Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 25 Sep 2018 17:39:21 +0100
From:   Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To:     "Theodore Y. Ts'o" <tytso@mit.edu>
Cc:     Jeff Layton <jlayton@redhat.com>,
        =?UTF-8?B?54Sm5pmT5Yas?= <milestonejxd@gmail.com>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        Rogier Wolff <R.E.Wolff@BitWizard.nl>
Subject: Re: POSIX violation by writeback error
Message-ID: <20180925173921.3b267bb3@alans-desktop>
In-Reply-To: <20180925154627.GC2933@thunk.org>
References: <CAJDTihx2yaR-_-9Ks1PoFcrKNZgUOoLdN-wRTTMV76Jg_dCLrw@mail.gmail.com>
        <486f6105fd4076c1af67dae7fdfe6826019f7ff4.camel@redhat.com>
        <20180925003044.239531c7@alans-desktop>
        <0662a4c5d2e164d651a6a116d06da380f317100f.camel@redhat.com>
        <20180925154627.GC2933@thunk.org>
Organization: Intel Corporation
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

> Unlike O_TMPFILE, this would require file system changes to support,
> so maybe it's not worth having something which automatically cleans up
> files that were in the middle of being written at the time of a system
> crash.

Would it. If you open a file unlink it and write to it and then have a
linkf(fd, path); your underlying fs behaviour isn't really changed it's
just you are allowed to name a file late ?

Alan