Dear Ketan... > do with page tables. So VMA can not be shared even in clone(), rather > it is copied into other process's task_struct. So with clone() you > will have two copies of same VMA values inside both the processes. I > think VMA can never be shared (single instance shared by both > processes). in the case you are calling clone() with non CLONE_VM, the above statement is correct. However, if you use CLONE_VM, the mm_struct between the parent and the child is shared, thus the VMA is also shared. Try to read about it on Linux kernel development and/or directly inside the source code (kernel/fork.c on copy_mm() ). Hope it helps regards Mulyadi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
