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Date: Wed, 13 Sep 2006 02:11:00 +0100
From: Al Viro <viro@ftp.linux.org.uk>
To: Ram Pai <linuxram@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, nacc@us.ibm.com
Subject: Re: [PATCH 1/1] VFS: fixes a bug in sys_linkat()
Message-ID: <20060913011100.GC29920@ftp.linux.org.uk>
References: <200609130057.k8D0vcqJ028474@ram.us.ibm.com>
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On Tue, Sep 12, 2006 at 05:57:38PM -0700, Ram Pai wrote:
> Hardlink using sys_linkat() returns EXDEV when the source and the destination
> point to the same filesystem, residing under different mounts.

... and that is absolutely deliberate.  Ability to restrict links to
a subtree is a deliberate feature.