Well first this is a question for NTDEV since you are below the file system.
Second if you read the code for DiskPerf you will see that it forwards the
rest of the IRP’s to the drivers below it in the stack.
–
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
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“D M” wrote in message news:xxxxx@ntfsd…
The comments in DiskPerfDeviceControl dispatch handler say that it only
handles the performance device control IOCTL codes.
if(currentIrpStack->Parameters.DeviceIoControl.IoControlCode==IOCTL_DISK_PERFORMANCE){
…
…
}
What other IOCTL codes should be handled at this level.
Do all IOCTLs for the disk come down till here?
thanks