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linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, fuse-devel@lists.linux.dev References: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-0-4583d8a23bca@kernel.org> <20260917-b4-mmap-prepare-vma-flag-sanify-v3-31-4583d8a23bca@kernel.org> <9bbdf4e8-6984-4477-a183-f0b236047381@kernel.org> <3557015d-23dd-41ef-9832-78b58587f3f4@kernel.org> Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 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f2xZiS/tseyrQYXG+Krtq2aCB5nDhysjrRa0U9LapEEAFsBnWidRFVHl7jeHY1LlQ8luB44hLQk/wgsc4a2LDbkk8YkXfn0mQB5gHqtdRLA1HFt/a44dApsiNz8eKG6VDQogLU5h2IwK3iTf0Fl5eA7vxL5n9sQh2nJcz3uXsN0TB9t/9rNaZYeRE2MQGo65kVhQmNzbfrx1XPYPpMqdisYI8DtOPqzJqhGg5qtD0bZgFpu8Dh/Dz487q5In48p9zuW4KmsFULbUbrsC5tYvjkngqfvk/gmNMAOlA1PVt7MnYdHJEkzSWeGJYedwhi+iiD+r9kDbawCwCC4hqDAfFLb4TW1PgOtVU= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/2/26 09:02, David Hildenbrand (Arm) wrote: > On 10/2/26 08:59, David Hildenbrand (Arm) wrote: >> On 9/17/26 18:22, Lorenzo Stoakes (ARM) wrote: >>> Introduce vma[_flags]_is_persistent() for the purposes of identifying >>> mappings that are persistent in the sense that bytes to the mapping stay >>> there, and bytes read from the mapping are the same unless changed by >>> actions taken by userland. >> >> That's extremely confusing, sorry. We have to find a better name for that. >> >> Is this really all about user pages (pagecache, anon) that we would find through >> the rmap? >> > > It's also about droppable mappings AFAIKs. How many more users will we have for > that function? > > If it's "no others" then please don't add a helper function with misleading > names for it and just keep the special "dumpable" check in the new form in > madvise_vma_behavior(). Talking to myself ... the more usage I see of the vma_is_persistent() the more I think this shouldn't be a helper at all. Especially not one with such a confusing name :P -- Cheers, David