hurd: Add __pthread_spin_wait and use it

900778283ac3 ("htl: make pthread_spin_lock really spin") made
pthread_spin_lock really spin and not block, but the current users of
__pthread_spin_lock were assuming that it blocks, i.e. they use it as a
lightweight mutex fitting in just one int.

__pthread_spin_wait provides that support back.

1 files changed, 1 insertions, 1 deletions

diff --git a/sysdeps/htl/pt-barrier-wait.c b/sysdeps/htl/pt-barrier-wait.c
index 146605abd8..46a36f7ca6 100644
--- a/sysdeps/htl/pt-barrier-wait.c
+++ b/sysdeps/htl/pt-barrier-wait.c
@@ -24,7 +24,7 @@
 int
 pthread_barrier_wait (pthread_barrier_t *barrier)
 {
-  __pthread_spin_lock (&barrier->__lock);
+  __pthread_spin_wait (&barrier->__lock);
   if (--barrier->__pending == 0)
     {
       barrier->__pending = barrier->__count;