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U2FsdGVkX19j42Hzg1XogB56r47grRlhLNBl6qZxmtlKabQBPbMpB7nH0cugjsmgMNQzsUbfzOwZdMvI+786NKS442BN04xAZsdobl842AjHGiY93fMK/UWOa34sU2lAlfi+BvZUl9tC5kcO4S/oZlXcVlkupDZ0rjm4O/Gdv/LobjOvWUt+Xasc0c7TlYq2pk6JFHbH2dmnHKyKxzzeVKvhVUlpvCbTkrHAVh4g9ORNTVGNyPypvM+WMRyI2Dgi24O8xjyMVhfoDvmbtxuEX85Vy0vOs9Dxx0zWnoLBnXEB3FmSNy/PSDXnLUZWan+e7CJokVQhhFgXbXC3K+LlWEziRfqzWj1XkGbM+Tp54WpReG9F5cW503LWOR3UY27rp2aC9wx//9crSbVBIP0Dn37G/WM1R9Si4VDyR87P4N+3qfLdQ1UbXJKIFMWTakOo5ZooiwqA8d0iUdSOsNwHZTMLayMapWpZjQluPJOsFog+CmTYdxY6gpK0FxES8IrpQZSwQ8DKE20fLIHpSstWqbGDEdZdF7/cZ7Uczrt92z560dCX605U/WXfUWwZxZ7enfBiFTUm4fRrAQx2G5R20H/Pf+SolQc551jRqzgnv0UNovvbseCfNBJvc6GHOZE8/E4VDIuxvQvKylonLFVDQDK5eMZA7N4kmpiiDoYD5HdV15QS7vjzgdl1zJ9XgsvRa5Lc1umU4edOTSS7Numn70Q2WynyG4+0MJNH7bEuA3yTS34Ez6y58k98jPMI47mEeeLOoGiBzBiYS3jjxDZlgQVxFX9pP3sbxgLQFOIqmhXV4lRu1464FgkbCrXNwap6GjmZyuLWh0Nf8JpG6br5Ngmqra89svR24t1DM6OL7WTXOH2sRJ9f6FW/9j5rcLYbA2U53xU2OjHQOCz1u3pjtfdr9hWswsAexDPyokMZT1rc020dQukZfQn9N5A6j1r/57lEpwKdc87BTONxstV PVMOtsdw 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 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 8/5/25 20:57, David Hildenbrand wrote: > On 05.08.25 06:22, Balbir Singh wrote: >> On 7/30/25 19:50, David Hildenbrand wrote: >> >>> I think I asked that already but maybe missed the reply: Should these folios ever be added to the deferred split queue and is there any value in splitting them under memory pressure in the shrinker? >>> >>> My gut feeling is "No", because the buddy cannot make use of these folios, but maybe there is an interesting case where we want that behavior? >>> >> >> I realized I did not answer this >> >> deferred_split() is the default action when partial unmaps take place. Anything that does >> folio_rmap_remove_ptes can cause the folio to be deferred split if it gets partially >> unmapped. > > Right, but it's easy to exclude zone-device folios here. So the real question is: do you want to deal with deferred splits or not? > > If not, then just disable it right from the start. > I agree, I was trying to avoid special casing device private folios unless needed to the extent possible Balbir