10/17   How do I page align the offset passed into mmap?
        \_ Carefully.
        \_ What are you trying to accomplish?
           \_ On older versions of FreeBSD its says that
              when I mmap a file, I need to pass in a
              page aligned offset. Normally I do the
              following:

    p = (char *)mmap(0,(size_t)filelen,PROT_READ,MAP_PRIVATE,fd,(off_t)0);

              but I always get EINVAL on FreeBSD.
              \_ That line is correct; it works fine for me on FreeBSD.
                 You're getting EINVAL for some other reason -- perhaps
                 filelen is wrong, or fd refers to a socket instead of
                 an ordinary file or device?
                \_ i haven't used mmap in a couple of year. how to you
                   make sure your heap doesn't grow into your mmaped section?
                   do you malloc and mmap over the malloc? -ali
                   \_ I believe that it's the job of the OS to keep that
                      separate.  Just like if you malloc twice with different
                      sizes you expect the OS to not overlap them.