sys: Replace hardcoding of -20 and 19 with MIN_NICE and MAX_NICE

Signed-off-by: Dongsheng Yang <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Robin Holt <[email protected]> Cc: Al Viro <[email protected]> Cc: Kees Cook <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Stephen Rothwell <[email protected]> Link: http://lkml.kernel.org/r/0261f094b836f1acbcdf52e7166487c0c77323c8.1392103744.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
zhenyw · Feb 22, 2014 · c4a4d2f · c4a4d2f
1 parent 75e45d5
commit c4a4d2f
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/kernel/sys.c b/kernel/sys.c
@@ -174,10 +174,10 @@ SYSCALL_DEFINE3(setpriority, int, which, int, who, int, niceval)
 
 	/* normalize: avoid signed division (rounding problems) */
 	error = -ESRCH;
-	if (niceval < -20)
-		niceval = -20;
-	if (niceval > 19)
-		niceval = 19;
+	if (niceval < MIN_NICE)
+		niceval = MIN_NICE;
+	if (niceval > MAX_NICE)
+		niceval = MAX_NICE;
 
 	rcu_read_lock();
 	read_lock(&tasklist_lock);