[PATCH 1/1] nfsd41: renew_client() needs to be called with the client_mutex held

[Ricardo Labiaga <Ricardo.Labiaga@netapp.com>]

renew_client() manipulates the client queue for lease renewal.  Need to
obtain the client_mutex before manipulating it.

Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
---
 fs/nfsd/nfs4state.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 4cb5d1d..18258d7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1537,7 +1537,9 @@ replay_cache:
 	 * Hold a session reference until done processing the compound:
 	 * nfsd4_put_session called only if the cstate slot is set.
 	 */
+	nfs4_lock_state();
 	renew_client(session->se_client);
+	nfs4_unlock_state();
 	nfsd4_get_session(session);
 out:
 	spin_unlock(&sessionid_lock);
-- 
1.5.4.3