linux-kernel - Re: [RFC 12/26] ext2 white-out support

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Message-ID: <Pine.LNX.4.64.0708011952280.26668@fbirervta.pbzchgretzou.qr>
Date:	Wed, 1 Aug 2007 19:58:49 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Josef Sipek <jsipek@....cs.sunysb.edu>
cc:	Jan Blunck <jblunck@...e.de>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>
Subject: Re: [RFC 12/26] ext2 white-out support


On Jul 31 2007 12:36, Josef Sipek wrote:
>[2] http://www.filesystems.org/unionfs-odf.txt

>Instead, the new ODF code stores whiteouts as hardlinks to a special
>(regular) zero-length file in odf (/odf/whiteout), and it stores opaqueness
>information for directories in the inode GID bits in an ODF file system
>(e.g., ext2, XFS, etc.) on the local machine.  This avoids the name-space
>pollution and avoids races with network file systems, while minimizing inode
>consummation in /odf.

Inode GID bits - are you reducing my 32 bits of gid_t to 31 bits?
That does not work out either.



	Jan
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