From: Con Kolivas <kernel@kolivas.org>

A heck of a lot fairer on disk only tasks; lets them earn sleep avg up to just 
interactive state so they stay on the active array.



 kernel/sched.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff -puN kernel/sched.c~o13.1int kernel/sched.c
--- 25/kernel/sched.c~o13.1int	2003-08-23 13:57:31.000000000 -0700
+++ 25-akpm/kernel/sched.c	2003-08-23 13:57:31.000000000 -0700
@@ -583,13 +583,16 @@ repeat_lock_task:
 				goto repeat_lock_task;
 			}
 			if (old_state == TASK_UNINTERRUPTIBLE){
+				rq->nr_uninterruptible--;
 				/*
 				 * Tasks on involuntary sleep don't earn
-				 * sleep_avg
+				 * sleep_avg beyond just interactive state.
 				 */
-				rq->nr_uninterruptible--;
-				p->timestamp = sched_clock();
-				p->activated = -1;
+				if (NS_TO_JIFFIES(p->sleep_avg) >=
+					JUST_INTERACTIVE_SLEEP(p)){
+						p->timestamp = sched_clock();
+						p->activated = -1;
+				}
 			}
 			if (sync)
 				__activate_task(p, rq);

_