If you delete a file (and don't have it open), and there's a bunch of dirty data for that file still in page cache, does all that dirty data disappear or does it still get written back? I'm curious for performance reasons because I have an experimental process I'm developing, and it has a habit of leaving large amounts of dirty data in a huge output file. I'd like to be able to unlink the file and skip the writeback process once the file's been unlinked.
