Raj wrote: > Hi, > I have a doubt regarding the working of the VMA. How is a program > executable's text region shared among processes that are running the > same program ? I would like to understand how finally the same pages > are shared between the 2 processes . I'll try to explain, someone please correct me if I am wrong. Each process has a structure that keeps a count of other processes that access it's memory region. Two processes can share the same memory region as long as they don't try to write that region. If a process wants to write a shared region then the kernel will allocate a new copy of that memory region for the process to write to. William -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
