linux-kernel - Re: [patch 4/8] nfsd: rename MAY

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Message-ID: <20080530073607.GB7758@infradead.org>
Date:	Fri, 30 May 2008 03:36:07 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	Miklos Szeredi <miklos@...redi.hu>, hch@...radead.org,
	linux-fsdevel@...r.kernel.org, viro@...IV.linux.org.uk,
	linux-kernel@...r.kernel.org, neilb@...e.de
Subject: Re: [patch 4/8] nfsd: rename MAY_ flags

On Thu, May 29, 2008 at 04:40:02PM -0400, J. Bruce Fields wrote:
> > don't think it does, but I'm interested in the nfsd maintainers'
> > opinions.
> 
> This isn't something I've ever had a reason to care about.  What are you
> trying to fix exactly?

The NFS MAY_ flags operate in the same name and number space and we'd
easily get collisions when someone adds new MAY_ flags which miklos
as well as at least two other independent efforts want to do.  To sort
this out we'd either defined the nfsd MAY_ flags in fs.h to make it
obvious we should not double-allocates bits or names, or use a different
name and number space for the nfsd flags.  The first would be rather
trivial but also ugly, the seconds sound much better but is a little
more effort.  Just defined NFSD_MAY_ and use it everywhere and do a
little translation inside nfsd_permission before passing it on to
permission().

> 
> --b.
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