ExReleaseFastMutexUnsafe function (wdm.h)

The ExReleaseFastMutexUnsafe routine releases ownership of a fast mutex that was acquired by using ExAcquireFastMutexUnsafe.

Syntax

C++

void ExReleaseFastMutexUnsafe(
  PFAST_MUTEX FastMutex
);

FastMutex

[in, out] A pointer to the fast mutex to be released.

None

It is a programming error to call ExReleaseFastMutexUnsafe with a pointer to a fast mutex that was acquired by using ExAcquireFastMutex or ExTryToAcquireFastMutex.

For more information about fast mutexes, see Fast Mutexes and Guarded Mutexes.

Requirement	Value
Minimum supported client	Windows 2000
Header	wdm.h
IRQL	APC_LEVEL
DDI compliance rules	HwStorPortProhibitedDDIs(storport)