uint64_t expected_write_size) {
TestObjectOperationImpl *o = reinterpret_cast<TestObjectOperationImpl*>(impl);
o->ops.push_back(boost::bind(&TestIoCtxImpl::set_alloc_hint, _1, _2,
uint64_t expected_write_size) {
TestObjectOperationImpl *o = reinterpret_cast<TestObjectOperationImpl*>(impl);
o->ops.push_back(boost::bind(&TestIoCtxImpl::set_alloc_hint, _1, _2,