linux-kernel - [PATCH 0/7] mm: better GUP pin lru_add_drain

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <a28b44f7-cdb4-8b81-4982-758ae774fbf7@google.com>
Date: Sun, 31 Aug 2025 01:57:50 -0700 (PDT)
From: Hugh Dickins <hughd@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
cc: David Hildenbrand <david@...hat.com>, Shivank Garg <shivankg@....com>, 
    Matthew Wilcox <willy@...radead.org>, 
    Christoph Hellwig <hch@...radead.org>, Keir Fraser <keirf@...gle.com>, 
    Jason Gunthorpe <jgg@...pe.ca>, John Hubbard <jhubbard@...dia.com>, 
    Frederick Mayle <fmayle@...gle.com>, Peter Xu <peterx@...hat.com>, 
    "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>, 
    Johannes Weiner <hannes@...xchg.org>, Vlastimil Babka <vbabka@...e.cz>, 
    Alexander Krabler <Alexander.Krabler@...a.com>, 
    Ge Yang <yangge1116@....com>, Li Zhe <lizhe.67@...edance.com>, 
    Chris Li <chrisl@...nel.org>, Yu Zhao <yuzhao@...gle.com>, 
    Axel Rasmussen <axelrasmussen@...gle.com>, 
    Yuanchu Xie <yuanchu@...gle.com>, Wei Xu <weixugc@...gle.com>, 
    Konstantin Khlebnikov <koct9i@...il.com>, linux-kernel@...r.kernel.org, 
    linux-mm@...ck.org
Subject: [PATCH 0/7] mm: better GUP pin lru_add_drain_all()

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