| Re: [PATCH 4/5] NFS: remove RPC PipeFS mount point reference from blocklayout routines [message #44302 is a reply to message #44301] |
Tue, 29 November 2011 17:27   |
bfields
Messages: 107
Registered: September 2007
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Senior Member |
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On Tue, Nov 29, 2011 at 12:19:25PM -0500, Trond Myklebust wrote:
> On Tue, 2011-11-29 at 11:42 -0500, J. Bruce Fields wrote:
> > On Tue, Nov 29, 2011 at 11:40:30AM -0500, Trond Myklebust wrote:
> > > I mean that I'm perfectly entitled to do
> > >
> > > 'modprobe -r blocklayoutdriver'
> > >
> > > and when I do that, then I expect blkmapd to close the rpc pipe and wait
> > > for a new one to be created just like rpc.idmapd and rpc.gssd do when I
> > > remove the nfs and sunrpc modules.
> >
> > The rpc pipefs mount doesn't hold a reference on the sunrpc module?
>
> I stand corrected: the mount does hold a reference to the sunrpc
> module.
> However nothing holds a reference to the blocklayoutdriver module, so
> the main point that the "blocklayout" pipe can disappear from underneath
> the blkmapd stands.
OK, that makes sense.
--b.
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