This patch rounds up the size of a file used for iomem emulation up to the
nearest page.  This makes mmap work much better on the last page of the
file.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>