writeback: bdi_writeback_task() must set task state before calling schedule()
Calling schedule without setting the task state to non-running will
return immediately, so ensure that we set it properly and check our
sleep conditions after doing so.
This is a fixup for commit 69b62d01
.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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parent
7c8a3554c6
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@ -978,8 +978,13 @@ int bdi_writeback_task(struct bdi_writeback *wb)
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if (dirty_writeback_interval) {
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if (dirty_writeback_interval) {
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wait_jiffies = msecs_to_jiffies(dirty_writeback_interval * 10);
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wait_jiffies = msecs_to_jiffies(dirty_writeback_interval * 10);
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schedule_timeout_interruptible(wait_jiffies);
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schedule_timeout_interruptible(wait_jiffies);
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} else
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} else {
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schedule();
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set_current_state(TASK_INTERRUPTIBLE);
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if (list_empty_careful(&wb->bdi->work_list) &&
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!kthread_should_stop())
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schedule();
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__set_current_state(TASK_RUNNING);
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}
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try_to_freeze();
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try_to_freeze();
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}
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}
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