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b=I5QGBQ6r7ZqvepDQxpeFXKCohbGwGRdI3luGvrzplan6E93TUNh0NgvoiIDm/ZosK 3vw84bdBkL8ymfDKARKykGfG9UZVlUQjE6yZoqU2IqWjxAzBTKXweUDgQ+7zoNhIo+ epUvuxmStcavY1Kl4T1V6mD0Vuk4GKkSfLBcVpTiZcXxbwIXXoxWiC0KoPn9THafvK +Vac0YAxhWtind3rR55NOCTUroUwSpgLx1gbfZwZhhdvzyXs99NSaM0nOrsKWLgE2u eFhs1zeQKPKAw4vK7g+uvIcTMVkBO2NtnoZ20queXiEV7X1ovYpMq29V0xp1KNFj4t LWsiOmFExLdiw== Message-ID: <7ee4fdcf-d773-4279-95f8-fc8300f7fd34@kernel.org> Date: Fri, 6 Feb 2026 19:57:06 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: ksm: initialize rmap values directly and make them const To: Matthew Wilcox Cc: xu.xin16@zte.com.cn, akpm@linux-foundation.org, chengming.zhou@linux.dev, hughd@google.com, wang.yaxin@zte.com.cn, yang.yang29@zte.com.cn, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <202602061522548871ohgXN8z0qq87sTSX-yZc@zte.com.cn> <5a1cf097-5ab4-41d1-a707-a709de6210cf@kernel.org> <3192eca4-1c90-44ed-8386-bf635db357c4@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 688454000E X-Stat-Signature: eyhkuxhiqzt844mfgprjfjigb9csrpbg X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1770404231-641395 X-HE-Meta: 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 ZDmvO7HI f0uQd0o30RWZmCNP5UgEJhCqDYZglT92u7tmcABlcXHpb6hguYv8iFu4qqQr1gOYHqz7GrfK3igHmQVZxoiPV23Ec1D21mIRlbJHQuF5WMEho0gVP6kyn2ggrHvuHeJGIZad3Nq9B0DFoWDC3gGBGa1J2iOcXJh4EAd+BnkL72gmRpA+ugXxa2vVfyUoODbaJZPiKGnSk2ZCuZDY93lp924D79buFQ6S2bEO10s4Z9yHPYCkCT4rc2M9Lliq04S0VfuVE 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 2/6/26 19:49, Matthew Wilcox wrote: > On Fri, Feb 06, 2026 at 07:09:56PM +0100, David Hildenbrand (Arm) wrote: >> On 2/6/26 18:34, David Hildenbrand (Arm) wrote: >>> >>> Once that changes we can revisit. ACK from me stands. >> >> And just to elaborate a bit: I don't see support for > 0 happening any time >> soon, and it will require significant changes that I am not even sure we >> would want to maintain upstream :) > > OK, you're the KSM maintainer. There doesn't seem to be anywhere else > in the KSM code which handles large folios, so this is just removing > code that was recently added? Yes! Sorry for not being clear. :) This is a fixup for a patch that introduced that code in the first place. It will be squashed into the original patch that's not upstream yet. -- Cheers, David