[PATCH 2/7] arm64: Cocci spatch "vma_pages"

From: Thomas Meyer
Date: Wed Sep 20 2017 - 18:41:15 EST


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

Signed-off-by: Thomas Meyer <thomas@xxxxxxxx>
---

diff -u -p a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -303,8 +303,7 @@ static int __swiotlb_mmap_pfn(struct vm_
unsigned long pfn, size_t size)
{
int ret = -ENXIO;
- unsigned long nr_vma_pages = (vma->vm_end - vma->vm_start) >>
- PAGE_SHIFT;
+ unsigned long nr_vma_pages = vma_pages(vma);
unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
unsigned long off = vma->vm_pgoff;