SMP race in set_current_state

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This patch fixes a SMP race in 2.2.18pre9:

--- IO-wait/include/linux/sched.h.~1~ Sun Sep 17 01:20:44 2000
+++ IO-wait/include/linux/sched.h Sun Sep 17 03:55:43 2000
@@ -499,7 +499,7 @@
 
 #define __set_current_state(state_value) do { current->state = state_value; } while (0)
 #ifdef __SMP__
-#define set_current_state(state_value) do { mb(); __set_current_state(state_value); } while (0)
+#define set_current_state(state_value) do { __set_current_state(state_value); mb(); } while (0)
 #else
 #define set_current_state(state_value) __set_current_state(state_value)
 #endif

Andrea
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