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authorLibin <huawei.libin@huawei.com>2013-07-03 15:01:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:07:26 -0700
commitd6e932177090463e5c709e9e61bbd705a33a1609 (patch)
treee833b8907a9c07662c5aaaef097a81575ba27653
parentb430e9d1c6d416306d44dbf3aa3148be7af78abc (diff)
downloadlinux-d6e932177090463e5c709e9e61bbd705a33a1609.tar.bz2
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>
-rw-r--r--mm/memory.c2
-rw-r--r--mm/mmap.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 95d0cce63583..a101bbcacfd7 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2904,7 +2904,7 @@ static inline void unmap_mapping_range_tree(struct rb_root *root,
details->first_index, details->last_index) {
vba = vma->vm_pgoff;
- vea = vba + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) - 1;
+ vea = vba + vma_pages(vma) - 1;
/* Assume for now that PAGE_CACHE_SHIFT == PAGE_SHIFT */
zba = details->first_index;
if (zba < vba)
diff --git a/mm/mmap.c b/mm/mmap.c
index f681e1842fad..8468ffd05bae 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -955,7 +955,7 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
if (is_mergeable_vma(vma, file, vm_flags) &&
is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) {
pgoff_t vm_pglen;
- vm_pglen = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ vm_pglen = vma_pages(vma);
if (vma->vm_pgoff + vm_pglen == vm_pgoff)
return 1;
}