Subject: Re: what is our answer to ZFS?
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Chris Adams <cmadams@hiwaay.net>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20051122161712.GA942598@hiwaay.net>
References: <fa.d8ojg69.1p5ovbb@ifi.uio.no>
	 <20051122161712.GA942598@hiwaay.net>
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Date: Tue, 22 Nov 2005 20:19:39 +0000
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On Maw, 2005-11-22 at 10:17 -0600, Chris Adams wrote:
> That assumption is probably made because that's what POSIX and Single
> Unix Specification define: "The st_ino and st_dev fields taken together
> uniquely identify the file within the system."  Don't blame code that
> follows standards for breaking.

It was a nice try but there is a giant gotcha most people forget. Its
only safe to make this assumption while you have all of the
files/directories in question open.

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