oom_kill: don't call for int_sqrt(0)
There is no need to call for int_sqrt if argument is 0.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <cl@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 40ba050..d3b9bac 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -55,7 +55,7 @@
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 @@
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