outb(2): terminology correction

["astian" <astian@memeware.net>]

outb(2) says:

  You must compile with -O or -O2 or similar.  The functions are defined
  as inline macros, and will not be substituted in without optimization
  enabled, causing unresolved references at link time.

"inline macros [...] not substituted in without optimization" doesn't
make any sense.  C pre-processor macros cannot be inline or not inline.
Indeed these are inline *functions* (at least in this system) with
embedded assembly apparently referencing parameters (which, I surmise,
is why the functions need to be inlined by the compiler or the assembly
will not work).

From /usr/include/x86_64-linux-gnu/sys/io.h (glibc 2.43):

  [...]
  #if defined __GNUC__ && __GNUC__ >= 2

  static __inline unsigned char
  inb (unsigned short int __port)
  {
    unsigned char _v;

    __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (__port));
    return _v;
  }

  [...]

  static __inline void
  outb (unsigned char __value, unsigned short int __port)
  {
    __asm__ __volatile__ ("outb %b0,%w1": :"a" (__value), "Nd" (__port));
  }

  [...]

So I would say just s/inline macros/inline functions/g.