Messages in this thread | | | Date | Mon, 8 Nov 2010 11:10:39 -0500 | From | "J. Bruce Fields" <> | Subject | Re: [PATCH 1/2] locks: let the caller free file_lock on ->setlease failure |
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On Sat, Nov 06, 2010 at 03:03:32PM -0400, Christoph Hellwig wrote: > On Wed, Nov 03, 2010 at 09:40:24PM -0400, J. Bruce Fields wrote: > > The irritating thing is that the only lease user I understand is the > > nfsd code, and it doesn't want this lease-merging behavior; the only > > reason that fl_change is there is so it can just turn this case into an > > error every time. > > Yes. > > > And I have no idea what the requirements are of any other users: do > > leases behave like this on purpose, or was it just an arbitrary choice, > > and does anyone depend on it now? > > Adding Willy and Stephen to the Cc list as they wrote the code. > > > In the end maybe it would be better just to leave leases as they are and > > define a new lock type for nfsd. > > > > We'd probably have to do that eventually anyway, and it'd save me trying > > to guess what the lease semantics are supposed to be.... > > I'd rather see both leases and the nfs4 delegations detangled from the > locks.c code.
What are you thinking of?
> It's far too much of a mess already anyway. > > > Subject: [PATCH 1/2] locks: fix leak on merging leases > > > > We must also free the passed-in lease in the case it wasn't used because > > an existing lease was upgrade/downgraded or already existed. > > > > Note the nfsd caller doesn't care because it's fl_change callback > > returns an error in those cases. > > The patch looks good to me. Care to feed it to Linus?
Yep, will do.
--b.
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