Author: davidxu
Date: Mon Nov 15 07:33:54 2010
New Revision: 215336
URL: http://svn.freebsd.org/changeset/base/215336
Log:
Only unlock process if a thread is found.
Modified:
head/sys/kern/kern_umtx.c
Modified: head/sys/kern/kern_umtx.c
==============================================================================
--- head/sys/kern/kern_umtx.c Mon Nov 15 06:04:25 2010 (r215335)
+++ head/sys/kern/kern_umtx.c Mon Nov 15 07:33:54 2010 (r215336)
@@ -1592,11 +1592,11 @@ umtxq_sleep_pi(struct umtx_q *uq, struct
/* XXX Only look up thread in current process. */
td1 = tdfind(owner, curproc->p_pid);
mtx_lock_spin(&umtx_lock);
- if (td1 != NULL && pi->pi_owner == NULL) {
- uq1 = td1->td_umtxq;
- umtx_pi_setowner(pi, td1);
+ if (td1 != NULL) {
+ if (pi->pi_owner == NULL)
+ umtx_pi_setowner(pi, td1);
+ PROC_UNLOCK(td1->td_proc);
}
- PROC_UNLOCK(td1->td_proc);
}
TAILQ_FOREACH(uq1, &pi->pi_blocked, uq_lockq) {
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