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Date:   Wed, 29 Jun 2022 08:45:02 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Logan Gunthorpe <logang@deltatee.com>
Cc:     linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
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Subject: Re: [PATCH v7 14/21] mm: introduce FOLL_PCI_P2PDMA to gate getting
 PCI P2PDMA pages
Message-ID: <20220629064502.GA17576@lst.de>
References: <20220615161233.17527-1-logang@deltatee.com> <20220615161233.17527-15-logang@deltatee.com>
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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 <hch@lst.de>