FltGetIoPriorityHintFromCallbackData function (fltkernel.h)

The FltGetIoPriorityHintFromCallbackData routine is used by a minifilter driver to get IO priority information from callback data.

Syntax

IO_PRIORITY_HINT FLTAPI FltGetIoPriorityHintFromCallbackData(
  [in] PFLT_CALLBACK_DATA Data
);

[in] Data

A pointer to a FLT_CALLBACK_DATA structure that represents an I/O operation. This parameter is required and cannot be NULL.

The FltGetIoPriorityHintFromCallbackData routine returns an IO priority hint retrieved from the DataFLT_CALLBACK_DATA structure.

If the FLT_CALLBACK_DATA structure does not have an IO priority, the routine returns IoPriorityNormal.

If an error occurs retrieving the hint, the routine returns IoPriorityNormal.

This routine is NONPAGED and can be called from paging IO paths.

Requirement	Value
Minimum supported client	Available in Windows Vista and later Windows operating systems.
Target Platform	Universal
Header	fltkernel.h (include FltKernel.h)
Library	FltMgr.lib
DLL	Fltmgr.sys
IRQL	<= DISPATCH_LEVEL