On Fri, 25 Mar 2005, Rahul Iyer wrote: > I agree... pid is not a good idea. So i thought of something else... the > swp_entry_t. What i forgot was that this is only for anonymous pages... disk > buffers and mmapped pages are not put on swap (right?). So, I'm looking at > something else now... primarily the page->private field. You cannot use such an identifier, since the page will be GONE after it is swapped out, meaning the identifier (which is your lookup key) will be gone too! > I guess, what i need is an identifier to tag every page that leaves the > cache... whether anonymous, mmapped or disk buffer. Unfortunately I > cannot find such an id. Actually, this is all that holds me up... the > rest of what i need to do is in place - mentally that is. :) So, I could > really use a tip ;) OK, here's a tip: how do the page cache code and the page fault code decide which page to bring into memory ? -- "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/
