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Re: [PATCH 3/3] Add timeout feature

To: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 3/3] Add timeout feature
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Fri, 22 Aug 2008 14:16:56 -0400
Cc: Takashi Sato <t-sato@xxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, hch@xxxxxxxxxxxxx, axboe@xxxxxxxxx, mtk.manpages@xxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Oleg Nesterov <oleg@xxxxxxxxxx>
In-reply-to: <20080821132006.9949101c.akpm@xxxxxxxxxxxxxxxxxxxx>
References: <20080818212856t-sato@xxxxxxxxxxxxxxx> <20080821132006.9949101c.akpm@xxxxxxxxxxxxxxxxxxxx>
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User-agent: Mutt/1.5.18 (2008-05-17)
On Thu, Aug 21, 2008 at 01:20:06PM -0700, Andrew Morton wrote:
> I don't think the changelogs actually explained why this feature is
> being added?
> Which userspace tools are expected to send these ioctls?  Something in
> util-linux?  dm-utils?  Are patches to those packages planned?

Currently the only surspace using freeze and thaw is xfs_freeze from
xfsprogs, which would work for various other filesystems that implement
->write_super_lockfs now instead of just XFS with patch 1.

The freeze stuff in this third patch isn't and won't be used by
xfs_freeze and doesn't make all that much sense (and we already had a
lot of previous discussion on this..)

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