FILE_IO_PRIORITY_HINT_INFORMATION - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTIOAPI_H

typedef struct DECLSPEC_ALIGN(8) _FILE_IO_PRIORITY_HINT_INFORMATION
{
    IO_PRIORITY_HINT PriorityHint;
} FILE_IO_PRIORITY_HINT_INFORMATION, *PFILE_IO_PRIORITY_HINT_INFORMATION;

#endif

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This structure is documented in Windows Driver Kit.