linux-ext4 - Re: [PATCH V2] Add flag to files with blocks intentionally past EOF

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Message-ID: <20100224162621.GD5166@thunk.org>
Date:	Wed, 24 Feb 2010 11:26:21 -0500
From:	tytso@....edu
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>,
	Jiaying Zhang <jiayingz@...gle.com>
Subject: Re: [PATCH V2] Add flag to files with blocks intentionally past EOF

On Thu, Jan 21, 2010 at 12:00:30PM -0600, Eric Sandeen wrote:
> From: Jiaying Zhang <jiayingz@...gle.com>
> 
> fallocate() may potentially instantiate blocks past EOF, depending
> on the flags used when it is called.
> 
> e2fsck currently has a test for blocks past i_size, and it
> sometimes trips up - noticeably on xfstests 013 which runs fsstress.
> 
> This patch from Jiayang does fix it up - it (along with
> e2fsprogs updates and other patches recently from Aneesh) has
> survived many fsstress runs in a row.
> 
> 
> (Eric Sandeen: removed ioctl interface and minor cleanups)
> 
> Signed-off-by: Eric Sandeen <sandeen@...hat.com>

Applied to the maint branch, although I added back the ability to
truncate the fallocated blocks via chattr.

						- Ted
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