> Looking at your patch, I see no reason not to add it. If nobody wants to > use it, then fine. But if someone is creating a application/driver pair > and has a compelling reason to use it, then there is a standardized way. read() is surely the standard way > I just wonder if there is a system vulerability created by it. If a > malicious or broken app frees buffers while the driver is still hodling > them. kiobufs handle the locking and refcounting, so providing the driver handles its on pci posting/freeing order correctly all will be fine
