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Tue, 22 Aug 2023 12:07:52 -0700 (PDT) MIME-Version: 1.0 References: <4d31abf5-56c0-9f3d-d12f-c9317936691@google.com> <82d294-c9b0-d7b4-71c9-cfed3925c47b@google.com> In-Reply-To: <82d294-c9b0-d7b4-71c9-cfed3925c47b@google.com> From: Jann Horn Date: Tue, 22 Aug 2023 21:07:15 +0200 Message-ID: Subject: Re: [PATCH mm-unstable] mm/khugepaged: fix collapse_pte_mapped_thp() versus uffd To: Hugh Dickins Cc: Andrew Morton , Mike Kravetz , Mike Rapoport , "Kirill A. Shutemov" , Matthew Wilcox , David Hildenbrand , Suren Baghdasaryan , Qi Zheng , Yang Shi , Mel Gorman , Peter Xu , Peter Zijlstra , Will Deacon , Yu Zhao , Alistair Popple , Ralph Campbell , Ira Weiny , Steven Price , SeongJae Park , Lorenzo Stoakes , Huang Ying , Naoya Horiguchi , Christophe Leroy , Zack Rusin , Jason Gunthorpe , Axel Rasmussen , Anshuman Khandual , Pasha Tatashin , Miaohe Lin , Minchan Kim , Christoph Hellwig , Song Liu , Thomas Hellstrom , Russell King , "David S. Miller" , Michael Ellerman , "Aneesh Kumar K.V" , Heiko Carstens , Christian Borntraeger , Claudio Imbrenda , Alexander Gordeev , Gerald Schaefer , Vasily Gorbik , Vishal Moola , Vlastimil Babka , Zi Yan , "Zach O'Keefe" , Linux ARM , sparclinux@vger.kernel.org, linuxppc-dev , linux-s390 , kernel list , Linux-MM Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 6B01A1C0023 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: ab5y1s1jsi3o6oqaezmqk4pzjhotzdmm X-HE-Tag: 1692731274-231313 X-HE-Meta: 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 Ak/0OGl5 e32O92RDIeYy9rL8+qJrf+479+DBg/Wj1+oQXaBb/ljKlZXgEvzd63xlGfDJA1wZHMsC8IOGt7rE5xmUCnejssv4sPoEgJkI81Zyqx3iqolzgfh6YjoXCgBMMUhNgmW58k7ZY98YtH0WZtqSGdwbS/6G0BLBZjU19ahzQ0kDBhVvI45p2OESc+HrKmB48hTEj3XcyTsVl5fT/CelQu0wAWmmwaMkfLiQWcT4z6tXsmFfXTb6eDSpcKLkFUDzEt1hobPdu7yPNTSe+vvVl8AyGShs7xL4/eSoJMcicaxPwtqjzHt1h5IbNERVojvj1Ki6f2XDxN1BiTD+0rVqhX2dII+1xQf1ZthhMcLxjHZ91ldn9aJIAzkSFL7aFlQKx1OKKQ63ra2A+cahN/48= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Aug 22, 2023 at 8:54=E2=80=AFPM Hugh Dickins wro= te: > But rather than reworking it, please let's just go with v1 for now. Sounds good to me.