[Xen-devel] [PATCH] xen/gntalloc: use vma_pages().

[Muhammad Falak R Wani <falakreyaz@xxxxxxxxx>]

Replace explicit computation of vma page count by a call to
vma_pages()

Signed-off-by: Muhammad Falak R Wani <falakreyaz@xxxxxxxxx>
---
 drivers/xen/gntalloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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)) {
-- 
1.9.1


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