linux-ext4 - Re: [PATCH v2] ext4: Deprecate data=journal mount option

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Message-ID: <20110814020617.GB3524@thunk.org>
Date:	Sat, 13 Aug 2011 22:06:17 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Lukas Czerner <lczerner@...hat.com>,
	Curt Wohlgemuth <curtw@...gle.com>,
	Ric Wheeler <rwheeler@...hat.com>,
	Andreas Dilger <adilger@...ger.ca>,
	linux-ext4 List <linux-ext4@...r.kernel.org>,
	Jan Kara <jack@...e.cz>, Eric Sandeen <sandeen@...hat.com>
Subject: Re: [PATCH v2] ext4: Deprecate data=journal mount option

On Fri, Aug 12, 2011 at 04:57:19PM -0400, Christoph Hellwig wrote:
> > and differences in error code returns for
> > xattrs) and #79 (a failure in the append-only handling which I don't
> > completely understand yet).
> 
> This was discussed on fsdevel lately.  All filesystem but xfs inherit
> the append only bit from directories to files created inside them.
> This not only is not very useful behaviour, but also exposes a bug
> in the vfs that allows to create these new files, but fail the open
> unless using O_APPEND which is against the posix create semantics.

I agree that disabling inheritance of the APPEND_FL flag makes sense.
I propose we do this for ext2/3/4 and any other file systems which is
currently following the ext2/3/4 behavior.

Any objections?

						- Ted
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