knfsd: nfsv4 delegation recall should take reference on client

It's not enough to take a reference on the delegation object itself; we
need to ensure that the rpc_client won't go away just as we're about to
make an rpc call.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index c1cb7e009c1e..9d536a8cb379 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -486,6 +486,7 @@ out_put_cred:
         /* Success or failure, now we're either waiting for lease expiration
          * or deleg_return. */
         dprintk("NFSD: nfs4_cb_recall: dp %p dl_flock %p dl_count %d\n",dp, dp->dl_flock, atomic_read(&dp->dl_count));
+        put_nfs4_client(clp);
         nfs4_put_delegation(dp);
         return;
 }