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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-e98ac57b5fasm973601276.24.2025.08.31.01.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 31 Aug 2025 01:58:05 -0700 (PDT) Date: Sun, 31 Aug 2025 01:57:50 -0700 (PDT) From: Hugh Dickins To: Andrew Morton cc: David Hildenbrand , Shivank Garg , Matthew Wilcox , Christoph Hellwig , Keir Fraser , Jason Gunthorpe , John Hubbard , Frederick Mayle , Peter Xu , "Aneesh Kumar K.V" , Johannes Weiner , Vlastimil Babka , Alexander Krabler , Ge Yang , Li Zhe , Chris Li , Yu Zhao , Axel Rasmussen , Yuanchu Xie , Wei Xu , Konstantin Khlebnikov , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 0/7] mm: better GUP pin lru_add_drain_all() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Series of lru_add_drain_all()-related patches, arising from recent mm/gup migration report from Will Deacon. Based on 6.17-rc3 but apply to latest mm.git. I suggest all but 7/7 be hotfixes going to 6.17 and stable, but you might not be persuaded by "counter the increase" ones. 1/7 mm: fix folio_expected_ref_count() when PG_private_2 2/7 mm/gup: check ref_count instead of lru before migration 3/7 mm/gup: local lru_add_drain() to avoid lru_add_drain_all() 4/7 mm: Revert "mm/gup: clear the LRU flag of a page before 5/7 mm: Revert "mm: vmscan.c: fix OOM on swap stress test" 6/7 mm: folio_may_be_cached() unless folio_test_large() 7/7 mm: lru_add_drain_all() do local lru_add_drain() first include/linux/mm.h | 4 ++-- include/linux/swap.h | 10 ++++++++++ mm/gup.c | 6 +++++- mm/mlock.c | 6 +++--- mm/swap.c | 53 ++++++++++++++++++++++++++++------------------------ mm/vmscan.c | 2 +- 6 files changed, 50 insertions(+), 31 deletions(-) Thanks, Hugh