[Cluster-devel] Re: [PATCH 1/2] dlm: initialize file_lock struct in GETLK before copying conflicting lock

[Jeff Layton]

On Tue, 27 Jan 2009 17:34:01 -0500
"J. Bruce Fields" <bfields at fieldses.org> wrote:

> On Thu, Jan 22, 2009 at 02:16:03PM -0500, Jeff Layton wrote:
> > dlm_posix_get fills out the relevant fields in the file_lock before
> > returning when there is a lock conflict, but doesn't clean out any of
> > the other fields in the file_lock.
> > 
> > When nfsd does a NFSv4 lockt call, it sets the fl_lmops to
> > nfsd_posix_mng_ops before calling the lower fs. When the lock comes back
> > after testing a lock on GFS2, it still has that field set. This confuses
> > nfsd into thinking that the file_lock is a nfsd4 lock.
> > 
> > Fix this by making DLM reinitialize the file_lock before copying the
> > fields from the conflicting lock.
> > 
> > Signed-off-by: Jeff Layton <jlayton at redhat.com>
> 
> I'll leave this one to gfs2 people to apply unless I'm told otherwise.
> 
> --b.
> 

That should be fine. Dave T. has taken this into his tree and is
pushing it to Linus.

Thanks,
-- 
Jeff Layton <jlayton at redhat.com>