work->func() may sleep, it's a bug to call run_workqueue() with irqs disabled.
Signed-off-by: Oleg Nesterov <[EMAIL PROTECTED]>
--- 6.20-rc6-mm3/kernel/workqueue.c~2_run_irq 2007-02-06 22:54:16.000000000
+0300
+++ 6.20-rc6-mm3/kernel/workqueue.c 2007-02-06 23:09:34.000000000 +0300
@@ -227,13 +227,7 @@ EXPORT_SYMBOL_GPL(queue_delayed_work_on)
static void run_workqueue(struct cpu_workqueue_struct *cwq)
{
- unsigned long flags;
-
- /*
- * Keep taking off work from the queue until
- * done.
- */
- spin_lock_irqsave(&cwq->lock, flags);
+ spin_lock_irq(&cwq->lock);
cwq->run_depth++;
if (cwq->run_depth > 3) {
/* morton gets to eat his hat */
@@ -248,7 +242,7 @@ static void run_workqueue(struct cpu_wor
cwq->current_work = work;
list_del_init(cwq->worklist.next);
- spin_unlock_irqrestore(&cwq->lock, flags);
+ spin_unlock_irq(&cwq->lock);
BUG_ON(get_wq_data(work) != cwq);
if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
@@ -266,11 +260,11 @@ static void run_workqueue(struct cpu_wor
dump_stack();
}
- spin_lock_irqsave(&cwq->lock, flags);
+ spin_lock_irq(&cwq->lock);
cwq->current_work = NULL;
}
cwq->run_depth--;
- spin_unlock_irqrestore(&cwq->lock, flags);
+ spin_unlock_irq(&cwq->lock);
}
/*
-
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