> @@ -1908,7 +1908,7 @@ void wb_workfn(struct work_struct *work)
> long pages_written;
>
> set_worker_desc("flush-%s", dev_name(wb->bdi->dev));
> - current->flags |= PF_SWAPWRITE;
If flags carries PF_LESS_THROTTLE before modified, then you
have to restore it.
> + current->flags |= (PF_SWAPWRITE | PF_BDI_FLUSHER | PF_LESS_THROTTLE);
>
> if (likely(!current_is_workqueue_rescuer() ||
> !test_bit(WB_registered, &wb->state))) {
> @@ -1938,7 +1938,7 @@ void wb_workfn(struct work_struct *work)
> else if (wb_has_dirty_io(wb) && dirty_writeback_interval)
> wb_wakeup_delayed(wb);
>
> - current->flags &= ~PF_SWAPWRITE;
> + current->flags &= ~(PF_SWAPWRITE | PF_BDI_FLUSHER | PF_LESS_THROTTLE);
> }
>
thanks
Hillf
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