[PATCH] reintroduce task_nice export for binfmt_elf32

S/390 needs this for its binfmt_elf32 module.
Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/sched.c

@@ -3191,6 +3191,15 @@ int task_nice(const task_t *p)
 	return TASK_NICE(p);
 }
 
+/*
+ * The only users of task_nice are binfmt_elf and binfmt_elf32.
+ * binfmt_elf is no longer modular, but binfmt_elf32 still is.
+ * Therefore, task_nice is needed if there is a compat_mode.
+ */
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL_GPL(task_nice);
+#endif
+
 /**
  * idle_cpu - is a given cpu idle currently?
  * @cpu: the processor in question.