Author: mjg
Date: Fri Jul 24 17:28:24 2020
New Revision: 363480
URL: https://svnweb.freebsd.org/changeset/base/363480
Log:
lockmgr: add missing 'continue' to account for spuriously failed fcmpset
PR: 248245
Reported by: gbe
Noted by: markj
Fixes by: r363415 ("lockmgr: add adaptive spinning")
Modified:
head/sys/kern/kern_lock.c
Modified: head/sys/kern/kern_lock.c
==============================================================================
--- head/sys/kern/kern_lock.c Fri Jul 24 17:11:14 2020 (r363479)
+++ head/sys/kern/kern_lock.c Fri Jul 24 17:28:24 2020 (r363480)
@@ -836,6 +836,7 @@ lockmgr_xlock_hard(struct lock *lk, u_int flags, struc
if (x == LK_UNLOCKED) {
if (atomic_fcmpset_acq_ptr(&lk->lk_lock, &x, tid))
break;
+ continue;
}
if ((flags & (LK_ADAPTIVE | LK_INTERLOCK)) == LK_ADAPTIVE) {
if (lockmgr_xlock_adaptive(&lda, lk, &x))
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
