On Fri, 10 Jun 2005, Jim Cromie wrote: > That page is also cow-able, so if that process were to fork/clone, the > page would be shared between child and grand-child. It seems that > parent or child isnt even material to the COW. It is also possible for a COW page to be shared between multiple sibling processes. If you look at something like a forking MTA (sendmail, exim, ...) or a web server like apache, you will see one parent process that forks many child processes. It is quite possible that there are some pages which the child processes never write to and share COW, while the parent process has written to it and already has its own private copy... -- "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." - Brian W. Kernighan -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
