Hi,<br> I have some conceptual questions about device driver :<br><br>1. Write order fidelity should be maintained when submitting requests from device driver to disk below.<br>    However, acknowledging these requests it is okay if we don&#39;t necessarily maintain that order, right?<br>
   <br>2.  Also i want to understand what the device driver does say if in a multiple paged bio, some of the pages get written<br>    and some don&#39;t, we send the error in the bio. But what about the pages it has already written??? It can&#39;t possibly<br>
    do anything about it, right?<br><br><br>Regards,<br>Neha<br>