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 IZqal3WB 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, 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 4/10/2024 3:21 AM, Oscar Salvador wrote: > On Mon, Apr 08, 2024 at 05:34:29PM -0700, Jane Chu wrote: >> At this stage,  'p' is not expected to be a large page since a _refcount has >> been taken, right?  So is it reasonable to replace the "if (retry)" block >> with a VM_BUG_ON warning?  otherwise, if 'p' became part of a different >> large folio,  how to recover from here ? > We might have split the THP (if it was part of), but AFAICS > nothing stops the kernel to coallesce this page again into a new THP via e.g: > madvise(MADV_HUGEPAGE) ? Good point, thanks! -jane >