MFC_BUF_FLAG_USED
mfc_buf->flags &= ~MFC_BUF_FLAG_USED;
mfc_buf->flags &= ~MFC_BUF_FLAG_USED;
if (buf->flags & MFC_BUF_FLAG_USED)
if (mb_entry->flags & MFC_BUF_FLAG_USED) {
if (buf->flags & MFC_BUF_FLAG_USED)
mfc_buf->flags &= ~MFC_BUF_FLAG_USED;
mfc_buf->flags &= ~MFC_BUF_FLAG_USED;
temp_vb->flags |= MFC_BUF_FLAG_USED;
src_mb->flags |= MFC_BUF_FLAG_USED;
dst_mb->flags |= MFC_BUF_FLAG_USED;
temp_vb->flags |= MFC_BUF_FLAG_USED;
src_mb->flags |= MFC_BUF_FLAG_USED;
dst_mb->flags |= MFC_BUF_FLAG_USED;