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SubjectRe: [PATCH v7 14/21] mm: introduce FOLL_PCI_P2PDMA to gate getting PCI P2PDMA pages
On Wed, Jun 15, 2022 at 10:12:26AM -0600, Logan Gunthorpe wrote:
> GUP Callers that expect PCI P2PDMA pages can now set FOLL_PCI_P2PDMA to
> allow obtaining P2PDMA pages. If GUP is called without the flag and a
> P2PDMA page is found, it will return an error.
> FOLL_PCI_P2PDMA cannot be set if FOLL_LONGTERM is set.

Looks good:

Reviewed-by: Christoph Hellwig <>

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