[PATCH] Optimise oom kill of current task

When oom_killer kills current there's no need to call
schedule_timeout_interruptible() since task must die ASAP.
Signed-Off-By: NPavel Emelianov <xemul@sw.ru>
Signed-Off-By: NKirill Korotaev <dev@openvz.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

mm/oom_kill.c

@@ -298,7 +298,8 @@ void out_of_memory(gfp_t gfp_mask, int order)
 
 	/*
 	 * Give "p" a good chance of killing itself before we
-	 * retry to allocate memory.
+	 * retry to allocate memory unless "p" is current
 	 */
-	schedule_timeout_interruptible(1);
+	if (!test_thread_flag(TIF_MEMDIE))
+		schedule_timeout_interruptible(1);
 }