linux-kernel - Re: [PATCH v8 10/10] mm: Renumber FOLL_PIN and FOLL

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Message-ID: <852117.1674567983@warthog.procyon.org.uk>
Date:   Tue, 24 Jan 2023 13:46:23 +0000
From:   David Howells <dhowells@...hat.com>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     dhowells@...hat.com, John Hubbard <jhubbard@...dia.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...nel.org>,
        Logan Gunthorpe <logang@...tatee.com>,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
        linux-mm@...ck.org
Subject: Re: [PATCH v8 10/10] mm: Renumber FOLL_PIN and FOLL_GET down

Jason Gunthorpe <jgg@...dia.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