]> git.karo-electronics.de Git - karo-tx-linux.git/commitdiff
mm: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
authorLibin <huawei.libin@huawei.com>
Wed, 19 Jun 2013 00:05:51 +0000 (10:05 +1000)
committerStephen Rothwell <sfr@canb.auug.org.au>
Wed, 19 Jun 2013 07:12:55 +0000 (17:12 +1000)
(*->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>
mm/memory.c
mm/mmap.c

index 61a262b08e53efa2f69c1387e488bea6f87bb0f9..5566ac2218abe328168ccd40283950600a679b84 100644 (file)
@@ -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)
index bdf772c651e3e0ae5f1094133d26ac4333b3e43c..7d20ef44848ca944e5cb4bc049e7127e759148d8 100644 (file)
--- 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;
        }