From: Christoph Hellwig <hch@infradead.org>
To: Erez Zadok <ezk@cs.sunysb.edu>
Cc: Andrew Morton <akpm@osdl.org>,
Shaya Potter <spotter@cs.columbia.edu>,
Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
hch@infradead.org, viro@ftp.linux.org.uk, torvalds@osdl.org,
mhalcrow@us.ibm.com, David Quigley <dquigley@cs.sunysb.edu>
Subject: Re: [PATCH 01/24] Unionfs: Documentation
Date: Tue, 9 Jan 2007 09:53:45 +0000 [thread overview]
Message-ID: <20070109095345.GB12406@infradead.org> (raw)
In-Reply-To: <200701090003.l0903Z2O017720@agora.fsl.cs.sunysb.edu>
On Mon, Jan 08, 2007 at 07:03:35PM -0500, Erez Zadok wrote:
> However, I must caution that a file system like ecryptfs is very different
> from Unionfs, the latter being a fan-out file system---and both have very
> different goals. The common code between the two file systems, at this
> stage, is not much (and we've already extracted some of it into the "stackfs
> layer").
I think that's an very important point. We have a chance to get that
non-fanout filesystems right quite easily - something I wished that would
have been done before the ecryptfs merge - while getting fan-out stackable
filesystems is a really hard task. In addition to that I know exactly
one fan-out stackable filesystem that is posisbly useful, which is unionfs.
Because of that I'm much more inclined to add VFS asistance for this
particular problem (unioning) instead of adding complex infrastructure
to solve a general problem that people don't benefit from.
next prev parent reply other threads:[~2007-01-09 9:53 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-08 4:12 [PATCH 00/24] Unionfs, try #4 Josef 'Jeff' Sipek
2007-01-08 4:12 ` [PATCH 01/24] Unionfs: Documentation Josef 'Jeff' Sipek
2007-01-08 19:18 ` Andrew Morton
2007-01-08 19:43 ` Shaya Potter
2007-01-08 20:24 ` Jan Engelhardt
2007-01-08 21:32 ` Shaya Potter
2007-01-08 21:19 ` Andrew Morton
2007-01-08 21:30 ` Shaya Potter
2007-01-08 22:02 ` Andrew Morton
2007-01-08 22:21 ` Shaya Potter
2007-01-08 23:34 ` Jan Engelhardt
2007-01-08 23:37 ` Josef Sipek
2007-01-09 0:03 ` Erez Zadok
2007-01-09 9:53 ` Christoph Hellwig [this message]
2007-01-09 10:43 ` Josef Sipek
2007-01-09 10:47 ` Christoph Hellwig
2007-01-09 10:48 ` Christoph Hellwig
2007-01-09 17:28 ` Erez Zadok
2007-01-08 23:25 ` Josef Sipek
2007-01-09 9:49 ` Christoph Hellwig
2007-01-09 10:36 ` Josef Sipek
2007-01-08 20:51 ` Erez Zadok
2007-01-08 21:53 ` Jan Engelhardt
2007-01-08 23:00 ` Michael Halcrow
2007-01-08 23:45 ` Josef Sipek
2007-01-09 0:19 ` Giuseppe Bilotta
2007-01-09 0:33 ` Josef Sipek
2007-01-09 1:26 ` Jan Engelhardt
2007-01-09 1:50 ` Shaya Potter
2007-01-09 12:26 ` Jan Kara
2007-01-09 16:39 ` Trond Myklebust
2007-01-09 17:04 ` Jan Kara
2007-01-09 17:07 ` Trond Myklebust
2007-01-09 17:34 ` Erez Zadok
2007-01-10 16:12 ` Jan Kara
2007-01-10 20:15 ` Erez Zadok
2007-01-10 20:24 ` Shaya Potter
2007-01-10 21:27 ` Jan Kara
2007-01-10 23:20 ` Josef Sipek
2007-01-10 23:29 ` Shaya Potter
2007-01-11 8:54 ` Jan Kara
2007-01-08 23:15 ` Josef Sipek
2007-01-09 12:15 ` Jan Kara
2007-01-09 16:30 ` Trond Myklebust
2007-01-09 16:41 ` Shaya Potter
2007-01-09 17:03 ` Trond Myklebust
2007-01-09 17:11 ` Shaya Potter
2007-01-09 17:16 ` Erez Zadok
2007-01-09 17:16 ` Jan Kara
2007-01-09 22:02 ` Jan Engelhardt
2007-01-11 14:29 ` unionfs unusable on multiuser systems (was Re: [PATCH 01/24] Unionfs: Documentation) Pavel Machek
2007-01-12 14:17 ` Shaya Potter
2007-01-08 4:12 ` [PATCH 02/24] lookup_one_len_nd - lookup_one_len with nameidata argument Josef 'Jeff' Sipek
2007-01-08 4:12 ` [PATCH 03/24] Unionfs: Branch management functionality Josef 'Jeff' Sipek
2007-01-08 4:12 ` [PATCH 04/24] Unionfs: Common file operations Josef 'Jeff' Sipek
2007-01-08 21:28 ` Andrew Morton
2007-01-08 4:12 ` [PATCH 05/24] Unionfs: Copyup Functionality Josef 'Jeff' Sipek
2007-01-08 21:29 ` Andrew Morton
2007-01-08 22:00 ` Shaya Potter
2007-01-08 4:12 ` [PATCH 06/24] Unionfs: Dentry operations Josef 'Jeff' Sipek
2007-01-08 21:29 ` Andrew Morton
2007-01-08 4:12 ` [PATCH 07/24] Unionfs: File operations Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 08/24] Unionfs: Directory file operations Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 09/24] Unionfs: Directory manipulation helper functions Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 10/24] Unionfs: Inode operations Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 11/24] Unionfs: Lookup helper functions Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 12/24] Unionfs: Main module functions Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 13/24] Unionfs: Readdir state Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 14/24] Unionfs: Rename Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 15/24] Unionfs: Privileged operations workqueue Josef 'Jeff' Sipek
2007-01-08 21:27 ` Andrew Morton
2007-01-08 4:13 ` [PATCH 16/24] Unionfs: Handling of stale inodes Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 17/24] Unionfs: Miscellaneous helper functions Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 18/24] Unionfs: Superblock operations Josef 'Jeff' Sipek
2007-01-08 21:29 ` Andrew Morton
2007-01-08 4:13 ` [PATCH 19/24] Unionfs: Helper macros/inlines Josef 'Jeff' Sipek
2007-01-08 21:28 ` Andrew Morton
2007-01-08 4:13 ` [PATCH 20/24] Unionfs: Internal include file Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 21/24] Unionfs: Include file Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 22/24] Unionfs: Unlink Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 23/24] Unionfs: Kconfig and Makefile Josef 'Jeff' Sipek
2007-01-08 4:13 ` [PATCH 24/24] Unionfs: Extended Attributes support Josef 'Jeff' Sipek
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