unmap
Declaration
virtual IOReturn unmap(
IOService *client,
IOStorageExtent *extents,
UInt32extentsCount,
UInt32 options = 0);Parameters
- client:
Client requesting the operation.
- extents:
List of extents. See IOStorageExtent. It is legal for the callee to overwrite the contents of this buffer in order to satisfy the request.
- extentsCount:
Number of extents.
Return Value
Returns the status of the operation.
Overview
Delete unused data from the storage object at the specified byte offsets, synchronously.