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b=jJW0SXJLeraETSisKmLGPZ7i/niPRtOH+C6mSo0yvHCASRUUPPEIxjgRf6Amq8fm+ guD8eMawZUcIYN4L8ottvokjcLzQtRxTIc6G/IaYcQ28Enew/DR0Bnl3BsYV/QQE2J 0hdFqwJZNLy8RKx4IJqyGPpAU9wV/3120sksETknuNAP8zPqt4N860F/uqakh7J7BY rZ3SThlETe8nJioehN7u2DR+e6u0H+HcigoSFiL10pPiH6mkacMEP5q/dTdZzfuopT MmIzUUMf8ZnIOiPnpYj5WEcYVoDTKryLy7LcYVnKciV6QElSnOEpZ5Ft6bRTWLHX4N dKR41ADQjP4Gw== Message-ID: <9da1d287-c101-4af0-8371-888e78b3defe@kernel.org> Date: Tue, 27 Oct 2026 21:16:20 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv7 13/18] mm: Drop fake head checks To: Kiryl Shutsemau , Muchun Song Cc: Peter Zijlstra , Andrew Morton , Matthew Wilcox , Usama Arif , Frank van der Linden , Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, Dave Hansen , Andy Lutomirski References: <20261027110028.GH2668564@noisy.programming.kicks-ass.net> <070DDE5C-2183-4A8B-AC2D-891CAE15E581@linux.dev> <4A32F5E6-977D-4720-8723-B19AFBC08FCF@linux.dev> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 73F4C180004 X-Stat-Signature: ygo8uh3c5ngost1sfr7aydt8gr4udia3 X-Rspamd-Server: rspam06 X-Spam-Status: No, score=-7.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Rspam-User: X-HE-Tag: 1793132190-568686 X-HE-Meta: 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 3pfr7CjY C3v3HqVce88Qs0uMfJ8iidxWEIyxuSwEXO/9LCh/nLkPN6O0RL1YoDx6/jj9qQgPQcdJf0c7mlaLdXcYqio2jQRVqATPv5aQ+d8jnU6Joqg1D48EAxohchW7wNyN9meb2xAWBX3/QFWQfRU2h8wXAFzu11hMhBdA1YFvSqhBLU+fVBjXa6wxdqH5a/T8w9utiI4utz43o9krTNlPYN5yKuzTXyzPNLiUjXKGsbbRR1y3vOoKX+BJ2zjG9lzI7XO9bxWQB Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/27/26 18:51, Kiryl Shutsemau wrote: > On Tue, Oct 27, 2026 at 10:03:54PM +0800, Muchun Song wrote: >> Therefore, I am kind of leaning towards removing the RO protection >> and restoring RW permissions to solve the race. > > Okay, what about this: I'd be fine with that. Best to send it out officially such that we get more feedback from other folks. -- Cheers, David