linux-kernel - Re: [PATCH 07/11] sysfs: Implement sysfs_delete_link and sysfs_rename

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Message-ID: <485F06B8.6090902@gmail.com>
Date:	Mon, 23 Jun 2008 11:13:12 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Benjamin Thery <benjamin.thery@...l.net>
CC:	Greg Kroah-Hartman <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Biederman <ebiederm@...ssion.com>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Serge Hallyn <serue@...ibm.com>, linux-kernel@...r.kernel.org,
	Al Viro <viro@....linux.org.uk>,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [PATCH 07/11] sysfs: Implement sysfs_delete_link and sysfs_rename_link

Benjamin Thery wrote:
> sysfs: Implement sysfs_delete_link and sysfs_rename_link
> 
> When removing a symlink sysfs_remove_link does not provide
> enough information to figure out which tagged directory the symlink
> falls in.  So I need sysfs_delete_link which is passed the target
> of the symlink to delete.
> 
> Further half the time when we are removing a symlink the code is
> actually renaming the symlink but not doing so explicitly because
> we don't have a symlink rename method. So I have added sysfs_rename_link
> as well.
> 
> Both of these functions now have enough information to find a symlink
> in a tagged directory.  The only restriction is that they must be called
> before the target kobject is renamed or deleted.  If they are called
> later I loose track of which tag the target kobject was marked with
> and can no longer find the old symlink to remove it.
> 
> Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
> Signed-off-by: Benjamin Thery <benjamin.thery@...l.net>

Ugly but given the current interface limitations...

Acked-by: Tejun Heo <tj@...nel.org>

-- 
tejun
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