should_fail_futex
if (unlikely(should_fail_futex(fshared)))
if (unlikely(should_fail_futex(true)))
if (unlikely(should_fail_futex(true)) || ro) {
extern bool should_fail_futex(bool fshared);
if (unlikely(should_fail_futex(true)))
if (unlikely(should_fail_futex(true)))
if ((unlikely(should_fail_futex(true))))
if (unlikely(should_fail_futex(true))) {
if (unlikely(should_fail_futex(true)))
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))