minor locking optimizations

[musl] / src / thread / pthread_rwlock_trywrlock.c

diff --git a/src/thread/pthread_rwlock_trywrlock.c b/src/thread/pthread_rwlock_trywrlock.c
index 1bcf7c9..202e256 100644 (file)
--- a/src/thread/pthread_rwlock_trywrlock.c
+++ b/src/thread/pthread_rwlock_trywrlock.c
@@ -3,10 +3,10 @@
 int pthread_rwlock_trywrlock(pthread_rwlock_t *rw)
 {
        if (a_xchg(&rw->_rw_wrlock, 1))
-               return EAGAIN;
+               return EBUSY;
        if (rw->_rw_readers) {
                a_store(&rw->_rw_wrlock, 0);
-               return EAGAIN;
+               return EBUSY;
        }
        rw->_rw_owner = pthread_self()->tid;
        return 0;