linux-kernel - Re: [PATCH] VFS: new fgetattr() file operation

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Date:	Fri, 26 Oct 2007 01:10:14 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	dgc@....com
CC:	staubach@...hat.com, akpm@...ux-foundation.org, hch@...radead.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] VFS: new fgetattr() file operation

> On Wed, Oct 24, 2007 at 05:27:04PM +0200, Miklos Szeredi wrote:
> > > >> Wouldn't you be better off by attempting to implement an "open
> > > >> by ino" operation and an operation to get the generation count
> > > >> for the file and then modifying the network protocol of interest
> > > >> to use these as identifiers for the file to be manipulated?
> > > >>     
> > > >
> > > > You mean an "open by inode" on the userspace API?  My guess, it
> > > > wouldn't get very far.
> > > 
> > > This isn't a new idea and has been implemented on a variety of
> > > different systems.
> > 
> > Like?
> 
> XFS.
> 
> 'man open_by_handle'

Doesn't seem widely used, with 600 something google hits.  And in this
old thread Linus is not entirely enthusiastic about the concept:

  http://lkml.org/lkml/1999/1/11/244

Miklos
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