BUF_ATTR_DEFERRED
buf->attr &= ~BUF_ATTR_DEFERRED;
if (buffer->attr & BUF_ATTR_DEFERRED) {
buffer->attr |= BUF_ATTR_DEFERRED;
if (!(buf->attr & BUF_ATTR_DEFERRED))
if (!(buf->attr & BUF_ATTR_DEFERRED))
if (buf->attr & BUF_ATTR_DEFERRED) {
if (buf->attr & BUF_ATTR_DEFERRED) {
buf->attr |= BUF_ATTR_DEFERRED;
buf->attr |= BUF_ATTR_DEFERRED;