文件系统的IRP的中断等级

The following table summarizes the IRQL and thread context requirements for file system filter driver dispatch routines.
Dispatch Routine Caller's IRQL: Caller's Thread Context:
Cleanup PASSIVE_LEVEL Nonarbitrary
Close APC_LEVEL Arbitrary
Create PASSIVE_LEVEL Nonarbitrary
DeviceControl (except paging I/O) PASSIVE_LEVEL Nonarbitrary
DeviceControl (paging I/O path) APC_LEVEL Arbitrary
DirectoryControl APC_LEVEL Arbitrary
FlushBuffers PASSIVE_LEVEL Nonarbitrary
FsControl (except paging I/O) PASSIVE_LEVEL Nonarbitrary
FsControl (paging I/O path) APC_LEVEL Arbitrary
LockControl PASSIVE_LEVEL Nonarbitrary
PnP PASSIVE_LEVEL Arbitrary
QueryEa PASSIVE_LEVEL Nonarbitrary
QueryInformation PASSIVE_LEVEL Nonarbitrary
QueryQuota PASSIVE_LEVEL Nonarbitrary
QuerySecurity PASSIVE_LEVEL Nonarbitrary
QueryVolumeInfo PASSIVE_LEVEL Nonarbitrary
Read (except paging I/O) PASSIVE_LEVEL Nonarbitrary
Read (paging I/O path) APC_LEVEL Arbitrary
SetEa PASSIVE_LEVEL Nonarbitrary
SetInformation PASSIVE_LEVEL Nonarbitrary
SetQuota PASSIVE_LEVEL Nonarbitrary
SetSecurity PASSIVE_LEVEL Nonarbitrary
SetVolumeInfo PASSIVE_LEVEL Nonarbitrary
Shutdown APC_LEVEL Arbitrary
Write (except paging I/O) PASSIVE_LEVEL Nonarbitrary
Write (paging I/O path) APC_LEVEL Arbitrary