lustre/ldlm: set l_lvb_type coherent when layout is returned

In case layout has been packed into server reply when not
requested, lock l_lvb_type must be set accordingly.
Signed-off-by: Bruno Faccini <bruno.faccini@intel.com>
Reviewed-on: http://review.whamcloud.com/8270
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4194Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c

@@ -228,6 +228,7 @@ static void ldlm_handle_cp_callback(struct ptlrpc_request *req,
 
 			lock_res_and_lock(lock);
 			LASSERT(lock->l_lvb_data == NULL);
+			lock->l_lvb_type = LVB_T_LAYOUT;
 			lock->l_lvb_data = lvb_data;
 			lock->l_lvb_len = lvb_len;
 			unlock_res_and_lock(lock);

drivers/staging/lustre/lustre/mdc/mdc_locks.c

@@ -753,6 +753,7 @@ static int mdc_finish_enqueue(struct obd_export *exp,
 		/* install lvb_data */
 		lock_res_and_lock(lock);
 		if (lock->l_lvb_data == NULL) {
+			lock->l_lvb_type = LVB_T_LAYOUT;
 			lock->l_lvb_data = lmm;
 			lock->l_lvb_len = lvb_len;
 			lmm = NULL;