From: Libin <huawei.libin@huawei.com>
Date: Thu, 23 May 2013 00:37:10 +0000 (+1000)
Subject: ncpfs: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
X-Git-Tag: next-20130527~1^2~218
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b7163dba505d94653afb42d50099f652987030c7;p=karo-tx-linux.git

ncpfs: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.

Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index ee24df5af1f9..3c5dd55d284c 100644
--- a/fs/ncpfs/mmap.c
+++ b/fs/ncpfs/mmap.c
@@ -117,7 +117,7 @@ int ncp_mmap(struct file *file, struct vm_area_struct *vma)
 		return -EINVAL;
 	/* we do not support files bigger than 4GB... We eventually 
 	   supports just 4GB... */
-	if (((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff 
+	if (vma_pages(vma) + vma->vm_pgoff
 	   > (1U << (32 - PAGE_SHIFT)))
 		return -EFBIG;