From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tao Ma <tm@tao.ma>
Subject: Re: XFS status update for January 2011
Date: Mon, 14 Feb 2011 10:17:26 +0800
Message-ID: <4D5890B6.2090105@tao.ma>
References: <20110213184219.GA22792@infradead.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: xfs@oss.sgi.com, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
To: Christoph Hellwig <hch@infradead.org>
Return-path: <linux-fsdevel-owner@vger.kernel.org>
Received: from cpoproxy2-pub.bluehost.com ([67.222.39.38]:36714 "HELO
	cpoproxy2-pub.bluehost.com" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with SMTP id S1751116Ab1BNCRa (ORCPT
	<rfc822;linux-fsdevel@vger.kernel.org>);
	Sun, 13 Feb 2011 21:17:30 -0500
In-Reply-To: <20110213184219.GA22792@infradead.org>
Sender: linux-fsdevel-owner@vger.kernel.org
List-ID: <linux-fsdevel.vger.kernel.org>

Hi Christoph,
On 02/14/2011 02:42 AM, Christoph Hellwig wrote:
> On the 4th of January we saw the release of Linux 2.6.37, which contains a
> large XFS update:
>
>      67 files changed, 1424 insertions(+), 1524 deletions(-)
>
> User visible changes are the new XFS_IOC_ZERO_RANGE ioctl which allows
> to convert already allocated space into unwritten extents that return
> zeros on a read,
>    
would you mind describing some scenario that this ioctl can be used. I am
just wondering whether ocfs2 can implement it as well.

Regards,
Tao