When Another User Updates the Data Item

If another user writes changed data to the data item while you hold the cast-out lock, the system ignores the data in the name element. Instead, the information provided on the other user's write request determines the directory update. The system:

Marks the data item as changed.
Updates the user-data field and the parity bits with the information supplied on the WRITE_DATA request.
Assigns the data item to the cast-out class specified on the WRITE_DATA request.

The UNLOCK_CO_NAME request in this instance does not affect the directory entry for the data item and has no effect on the storage class specified for the data item on the WRITE_DATA request. The data item resources are marked as changed and are not available for storage reclaim.