Message ID | 20201023062003.3353-1-qiang.zhang@windriver.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | io-wq: fix 'task->pi_lock' spin lock protect | expand |
On 10/23/20 12:20 AM, qiang.zhang@windriver.com wrote: > From: Zqiang <qiang.zhang@windriver.com> > > The set CPU affinity func 'do_set_cpus_allowed' may be operate > 'task_rq', need add rq lock protect, replace 'pi_lock' spinlock > protect with task_rq_lock func. Thanks, I'm going to fold this one.
diff --git a/fs/io-wq.c b/fs/io-wq.c index d3165ce339c2..6ea3e0224e63 100644 --- a/fs/io-wq.c +++ b/fs/io-wq.c @@ -1209,11 +1209,13 @@ static bool io_wq_worker_affinity(struct io_worker *worker, void *data) { struct task_struct *task = worker->task; unsigned long flags; + struct rq_flags rf; + struct rq *rq; - raw_spin_lock_irqsave(&task->pi_lock, flags); + rq = task_rq_lock(task, &rf); do_set_cpus_allowed(task, cpumask_of_node(worker->wqe->node)); task->flags |= PF_NO_SETAFFINITY; - raw_spin_unlock_irqrestore(&task->pi_lock, flags); + task_rq_unlock(rq, task, &rf); return false; }