linux-ext4 - Re: [RFC][PATCH 0/12]ext4: online defrag (ver 0.95)

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Date:	Wed, 1 Oct 2008 14:45:45 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Andreas Dilger <adilger@....com>
Cc:	Akira Fujita <a-fujita@...jp.nec.com>, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [RFC][PATCH 0/12]ext4: online defrag (ver 0.95)

On Tue, Sep 30, 2008 at 05:40:54PM -0700, Andreas Dilger wrote:
> Instead of implementing an EXT4_IOC_FIEMAP_INO ioctl, what we had implemented
> is an EXT4_IOC_WRAPPER, which takes as arguments the inode number and the
> ioctl command + original ioctl data.  This allows inode ioctls to be called
> against the filesystem root for arbitrary inodes, and doesn't require new
> implementation for each ioctl:

Or just provide more generic open by handle functionality.  Shouldn't be
too much of a problem to do it in the VFS by reusing the exportfs code.

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