Patchwork [3/6] ncpfs: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

login
register
mail settings
Submitter Libin
Date April 15, 2013, 12:48 p.m.
Message ID <1366030138-71292-3-git-send-email-huawei.libin@huawei.com>
Download mbox | patch
Permalink /patch/236594/
State Not Applicable
Headers show

Comments

Libin - April 15, 2013, 12:48 p.m.
(*->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>
---
 fs/ncpfs/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c
index ee24df5..3c5dd55 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;