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Use msleep_spin() instead of unlock/tsleep/lock. This was

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already commited but with a wrong msleep variant and then
backed out. Note that this changes the semantic a little
as msleep_spin does not let us to specify priority after
wakeup.

Approved by:	wkoszek, cognet
Approved by:	kib (mentor)
This commit is contained in:
Roman Divacky 2008-07-02 20:44:33 +00:00
parent aa93239120
commit bff2d4d5ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=180196
1 changed files with 2 additions and 6 deletions
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8
sys/kern/kern_alq.c
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@ -224,9 +224,7 @@ alq_shutdown(struct alq *alq)
/* Drain IO */
while (alq->aq_flags & (AQ_FLUSHING|AQ_ACTIVE)) {
alq->aq_flags |= AQ_WANTED;
ALQ_UNLOCK(alq);
tsleep(alq, PWAIT, "aldclose", 0);
ALQ_LOCK(alq);
msleep_spin(alq, &alq->aq_mtx, "aldclose", 0);
}
ALQ_UNLOCK(alq);
@ -433,9 +431,7 @@ alq_get(struct alq *alq, int waitok)
(ale = alq->aq_entfree) == NULL &&
(waitok & ALQ_WAITOK)) {
alq->aq_flags |= AQ_WANTED;
ALQ_UNLOCK(alq);
tsleep(alq, PWAIT, "alqget", 0);
ALQ_LOCK(alq);
msleep_spin(alq, &alq->aq_mtx, "alqget", 0);
}
if (ale != NULL) {