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SubjectRe: [PATCH 00/12] make rpc_pipefs be mountable multiple times
On Mon, Dec 20, 2010 at 09:46:44AM -0500, J. Bruce Fields wrote:
> On Mon, Dec 20, 2010 at 01:54:26PM +0200, Kirill A. Shutsemov wrote:
> > From: Kirill A. Shutemov <kirill@shutemov.name>
> >
> > Prepare nfs/sunrpc stack to use multiple instances of rpc_pipefs.
> > Only for client for now.
> >
> > Only quick sanity check was made. BTW, is there any check list for NFS
> > contributors?
>
> Nothing formal.
>
> Chuck may have some nlm patches that conflict; I'm not sure what their
> status is.
>
> For testing rpc_pipefs, maybe a few mounts (simultaneous mounts might be
> good), possibly over different security flavors, and with some of them
> nfsv4, might be a good idea.

Ok, I'll play with it.

> By the way, was there ever a resolution to Trond's question?:
>
> http://marc.info/?l=linux-nfs&m=128655758712817&w=2
>
> "The keyring upcalls are currently initiated through the same
> mechanism as module_request and therefore get started with the
> init_nsproxy namespace. We'd really like them to run inside the
> same container as the process. As part of the same problem,
> there is the issue of what to do with the dns resolver and
> Bryan's new keyring based idmapper code."

I'm not sure that I understand the problem correctly.

Currently, idmap uses dentry taken from client's cl_rpcclient->cl_path
(see nfs_idmap_new()). cl_rpcclient (and cl_path) is initialized with
rpcmount resolved against mount namespace of mount process (see
nfs_create_rpc_client()).
I assume it's correct.

--
Kirill A. Shutemov


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