linux-kernel - Re: [PATCH v6 06/34] iov_iter: Use the direction in the iterator functions

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Message-ID: <Y8jY6pCN73rwfcXq@infradead.org>
Date:   Wed, 18 Jan 2023 21:45:14 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Christoph Hellwig <hch@...radead.org>,
        David Howells <dhowells@...hat.com>,
        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 v6 06/34] iov_iter: Use the direction in the iterator
 functions

On Wed, Jan 18, 2023 at 10:28:28PM +0000, Al Viro wrote:
> On Mon, Jan 16, 2023 at 11:58:16PM -0800, Christoph Hellwig wrote:
> > On Mon, Jan 16, 2023 at 11:08:44PM +0000, David Howells wrote:
> > > Use the direction in the iterator functions rather than READ/WRITE.
> > 
> > I don't think we need the direction at all as nothing uses it any more.
> 
> ... except for checks in copy_from_iter() et.al.

Debug checks, yes.