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Fix taskq_wait_outstanding re-evaluate tq_next_id

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wait_event is a macro, so the current implementation will cause re-
evaluation of tq_next_id every time it wakes up. This would cause
taskq_wait_outstanding(tq, 0) to be equivalent to taskq_wait(tq)

Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Issue #553
This commit is contained in:
Chunwei Chen 2016-05-23 14:12:22 -07:00 committed by Brian Behlendorf
parent 5ce028b0d4
commit b3a22a0a00
1 changed files with 2 additions and 2 deletions
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4
module/spl/spl-taskq.c
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@ -447,8 +447,8 @@ taskq_wait_outstanding_check(taskq_t *tq, taskqid_t id)
void
taskq_wait_outstanding(taskq_t *tq, taskqid_t id)
{
wait_event(tq->tq_wait_waitq,
taskq_wait_outstanding_check(tq, id ? id : tq->tq_next_id - 1));
id = id ? id : tq->tq_next_id - 1;
wait_event(tq->tq_wait_waitq, taskq_wait_outstanding_check(tq, id));
}
EXPORT_SYMBOL(taskq_wait_outstanding);