If the worker task is not idle, it may sleep on some conditions by the request of the work. Our unfriendly wakeup in the insert_kthread_work() may confuse the worker.
Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com> --- kernel/kthread.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/kthread.c b/kernel/kthread.c index c2390f4..ef48322 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -591,7 +591,7 @@ static void insert_kthread_work(struct kthread_worker *worker, list_add_tail(&work->node, pos); work->worker = worker; - if (likely(worker->task)) + if (!worker->current_work && likely(worker->task)) wake_up_process(worker->task); } -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/