IPortWaveRTStream::FreePagesFromMdl method (portcls.h)
The FreePagesFromMdl method frees a memory descriptor list (MDL).
Syntax
void FreePagesFromMdl(
[in] PMDL MemoryDescriptorList
);
Parameters
[in] MemoryDescriptorList
Pointer to the MDL.
Return value
None
Remarks
The miniport driver must call this method to free an MDL that was previously allocated by calling either IPortWaveRTStream::AllocatePagesForMdl or IPortWaveRTStream::AllocateContiguousPagesForMdl.
FreePagesFromMdl frees both the physical memory pages described in the MDL and the MDL itself. On return, the MDL pointer value in the MemoryDescriptorList parameter is no longer valid.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later Windows operating systems. |
| Target Platform | Universal |
| Header | portcls.h |
| IRQL | Passive level. |