On Fri, Jun 30, 2017 at 12:46:57AM +0100, Al Viro wrote: > Hmm... It's not quite non-blocking, though - copy_page_to_iter() can > bloody well block, as any copying to userland. I'm not saying that > it's a significant problem (if you are reading into something that > had been mmaped from NFS server, etc., you are getting what you'd > asked for), but it's worth documenting. True. I'll ensure this is documented in the man page.
