MmUnlockPages function (wdm.h)

The MmUnlockPages routine unlocks the physical pages that are described by the specified memory descriptor list (MDL).

Syntax

void MmUnlockPages(
  [in, out] PMDL MemoryDescriptorList
);

Parameters

[in, out] MemoryDescriptorList

A pointer to an MDL.

Return value

None

Remarks

The memory described by the specified MDL must have been locked previously by a call to MmProbeAndLockPages. If the specified MDL is mapped to system address space, MmUnlockPages releases this mapping before it unlocks the pages.

For more information, see Using MDLs.

Requirements

Minimum supported client	Available starting with Windows 2000.
Target Platform	Universal
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	<=DISPATCH_LEVEL
DDI compliance rules	HwStorPortProhibitedDDIs(storport)

See also

MmProbeAndLockPages