From ef9f515a4c38c759c56c7d1e760cc243b6d516f4 Mon Sep 17 00:00:00 2001 From: Libin Date: Wed, 3 Jul 2013 15:01:26 -0700 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ncpfs/mmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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; -- 2.20.1