How does Windows handle IRPs in communication between the kernel and device drivers?

[ProfRon]

You ever wonder how Windows gets stuff done between its core and those device drivers? I mean, it's all about these IRPs zipping around like notes passed in class. The kernel whips one up when you want to read a file or print something. It hands that IRP off to the right driver stack. Drivers grab it, chew on the request, and bounce it down the line if needed. Once everyone's had their say, the IRP heads back up with the results. You see, it keeps everything tidy without chaos. I like how it queues them up too, so nothing gets lost in the shuffle. Drivers complete the IRP by filling in details or errors. The kernel then wakes up the app waiting for it. Pretty slick, right? It handles crashes by canceling stragglers. You can picture it as a relay race in the system's guts.

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