linux-ext4 - Re: [PATCH] xfstests: add another fallocate test to 214

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Date:	Wed, 6 Jan 2010 11:49:44 -0500
From:	Christoph Hellwig <hch@...radead.org>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	xfs mailing list <xfs@....sgi.com>,
	ext4 development <linux-ext4@...r.kernel.org>,
	Theodore Tso <tytso@....edu>
Subject: Re: [PATCH] xfstests: add another fallocate test to 214

On Mon, Jan 04, 2010 at 05:18:09PM -0600, Eric Sandeen wrote:
> ext4 had a regression where it double-accounted used blocks
> if you fallocated on top of delalloc blocks.  Ted sent a
> c program to exploit it (see "fsstress-induced corruption reproduced"
> on linux-ext4 on 12/31/2009) and it's trivial to do the same thing
> within the xfstests framework using xfs_io.
> 
> This also changes the handcrafted xfs_io tests to use the
> _require_xfs_io_falloc helper, not sure how that got missed.

Looks good,


Reviewed-by: Christoph Hellwig <hch@....de>

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