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owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Feb 04, 2026 at 07:56:03PM -0500, Zi Yan wrote: > When !CONFIG_TRANSPARENT_HUGEPAGE, a non-folio compound page can appear in > a userspace mapping via either vm_insert_*() functions or > vm_operatios_struct->fault(). They are not folios, thus should not be > considered for folio operations like split. Change memory_failure() and > soft_offline_page() to reject these non-folio compound pages as > EOPNOTSUPP. > > Add PageNonFolioCompound() helper function. This function is functionally > equivalent to folio_test_large() && !folio_test_large_rmappable(), but it > is supposed to be used on struct page. So open code it instead. > > Fixes: 689b8986776c ("mm/memory-failure: improve large block size folio handling") > Reported-by: 是参差 > Closes: https://lore.kernel.org/all/PS1PPF7E1D7501F1E4F4441E7ECD056DEADAB98A@PS1PPF7E1D7501F.apcprd02.prod.outlook.com/ > Signed-off-by: Zi Yan > --- Looks good to me, Acked-by: Harry Yoo -- Cheers, Harry / Hyeonggon