linux-kernel - [PATCH] set_cpus_allowed_ptr: don't use rq->migration

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Date:	Tue, 30 Mar 2010 18:58:29 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] set_cpus_allowed_ptr: don't use rq->migration_thread after
	unlock

Trivial typo fix. rq->migration_thread can be NULL after task_rq_unlock(),
this is why we have "mt" which should be used instead.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
---

 sched.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 34-rc1/kernel/sched.c~S_C_A_P_USE_MT	2010-03-29 19:46:21.000000000 +0200
+++ 34-rc1/kernel/sched.c	2010-03-30 18:52:05.000000000 +0200
@@ -5365,7 +5365,7 @@ int set_cpus_allowed_ptr(struct task_str
 
 		get_task_struct(mt);
 		task_rq_unlock(rq, &flags);
-		wake_up_process(rq->migration_thread);
+		wake_up_process(mt);
 		put_task_struct(mt);
 		wait_for_completion(&req.done);
 		tlb_migrate_finish(p->mm);

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