This used to be a macro wrapper around get_zeroed_page().

It was a dreadful choice of name, because it hid the fact that this
function memsets the page.  Probably, lots of the callers didn't
actually want to do that but this patch does not make such
optimisations.

At least now, people may spot a `get_zeroed_page' in there and realise
that the page doesn't actually need to be initialised.

The patch also changes get_zeroed_page() to go BUG if called with
__GFP_HIGHMEM.  It returns the address of the page's memory and hence
can only be used for direct-mapped pages (wli).

- kdev_t fixes
- bio fixes
- other cleanups and compile fixes

- Doug Ledford: i810 audio driver update
- Evgeniy Polyakov: update various SCSI drivers to new locking
- David Howells: syscall latency improvement, try 2
- Francois Romieu: dscc4 driver update
- Patrick Mochel: driver model fixes
- Andrew Morton: clean up a few details in ext3 inode initialization
- Pete Wyckoff: make x86 machine check print out right address..
- Hans Reiser: reiserfs update
- Richard Gooch: devfs update
- Greg KH: USB updates
- Dave Jones: PNPBIOS
- Nathan Scott: extended attributes
- Corey Minyard: clean up zlib duplication (triplication..)

  - Alan Cox: big driver/mips sync
  - Andries Brouwer, Christoph Hellwig: more gendisk fixups
  - Tobias Ringstrom: tulip driver workaround for DC21143 erratum