linux-kernel - Re: RFC: permit link(2) to work across --bind mounts ?

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Date:	Thu, 20 Dec 2007 05:08:44 +1030
From:	David Newall <david@...idnewall.com>
To:	Mark Lord <lkml@....ca>
CC:	Al Viro <viro@....linux.org.uk>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: RFC: permit link(2)  to work across --bind mounts ?

Mark Lord wrote:
> David Newall wrote:
>> Mark Lord wrote:
>>> But.. pity there's no mount flag override for smaller systems,
>>> where bind mounts might be more useful with link(2) actually working.
>>
>> I don't see it.  You always can make hard link on the underlying 
>> filesystem.  If you need to make it on the bound mount, that is, if 
>> you can't locate the underlying filesystem to make the hard link, you 
>> can use a symbolic link.
> ..
>
> Where people run into trouble with this, is when they simply go to
> move a huge file (DVD image) from one directory to another,
> where the target happens to be on a different bind point of the
> same underlying filesystem.

Does that prevent you from seeing the underlying filesystem?
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