>Yes, usually it still most be copied I don't think this would be true for linux. since linux's page cache is unified across all mounted file systems, and with

>Yes, usually it still most be copied I don't think this would be true for linux. since linux's page cache is unified across all mounted file systems, and with linux's tmpfs using the page cache directly for storing files, it doesn't make much sense that it would need to copy files for use. if you formatted and mounted some other filesystem into the ram, sure. but tmpfs should avoid any such issue.