--- ./kernel/sys.c.orig	Wed Nov 27 14:35:50 2002
+++ ./kernel/sys.c	Thu Dec  5 19:28:51 2002
@@ -240,10 +240,10 @@
 
 	/* normalize: avoid signed division (rounding problems) */
 	error = -ESRCH;
-	if (niceval < -20)
-		niceval = -20;
-	if (niceval > 19)
-		niceval = 19;
+	if (niceval < PRIO_MIN)
+		niceval = PRIO_MIN;
+	if (niceval > PRIO_MAX - 1)
+		niceval = PRIO_MAX - 1;
 
 	read_lock(&tasklist_lock);
 	switch (which) {
@@ -305,7 +305,7 @@
 				who = current->pid;
 			p = find_task_by_pid(who);
 			if (p) {
-				niceval = 20 - task_nice(p);
+				niceval = PRIO_MAX - task_nice(p);
 				if (niceval > retval)
 					retval = niceval;
 			}
@@ -314,7 +314,7 @@
 			if (!who)
 				who = current->pgrp;
 			for_each_task_pid(who, PIDTYPE_PGID, p, l, pid) {
-				niceval = 20 - task_nice(p);
+				niceval = PRIO_MAX - task_nice(p);
 				if (niceval > retval)
 					retval = niceval;
 			}
@@ -330,7 +330,7 @@
 
 			do_each_thread(g, p)
 				if (p->uid == who) {
-					niceval = 20 - task_nice(p);
+					niceval = PRIO_MAX - task_nice(p);
 					if (niceval > retval)
 						retval = niceval;
 				}
--- ./kernel/sched.c.orig	Wed Nov 27 14:36:17 2002
+++ ./kernel/sched.c	Thu Dec  5 19:28:51 2002
@@ -45,7 +45,7 @@
 /*
  * 'User priority' is the nice value converted to something we
  * can work with better when scaling various scheduler parameters,
- * it's a [ 0 ... 39 ] range.
+ * it's in [ 0 ... 39 ] range.
  */
 #define USER_PRIO(p)		((p)-MAX_RT_PRIO)
 #define TASK_USER_PRIO(p)	USER_PRIO((p)->static_prio)
@@ -1284,7 +1284,7 @@
 	prio_array_t *array;
 	runqueue_t *rq;
 
-	if (TASK_NICE(p) == nice || nice < -20 || nice > 19)
+	if (TASK_NICE(p) == nice || nice < PRIO_MIN || nice > PRIO_MAX - 1)
 		return;
 	/*
 	 * We have to be careful, if called from sys_setpriority(),
@@ -1336,17 +1336,18 @@
 	if (increment < 0) {
 		if (!capable(CAP_SYS_NICE))
 			return -EPERM;
-		if (increment < -40)
-			increment = -40;
+
+		if (increment < PRIO_MIN - PRIO_MAX)
+			increment = PRIO_MIN - PRIO_MAX;
 	}
-	if (increment > 40)
-		increment = 40;
+	if (increment > (PRIO_MAX - PRIO_MIN))
+		increment = PRIO_MAX - PRIO_MIN;
 
 	nice = PRIO_TO_NICE(current->static_prio) + increment;
-	if (nice < -20)
-		nice = -20;
-	if (nice > 19)
-		nice = 19;
+	if (nice < PRIO_MIN)
+		nice = PRIO_MIN;
+	if (nice > PRIO_MAX - 1)
+		nice = PRIO_MAX - 1;
 
 	if ((retval = security_task_setnice(current, nice)))
 		return retval;