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(p200300cbc73c81000600a1e5da94a13a.dip0.t-ipconnect.de. [2003:cb:c73c:8100:600:a1e5:da94:a13a]) by smtp.gmail.com with ESMTPSA id n10-20020a05600c4f8a00b0040fd1629443sm19324148wmq.18.2024.03.05.14.09.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 05 Mar 2024 14:09:18 -0800 (PST) Message-ID: <0910e8f0-5490-4d08-ac64-da4077a1e703@redhat.com> Date: Tue, 5 Mar 2024 23:09:17 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH STABLE v6.1.y] mm/migrate: set swap entry values of THP tail pages properly. To: Greg KH , Zi Yan Cc: stable@vger.kernel.org, linux-mm@kvack.org, Charan Teja Kalla , "Matthew Wilcox (Oracle)" , Andrew Morton , Huang Ying , Naoya Horiguchi References: <20240305161313.90954-1-zi.yan@sent.com> <2024030506-quotable-kerosene-6820@gregkh> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <2024030506-quotable-kerosene-6820@gregkh> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: B22D0A0021 X-Rspam-User: X-Stat-Signature: ozmtzoocowjrgiypzjon6ba8tjmqzqw4 X-Rspamd-Server: rspam01 X-HE-Tag: 1709676562-839781 X-HE-Meta: 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 vepGuYnc HAJpocMOF2xzvDdf8EPSoE4EFgqTZLClBgJ86b/63XOdAGZRtc5ETrh7XseMIPszi2+OMHOmm70m/mTCHEfAd53QKtkEvpi6FCrIQQEbYFEGuvNeM4DpB59jVgFDqCT2TVbDWxUpIVK34pJoeCRuEg7ADqoEnhHX++7q/ 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: List-Subscribe: List-Unsubscribe: On 05.03.24 23:04, Greg KH wrote: > On Tue, Mar 05, 2024 at 11:13:13AM -0500, Zi Yan wrote: >> From: Zi Yan >> >> The tail pages in a THP can have swap entry information stored in their >> private field. When migrating to a new page, all tail pages of the new >> page need to update ->private to avoid future data corruption. >> >> Signed-off-by: Zi Yan >> --- >> mm/migrate.c | 6 +++++- >> 1 file changed, 5 insertions(+), 1 deletion(-) > > What is the git commit id of this change in Linus's tree? Unfortunately, we had to do stable-only versions, because the backport of the "accidental" fix that removes the per-subpage "private" information would be non-trivial, especially for pre-folio-converison times. The accidental fix is 07e09c483cbef2a252f75d95670755a0607288f5 -- Cheers, David / dhildenb