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

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(*->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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Libin 2013-07-03 15:01:26 -07:00 committed by Linus Torvalds
parent d6e9321770
commit ef9f515a4c
1 changed files with 1 additions and 1 deletions
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2
fs/ncpfs/mmap.c
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@ -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;