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 On return, the MDL pointer value in the MemoryDescriptorList parameter is no longer valid.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. |