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Sat, 14 Nov 2026 11:56:46 -0800 (PST) Received: from [172.22.0.2] ([64.16.22.130]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b197d27d26sm14613174a91.13.2026.11.14.11.56.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2026 11:56:45 -0800 (PST) Date: Sat, 14 Nov 2026 11:56:43 -0800 From: Chris Down To: "Lorenzo Stoakes (ARM)" Cc: David Hildenbrand , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , David Rientjes , Shakeel Butt , Andrew Morton , Jann Horn , Pedro Falcato , "Matthew Wilcox (Oracle)" , Jan Kara , Nhat Pham , Johannes Weiner , Zi Yan , Matthew Brost , Joshua Hahn , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Usama Arif , Kairui Song , Balbir Singh , =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Kiryl Shutsemau , Yu-cheng Yu , Dave Hansen , Dennis Zhou , Tejun Heo , Christoph Lameter , Peng Fan , Josef Bacik , Chris Mason , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Borislav Petkov (AMD)" , Mark Brown , "Dennis Zhou (Facebook)" , Rick Edgecombe , Josef Bacik , stable@vger.kernel.org Subject: Re: [PATCH v2 04/13] mm/migrate_device: allocate THP deferred split heads In-Reply-To: <20261113-mason-migrate-et-al-fixes-v2-4-50a2ed382b61@kernel.org> References: <20261113-mason-migrate-et-al-fixes-v2-0-50a2ed382b61@kernel.org> <20261113-mason-migrate-et-al-fixes-v2-4-50a2ed382b61@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline Message-ID: <20261114115643.a6727abe20ff6cd1@chrisdown.name> User-Agent: Mutt/2.4.3 (cc9e3943) (2026-10-09) X-Spam-Status: No, score=-12.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Rspamd-Server: rspam09 X-Stat-Signature: kzps7kd8hooesmu14q4kepatgjbdg6nu X-Rspamd-Queue-Id: 69D2BA0002 X-Rspam-User: X-HE-Tag: 1794686207-550641 X-HE-Meta: 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 mw6PKFXg 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 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 Hi Lorenzo, Thanks! I've tested this by migrating into an empty PMD in a new memcg, faulting the THP back and partially unmapping it, and the warning from lock_list_lru_of_memcg() is gone. Reviewed-by: Chris Down Tested-by: Chris Down Chris