Not sure if I understand the problem. You don't want in most cases to flush out file changes or dirty memory to disk, so you an batch those operations or write

Not sure if I understand the problem. You don't want in most cases to flush out file changes or dirty memory to disk, so you an batch those operations or write only final change and not all intermediary ones. You don't want to wait forever since RAM is volatile. This is why databases have setting for checkpoint intervals, you can set the % or time for dirty pages to be written, I thought the default was 30 seconds, doesn't the same idea apply for file buffers?