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

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Message-ID: <831747.1674567621@warthog.procyon.org.uk>
Date:   Tue, 24 Jan 2023 13:40:21 +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:

> Though, I'm not so keen on using FOLL_ internal flags inside the block
> layer.. Can you stick with the BIO versions of these?

It's used in a new iov_iter function and will be used in a bunch of
filesystems including network filesystems.  I'm also looking at using it in
the sk_buff handling also.

David