1 files changed, 3 insertions, 1 deletions

diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c
index 3417d0172a5d..873ffca2321c 100644
--- a/kernel/locking/rwsem-xadd.c
+++ b/kernel/locking/rwsem-xadd.c
@@ -18,6 +18,8 @@
 
 #include "rwsem.h"
 
+#include <litmus/litmus.h> /* for is_realtime() */
+
 /*
  * Guide to the rw_semaphore's count field for common values.
  * (32-bit case illustrated, similar for 64-bit)
@@ -392,7 +394,7 @@ static bool rwsem_optimistic_spin(struct rw_semaphore *sem)
                  * we're an RT task that will live-lock because we won't let
                  * the owner complete.
                  */
-                if (!owner && (need_resched() || rt_task(current)))
+                if (!owner && (need_resched() || rt_task(current) || is_realtime(current)))
                         break;
 
                 /*