linux-kernel - [PATCH 5/7] MIPS: Cocci spatch "vma

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Date:   Thu, 21 Sep 2017 00:29:36 +0200
From:   Thomas Meyer <thomas@...3r.de>
To:     ralf@...ux-mips.org, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 5/7] MIPS: Cocci spatch "vma_pages"

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@...3r.de>
---

diff -u -p a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -179,7 +179,7 @@ static int mips_dma_mmap(struct device *
 	void *cpu_addr, dma_addr_t dma_addr, size_t size,
 	unsigned long attrs)
 {
-	unsigned long user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+	unsigned long user_count = vma_pages(vma);
 	unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
 	unsigned long addr = (unsigned long)cpu_addr;
 	unsigned long off = vma->vm_pgoff;