[patch -mm 1/6] oom: dump_tasks use find_lock_task_mm too fix

[David Rientjes <rientjes@google.com>]

When find_lock_task_mm() returns a thread other than p in dump_tasks(),
its name should be displayed instead.  This is the thread that will be
targeted by the oom killer, not its mm-less parent.

This also allows us to safely dereference task->comm without needing
get_task_comm().

While we're here, remove the cast on task_cpu(task) as Andrew suggested.

Signed-off-by: David Rientjes <rientjes@google.com>
---
 mm/oom_kill.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -376,10 +376,10 @@ static void dump_tasks(const struct mem_cgroup *mem)
 			continue;
 		}
 
-		printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3d     %3d %s\n",
+		printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3u     %3d %s\n",
 		       task->pid, __task_cred(task)->uid, task->tgid,
 		       task->mm->total_vm, get_mm_rss(task->mm),
-		       (int)task_cpu(task), task->signal->oom_adj, p->comm);
+		       task_cpu(task), task->signal->oom_adj, task->comm);
 		task_unlock(task);
 	}
 }

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