Hi Andrew,
(sorry for resending, forgot to CC: linux-kernel@)

This fixes more compile warnings, wrt last changes in k[un]map* prototypes.
I did _not_ fold the compile fix you provided later when CONFIG_HIGHMEM=y,
in include/asm-i386/highmem.h.
This patch:
  - adds (char *) casts in pte_* macros in include/asm-i386/pgtable.h
    when CONFIG_HIGHMEM=y
  - casts swp_entry_t object entry to (char *) in mm/shmem.c.

Signed-off-by: Mathieu Segaud <matt@minas-morgul.org>