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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-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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) 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