From: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
To: Kyle Moffett <mrmacman_g4@mac.com>
Cc: Markus Klotzbuecher <mk@creamnet.de>, linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] mini_fo-0.6.0 overlay file system
Date: Fri, 13 May 2005 14:24:51 +0200 [thread overview]
Message-ID: <20050513122451.GD9255@wohnheim.fh-wedel.de> (raw)
In-Reply-To: <7E4FD3AB-54F6-43D5-9340-ECEEA2E55C0B@mac.com>
On Fri, 13 May 2005 07:26:14 -0400, Kyle Moffett wrote:
>
> >It solves the biggest concern I had left for union mount. Actually
> >implementing it, though, depends on quite a bit of infrastructure
> >that just
> >doesn't exist yet. Still, a very interesting idea.
>
> For ext2/ext3, the sparse-file-support _does_ exist, so the only
> major parts
> that need to be added are:
> o An extra ext2/ext3 flag that indicates nonresidence (For both
> sparse
> files, normal files, and directories).
> o VFS-level support for the union operation with hooks to let each
> filesystem do something special.
That and replacing the page cache by something different. Page cache
is referencing pages by inode,offset pairs. Having a potentially
infinite amount of inodes to look at, in order, may require a tiny bit
of patching. ;)
Jörn
--
Linux [...] existed just for discussion between people who wanted
to show off how geeky they were.
-- Rob Enderle
next prev parent reply other threads:[~2005-05-13 12:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-09 18:40 Markus Klotzbuecher
2005-05-10 6:07 ` Eric Lammerts
2005-05-10 15:29 ` Lee Revell
2005-05-10 15:42 ` Arjan van de Ven
2005-05-10 17:01 ` Markus Klotzbuecher
2005-05-12 12:18 ` Jörn Engel
2005-05-12 16:44 ` Markus Klotzbuecher
2005-05-13 3:18 ` Kyle Moffett
2005-05-13 8:01 ` Jörn Engel
2005-05-13 11:26 ` Kyle Moffett
2005-05-13 12:24 ` Jörn Engel [this message]
2005-05-13 20:57 ` Kyle Moffett
2005-05-13 12:49 ` Jan Blunck
2005-05-13 20:18 ` Markus Klotzbuecher
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