From: Shaya Potter <spotter@cs.columbia.edu>
To: bharata@linux.vnet.ibm.com
Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Jan Blunck <j.blunck@tu-harburg.de>
Subject: Re: [RFC][PATCH 10/14] In-kernel file copy between union mounted filesystems
Date: Fri, 18 May 2007 09:47:31 -0400 [thread overview]
Message-ID: <464DAE73.7000302@cs.columbia.edu> (raw)
In-Reply-To: <20070518111042.GC4869@in.ibm.com>
Bharata B Rao wrote:
>
> Not really. This is called during copyup of a file residing in a lower
> layer. And that is done only for regular files.
That is broken.
You should be able to change the permissions on a device node on a layer
that is RO.
so it would copy it up (1. mknod, 2. copy attributes) and then the
appropriate attribute notification change would be called.
next prev parent reply other threads:[~2007-05-18 14:31 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-14 9:37 [RFC][PATCH 0/14] VFS based Union Mount(v1) Bharata B Rao
2007-05-14 9:38 ` [RFC][PATCH 1/14] Add union mount documentation Bharata B Rao
2007-05-14 9:39 ` [RFC][PATCH 2/14] Add a new mount flag (MNT_UNION) for union mount Bharata B Rao
2007-05-14 20:38 ` Jan Engelhardt
2007-05-15 8:16 ` Bharata B Rao
2007-05-15 12:06 ` Eric Van Hensbergen
2007-05-15 12:53 ` Jan Blunck
2007-05-14 9:39 ` [RFC][PATCH 3/14] Add the whiteout file type Bharata B Rao
2007-05-14 20:39 ` Jan Engelhardt
2007-05-15 6:00 ` Jan Blunck
2007-05-14 9:40 ` [RFC][PATCH 4/14] Add config options for union mount Bharata B Rao
2007-05-14 9:40 ` [RFC][PATCH 5/14] Introduce union stack Bharata B Rao
2007-05-14 20:23 ` Badari Pulavarty
2007-05-14 20:51 ` Jan Engelhardt
2007-05-19 10:18 ` Paul Dickson
2007-05-22 16:35 ` Jan Engelhardt
2007-05-23 13:25 ` Serge E. Hallyn
2007-05-14 20:48 ` Jan Engelhardt
2007-05-15 7:19 ` Jan Blunck
2007-05-14 22:40 ` Badari Pulavarty
2007-05-15 6:28 ` Bharata B Rao
2007-05-14 9:41 ` [RFC][PATCH 6/14] Union-mount dentry reference counting Bharata B Rao
2007-05-14 20:57 ` Jan Engelhardt
2007-05-14 9:41 ` [RFC][PATCH 7/14] Union-mount mounting Bharata B Rao
2007-05-15 7:29 ` Jan Engelhardt
2007-05-16 5:04 ` Bharata B Rao
2007-05-14 9:42 ` [RFC][PATCH 8/14] Union-mount lookup Bharata B Rao
2007-05-15 7:57 ` Jan Engelhardt
2007-05-16 5:08 ` Bharata B Rao
2007-05-16 19:28 ` Jan Engelhardt
2007-05-16 20:06 ` Serge E. Hallyn
2007-05-15 14:00 ` Trond Myklebust
2007-05-18 11:05 ` Bharata B Rao
2007-05-14 9:42 ` [RFC][PATCH 9/14] Union-mount readdir Bharata B Rao
2007-05-14 10:43 ` Carsten Otte
2007-05-14 11:15 ` Bharata B Rao
2007-05-14 9:43 ` [RFC][PATCH 10/14] In-kernel file copy between union mounted filesystems Bharata B Rao
2007-05-16 7:57 ` Jan Engelhardt
2007-05-18 11:10 ` Bharata B Rao
2007-05-18 13:47 ` Shaya Potter [this message]
2007-05-22 3:13 ` Bharata B Rao
2007-05-22 6:25 ` Jan Engelhardt
2007-05-22 8:38 ` Bharata B Rao
2007-05-22 12:35 ` Shaya Potter
2007-05-23 10:41 ` Bharata B Rao
2007-05-14 9:43 ` [RFC][PATCH 11/14] VFS whiteout handling Bharata B Rao
2007-05-16 8:06 ` Jan Engelhardt
2007-05-14 9:44 ` [RFC][PATCH 12/14] ext2 whiteout support Bharata B Rao
2007-05-16 8:07 ` Jan Engelhardt
2007-05-14 9:44 ` [RFC][PATCH 13/14] ext3 " Bharata B Rao
2007-05-14 20:16 ` Badari Pulavarty
2007-05-15 6:26 ` Bharata B Rao
2007-05-15 8:31 ` Jan Blunck
2007-05-14 20:17 ` Andreas Dilger
2007-05-14 20:35 ` Jan Blunck
2007-05-15 14:28 ` Theodore Tso
2007-05-14 9:45 ` [RFC][PATCH 14/14] tmpfs " Bharata B Rao
2007-05-14 16:13 ` Hugh Dickins
2007-05-14 19:20 ` Jan Blunck
2007-05-14 19:35 ` Hugh Dickins
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