NtAllocateReserveObject - NtDoc

#ifndef _NTPSAPI_H
// Reserve objects
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WIN7)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtAllocateReserveObject(
    _Out_ PHANDLE MemoryReserveHandle,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _In_ MEMORY_RESERVE_TYPE Type
    );

#endif
#endif
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwAllocateReserveObject(
    _Out_ PHANDLE MemoryReserveHandle,
    _In_ POBJECT_ATTRIBUTES ObjectAttributes,
    _In_ MEMORY_RESERVE_TYPE Type
    );

#endif
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