Re: [PATCH 1/4] VFS: Add a VFS helper function vfs_remote_path_lookup()

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On Thu, 2 Apr 2009, Al Viro wrote:
>
> *growl*
> 
> Right, we are out of clone() flags, thanks to namespace-of-the-week
> insanity by openvz bunch ;-/

I really think "clone()" is the wrong kind of granularity, and much too 
big a hammer.

You never answered my suggestion about passing in namespace details to the 
open routines in nameidata. I don't think it actually needs the whole 
thing, the only thing (I _think_) it cares about ends up being just the 
root/cwd.

And as we've with openat/fstatat/etc, NFS really isn't the only thing 
wanting to do per-operation versions of those. Of course, openat() and 
friends just want to use a temporary local cwd. NFS wants to do the same 
thing for /. But I think the problems are related, and the solution could 
be related too - just allow per-operation 'fs' namespaces.

And the nameidata really _is_ the logical place for that all. Not the 
clone flags.

			Linus
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