[GFS2] check kthread_should_stop when waiting
Use wait_event_interruptible() in the lock_dlm thread instead of an open coded equivalent, and include a kthread_should_stop() check in the wait test so we don't miss a kthread_stop(). Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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@ -273,18 +273,13 @@ static int gdlm_thread(void *data, int blist)
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struct gdlm_ls *ls = (struct gdlm_ls *) data;
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struct gdlm_lock *lp = NULL;
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uint8_t complete, blocking, submit, drop;
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DECLARE_WAITQUEUE(wait, current);
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/* Only thread1 is allowed to do blocking callbacks since gfs
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may wait for a completion callback within a blocking cb. */
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while (!kthread_should_stop()) {
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set_current_state(TASK_INTERRUPTIBLE);
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add_wait_queue(&ls->thread_wait, &wait);
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if (no_work(ls, blist))
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schedule();
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remove_wait_queue(&ls->thread_wait, &wait);
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set_current_state(TASK_RUNNING);
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wait_event_interruptible(ls->thread_wait,
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!no_work(ls, blist) || kthread_should_stop());
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complete = blocking = submit = drop = 0;
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