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From:   David Howells <dhowells@redhat.com>
In-Reply-To: <Y8/ZekMEAfi8VeFl@nvidia.com>
References: <Y8/ZekMEAfi8VeFl@nvidia.com> <20230123173007.325544-1-dhowells@redhat.com> <20230123173007.325544-11-dhowells@redhat.com> <31f7d71d-0eb9-2250-78c0-2e8f31023c66@nvidia.com> <84721e8d-d40e-617c-b75e-ead51c3e1edf@nvidia.com>
To:     Jason Gunthorpe <jgg@nvidia.com>
Cc:     dhowells@redhat.com, John Hubbard <jhubbard@nvidia.com>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Christoph Hellwig <hch@infradead.org>,
        Matthew Wilcox <willy@infradead.org>,
        Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
        Jeff Layton <jlayton@kernel.org>,
        Logan Gunthorpe <logang@deltatee.com>,
        linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
        linux-mm@kvack.org
Subject: Re: [PATCH v8 10/10] mm: Renumber FOLL_PIN and FOLL_GET down
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Date:   Tue, 24 Jan 2023 13:46:23 +0000
Message-ID: <852117.1674567983@warthog.procyon.org.uk>
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Jason Gunthorpe <jgg@nvidia.com> wrote:

> Yeah, I already wrote a similar patch, using the 1<< notation, 
> splitting the internal/external, and rebasing on the move to
> mm_types.. I can certainly drop that patch if we'd rather do this.

Note that I've already given Andrew a patch to move FOLL_* to mm_types.h.

I'm happy to go with your patch on top of that if you can just renumber
FOLL_PIN to 0 and FOLL_GET to 1.

David