The ExReleaseRundownProtection routine releases run-down protection that the caller previously acquired by calling the ExAcquireRundownProtection routine.
void ExReleaseRundownProtection( PEX_RUNDOWN_REF RunRef );
A pointer to an EX_RUNDOWN_REF structure that was initialized by a previous call to the ExInitializeRundownProtection routine. The run-down protection routines use this structure to track the run-down status of the associated shared object. This structure is opaque to drivers.
A driver that calls ExAcquireRundownProtection to acquire run-time protection for an object access is responsible for calling ExReleaseRundownProtection to release the run-time protection when the access is finished.
As long as the run-down block itself is nonpaged, this function can be called at DISPATCH_LEVEL.
For more information, see Run-Down Protection.
|Minimum supported client||Available starting with Windows XP.|
|Header||wdm.h (include Wdm.h)|
|IRQL||<= DISPATCH_LEVEL (see Remarks)|
|DDI compliance rules||HwStorPortProhibitedDDIs|