[PATCH 3/7] metag: Cocci spatch "vma_pages"

[Thomas Meyer]

Use vma_pages function on vma object instead of explicit computation.
Found by coccinelle spatch "api/vma_pages.cocci"

Signed-off-by: Thomas Meyer <tho...@m3y3r.de>
---

diff -u -p a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c
--- a/arch/metag/kernel/dma.c
+++ b/arch/metag/kernel/dma.c
@@ -342,7 +342,7 @@ static int metag_dma_mmap(struct device
        else
                vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-       user_size = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+       user_size = vma_pages(vma);
 
        spin_lock_irqsave(&consistent_lock, flags);
        c = metag_vm_region_find(&consistent_head, (unsigned long)cpu_addr);