenzo Stoakes , Andrew Morton Cc: Alexander Viro , Christian Brauner , Jan Kara , "Liam R . Howlett" , Jann Horn , Pedro Falcato , David Hildenbrand , Xu Xin , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Stefan Roesch References: 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: 7bit X-Rspamd-Action: no action X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: ADEDF10001C X-Stat-Signature: krs76hfyw1gdt7y5zd5qigt1jf77t4jk X-Rspam-User: X-HE-Tag: 1748527272-788882 X-HE-Meta: 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 ETDWTOFQ A/lB9CZhgPKdKrxrG4IXaTEKNsPO1UIi2QozcDYpJHRER5/5g6QE2bqAenT1Q/84L/1rFycLWd4ArAySyK5REcRuCF7GXchR0p0M4Or9WsBv6cvq0vyxBFVfVwJXhm1AcDDSLxG0Iz5Elzlmfl4ayDHtsMf+fZwwLRLDS0PoXpF41JK9CCY8ArCzcoEIAnxzKu/M3aWokY90JlfqptyKLT9kMcPVtJiXDdedUhw6zNFigcibjrRwPDefLoq9eEjdrdkbzhfS3cFxCoP9Y0+U6CnrOQhQ+lECH38tRB0CbF3IiSwIPHORlg9HQc1NRe9eji6Zn3Qjv8whlfpfNqMX9hiiKEYHbNjEHLuiZky+gxR6aLeqNhyxZTrEMMQzg+smSxCCR 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 5/21/25 20:20, Lorenzo Stoakes wrote: > There's no need to spell out all the special cases, also doing it this way > makes it absolutely clear that we preclude unmergeable VMAs in general, and > puts the other excluded flags in stark and clear contrast. > > Signed-off-by: Lorenzo Stoakes > Acked-by: David Hildenbrand > Reviewed-by: Chengming Zhou Reviewed-by: Vlastimil Babka