linux-kernel - Re: [PATCH 1/2] eCryptfs: convert lookup_one_len() to lookup_one_len

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Message-ID: <20070309163415.GA21427@filer.fsl.cs.sunysb.edu>
Date:	Fri, 9 Mar 2007 11:34:15 -0500
From:	Josef Sipek <jsipek@....cs.sunysb.edu>
To:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org, Michael Halcrow <mhalcrow@...ibm.com>
Subject: Re: [PATCH 1/2] eCryptfs: convert lookup_one_len() to lookup_one_len_nd()

On Fri, Mar 09, 2007 at 09:40:00AM +0000, Christoph Hellwig wrote:
> On Sat, Feb 17, 2007 at 03:56:55AM -0500, Josef 'Jeff' Sipek wrote:
> > From: Michael Halcrow <mhalcrow@...ibm.com>
> > 
> > Call the new lookup_one_len_nd() rather than lookup_one_len().  This fixes an
> > oops when stacked on NFS.
> > 
> > Note that there are still some issues with eCryptfs on NFS having to do with
> > directory deletion (I'm not getting an oops, just an -EBUSY).
> 
> Biug NACK here.  This is just working around the broken lookup intents
> code.  lookup_one_len still is a hack for some network filesystems that
> unfortunately grew a few too many users.
 
I'm working on the 4-th case to do_path_lookup. The only problem left, is
the negative dentries. do_path_lookup returns -ENOENT. Which would means
that we need either a wrapper that returns the negative dentry instead of 
 
> Implementing this might be a good idea anyway to clean up the mess
> do_path_lookup is currently.

Clean up? There are 4 (including the new case) "setup" cases, and then the
actual lookup happens. You'll need the crazy if conditions unless the mening
of the arguments changes.

Josef "Jeff" Sipek.

-- 
UNIX is user-friendly ... it's just selective about who it's friends are
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