Hi, I am new in kernel land. Hopefully you could provide some information or helpful links. It's a rather naive question: What things to keep in mind when accessing user space from kernel space for reading/writing data. I know one, that a process may get blocked and its pages be out of memory. I would like to know more (or in detail about this one too). thanks, -Sam -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/