Mark spin variable as volatile.

Force gcc to actually spin.

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/queuelock.h b/include/linux/queuelock.h
index 5ed74899da..236a2805bc 100644
--- a/include/linux/queuelock.h
+++ b/include/linux/queuelock.h
@@ -26,7 +26,7 @@ typedef struct {
            that they are cache local
          */
         union {
-                enum {
+                volatile enum {
                         MUST_WAIT,
                         HAS_LOCK
                 } val;