linux-kernel - Re: [PATCH -V14 0/11] Generic name to handle and open by handle syscalls

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Date:	Wed, 7 Jul 2010 21:39:21 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andreas Dilger <andreas.dilger@...cle.com>
Cc:	"J. Bruce Fields" <bfields@...ldses.org>,
	"Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Neil Brown <neilb@...e.de>, hch@...radead.org,
	viro@...iv.linux.org.uk, adilger@....COM, corbet@....net,
	serue@...ibm.com, hooanon05@...oo.co.jp,
	linux-fsdevel@...r.kernel.org, sfrench@...ibm.com,
	philippe.deniel@....FR, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -V14 0/11] Generic name to handle and open by handle
 syscalls

> I think you are assuming too much about the use of the file handle.  What I'm interested in is not a userspace file server, but rather a more efficient way to have 10000's to millions of clients to be able to open the same regular file, without having to do full path traversal for each one.

The unix security model requires the traversal. In that respect it
differs significantly from some other OS's that did have handle based
direct opens and treat directories as a lookup and translation index only.

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