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From:   David Howells <dhowells@redhat.com>
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To:     Omar Sandoval <osandov@osandov.com>
Cc:     dhowells@redhat.com, "Colin Walters" <walters@verbum.org>,
        "Al Viro" <viro@zeniv.linux.org.uk>, linux-fsdevel@vger.kernel.org,
        "Christoph Hellwig" <hch@lst.de>, "Theodore Ts'o" <tytso@mit.edu>,
        adilger.kernel@dilger.ca,
        "Darrick J. Wong" <darrick.wong@oracle.com>,
        "Chris Mason" <clm@fb.com>, josef@toxicpanda.com, dsterba@suse.com,
        linux-ext4 <linux-ext4@vger.kernel.org>,
        xfs <linux-xfs@vger.kernel.org>, linux-btrfs@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: Making linkat() able to overwrite the target
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Date:   Fri, 17 Jan 2020 11:42:55 +0000
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Hi Omar,

Do you still have your AT_REPLACE patches?  You said that you'd post a v4
series, though I don't see it.  I could make use of such a feature in
cachefiles inside the kernel.  For my original question, see:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log=
/?h=3Dfscache-iter

And do you have ext4 support for it?

Colin Walters <walters@verbum.org> wrote:

> On Tue, Jan 14, 2020, at 1:06 PM, David Howells wrote:
> =

> > Yes, I suggested AT_LINK_REPLACE as said magical flag.
> =

> This came up before right?
> =

> https://lore.kernel.org/linux-fsdevel/cover.1524549513.git.osandov@fb.co=
m/

David