From: Josef Bacik <josef@redhat.com>
Subject: Re: ext2/3/4: punch support?
Date: Mon, 28 Feb 2011 08:11:18 -0500
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To: Dave Young <hidave.darkstar@gmail.com>
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On Mon, Feb 28, 2011 at 03:03:40PM +0800, Dave Young wrote:
> Hi, josef and ext guys
> 
> Do you have any plan with ext4 hole punching support? And the
> fallocate for ext2/3?
> 
> What's the obstacle to work on this? could someone tell the status of
> this issue?

There is no obstacle, just nobody has bothered to do it.  If you want to do it
go for it.  Thanks,

Josef