On 26 Sep 2003 12:57:01 +0100 "Stephen C. Tweedie" <sct@redhat.com> wrote: > On Fri, 2003-09-26 at 12:20, David S. Miller wrote: > > > Are you sure? Isn't raw I/O allowed on user buffers backed by > > some kind of file based mmap()? > > Yes, it is. So there we go, that's how page can be a page cache page Matthew.