[PATCH] suppress might_sleep() if oopsing

We can call might_sleep() functions on the oops handling path (under do_exit).

There seem little point in emitting spurious might_sleep() warnings into the
logs after the kernel has oopsed.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/sched.c

@@ -4631,7 +4631,7 @@ void __might_sleep(char *file, int line)
 	static unsigned long prev_jiffy;	/* ratelimiting */
 
 	if ((in_atomic() || irqs_disabled()) &&
-	    system_state == SYSTEM_RUNNING) {
+	    system_state == SYSTEM_RUNNING && !oops_in_progress) {
 		if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy)
 			return;
 		prev_jiffy = jiffies;