1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/char/vmur.h b/drivers/s390/char/vmur.h
index 2b3c564e0472..fa959644735a 100644
--- a/drivers/s390/char/vmur.h
+++ b/drivers/s390/char/vmur.h
@@ -70,6 +70,7 @@ struct urdev {
         size_t reclen;                  /* Record length for *write* CCWs */
         int class;                      /* VM device class */
         int io_request_rc;              /* return code from I/O request */
+        atomic_t ref_count;             /* reference counter */
 };
 
 /*