BUF_IO_READ); } mutex_exit(block_mutex); ut_ad(buf_pool->n_pend_reads > 0); buf_pool->n_pend_reads.fetch_sub(1); buf_pool->stat.n_pages_read.fetch_add(1); break; case BUF_IO_WRITE: /* Write means a flush operation: call the completion routine in the flush system */ buf...