[PATCH] oom_kill -- don't call for int_sqrt(0)

[PATCH] oom_kill -- don't call for int_sqrt(0)

[Cyrill Gorcunov]

There is no need to call for int_sqrt if argument is 0.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---

Please review.

 mm/oom_kill.c |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

Index: linux-2.6.git/mm/oom_kill.c
===================================================================
--- linux-2.6.git.orig/mm/oom_kill.c
+++ linux-2.6.git/mm/oom_kill.c
@@ -55,7 +55,7 @@ static DEFINE_SPINLOCK(zone_scan_lock);
 
 unsigned long badness(struct task_struct *p, unsigned long uptime)
 {
-	unsigned long points, cpu_time, run_time, s;
+	unsigned long points, cpu_time, run_time;
 	struct mm_struct *mm;
 	struct task_struct *child;
 
@@ -110,12 +110,10 @@ unsigned long badness(struct task_struct
 	else
 		run_time = 0;
 
-	s = int_sqrt(cpu_time);
-	if (s)
-		points /= s;
-	s = int_sqrt(int_sqrt(run_time));
-	if (s)
-		points /= s;
+	if (cpu_time)
+		points /= int_sqrt(cpu_time);
+	if (run_time)
+		points /= int_sqrt(int_sqrt(run_time));
 
 	/*
 	 * Niced processes are most likely less important, so double