linux-kernel - Re: [PATCH] iov_iter: Declare new iterator direction symbols

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Message-ID: <CAHk-=wjKwjX-hNV81sDy8J3vi9_x5m7iCEOFTR1ijiPGfQdz9w@mail.gmail.com>
Date:   Fri, 4 Nov 2022 11:49:28 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>, willy@...radead.org,
        dchinner@...hat.com, Steve French <smfrench@...il.com>,
        Shyam Prasad N <nspmangalore@...il.com>,
        Rohith Surabattula <rohiths.msft@...il.com>,
        Jeff Layton <jlayton@...nel.org>,
        Ira Weiny <ira.weiny@...el.com>, linux-cifs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iov_iter: Declare new iterator direction symbols

On Fri, Nov 4, 2022 at 10:47 AM David Howells <dhowells@...hat.com> wrote:
>
> If we're going to go with Al's changes to switch to using ITER_SOURCE and
> ITER_DEST instead of READ/WRITE, can we put just the new symbols into mainline
> now, even if we leave the rest for the next merge window?

No, I really don't want to have mixed-used stuff in the kernel.

Continue to use the old names until/if the conversion happens, at
which point it's the conversion code that does it.

No "one branch uses new names, another uses old names" mess.

               Linus