linux-kernel - Re: [PATCH v7 1/8] iov_iter: Define flags to qualify page extraction.

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Message-ID: <Y8viGuz5//4AP7tZ@infradead.org>
Date:   Sat, 21 Jan 2023 05:01:14 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     David Howells <dhowells@...hat.com>
Cc:     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
Subject: Re: [PATCH v7 1/8] iov_iter: Define flags to qualify page extraction.

On Fri, Jan 20, 2023 at 05:55:49PM +0000, David Howells wrote:
> For now only a flag to allow peer-to-peer DMA is allowed; but in future,
> additional flags will be provided to indicate the I/O direction.

Al still doesn't seem to be sold on the latter part, so maybe just
drop this sentence for now.