Re: [PATCH] lockd: hold a reference to nlmsvc_serv while stopping thread.

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> On Oct 9, 2023, at 7:35 PM, NeilBrown <neilb@xxxxxxx> wrote:
> We are required to hold a reference to the svc_serv struct while
> stopping the last thread, as doing that could otherwise drop the last
> reference itself and the svc_serv would be freed while still in use.
> 
> lockd doesn't do this.  After startup, the only reference is held by the
> running thread.
> 
> So change locked to hold a reference on nlmsvc_serv while-ever the
> service is active, and only drop it after the last thread has been
> stopped.
> 
> Note: it doesn't really make sense for threads to hold references to the
> svc_serv any more.  The fact threads are included in serv->sv_nrthreads
> is sufficient.  Maybe a future patch could address this.
> 
> Reported-by: Jeff Layton <jlayton@xxxxxxxxxx>
> Fixes: 68cc388c3238 ("SUNRPC: change how svc threads are asked to exit.")
> Signed-off-by: NeilBrown <neilb@xxxxxxx>

Thanks for the fast response!

Should I squash this into 68cc, or apply it before? I would
like to ensure that bisect works nicely over this series of
commits.


--
Chuck Lever






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