Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

[pandora-kernel.git] / kernel / workqueue.c

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index d7d3fa3..58e5c15 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -282,8 +282,8 @@ static int worker_thread(void *__cwq)
        struct cpu_workqueue_struct *cwq = __cwq;
        DEFINE_WAIT(wait);
 
-       if (!cwq->wq->freezeable)
-               current->flags |= PF_NOFREEZE;
+       if (cwq->wq->freezeable)
+               set_freezable();
 
        set_user_nice(current, -5);
 
@@ -752,18 +752,17 @@ static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
        if (cwq->thread == NULL)
                return;
 
+       flush_cpu_workqueue(cwq);
        /*
-        * If the caller is CPU_DEAD the single flush_cpu_workqueue()
-        * is not enough, a concurrent flush_workqueue() can insert a
-        * barrier after us.
+        * If the caller is CPU_DEAD and cwq->worklist was not empty,
+        * a concurrent flush_workqueue() can insert a barrier after us.
+        * However, in that case run_workqueue() won't return and check
+        * kthread_should_stop() until it flushes all work_struct's.
         * When ->worklist becomes empty it is safe to exit because no
         * more work_structs can be queued on this cwq: flush_workqueue
         * checks list_empty(), and a "normal" queue_work() can't use
         * a dead CPU.
         */
-       while (flush_cpu_workqueue(cwq))
-               ;
-
        kthread_stop(cwq->thread);
        cwq->thread = NULL;
 }