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Diffstat (limited to 'drivers/xen/gntalloc.c')
-rw-r--r--drivers/xen/gntalloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c
index 4547a91..7a47c4c 100644
--- a/drivers/xen/gntalloc.c
+++ b/drivers/xen/gntalloc.c
@@ -504,7 +504,7 @@ static int gntalloc_mmap(struct file *filp, struct vm_area_struct *vma)
struct gntalloc_file_private_data *priv = filp->private_data;
struct gntalloc_vma_private_data *vm_priv;
struct gntalloc_gref *gref;
- int count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int count = vma_pages(vma);
int rv, i;
if (!(vma->vm_flags & VM_SHARED)) {
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