tree e833b8907a9c07662c5aaaef097a81575ba27653
parent b430e9d1c6d416306d44dbf3aa3148be7af78abc
author Libin <huawei.libin@huawei.com> 1372888886 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1372892846 -0700

mm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.

Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>