[PATCH 2/5] oom: remove warning for in mm-less task __oom_kill_process()

[KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>]

If the race of mm detach in task exiting vs oom is happen,
find_lock_task_mm() can be return NULL.

So, the warning is pointless. remove it.


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
---
 mm/oom_kill.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index bac4515..70e1a85 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -402,12 +402,8 @@ static int __oom_kill_process(struct task_struct *p, struct mem_cgroup *mem,
 		return 1;
 
 	p = find_lock_task_mm(p);
-	if (!p) {
-		WARN_ON(1);
-		printk(KERN_WARNING "tried to kill an mm-less task %d (%s)!\n",
-			task_pid_nr(p), p->comm);
+	if (!p)
 		return 1;
-	}
 
 	if (verbose)
 		printk(KERN_ERR "Killed process %d (%s) "
-- 
1.6.5.2