diff options
| author | Libin | 2013-07-03 15:01:26 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2013-07-03 16:07:26 -0700 |
| commit | d6e932177090463e5c709e9e61bbd705a33a1609 (patch) | |
| tree | e833b8907a9c07662c5aaaef097a81575ba27653 | |
| parent | b430e9d1c6d416306d44dbf3aa3148be7af78abc (diff) | |
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.c | 2 | ||||
| -rw-r--r-- | mm/mmap.c | 2 |
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; } |