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59 lines
1 KiB
C++
59 lines
1 KiB
C++
/*++
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Copyright (c) Microsoft Corporation
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Module Name:
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FxIoQueueKm.hpp
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Abstract:
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This module implements km specific functions for FxIoQueue.
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Author:
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Environment:
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Kernel mode only
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Revision History:
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--*/
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#ifndef _FXIOQUEUEKM_HPP_
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#define _FXIOQUEUEKM_HPP_
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__inline
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BOOLEAN
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FxIoQueue::IsPagingIo(
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__in MdIrp Irp
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)
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/*++
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Routine Description:
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Paging IO is treated especially depending on what Forward Progress policy
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was set on the Queue
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--*/
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{
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//
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// NOTE: IRP_INPUT_OPERATION has the same value as IRP_SYNCHRONOUS_PAGING_IO
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// and IRP_MOUNT_COMPLETION the same as IRP_PAGING_IO so how does one know if
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// the IO is a paging IO ?
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//
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// One can assume that if IRP_PAGING_IO is set and the MJ code is not
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// FILE_SYSTEM_CONTROL then it is a paging I/O.
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//
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if (Irp->Flags & IRP_PAGING_IO) {
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if (IoGetCurrentIrpStackLocation(Irp)->MajorFunction
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!= IRP_MJ_FILE_SYSTEM_CONTROL) {
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return TRUE;
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}
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}
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return FALSE;
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}
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#endif // _FXIOQUEUEKM_HPP
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